CN115261728B - Corrosion-resistant steel pipe material for high-pressure boiler and preparation method thereof - Google Patents
Corrosion-resistant steel pipe material for high-pressure boiler and preparation method thereof Download PDFInfo
- Publication number
- CN115261728B CN115261728B CN202210943293.1A CN202210943293A CN115261728B CN 115261728 B CN115261728 B CN 115261728B CN 202210943293 A CN202210943293 A CN 202210943293A CN 115261728 B CN115261728 B CN 115261728B
- Authority
- CN
- China
- Prior art keywords
- parts
- nano
- corrosion
- steel pipe
- resistant steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
- B05D7/146—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies to metallic pipes or tubes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/28—Normalising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
- C21D8/105—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/085—Cooling or quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/14—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes wear-resistant or pressure-resistant pipes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/30—Ferrous alloys, e.g. steel alloys containing chromium with cobalt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
本发明提供了一种高压锅炉用耐腐蚀钢管材料及其制备方法，包括合金基材以及涂覆于其表面的功能涂层；所述合金基材的化学成分百分比为：C 0.03‑0.08％、Si 0.3‑0.6％、Cr 10‑17％、Mn 0.3‑1％、Co 0.1‑0.4％、Ta 0.01‑0.05％、Ga 0.001‑0.003％、Ba 0.001‑0.005％、Zr 0.01‑0.03％、Sn 0.03‑0.06％、Te 0.001‑0.003％、Cu 0.1‑0.2％、N 0.002‑0.006％、稀土元素0.001‑0.003％、纳米添加剂0.001‑0.003％，余量为Fe和其他不可避免的杂质；所述功能涂层是由如下按重量份计的各组分制成：硅酸铝纤维2‑4份、膨胀蛭石3‑6份、莫来石粉15‑25份、纳米硅化锆3‑5份、纳米氮化钼1‑3份、刚玉10‑20份、粘结剂5‑8份、水5‑10份。本发明公开的高压锅炉用耐腐蚀钢管材料耐腐蚀性能佳，机械力学性能、耐蒸汽氧化性和耐高温耐用性好，使用寿命长。The invention provides a corrosion-resistant steel pipe material for a high-pressure boiler and a preparation method thereof, comprising an alloy base material and a functional coating coated on its surface; the chemical composition percentage of the alloy base material is: C 0.03-0.08%, Si 0.3‑0.6%, Cr 10‑17%, Mn 0.3‑1%, Co 0.1‑0.4%, Ta 0.01‑0.05%, Ga 0.001‑0.003%, Ba 0.001‑0.005%, Zr 0.01‑0.03%, Sn 0.03 ‑0.06%, Te 0.001‑0.003%, Cu 0.1‑0.2%, N 0.002‑0.006%, rare earth elements 0.001‑0.003%, nano additives 0.001‑0.003%, the balance is Fe and other unavoidable impurities; the function The coating is made of the following components by weight: 2-4 parts of aluminum silicate fiber, 3-6 parts of expanded vermiculite, 15-25 parts of mullite powder, 3-5 parts of nano zirconium silicide, nano Molybdenum nitride 1-3 parts, corundum 10-20 parts, binder 5-8 parts, water 5-10 parts. The corrosion-resistant steel pipe material for the high-pressure boiler disclosed by the invention has good corrosion resistance, good mechanical properties, steam oxidation resistance, high temperature resistance and durability, and long service life.
Description
技术领域technical field
本发明涉及冶金材料技术领域，尤其涉及一种高压锅炉用耐腐蚀钢管材料及其制备方法。The invention relates to the technical field of metallurgical materials, in particular to a corrosion-resistant steel pipe material for a high-pressure boiler and a preparation method thereof.
背景技术Background technique
高压锅炉是一种能量转换设备，它通过煤、油、天然气等燃料放出化学能，通过传热过程将能量传递给水或其他导热介质，以高压蒸汽或导热介质形式直接供给工业生产中所需的各种形式的能源。钢管是高压锅炉的重要部件之一，其性能直接影响高压锅炉的运行安全性和经济性。可见，开发综合性能和性能稳定性优异的高压锅炉用钢管材料势在必行。A high-pressure boiler is an energy conversion device that releases chemical energy through coal, oil, natural gas and other fuels, transfers energy to water or other heat-conducting media through the heat transfer process, and directly supplies the energy required in industrial production in the form of high-pressure steam or heat-conducting media. Various forms of energy. Steel pipe is one of the important parts of high-pressure boiler, and its performance directly affects the operation safety and economy of high-pressure boiler. It can be seen that it is imperative to develop high-pressure boiler steel pipe materials with excellent comprehensive performance and performance stability.
目前，常见的高压锅炉用钢管材料晶粒度级数较低，在高温环境中的耐腐蚀性和耐蒸汽氧化性差，同时抗高温蠕变应力有限，导致其在高温高压下工作易产生蠕变，并有可能发生持久断裂，造成高压锅炉失效，引发生产安全事故，造成较大的经济损失。At present, the common steel pipe materials for high-pressure boilers have low grain size series, poor corrosion resistance and steam oxidation resistance in high-temperature environments, and have limited resistance to high-temperature creep stress, which makes them prone to creep when working under high-temperature and high-pressure conditions. , and may cause permanent fracture, resulting in failure of the high-pressure boiler, causing production safety accidents, and causing large economic losses.
为了解决上述问题，专利CN103741075B公开了一种高压锅炉用耐腐蚀钢管材料及其制备方法，其化学成分的质量百分比为：C 0.015-0.035、Si 0.4-0.6、Cr 8.0-12.0、Ni3.6-5.2、Mn 0.5-1.5、Sn 0.3-0.6、Sb 0.2-0.4、Mo 0.15-0.25、W 0.1-0.2、V 0.05-0.15、N0.003-0.006、P≤0.02、S≤0.01，余量为Fe。该发明制得的钢管材料在高温环境下具有优异的耐腐蚀性、耐蒸汽氧化性、抗应力蠕变性，且高温强度高，冲击韧性好，经久耐用，完全满足高压锅炉用钢管材料的性能要求。该发明生产工艺简单易操作，成本低，经济效益好，适合大规模工业化生产。然而，其高温高压下的耐受性、抗腐蚀性仍有待进一步提高，机械力学性能和性能稳定性仍有待进一步改善。In order to solve the above problems, patent CN103741075B discloses a corrosion-resistant steel pipe material for high-pressure boilers and its preparation method. The mass percentage of its chemical composition is: C 0.015-0.035, Si 0.4-0.6, Cr 8.0-12.0, Ni3.6- 5.2, Mn 0.5-1.5, Sn 0.3-0.6, Sb 0.2-0.4, Mo 0.15-0.25, W 0.1-0.2, V 0.05-0.15, N0.003-0.006, P≤0.02, S≤0.01, the balance is Fe . The steel pipe material prepared by the invention has excellent corrosion resistance, steam oxidation resistance and stress creep resistance under high temperature environment, and has high high temperature strength, good impact toughness and durability, fully meeting the performance of steel pipe materials for high-pressure boilers Require. The production process of the invention is simple and easy to operate, with low cost and good economic benefits, and is suitable for large-scale industrial production. However, its tolerance and corrosion resistance under high temperature and pressure still need to be further improved, and its mechanical properties and performance stability still need to be further improved.
可见，本领域仍然需要一种耐腐蚀性能佳，机械力学性能、耐蒸汽氧化性和耐高温耐用性好，使用寿命长的高压锅炉用耐腐蚀钢管材料及其制备方法。It can be seen that there is still a need in this field for a corrosion-resistant steel pipe material for high-pressure boilers with good corrosion resistance, good mechanical properties, steam oxidation resistance, high temperature resistance and durability, and long service life and its preparation method.
