JP2003170262A - Method for manufacturing die cast machine member - Google Patents
Method for manufacturing die cast machine memberInfo
- Publication number
- JP2003170262A JP2003170262A JP2001374520A JP2001374520A JP2003170262A JP 2003170262 A JP2003170262 A JP 2003170262A JP 2001374520 A JP2001374520 A JP 2001374520A JP 2001374520 A JP2001374520 A JP 2001374520A JP 2003170262 A JP2003170262 A JP 2003170262A
- Authority
- JP
- Japan
- Prior art keywords
- titanium
- base material
- chromium
- die casting
- surface layer
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 18
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 239000010410 layer Substances 0.000 claims abstract description 21
- 239000002344 surface layer Substances 0.000 claims abstract description 20
- 239000010936 titanium Substances 0.000 claims abstract description 18
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 17
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 15
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims abstract description 15
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000011651 chromium Substances 0.000 claims abstract description 9
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 9
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910003470 tongbaite Inorganic materials 0.000 claims abstract description 7
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 31
- 238000004512 die casting Methods 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 8
- 238000009792 diffusion process Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 11
- 239000002184 metal Substances 0.000 abstract description 11
- 230000007547 defect Effects 0.000 abstract description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052782 aluminium Inorganic materials 0.000 abstract description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052749 magnesium Inorganic materials 0.000 abstract description 2
- 239000011777 magnesium Substances 0.000 abstract description 2
- 239000002345 surface coating layer Substances 0.000 abstract description 2
- 239000011159 matrix material Substances 0.000 abstract 3
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 239000007789 gas Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910001315 Tool steel Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000011195 cermet Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 238000005121 nitriding Methods 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 150000003608 titanium Chemical class 0.000 description 1
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、アルミニウムまた
はマグネシウム用のダイカストマシンにおいて、溶融金
属と接触する部分で使用される部材の製造方法に係る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a member used in a portion which comes into contact with molten metal in a die casting machine for aluminum or magnesium.
【０００２】[0002]
【従来の技術】従来より、ダイカストマシンの金型に
は、ＳＫＤ６１（ＪＩＳ）などの合金工具鋼が広く使用
されてきた。ＳＫＤ６１からなる母材の表面に窒化処理
を施すことによって、溶湯に対する耐溶損性が改善され
るので、金型の寿命を延ばすことができる。2. Description of the Related Art Conventionally, alloy tool steel such as SKD61 (JIS) has been widely used for a die of a die casting machine. By subjecting the surface of the base material made of SKD61 to the nitriding treatment, the erosion resistance to the molten metal is improved, so that the life of the die can be extended.
【０００３】しかし、近年、携帯電話用などの小型部品
の需要拡大により溶湯の量が少なくなる傾向にあり、そ
れに伴い、溶湯温度の低下速度が増大し、湯流れの低下
や凝固チル片の発生などの問題が生じている。その対策
として、溶湯温度を高くしたり、射出速度を速くしたり
しているが、そのような場合には、溶湯による金型の溶
損が早期に生じ易くなり、更なる耐溶損性の向上が求め
られている。However, in recent years, the amount of molten metal has tended to decrease due to the expansion of demand for small parts for mobile phones and the like, and accompanying this, the rate of decrease in molten metal temperature has increased, and the flow of molten metal has decreased and solidified chill pieces have occurred. There are problems such as. As a countermeasure to this, the temperature of the molten metal is increased or the injection speed is increased, but in such a case, melting damage of the mold due to the molten metal is likely to occur at an early stage, further improving the melting resistance. Is required.
【０００４】そこで、セラミックス、サーメット、ＣＶ
Ｄ（またはＰＶＤ）によるチタンやクロムの炭化物また
は窒化物で被覆された金型が開発されている。これら
は、いずれも高い耐溶損性を有しており、実際の使用に
おいてもほとんど溶損が生じないという実績が報告され
ている。Therefore, ceramics, cermet, CV
D (or PVD) titanium or chromium carbide or nitride coated molds have been developed. All of them have high melting resistance, and it has been reported that there is almost no melting loss even in actual use.