发明内容Contents of the invention
鉴于上述问题，本发明的目的在于提供一种耐腐蚀性能佳，机械力学性能、耐蒸汽氧化性和耐高温耐用性好，使用寿命长的高压锅炉用耐腐蚀钢管材料及其制备方法。In view of the above problems, the object of the present invention is to provide a corrosion-resistant steel pipe material for high-pressure boilers with good corrosion resistance, good mechanical properties, steam oxidation resistance, high temperature resistance and durability, and long service life and its preparation method.
为了达到上述目的，本发明所采用的技术方案是：一种高压锅炉用耐腐蚀钢管材料，包括合金基材以及涂覆于其表面的功能涂层；所述合金基材的化学成分百分比为：C0.03-0.08％、Si 0.3-0.6％、Cr 10-17％、Mn 0.3-1％、Co 0.1-0.4％、Ta 0.01-0.05％、Ga0.001-0.003％、Ba 0.001-0.005％、Zr 0.01-0.03％、Sn 0.03-0.06％、Te 0.001-0.003％、Cu 0.1-0.2％、N 0.002-0.006％、稀土元素0.001-0.003％、纳米添加剂0.001-0.003％，余量为Fe和其他不可避免的杂质；所述功能涂层是由如下按重量份计的各组分制成：硅酸铝纤维2-4份、膨胀蛭石3-6份、莫来石粉15-25份、纳米硅化锆3-5份、纳米氮化钼1-3份、刚玉10-20份、粘结剂5-8份、水5-10份。In order to achieve the above purpose, the technical solution adopted in the present invention is: a corrosion-resistant steel pipe material for high-pressure boilers, including an alloy base material and a functional coating coated on its surface; the chemical composition percentage of the alloy base material is: C0.03-0.08%, Si 0.3-0.6%, Cr 10-17%, Mn 0.3-1%, Co 0.1-0.4%, Ta 0.01-0.05%, Ga0.001-0.003%, Ba 0.001-0.005%, Zr 0.01-0.03%, Sn 0.03-0.06%, Te 0.001-0.003%, Cu 0.1-0.2%, N 0.002-0.006%, rare earth elements 0.001-0.003%, nano additives 0.001-0.003%, the balance is Fe and others Unavoidable impurities; the functional coating is made of the following components by weight: 2-4 parts of aluminum silicate fiber, 3-6 parts of expanded vermiculite, 15-25 parts of mullite powder, nano 3-5 parts of zirconium silicide, 1-3 parts of nanomolybdenum nitride, 10-20 parts of corundum, 5-8 parts of binder, and 5-10 parts of water.
优选的，所述粘结剂是由PA-80高温粘结剂、三聚磷酸钠、硅酸钠、2,4,6-三乙烯基环硼氧烷按质量比(3-5):1:(1-2):(0.1-0.3)混合形成的混合物。Preferably, the binder is made of PA-80 high temperature binder, sodium tripolyphosphate, sodium silicate, 2,4,6-trivinyl boroxine in mass ratio (3-5): 1 :(1-2):(0.1-0.3) mixed to form a mixture.
优选的，所述刚玉为棕刚玉，其粒径组成：5～3mm为25～45wt％、3～1mm为15～25wt％、0～1mm为20wt％，320目为余量。Preferably, the corundum is brown corundum, and its particle size composition is: 25-45wt% for 5-3mm, 15-25wt% for 3-1mm, 20wt% for 0-1mm, and 320 mesh as the balance.
优选的，所述纳米硅化锆的粒度为300-500nm，所述纳米氮化钼的粒度为300-500nm。Preferably, the particle size of the nano-zirconium silicide is 300-500 nm, and the particle size of the nano-molybdenum nitride is 300-500 nm.
优选的，所述莫来石粉粒径组成：5～3mm为25～45wt％、3～1mm为15～25wt％、0～1mm为20wt％，320目为余量。Preferably, the particle size composition of the mullite powder is: 25-45wt% for 5-3mm, 15-25wt% for 3-1mm, 20wt% for 0-1mm, and 320 mesh as the balance.
优选的，所述膨胀蛭石的粒径为0.05～1mm；所述硅酸铝纤维的平均直径为3-9μm，长径比为(10-15):1。Preferably, the particle size of the expanded vermiculite is 0.05-1 mm; the average diameter of the aluminum silicate fibers is 3-9 μm, and the aspect ratio is (10-15):1.
优选的，所述纳米添加剂为纳米硼化硅、纳米氧化锆按质量比3:5混合形成的混合物；所述纳米添加剂的粒度为100-300nm。Preferably, the nano-additive is a mixture formed by mixing nano-silicon boride and nano-zirconia in a mass ratio of 3:5; the particle size of the nano-additive is 100-300 nm.
优选的，所述稀土元素为Pr、Dy、La按质量比1:(0.8-1.2):(0.3-0.5)混合形成的混合物。Preferably, the rare earth element is a mixture formed by mixing Pr, Dy, and La in a mass ratio of 1:(0.8-1.2):(0.3-0.5).
本发明的另一个目的，在于提供一种所述高压锅炉用耐腐蚀钢管材料的制备方法，包括如下步骤：Another object of the present invention is to provide a method for preparing the corrosion-resistant steel pipe material for the high-pressure boiler, comprising the following steps:
步骤S1、以废钢、中间合金和纳米硅化锆、纳米氮化钼为原料按照合金基材的化学成分进行配料，采用连铸连轧制备钢管胚；接着经过热处理后制成合金基材；Step S1, using steel scrap, intermediate alloy, nano-zirconium silicide, and nano-molybdenum nitride as raw materials to prepare ingredients according to the chemical composition of the alloy base material, and adopt continuous casting and rolling to prepare steel tube embryos; and then heat-treat to form alloy base materials;
步骤S2、将功能涂层各组分混合均匀后涂抹到合金基材的表面，高温固化后，制成高压锅炉用耐腐蚀钢管材料。Step S2, mixing the components of the functional coating evenly and applying it on the surface of the alloy substrate, and curing at a high temperature to make a corrosion-resistant steel pipe material for a high-pressure boiler.
优选的，步骤S1中所述热处理包括正火处理、回火处理和淬火处理。Preferably, the heat treatment in step S1 includes normalizing treatment, tempering treatment and quenching treatment.
优选的，所述正火处理的温度为750-830℃，保温时间为30-40min。Preferably, the temperature of the normalizing treatment is 750-830° C., and the holding time is 30-40 minutes.
优选的，所述回火温度为480-600℃，保温时间1-2小时。Preferably, the tempering temperature is 480-600°C, and the holding time is 1-2 hours.
优选的，所述淬火处理为分级淬火，加热至900-960℃后保温25-35min，之后油淬，待冷至室温后重新加入到420-500℃，保温30-40min，保温结束后取出空冷。Preferably, the quenching treatment is graded quenching, heated to 900-960°C and then kept for 25-35 minutes, then oil quenched, and then added to 420-500°C after cooling to room temperature, kept for 30-40 minutes, and then taken out and air-cooled .
优选的，步骤S2中所述高温固化具体为：以3-5℃/分钟的升温速率加热至240-280℃，保温1-2小时，再以5-8℃/分钟的升温速率加热至680-720℃，保温3-5小时。Preferably, the high-temperature curing in step S2 is specifically: heating to 240-280°C at a heating rate of 3-5°C/min, keeping the temperature for 1-2 hours, and then heating to 680°C at a heating rate of 5-8°C/min -720°C, keep warm for 3-5 hours.