【０００５】しかし、セラミックスやサーメットは、一
般的に脆性材料であり、ダイカストマシンの金型に与え
られるような大きな熱衝撃には耐えられず、表面にクラ
ックが入り易い。そのようなクラックが製品に転写され
ることによって、溶損が無くても金型が早期に使用不能
になる場合が多い。[0005] However, ceramics and cermet are generally brittle materials, cannot withstand a large thermal shock given to a die of a die casting machine, and easily crack on the surface. The transfer of such cracks to the product often renders the mold unusable early, even without melting damage.
【０００６】また、ＣＶＤ（またはＰＶＤ）によるチタ
ンやクロムの炭化物膜または窒化物膜は、母材との間の
不連続性が大きいために剥離し易く、また、ピンホール
などの欠陥が生じ易いという問題がある。その上、両者
とも、ＳＫＤ６１の母材に窒化処理を施したものと比較
して、製造コストが大幅に増大することも、一般に普及
しない原因となっている。Further, a carbide or nitride film of titanium or chromium by CVD (or PVD) has a large discontinuity with the base material and is therefore easily peeled off, and defects such as pinholes are likely to occur. There is a problem. In addition, both of them cause a large increase in manufacturing cost as compared with the SKD61 obtained by subjecting the base material of the SKD61 to the nitriding treatment, which is another reason why it is not widely used.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、以上の様な
従来のダイカストマシン用の金型などの問題点に鑑み成
されたもので、本発明の目的は、耐溶損性に優れるとと
もに、表面被覆層に欠陥が生じ難いダイカストマシン用
部材を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the problems of the conventional molds for die casting machines as described above, and an object of the present invention is to provide excellent melting resistance and It is intended to provide a member for a die casting machine in which a surface coating layer is less likely to have defects.
【０００８】[0008]
【課題を解決するための手段】本発明の、ダイカストマ
シン用部材の製造方法は、鋼または鋳鉄製の母材の表層
部に高温雰囲気中でチタンを拡散させ、このチタンと母
材中の炭素とを反応させることにより、表層部に炭化チ
タンが析出した硬化層を形成することを特徴とする。A method for manufacturing a member for a die casting machine according to the present invention comprises diffusing titanium in a surface layer portion of a base material made of steel or cast iron in a high temperature atmosphere, and this titanium and carbon in the base material. It is characterized by forming a hardened layer in which titanium carbide is deposited on the surface layer portion by reacting with.
【０００９】本発明の製造方法によれば、炭素は母材中
に均一に分散しているので、炭化チタンの析出時に炭化
チタンの偏析、炭化チタン含有層の厚さムラなどが生じ
ることがない。従って、母材の表層部に、炭化チタンが
析出した硬化層が均一に形成される。According to the manufacturing method of the present invention, since carbon is uniformly dispersed in the base material, segregation of titanium carbide and uneven thickness of the titanium carbide-containing layer do not occur during the precipitation of titanium carbide. . Therefore, a hardened layer in which titanium carbide is deposited is uniformly formed on the surface layer of the base material.
【００１０】上記の方法によれば、硬化層内の炭素は母
材の内部から供給されるので、硬化層と母材との境界が
不連続にならず、硬化層中で組成が傾斜的に変化する。
そのため、母材と表面の硬化層の間の密着性に優れ、硬
化層の剥離が生じにくい。また、炭化チタンは溶融金属
に対する耐溶損性に優れているので、上記の硬化層で覆
われた部材の耐溶損性を向上させることができる。According to the above method, since the carbon in the hardened layer is supplied from the inside of the base material, the boundary between the hardened layer and the base material does not become discontinuous, and the composition in the hardened layer is graded. Change.
Therefore, the adhesion between the base material and the hardened layer on the surface is excellent, and peeling of the hardened layer is unlikely to occur. Further, since titanium carbide has excellent erosion resistance to molten metal, it is possible to improve the erosion resistance of the member covered with the above-mentioned hardened layer.