相比于现有技术，本发明的有益效果为：Compared with the prior art, the beneficial effects of the present invention are:
(1)本发明公开的高压锅炉用耐腐蚀钢管材料的制备方法，对设备依赖性小，工艺简单，操作方便，制备效率和成品合格率高，适于大规模生产。(1) The preparation method of the corrosion-resistant steel pipe material for high-pressure boilers disclosed by the present invention has little dependence on equipment, simple process, convenient operation, high preparation efficiency and high pass rate of finished products, and is suitable for large-scale production.
(2)本发明公开的高压锅炉用耐腐蚀钢管材料，通过合金基材组成成分配方设计，使得各成分能更好地发挥相互作用，从而改善材料的抗高温氧化、耐腐蚀性能，同时也能赋予钢管材料产品优异的机械性能，较长的使用寿命。纳米添加剂的加入，能起到强化作用，同时改善机械力学性能、耐热性和耐磨性。(2) The corrosion-resistant steel pipe material for high-pressure boilers disclosed in the present invention is designed through the formulation of the composition of the alloy base material, so that the various components can better interact with each other, thereby improving the high-temperature oxidation resistance and corrosion resistance of the material, and at the same time can Endow steel pipe material products with excellent mechanical properties and long service life. The addition of nano-additives can play a strengthening role, while improving mechanical properties, heat resistance and wear resistance.
(3)本发明公开的高压锅炉用耐腐蚀钢管材料，包括合金基材以及涂覆于其表面的功能涂层，通过这样的结构设计，能较好地保护合金基材，有效延长钢管材料的使用寿命；通过配方设计，使得表面功能涂层与合金基材的热膨胀匹配特性良好，从而显著提高钢管材料的抗热震性能。(3) The corrosion-resistant steel pipe material for high-pressure boilers disclosed in the present invention includes an alloy base material and a functional coating coated on its surface. Through such a structural design, the alloy base material can be better protected and the life span of the steel pipe material can be effectively extended. Service life; through formula design, the thermal expansion matching characteristics of the surface functional coating and the alloy substrate are good, thereby significantly improving the thermal shock resistance of the steel pipe material.
(4)本发明公开的高压锅炉用耐腐蚀钢管材料，所述功能涂层是由如下按重量份计的各组分制成：硅酸铝纤维2-4份、膨胀蛭石3-6份、莫来石粉15-25份、纳米硅化锆3-5份、纳米氮化钼1-3份、刚玉10-20份、粘结剂5-8份、水5-10份；所述粘结剂是由PA-80高温粘结剂、三聚磷酸钠、硅酸钠、2,4,6-三乙烯基环硼氧烷按质量比(3-5):1:(1-2):(0.1-0.3)混合形成的混合物。通过各组分配合作用，使得涂层致密度和硬度高，与合金基材的结合好，涂层耐腐蚀性优异，耐高温耐摩擦性强。(4) In the corrosion-resistant steel pipe material for high-pressure boilers disclosed by the present invention, the functional coating is made of the following components in parts by weight: 2-4 parts of aluminum silicate fiber, 3-6 parts of expanded vermiculite , 15-25 parts of mullite powder, 3-5 parts of nano-zirconium silicide, 1-3 parts of nano-molybdenum nitride, 10-20 parts of corundum, 5-8 parts of binder, 5-10 parts of water; The agent is made of PA-80 high-temperature binder, sodium tripolyphosphate, sodium silicate, and 2,4,6-trivinylboroxine according to the mass ratio (3-5):1:(1-2): (0.1-0.3) Mix to form a mixture. Through the cooperation of various components, the coating has high density and hardness, and is well combined with the alloy substrate. The coating has excellent corrosion resistance, high temperature resistance and strong friction resistance.
(5)本发明公开的高压锅炉用耐腐蚀钢管材料，通过热处理和高温固化工艺的合理选取，使得钢管材料耐腐蚀性能和机械力学性能更佳，硬度更高，使用寿命更长。(5) The corrosion-resistant steel pipe material for high-pressure boilers disclosed in the present invention, through reasonable selection of heat treatment and high-temperature curing process, makes the steel pipe material better in corrosion resistance and mechanical properties, higher in hardness, and longer in service life.
具体实施方式Detailed ways
为了使本技术领域的人员更好地理解本发明的技术方案，下面结合实施例对本发明产品作进一步详细的说明。In order to enable those skilled in the art to better understand the technical solution of the present invention, the product of the present invention will be further described in detail below in conjunction with examples.
实施例1Example 1
一种高压锅炉用耐腐蚀钢管材料，包括合金基材以及涂覆于其表面的功能涂层；所述合金基材的化学成分百分比为：C 0.03％、Si 0.3％、Cr 10％、Mn 0.3％、Co 0.1％、Ta0.01％、Ga 0.001％、Ba 0.001％、Zr 0.01％、Sn 0.03％、Te 0.001％、Cu 0.1％、N0.002％、稀土元素0.001％、纳米添加剂0.001％，余量为Fe和其他不可避免的杂质；所述功能涂层是由如下按重量份计的各组分制成：硅酸铝纤维2份、膨胀蛭石3份、莫来石粉15份、纳米硅化锆3份、纳米氮化钼1份、刚玉10份、粘结剂5份、水5份。A corrosion-resistant steel pipe material for a high-pressure boiler, comprising an alloy base material and a functional coating coated on its surface; the chemical composition percentage of the alloy base material is: C 0.03%, Si 0.3%, Cr 10%, Mn 0.3 %, Co 0.1%, Ta0.01%, Ga 0.001%, Ba 0.001%, Zr 0.01%, Sn 0.03%, Te 0.001%, Cu 0.1%, N0.002%, rare earth elements 0.001%, nano additives 0.001%, The balance is Fe and other unavoidable impurities; the functional coating is made of the following components in parts by weight: 2 parts of aluminum silicate fiber, 3 parts of expanded vermiculite, 15 parts of mullite powder, nano 3 parts of zirconium silicide, 1 part of nanomolybdenum nitride, 10 parts of corundum, 5 parts of binder, and 5 parts of water.
所述粘结剂是由PA-80高温粘结剂、三聚磷酸钠、硅酸钠、2,4,6-三乙烯基环硼氧烷按质量比3:1:1:0.1混合形成的混合物。The binder is formed by mixing PA-80 high-temperature binder, sodium tripolyphosphate, sodium silicate, and 2,4,6-trivinylboroxine in a mass ratio of 3:1:1:0.1 mixture.
所述刚玉为棕刚玉，其粒径组成：5～3mm为25wt％、3～1mm为15wt％、0～1mm为20wt％，320目为余量；所述纳米硅化锆的粒度为300nm，所述纳米氮化钼的粒度为300nm。The corundum is brown corundum, and its particle size composition: 5-3mm is 25wt%, 3-1mm is 15wt%, 0-1mm is 20wt%, and 320 mesh is the balance; the particle size of the nano-zirconium silicide is 300nm, so The particle size of the nano molybdenum nitride is 300nm.
所述莫来石粉粒径组成：5～3mm为25wt％、3～1mm为15wt％、0～1mm为20wt％，320目为余量；所述膨胀蛭石的粒径为0.05mm；所述硅酸铝纤维的平均直径为3μm，长径比为10:1；所述纳米添加剂为纳米硼化硅、纳米氧化锆按质量比3:5混合形成的混合物；所述纳米添加剂的粒度为100nm；所述稀土元素为Pr、Dy、La按质量比1:0.8:0.3混合形成的混合物。The particle size composition of the mullite powder: 25wt% for 5-3mm, 15wt% for 3-1mm, 20wt% for 0-1mm, and 320 mesh as the balance; the particle size of the expanded vermiculite is 0.05mm; the The average diameter of the aluminum silicate fiber is 3 μm, and the aspect ratio is 10:1; the nano-additive is a mixture formed by mixing nano-silicon boride and nano-zirconia in a mass ratio of 3:5; the particle size of the nano-additive is 100 nm ; The rare earth element is a mixture formed by mixing Pr, Dy, and La in a mass ratio of 1:0.8:0.3.
一种所述高压锅炉用耐腐蚀钢管材料的制备方法，包括如下步骤：A preparation method of the corrosion-resistant steel pipe material for the high-pressure boiler, comprising the steps of:
步骤S1、以废钢、中间合金和纳米硅化锆、纳米氮化钼为原料按照合金基材的化学成分进行配料，采用连铸连轧制备钢管胚；接着经过热处理后制成合金基材；Step S1, using steel scrap, intermediate alloy, nano-zirconium silicide, and nano-molybdenum nitride as raw materials to prepare ingredients according to the chemical composition of the alloy base material, and adopt continuous casting and rolling to prepare steel tube embryos; and then heat-treat to form alloy base materials;
步骤S2、将功能涂层各组分混合均匀后涂抹到合金基材的表面，高温固化后，制成高压锅炉用耐腐蚀钢管材料。Step S2, mixing the components of the functional coating evenly and applying it on the surface of the alloy substrate, and curing at a high temperature to make a corrosion-resistant steel pipe material for a high-pressure boiler.
步骤S1中所述热处理包括正火处理、回火处理和淬火处理；所述正火处理的温度为750℃，保温时间为30min；所述回火温度为480℃，保温时间1小时；所述淬火处理为分级淬火，加热至900℃后保温25min，之后油淬，待冷至室温后重新加入到420℃，保温30min，保温结束后取出空冷。The heat treatment in step S1 includes normalizing treatment, tempering treatment and quenching treatment; the temperature of the normalizing treatment is 750°C, and the holding time is 30min; the tempering temperature is 480°C, and the holding time is 1 hour; the The quenching treatment is graded quenching. Heating to 900°C and keeping it for 25 minutes, then quenching in oil, after cooling to room temperature, add it to 420°C, keep it for 30 minutes, and take it out for air cooling after the heat preservation.
步骤S2中所述高温固化具体为：以3℃/分钟的升温速率加热至240℃，保温1小时，再以5℃/分钟的升温速率加热至680℃，保温3小时。The high-temperature curing in step S2 specifically includes: heating to 240°C at a heating rate of 3°C/min, holding for 1 hour, then heating to 680°C at a heating rate of 5°C/min, and holding for 3 hours.
实施例2Example 2
一种高压锅炉用耐腐蚀钢管材料，包括合金基材以及涂覆于其表面的功能涂层；所述合金基材的化学成分百分比为：C 0.04％、Si 0.4％、Cr 12％、Mn 0.5％、Co 0.2％、Ta0.02％、Ga 0.0015％、Ba 0.002％、Zr 0.015％、Sn 0.04％、Te 0.0015％、Cu 0.12％、N0.003％、稀土元素0.0015％、纳米添加剂0.0015％，余量为Fe和其他不可避免的杂质；所述功能涂层是由如下按重量份计的各组分制成：硅酸铝纤维2.5份、膨胀蛭石4份、莫来石粉17份、纳米硅化锆3.5份、纳米氮化钼1.5份、刚玉13份、粘结剂6份、水6份。A corrosion-resistant steel pipe material for a high-pressure boiler, comprising an alloy base material and a functional coating coated on its surface; the chemical composition percentage of the alloy base material is: C 0.04%, Si 0.4%, Cr 12%, Mn 0.5 %, Co 0.2%, Ta0.02%, Ga 0.0015%, Ba 0.002%, Zr 0.015%, Sn 0.04%, Te 0.0015%, Cu 0.12%, N0.003%, rare earth elements 0.0015%, nano additives 0.0015%, The balance is Fe and other unavoidable impurities; the functional coating is made from the following components in parts by weight: 2.5 parts of aluminum silicate fiber, 4 parts of expanded vermiculite, 17 parts of mullite powder, nano 3.5 parts of zirconium silicide, 1.5 parts of nanomolybdenum nitride, 13 parts of corundum, 6 parts of binder, and 6 parts of water.
所述粘结剂是由PA-80高温粘结剂、三聚磷酸钠、硅酸钠、2,4,6-三乙烯基环硼氧烷按质量比3.5:1:1.3:0.15混合形成的混合物。The binder is formed by mixing PA-80 high-temperature binder, sodium tripolyphosphate, sodium silicate, and 2,4,6-trivinylboroxine in a mass ratio of 3.5:1:1.3:0.15 mixture.
所述刚玉为棕刚玉，其粒径组成：5～3mm为30wt％、3～1mm为19wt％、0～1mm为20wt％，320目为余量；所述纳米硅化锆的粒度为350nm，所述纳米氮化钼的粒度为350nm。The corundum is brown corundum, and its particle size composition: 5-3mm is 30wt%, 3-1mm is 19wt%, 0-1mm is 20wt%, and 320 mesh is the balance; the particle size of the nano-zirconium silicide is 350nm, so The particle size of the nano molybdenum nitride is 350nm.
所述莫来石粉粒径组成：5～3mm为30wt％、3～1mm为17wt％、0～1mm为20wt％，320目为余量；所述膨胀蛭石的粒径为0.25mm；所述硅酸铝纤维的平均直径为5μm，长径比为11:1。The particle size composition of the mullite powder: 30wt% for 5-3mm, 17wt% for 3-1mm, 20wt% for 0-1mm, and 320 mesh as the balance; the particle size of the expanded vermiculite is 0.25mm; the The aluminum silicate fibers have an average diameter of 5 μm and an aspect ratio of 11:1.
所述纳米添加剂为纳米硼化硅、纳米氧化锆按质量比3:5混合形成的混合物；所述纳米添加剂的粒度为150nm；所述稀土元素为Pr、Dy、La按质量比1:0.9:0.35混合形成的混合物。The nano-additive is a mixture formed by mixing nano-silicon boride and nano-zirconia in a mass ratio of 3:5; the particle size of the nano-additive is 150nm; the rare earth element is Pr, Dy, La in a mass ratio of 1:0.9: 0.35 mixed to form a mixture.
一种所述高压锅炉用耐腐蚀钢管材料的制备方法，包括如下步骤：A preparation method of the corrosion-resistant steel pipe material for the high-pressure boiler, comprising the steps of:
步骤S1、以废钢、中间合金和纳米硅化锆、纳米氮化钼为原料按照合金基材的化学成分进行配料，采用连铸连轧制备钢管胚；接着经过热处理后制成合金基材；Step S1, using steel scrap, intermediate alloy, nano-zirconium silicide, and nano-molybdenum nitride as raw materials to prepare ingredients according to the chemical composition of the alloy base material, and adopt continuous casting and rolling to prepare steel tube embryos; and then heat-treat to form alloy base materials;
步骤S2、将功能涂层各组分混合均匀后涂抹到合金基材的表面，高温固化后，制成高压锅炉用耐腐蚀钢管材料。Step S2, mixing the components of the functional coating evenly and applying it on the surface of the alloy substrate, and curing at a high temperature to make a corrosion-resistant steel pipe material for a high-pressure boiler.