【００１１】なお、上記の拡散熱処理の際の温度は、好
ましくは、９００℃以上、１１５０℃以下である。これ
は、９００℃より低い温度では、チタンの拡散が十分で
なく、１１５０℃を超える温度では、母材の組織が粗大
化して強度低下などの母材の劣化を招くためである。The temperature during the above diffusion heat treatment is preferably 900 ° C. or higher and 1150 ° C. or lower. This is because diffusion of titanium is not sufficient at a temperature lower than 900 ° C., and at a temperature higher than 1150 ° C., the structure of the base material is coarsened to cause deterioration of the base material such as strength reduction.
【００１２】また、好ましくは、上記の拡散熱処理を水
素雰囲気中で行う。[0012] Preferably, the above diffusion heat treatment is performed in a hydrogen atmosphere.
【００１３】上記の製造方法を適用する場合、好ましく
は、母材の炭素組成を０．１ｗｔ％以上５％ｗｔ以下と
する。When the above manufacturing method is applied, the carbon composition of the base material is preferably 0.1 wt% or more and 5% wt or less.
【００１４】母材中の炭素組成が０．１ｗｔ％以上の場
合に、緻密な炭化物層が形成される。炭素組成が０．１
ｗｔ％未満の場合には、チタンは基材表面に緻密な炭化
物層を形成せずに母材の内部まで拡散し、分散した状態
になってしまう。このため、炭素組成が０．１ｗｔ％未
満の場合には、０．１ｗｔ％以上の場合と比較して、溶
融金属に対する耐食性が大きくは向上しない。他方、炭
素組成が５ｗｔ％を超えた場合には、非常に薄い析出層
しか形成されず、実際の使用には適さない。A dense carbide layer is formed when the carbon composition in the base material is 0.1 wt% or more. Carbon composition is 0.1
If it is less than wt%, titanium will diffuse into the inside of the base material without forming a dense carbide layer on the surface of the base material and will be in a dispersed state. Therefore, when the carbon composition is less than 0.1 wt%, the corrosion resistance to molten metal is not significantly improved as compared with the case where the carbon composition is 0.1 wt% or more. On the other hand, when the carbon composition exceeds 5 wt%, only a very thin deposited layer is formed, which is not suitable for actual use.
【００１５】なお、上記方法において、チタンの代りに
クロムを用いることによって、母材の表層部に炭化クロ
ムが析出した硬化層を形成することができる。In the above method, by using chromium instead of titanium, it is possible to form a hardened layer in which chromium carbide is deposited on the surface layer of the base material.
【００１６】また、上記方法において、チタンとともに
クロムを用いることによって、母材の表層部に炭化チタ
ン及び炭化クロムが析出した硬化層を形成することがで
きる。In the above method, by using chromium together with titanium, it is possible to form a hardened layer in which titanium carbide and chromium carbide are deposited on the surface layer of the base material.
【００１７】[0017]
【発明の実施の形態】以下に、本発明の方法に基づい
て、ダイカストマシン用ピン（φ２５×１８０）を製作
した例について説明する。図１に、そのダイカストマシ
ン用ピンの概略形状を示す。BEST MODE FOR CARRYING OUT THE INVENTION An example in which a die casting machine pin (φ25 × 180) is manufactured based on the method of the present invention will be described below. FIG. 1 shows a schematic shape of the die casting machine pin.
【００１８】先ず、合金工具鋼ＳＫＤ６１製の素材を、
機械加工によって所定の形状に加工した。次に、このよ
うにして得られた部材の周囲をチタン（Ｔｉ）合金粉末
で覆った状態で、雰囲気調整が可能な電気炉内に収容
し、炉内に水素ガスを流しながら、１１００℃で３時間
の拡散熱処理を行った。このようにして、ＳＫＤ６１製
の母材の表層部にチタンを拡散させ、炭化チタンを析出
させた。次に、このようにして得られた部材に、研削加
工を施して、所定の製品形状に仕上げた。First, a material made of alloy tool steel SKD61 is
It was machined into a predetermined shape. Next, the member thus obtained was housed in an electric furnace in which the atmosphere can be adjusted with the titanium (Ti) alloy powder covered, and at 1100 ° C. while flowing hydrogen gas in the furnace. Diffusion heat treatment was performed for 3 hours. In this way, titanium was diffused into the surface layer of the base material made of SKD61, and titanium carbide was deposited. Next, the member thus obtained was subjected to grinding to finish into a predetermined product shape.