步骤S1中所述热处理包括正火处理、回火处理和淬火处理；所述正火处理的温度为780℃，保温时间为33min；所述回火温度为510℃，保温时间1.2小时；所述淬火处理为分级淬火，加热至920℃后保温28min，之后油淬，待冷至室温后重新加入到450℃，保温33min，保温结束后取出空冷。The heat treatment in step S1 includes normalizing treatment, tempering treatment and quenching treatment; the temperature of the normalizing treatment is 780°C, and the holding time is 33min; the tempering temperature is 510°C, and the holding time is 1.2 hours; the The quenching treatment is graded quenching, heating to 920°C and keeping it for 28 minutes, then oil quenching, after cooling to room temperature, add it to 450°C, keep it for 33 minutes, take it out and cool it in air after the heat preservation is over.
步骤S2中所述高温固化具体为：以3.5℃/分钟的升温速率加热至250℃，保温1.2小时，再以6℃/分钟的升温速率加热至690℃，保温3.5小时。The high-temperature curing in step S2 specifically includes: heating to 250°C at a heating rate of 3.5°C/min, holding for 1.2 hours, then heating to 690°C at a heating rate of 6°C/min, and holding for 3.5 hours.
实施例3Example 3
一种高压锅炉用耐腐蚀钢管材料，包括合金基材以及涂覆于其表面的功能涂层；所述合金基材的化学成分百分比为：C 0.06％、Si 0.45％、Cr 14％、Mn 0.7％、Co 0.25％、Ta 0.035％、Ga 0.002％、Ba 0.0035％、Zr 0.02％、Sn 0.045％、Te 0.002％、Cu 0.15％、N0.004％、稀土元素0.002％、纳米添加剂0.002％，余量为Fe和其他不可避免的杂质；所述功能涂层是由如下按重量份计的各组分制成：硅酸铝纤维3份、膨胀蛭石4.5份、莫来石粉20份、纳米硅化锆4份、纳米氮化钼2份、刚玉15份、粘结剂6.5份、水8份。A corrosion-resistant steel pipe material for a high-pressure boiler, comprising an alloy base material and a functional coating coated on its surface; the chemical composition percentage of the alloy base material is: C 0.06%, Si 0.45%, Cr 14%, Mn 0.7 %, Co 0.25%, Ta 0.035%, Ga 0.002%, Ba 0.0035%, Zr 0.02%, Sn 0.045%, Te 0.002%, Cu 0.15%, N0.004%, rare earth elements 0.002%, nano-additives 0.002%, other The amount is Fe and other unavoidable impurities; the functional coating is made from the following components in parts by weight: 3 parts of aluminum silicate fiber, 4.5 parts of expanded vermiculite, 20 parts of mullite powder, nano siliconized 4 parts of zirconium, 2 parts of nanomolybdenum nitride, 15 parts of corundum, 6.5 parts of binder, and 8 parts of water.
所述粘结剂是由PA-80高温粘结剂、三聚磷酸钠、硅酸钠、2,4,6-三乙烯基环硼氧烷按质量比4:1:1.5:0.2混合形成的混合物。The binder is formed by mixing PA-80 high-temperature binder, sodium tripolyphosphate, sodium silicate, and 2,4,6-trivinylboroxine in a mass ratio of 4:1:1.5:0.2 mixture.
所述刚玉为棕刚玉，其粒径组成：5～3mm为35wt％、3～1mm为20wt％、0～1mm为20wt％，320目为余量；所述纳米硅化锆的粒度为400nm，所述纳米氮化钼的粒度为400nm。The corundum is brown corundum, and its particle size composition: 5-3mm is 35wt%, 3-1mm is 20wt%, 0-1mm is 20wt%, and 320 mesh is the balance; the particle size of the nano-zirconium silicide is 400nm, so The particle size of the nano molybdenum nitride is 400nm.
所述莫来石粉粒径组成：5～3mm为35wt％、3～1mm为20wt％、0～1mm为20wt％，320目为余量；所述膨胀蛭石的粒径为0.65mm；所述硅酸铝纤维的平均直径为6μm，长径比为13:1。The particle size composition of the mullite powder: 35wt% for 5-3mm, 20wt% for 3-1mm, 20wt% for 0-1mm, and 320 mesh as the balance; the particle size of the expanded vermiculite is 0.65mm; the The aluminum silicate fibers have an average diameter of 6 μm and an aspect ratio of 13:1.
所述纳米添加剂为纳米硼化硅、纳米氧化锆按质量比3:5混合形成的混合物；所述纳米添加剂的粒度为200nm；所述稀土元素为Pr、Dy、La按质量比1:1:0.4混合形成的混合物。The nano-additive is a mixture formed by mixing nano-silicon boride and nano-zirconia in a mass ratio of 3:5; the particle size of the nano-additive is 200nm; the rare earth element is Pr, Dy, La in a mass ratio of 1:1: 0.4 Mix to form a mixture.
一种所述高压锅炉用耐腐蚀钢管材料的制备方法，包括如下步骤：A preparation method of the corrosion-resistant steel pipe material for the high-pressure boiler, comprising the steps of:
步骤S1、以废钢、中间合金和纳米硅化锆、纳米氮化钼为原料按照合金基材的化学成分进行配料，采用连铸连轧制备钢管胚；接着经过热处理后制成合金基材；Step S1, using steel scrap, intermediate alloy, nano-zirconium silicide, and nano-molybdenum nitride as raw materials to prepare ingredients according to the chemical composition of the alloy base material, and adopt continuous casting and rolling to prepare steel tube embryos; and then heat-treat to form alloy base materials;
步骤S2、将功能涂层各组分混合均匀后涂抹到合金基材的表面，高温固化后，制成高压锅炉用耐腐蚀钢管材料。Step S2, mixing the components of the functional coating evenly and applying it on the surface of the alloy substrate, and curing at a high temperature to make a corrosion-resistant steel pipe material for a high-pressure boiler.
步骤S1中所述热处理包括正火处理、回火处理和淬火处理；所述正火处理的温度为800℃，保温时间为35min；所述回火温度为530℃，保温时间1.5小时；所述淬火处理为分级淬火，加热至930℃后保温30min，之后油淬，待冷至室温后重新加入到470℃，保温35min，保温结束后取出空冷。The heat treatment in step S1 includes normalizing treatment, tempering treatment and quenching treatment; the temperature of the normalizing treatment is 800°C, and the holding time is 35min; the tempering temperature is 530°C, and the holding time is 1.5 hours; The quenching treatment is graded quenching, heating to 930°C and holding for 30 minutes, then oil quenching, after cooling to room temperature, re-adding to 470°C, holding for 35 minutes, taking out and air cooling after the holding is completed.
步骤S2中所述高温固化具体为：以4℃/分钟的升温速率加热至260℃，保温1.5小时，再以6.5℃/分钟的升温速率加热至700℃，保温4小时。The high-temperature curing in step S2 specifically includes: heating to 260°C at a heating rate of 4°C/min, holding for 1.5 hours, then heating to 700°C at a heating rate of 6.5°C/min, and holding for 4 hours.