【００１９】図２に、以上のようにして製作されたダイ
カストマシン用ピンの表層部の顕微鏡組織写真を示す。
表層部に、約２０μｍの硬化層が形成されていることが
分る。このダイカストマシン用ピンの表層部を、Ｘ線回
折により分析したところ、炭化チタン（ＴｉＣ）が同定
された。FIG. 2 shows a microstructure photograph of the surface layer portion of the die casting machine pin manufactured as described above.
It can be seen that a hardened layer of about 20 μm is formed on the surface layer portion. When the surface layer of the die casting machine pin was analyzed by X-ray diffraction, titanium carbide (TiC) was identified.
【００２０】以上の様に、本発明の方法は、雰囲気調整
が可能な電気炉を用いれば実施することができる。炉内
に流すガスは、水素などの還元性ガスまたはアルゴンな
どの不活性ガスなどの比較的一般的なものである。これ
に対して、従来の方法の様にＣＶＤによって母材の表面
に炭化チタン層を形成する場合には、より複雑で大掛か
りな設備が必要となる。また、反応ガスにも、チタン及
び炭素の供給源となるより高価なガスを使用しなければ
ならない。従って、本発明の方法によれば、設備コスト
及びランニングコストを、従来のＣＶＤによる場合と比
較して、大幅に減らすことができる。前記のダイカスト
マシン用ピンの製造コストについて試算したところ、本
発明の方法によれば、従来のＣＶＤによる場合と比較し
て、ピン一本当たりの製造コストが５０％以下に低下す
ることが分った。As described above, the method of the present invention can be carried out by using an electric furnace whose atmosphere can be adjusted. The gas flowing into the furnace is a relatively common gas such as a reducing gas such as hydrogen or an inert gas such as argon. On the other hand, when the titanium carbide layer is formed on the surface of the base material by CVD as in the conventional method, more complicated and large-scale equipment is required. Further, as the reaction gas, a more expensive gas that serves as a supply source of titanium and carbon must be used. Therefore, according to the method of the present invention, the equipment cost and running cost can be significantly reduced as compared with the case of the conventional CVD. When the manufacturing cost of the die casting machine pin is calculated, it is found that the method of the present invention reduces the manufacturing cost per pin to 50% or less as compared with the conventional CVD method. It was
【００２１】なお、以上において、母材の表層部に炭化
チタンを析出させた例について説明したが、チタン合金
粉末の代りにクロム合金粉末を用いることによって、同
様な方法で、母材の表層部に炭化クロムが析出した硬化
層を形成することができた。Although an example in which titanium carbide is deposited on the surface layer portion of the base material has been described above, the surface layer portion of the base material is formed in the same manner by using chromium alloy powder instead of titanium alloy powder. It was possible to form a hardened layer in which chromium carbide was deposited.
【００２２】また、本発明の方法は、上記の例に示した
ダイカストマシン用ピンに限らず、ダイカストマシン用
の金型、入れ子、ラドル、熱電対保護管など、溶融金属
に接触する各種の部材に適用することができる。Further, the method of the present invention is not limited to the die casting machine pin shown in the above example, but various members that come into contact with molten metal, such as a die casting machine die, a nest, a ladle, and a thermocouple protection tube. Can be applied to.
【００２３】[0023]
【発明の効果】本発明の方法によれば、耐溶損性に優れ
たダイカストマシン用の部材を、従来の方法と比較し
て、より低いコストで製作することが可能になる。According to the method of the present invention, it is possible to manufacture a member for a die casting machine having excellent melting resistance at a lower cost as compared with the conventional method.
【図１】本発明の方法に基づいて製作されたダイカスト
マシン用ピンの概略形状を示す図。FIG. 1 is a view showing a schematic shape of a die casting machine pin manufactured based on the method of the present invention.