实施例4Example 4
一种高压锅炉用耐腐蚀钢管材料，包括合金基材以及涂覆于其表面的功能涂层；所述合金基材的化学成分百分比为：C 0.07％、Si 0.55％、Cr 16％、Mn 0.8％、Co 0.35％、Ta 0.04％、Ga 0.0025％、Ba 0.004％、Zr 0.025％、Sn 0.055％、Te 0.0025％、Cu 0.18％、N 0.005％、稀土元素0.0025％、纳米添加剂0.0025％，余量为Fe和其他不可避免的杂质；所述功能涂层是由如下按重量份计的各组分制成：硅酸铝纤维3.5份、膨胀蛭石5.5份、莫来石粉23份、纳米硅化锆4.5份、纳米氮化钼2.5份、刚玉18份、粘结剂7.5份、水9份。A corrosion-resistant steel pipe material for a high-pressure boiler, including an alloy base material and a functional coating coated on its surface; the chemical composition percentage of the alloy base material is: C 0.07%, Si 0.55%, Cr 16%, Mn 0.8 %, Co 0.35%, Ta 0.04%, Ga 0.0025%, Ba 0.004%, Zr 0.025%, Sn 0.055%, Te 0.0025%, Cu 0.18%, N 0.005%, rare earth elements 0.0025%, nano additives 0.0025%, the balance Fe and other unavoidable impurities; the functional coating is made from the following components in parts by weight: 3.5 parts of aluminum silicate fiber, 5.5 parts of expanded vermiculite, 23 parts of mullite powder, zirconium silicide 4.5 parts, 2.5 parts of nanomolybdenum nitride, 18 parts of corundum, 7.5 parts of binder, and 9 parts of water.
所述粘结剂是由PA-80高温粘结剂、三聚磷酸钠、硅酸钠、2,4,6-三乙烯基环硼氧烷按质量比4.5:1:1.8:0.25混合形成的混合物。The binder is formed by mixing PA-80 high-temperature binder, sodium tripolyphosphate, sodium silicate, and 2,4,6-trivinylboroxine in a mass ratio of 4.5:1:1.8:0.25 mixture.
所述刚玉为棕刚玉，其粒径组成：5～3mm为40wt％、3～1mm为23wt％、0～1mm为20wt％，320目为余量；所述纳米硅化锆的粒度为450nm，所述纳米氮化钼的粒度为450nm；所述莫来石粉粒径组成：5～3mm为43wt％、3～1mm为23wt％、0～1mm为20wt％，320目为余量。The corundum is brown corundum, and its particle size composition: 5-3mm is 40wt%, 3-1mm is 23wt%, 0-1mm is 20wt%, and 320 mesh is the balance; the particle size of the nano-zirconium silicide is 450nm, so The particle size of the nano-molybdenum nitride is 450nm; the particle size composition of the mullite powder is: 5-3mm is 43wt%, 3-1mm is 23wt%, 0-1mm is 20wt%, 320 mesh is the balance.
所述膨胀蛭石的粒径为0.85mm；所述硅酸铝纤维的平均直径为8μm，长径比为14:1；所述纳米添加剂为纳米硼化硅、纳米氧化锆按质量比3:5混合形成的混合物；所述纳米添加剂的粒度为280nm；所述稀土元素为Pr、Dy、La按质量比1:1.1:0.45混合形成的混合物。The particle diameter of described expanded vermiculite is 0.85mm; The average diameter of described aluminum silicate fiber is 8 μ m, and length-to-diameter ratio is 14:1; Described nano-additive is nano-silicon boride, nano-zirconia by mass ratio 3: 5. A mixture formed by mixing; the particle size of the nano-additive is 280nm; the rare earth element is a mixture formed by mixing Pr, Dy, and La in a mass ratio of 1:1.1:0.45.
一种所述高压锅炉用耐腐蚀钢管材料的制备方法，包括如下步骤：A preparation method of the corrosion-resistant steel pipe material for the high-pressure boiler, comprising the steps of:
步骤S1、以废钢、中间合金和纳米硅化锆、纳米氮化钼为原料按照合金基材的化学成分进行配料，采用连铸连轧制备钢管胚；接着经过热处理后制成合金基材；Step S1, using steel scrap, intermediate alloy, nano-zirconium silicide, and nano-molybdenum nitride as raw materials to prepare ingredients according to the chemical composition of the alloy base material, and adopt continuous casting and rolling to prepare steel tube embryos; and then heat-treat to form alloy base materials;
步骤S2、将功能涂层各组分混合均匀后涂抹到合金基材的表面，高温固化后，制成高压锅炉用耐腐蚀钢管材料。Step S2, mixing the components of the functional coating evenly and applying it on the surface of the alloy substrate, and curing at a high temperature to make a corrosion-resistant steel pipe material for a high-pressure boiler.
步骤S1中所述热处理包括正火处理、回火处理和淬火处理；所述正火处理的温度为820℃，保温时间为38min；所述回火温度为590℃，保温时间1.8小时；所述淬火处理为分级淬火，加热至950℃后保温33min，之后油淬，待冷至室温后重新加入到490℃，保温38min，保温结束后取出空冷。The heat treatment in step S1 includes normalizing treatment, tempering treatment and quenching treatment; the temperature of the normalizing treatment is 820°C, and the holding time is 38min; the tempering temperature is 590°C, and the holding time is 1.8 hours; the The quenching treatment is graded quenching, heating to 950°C and holding for 33 minutes, then oil quenching, after cooling to room temperature, re-adding to 490°C, holding for 38 minutes, taking out and cooling in air after the heat preservation is completed.
步骤S2中所述高温固化具体为：以4.5℃/分钟的升温速率加热至275℃，保温1.8小时，再以7.5℃/分钟的升温速率加热至710℃，保温4.5小时。The high-temperature curing in step S2 specifically includes: heating to 275°C at a heating rate of 4.5°C/min, holding for 1.8 hours, then heating to 710°C at a heating rate of 7.5°C/min, and holding for 4.5 hours.
实施例5Example 5
一种高压锅炉用耐腐蚀钢管材料，包括合金基材以及涂覆于其表面的功能涂层；所述合金基材的化学成分百分比为：C 0.08％、Si 0.6％、Cr 17％、Mn 1％、Co 0.4％、Ta0.05％、Ga 0.003％、Ba 0.005％、Zr 0.03％、Sn 0.06％、Te 0.003％、Cu 0.2％、N0.006％、稀土元素0.003％、纳米添加剂0.003％，余量为Fe和其他不可避免的杂质；所述功能涂层是由如下按重量份计的各组分制成：硅酸铝纤维4份、膨胀蛭石6份、莫来石粉25份、纳米硅化锆5份、纳米氮化钼3份、刚玉20份、粘结剂8份、水10份。A corrosion-resistant steel pipe material for a high-pressure boiler, comprising an alloy base material and a functional coating coated on its surface; the chemical composition percentage of the alloy base material is: C 0.08%, Si 0.6%, Cr 17%, Mn 1 %, Co 0.4%, Ta0.05%, Ga 0.003%, Ba 0.005%, Zr 0.03%, Sn 0.06%, Te 0.003%, Cu 0.2%, N0.006%, rare earth elements 0.003%, nano additives 0.003%, The balance is Fe and other unavoidable impurities; the functional coating is made of the following components in parts by weight: 4 parts of aluminum silicate fiber, 6 parts of expanded vermiculite, 25 parts of mullite powder, nano 5 parts of zirconium silicide, 3 parts of nanomolybdenum nitride, 20 parts of corundum, 8 parts of binder, and 10 parts of water.
所述粘结剂是由PA-80高温粘结剂、三聚磷酸钠、硅酸钠、2,4,6-三乙烯基环硼氧烷按质量比5:1:2:0.3混合形成的混合物；所述刚玉为棕刚玉，其粒径组成：5～3mm为45wt％、3～1mm为25wt％、0～1mm为20wt％，320目为余量；所述纳米硅化锆的粒度为500nm，所述纳米氮化钼的粒度为500nm。The binder is formed by mixing PA-80 high-temperature binder, sodium tripolyphosphate, sodium silicate, and 2,4,6-trivinylboroxine in a mass ratio of 5:1:2:0.3 Mixture; the corundum is brown corundum, its particle size composition: 5-3mm is 45wt%, 3-1mm is 25wt%, 0-1mm is 20wt%, 320 mesh is the balance; the particle size of the nano-zirconium silicide is 500nm , the particle size of the nano molybdenum nitride is 500nm.
所述莫来石粉粒径组成：5～3mm为45wt％、3～1mm为25wt％、0～1mm为20wt％，320目为余量；所述膨胀蛭石的粒径为1mm；所述硅酸铝纤维的平均直径为9μm，长径比为15:1；所述纳米添加剂为纳米硼化硅、纳米氧化锆按质量比3:5混合形成的混合物；所述纳米添加剂的粒度为300nm；所述稀土元素为Pr、Dy、La按质量比1:1.2:0.5混合形成的混合物。The particle size composition of the mullite powder: 45wt% for 5-3mm, 25wt% for 3-1mm, 20wt% for 0-1mm, and 320 mesh as the balance; the particle size of the expanded vermiculite is 1mm; the silica The average diameter of the acid aluminum fiber is 9 μm, and the aspect ratio is 15:1; the nano-additive is a mixture formed by mixing nano-silicon boride and nano-zirconia in a mass ratio of 3:5; the particle size of the nano-additive is 300nm; The rare earth element is a mixture formed by mixing Pr, Dy, and La in a mass ratio of 1:1.2:0.5.
一种所述高压锅炉用耐腐蚀钢管材料的制备方法，包括如下步骤：A preparation method of the corrosion-resistant steel pipe material for the high-pressure boiler, comprising the steps of:
步骤S1、以废钢、中间合金和纳米硅化锆、纳米氮化钼为原料按照合金基材的化学成分进行配料，采用连铸连轧制备钢管胚；接着经过热处理后制成合金基材；Step S1, using steel scrap, intermediate alloy, nano-zirconium silicide, and nano-molybdenum nitride as raw materials to prepare ingredients according to the chemical composition of the alloy base material, and adopt continuous casting and rolling to prepare steel tube embryos; and then heat-treat to form alloy base materials;
步骤S2、将功能涂层各组分混合均匀后涂抹到合金基材的表面，高温固化后，制成高压锅炉用耐腐蚀钢管材料。Step S2, mixing the components of the functional coating evenly and applying it on the surface of the alloy substrate, and curing at a high temperature to make a corrosion-resistant steel pipe material for a high-pressure boiler.
步骤S1中所述热处理包括正火处理、回火处理和淬火处理；所述正火处理的温度为830℃，保温时间为40min；所述回火温度为600℃，保温时间2小时；所述淬火处理为分级淬火，加热至960℃后保温35min，之后油淬，待冷至室温后重新加入到500℃，保温40min，保温结束后取出空冷。The heat treatment in step S1 includes normalizing treatment, tempering treatment and quenching treatment; the temperature of the normalizing treatment is 830°C, and the holding time is 40min; the tempering temperature is 600°C, and the holding time is 2 hours; the The quenching treatment is graded quenching, heating to 960°C and holding for 35 minutes, then oil quenching, after cooling to room temperature, re-adding to 500°C, holding for 40 minutes, taking out and air cooling after the holding.
步骤S2中所述高温固化具体为：以5℃/分钟的升温速率加热至280℃，保温2小时，再以8℃/分钟的升温速率加热至720℃，保温5小时。The high-temperature curing in step S2 specifically includes: heating to 280°C at a heating rate of 5°C/min, holding for 2 hours, then heating to 720°C at a heating rate of 8°C/min, and holding for 5 hours.
对比例1Comparative example 1
一种高压锅炉用耐腐蚀钢管材料，其与实施例1基本相同，不同的是，没有添加Ta、Te、纳米硼化硅、三聚磷酸钠和纳米硅化锆。A corrosion-resistant steel pipe material for a high-pressure boiler, which is basically the same as in Example 1, except that Ta, Te, nano-silicon boride, sodium tripolyphosphate and nano-zirconium silicide are not added.
对比例2Comparative example 2
一种高压锅炉用耐腐蚀钢管材料，其与实施例1基本相同，不同的是，没有添加Sn、Ba、纳米氮化钼、2,4,6-三乙烯基环硼氧烷和纳米氧化锆。A corrosion-resistant steel pipe material for a high-pressure boiler, which is basically the same as in Example 1, except that Sn, Ba, nano-molybdenum nitride, 2,4,6-trivinylboroxine and nano-zirconia are not added .
为了进一步说明本发明各实施例产品取得的预期不到的积极技术效果，对各例制成的高压锅炉用耐腐蚀钢管材料进行相关性能测试，测试结果见表1，测试方法如下：In order to further illustrate the unexpected positive technical effect obtained by the products of each embodiment of the present invention, the corrosion-resistant steel pipe materials for high-pressure boilers made by each example are tested for relevant performance. The test results are shown in Table 1. The test method is as follows:
(1)盐雾耐腐蚀性：试验温度为35℃，用5％质量浓度的氯化钠水溶液在试验箱内喷雾，用以模拟环境的加速腐蚀，高压锅炉用耐腐蚀钢管材料的耐受时间(即保持未生锈的时间)长短决定其盐雾耐腐蚀性能的好坏。(1) Salt spray corrosion resistance: the test temperature is 35°C, and 5% mass concentration of sodium chloride aqueous solution is sprayed in the test chamber to simulate the accelerated corrosion of the environment, and the resistance time of corrosion-resistant steel pipe materials for high-pressure boilers (that is, the time to keep rust-free) determines the quality of its salt spray corrosion resistance.
(2)抗高温氯腐蚀性能：在高温气相腐蚀试验台上进行。腐蚀试验温度为550℃，腐蚀气氛模拟实际锅炉内气氛(O2 6.67Vol.％、N2 75.00Vol.％、CO2 13.33Vol.％、H2O4.95Vol.％、HCl 0.05Vol.％)，试验共进行168小时。高温氯腐蚀速率表征采用增重法，采用高温氯腐蚀增重速率来表征样品的腐蚀情况，定义为：高温氯腐蚀增重速率＝(腐蚀后质量-腐蚀前质量)/(样品暴露面积×腐蚀时间)。(2) High-temperature chlorine corrosion resistance: it is carried out on a high-temperature gas-phase corrosion test bench. The corrosion test temperature is 550°C, and the corrosion atmosphere simulates the actual boiler atmosphere (O 2 6.67Vol.%, N 2 75.00Vol.%, CO 2 13.33Vol.%, H 2 O4.95Vol.%, HCl 0.05Vol.%) , the test was carried out for 168 hours. The high temperature chlorine corrosion rate is characterized by the weight gain method, and the high temperature chlorine corrosion weight gain rate is used to characterize the corrosion of the sample, which is defined as: the high temperature chlorine corrosion weight gain rate = (mass after corrosion - mass before corrosion) / (exposed area of sample × corrosion time).
(3)抗拉强度的测定：根据国家标准GB/T 228-2002进行测试。(3) Determination of tensile strength: test according to national standard GB/T 228-2002.
表1Table 1
从表1可以看出，本发明实施例公开的高压锅炉用耐腐蚀钢管材料，与对比例产品相比，具有更优异的机械力学性和耐腐蚀性。It can be seen from Table 1 that the corrosion-resistant steel pipe materials for high-pressure boilers disclosed in the embodiments of the present invention have better mechanical mechanics and corrosion resistance than the comparative products.
以上所述，仅为本发明的较佳实施例而已，并非对本发明作任何形式上的限制；凡本行业的普通技术人员均可按以上所述而顺畅地实施本发明；但是，凡熟悉本专业的技术人员在不脱离本发明技术方案范围内，可利用以上所揭示的技术内容而作出的些许更动、修饰与演变的等同变化，均为本发明的等效实施例；同时，凡依据本发明的实质技术对以上实施例所作的任何等同变化的更动、修饰与演变等，均仍属于本发明的技术方案的保护范围之内。The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any form; all those skilled in the art can implement the present invention smoothly according to the above description; however, anyone who is familiar with the present invention Without departing from the scope of the technical solution of the present invention, professional technicians can use the technical content disclosed above to make some changes, modifications and equivalent changes of evolution, which are all equivalent embodiments of the present invention; Any equivalent changes, modifications and evolutions made by the substantive technology of the present invention to the above embodiments still fall within the scope of protection of the technical solutions of the present invention.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210943293.1A CN115261728B (en) | 2022-08-08 | 2022-08-08 | Corrosion-resistant steel pipe material for high-pressure boiler and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210943293.1A CN115261728B (en) | 2022-08-08 | 2022-08-08 | Corrosion-resistant steel pipe material for high-pressure boiler and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115261728A CN115261728A (en) | 2022-11-01 |
| CN115261728B true CN115261728B (en) | 2023-04-11 |
Family
ID=83749833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210943293.1A Active CN115261728B (en) | 2022-08-08 | 2022-08-08 | Corrosion-resistant steel pipe material for high-pressure boiler and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115261728B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101050507A (en) * | 2006-04-04 | 2007-10-10 | 株式会社神户制钢所 | Steel for ships with excellent corrosion resistance |
| JP2011524467A (en) * | 2008-06-12 | 2011-09-01 | エクソンモービル リサーチ アンド エンジニアリング カンパニー | High performance coatings and surfaces to reduce corrosion and contamination in furnace tubes |
| JP2012188734A (en) * | 2011-02-25 | 2012-10-04 | Jfe Steel Corp | Corrosion resistant steel material rigged for boat and ship |
| CN108607997A (en) * | 2018-05-14 | 2018-10-02 | 洪新阳 | A kind of processing technology of gear |
| CN109135363A (en) * | 2018-09-26 | 2019-01-04 | 运城市森阳新材料有限公司 | A kind of boiler of power plant soot pipeline high-temperature abrasion-proof corrosion-proof erosion coating and preparation method thereof |
| CN109265181A (en) * | 2017-07-18 | 2019-01-25 | 北京泽马新技术有限公司 | Boiler water wall high-temperature anticorrosion dirt-resistant Anti-slagging ceramic coating |
| CN109652736A (en) * | 2018-12-27 | 2019-04-19 | 钢铁研究总院 | A kind of oil tanker is with exempting from the anti-corrosion fashioned iron of coating |
| CN112662948A (en) * | 2020-12-09 | 2021-04-16 | 本钢板材股份有限公司 | RE-Cr-Cu composite corrosion-resistant steel and preparation method thereof |
-
2022
- 2022-08-08 CN CN202210943293.1A patent/CN115261728B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101050507A (en) * | 2006-04-04 | 2007-10-10 | 株式会社神户制钢所 | Steel for ships with excellent corrosion resistance |
| JP2011524467A (en) * | 2008-06-12 | 2011-09-01 | エクソンモービル リサーチ アンド エンジニアリング カンパニー | High performance coatings and surfaces to reduce corrosion and contamination in furnace tubes |
| JP2012188734A (en) * | 2011-02-25 | 2012-10-04 | Jfe Steel Corp | Corrosion resistant steel material rigged for boat and ship |
| CN109265181A (en) * | 2017-07-18 | 2019-01-25 | 北京泽马新技术有限公司 | Boiler water wall high-temperature anticorrosion dirt-resistant Anti-slagging ceramic coating |
| CN108607997A (en) * | 2018-05-14 | 2018-10-02 | 洪新阳 | A kind of processing technology of gear |
| CN109135363A (en) * | 2018-09-26 | 2019-01-04 | 运城市森阳新材料有限公司 | A kind of boiler of power plant soot pipeline high-temperature abrasion-proof corrosion-proof erosion coating and preparation method thereof |
| CN109652736A (en) * | 2018-12-27 | 2019-04-19 | 钢铁研究总院 | A kind of oil tanker is with exempting from the anti-corrosion fashioned iron of coating |
| CN112662948A (en) * | 2020-12-09 | 2021-04-16 | 本钢板材股份有限公司 | RE-Cr-Cu composite corrosion-resistant steel and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115261728A (en) | 2022-11-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102433466A (en) | Nickel and cobalt-based high-temperature alloy containing rare earth elements and preparation method thereof | |
| CN115261728B (en) | Corrosion-resistant steel pipe material for high-pressure boiler and preparation method thereof | |
| CN109402342A (en) | A kind of electrothermal alloy and preparation method thereof | |
| CN114540748A (en) | Rare earth reinforced high-temperature aluminizing slurry and preparation method of coating thereof | |
| CN102268603A (en) | High-Al ferritic heat-resistant steel | |
| CN102181787B (en) | Refractory corrosion-resisting steel as well as preparation and heat treatment method thereof | |
| JPS63137135A (en) | Heat-treated alloy | |
| CN104233161A (en) | Ni60A-ZrO2 nano-coating and preparation method thereof | |
| CN101705426B (en) | Drill collar steel and dehydrogenated heat treatment process thereof for improving ultrasonic flaw detection qualification rate | |
| CN107880740A (en) | Anti-flammability glass flake plasticine and preparation method thereof | |
| CN117265336A (en) | Creep-resistant and oxidation-resistant nickel-based superalloy, and preparation method and application thereof | |
| WO2025025444A1 (en) | Heat-resistant crmoniv cast steel material and preparation method therefor | |
| TW381121B (en) | Austenitic stainless steel for use when hot | |
| CN104405456B (en) | A kind of manufacturing process of the flue for combustion turbine exhaustion system | |
| CN108439799B (en) | Porcelain glaze, enamel coating for copper products and preparation method thereof | |
| CN101343717B (en) | A martensitic heat-resistant steel | |
| CN113684417A (en) | Economical 690 MPa-level low-alloy corrosion-resistant refractory steel | |
| CN113265590A (en) | High-strength antirust alloy spring steel wire and forming process thereof | |
| CN118389899B (en) | High-temperature-resistant titanium alloy and preparation method thereof | |
| CN107805762A (en) | A kind of Hi-Stren steel with resistance to marine microorganism corrosive nature | |
| US3861907A (en) | Wear resistant low-alloy valve steel | |
| CN110724856A (en) | Corrosion-resistant composite metal material and preparation method thereof | |
| CN119843182B (en) | Nano tungsten carbide-containing reinforced high-pressure flange composite material and preparation method thereof | |
| CN111394655A (en) | High-strength corrosion-resistant marine crane steel member and preparation process thereof | |
| CN114990385B (en) | High-temperature alloy for gas turbine casing and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A corrosion-resistant steel pipe material for high-pressure boilers and its preparation method Granted publication date: 20230411 Pledgee: Jiangsu Yizheng Rural Commercial Bank Co.,Ltd. Chenji Sub branch Pledgor: JIANGSU HUAYUE SPECIAL EQUIPMENT Co.,Ltd. Registration number: Y2025980039551 |