【図２】本発明の方法に基づいて製作されたダイカスト
マシン用ピンの表層部の顕微鏡組織写真。FIG. 2 is a microstructure photograph of a surface layer portion of a die casting machine pin manufactured based on the method of the present invention.
Claims (6)
囲気中でチタンを拡散させ、このチタンと母材中の炭素
とを反応させることにより、表層部に炭化チタンが析出
した硬化層を形成することを特徴とするダイカストマシ
ン用部材の製造方法。1. A hardened layer in which titanium carbide is deposited on the surface layer portion by diffusing titanium in the surface layer portion of a base material made of steel or cast iron in a high temperature atmosphere and reacting the titanium with carbon in the base material. A method for manufacturing a member for a die casting machine, which comprises forming
囲気中でクロムを拡散させ、このクロムと母材中の炭素
とを反応させることにより、表層部に炭化クロムが析出
した硬化層を形成することを特徴とするダイカストマシ
ン用部材の製造方法。2. A hardened layer in which chromium carbide is deposited on the surface layer portion by diffusing chromium in the surface layer portion of a base material made of steel or cast iron in a high temperature atmosphere and reacting the chromium with carbon in the base material. A method for manufacturing a member for a die casting machine, which comprises forming
囲気中でチタン及びクロムを拡散させ、これらのチタン
及びクロムと母材中の炭素とを反応させることにより、
表層部に炭化チタン及び炭化クロムが析出した硬化層を
形成することを特徴とするダイカストマシン用部材の製
造方法。3. By diffusing titanium and chromium in a surface layer portion of a base material made of steel or cast iron in a high temperature atmosphere and reacting these titanium and chromium with carbon in the base material,
A method for producing a member for a die casting machine, which comprises forming a hardened layer in which titanium carbide and chromium carbide are deposited on a surface layer portion.
５０℃以下の高温雰囲気中で行うことを特徴とする請求
項１から３のいずれかに記載のダイカストマシン用部材
の製造方法。4. The diffusion heat treatment is performed at 900.degree.
The method for producing a member for a die casting machine according to claim 1, wherein the method is performed in a high temperature atmosphere of 50 ° C. or lower.
ことを特徴とする請求項４に記載のダイカストマシン用
部材の製造方法。5. The method for manufacturing a member for a die casting machine according to claim 4, wherein the diffusion heat treatment is performed in a hydrogen atmosphere.
％以上５％ｗｔ以下であることを特徴とする請求項１か
ら３のいずれかに記載のダイカストマシン用部材の製造
方法。6. The carbon composition of the base material is 0.1 wt.
% Or more and 5% or less by weight, The method for manufacturing a member for a die casting machine according to any one of claims 1 to 3, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001374520A JP2003170262A (en) | 2001-12-07 | 2001-12-07 | Method for manufacturing die cast machine member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001374520A JP2003170262A (en) | 2001-12-07 | 2001-12-07 | Method for manufacturing die cast machine member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003170262A true JP2003170262A (en) | 2003-06-17 |
Family
ID=19183069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001374520A Pending JP2003170262A (en) | 2001-12-07 | 2001-12-07 | Method for manufacturing die cast machine member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003170262A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007205292A (en) * | 2006-02-02 | 2007-08-16 | Usui Kokusai Sangyo Kaisha Ltd | Ultra high pressure fuel piping and its manufacturing method |
| JP2009035761A (en) * | 2007-07-31 | 2009-02-19 | Nippon Karoraizu Kogyo Kk | High hardness, wear resistant parts and method of manufacturing the same |
| US7829138B2 (en) | 2004-03-22 | 2010-11-09 | Toshiba Kikai Kabushiki Kaisha | Metal material for parts of casting machine, molten aluminum alloy-contact member and method for producing them |
| US8333920B2 (en) | 2005-12-02 | 2012-12-18 | Toshiba Kikai Kabushiki Kaisha | Melt supply pipe for aluminum die casting |
| RU2493289C1 (en) * | 2012-04-24 | 2013-09-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Курганский государственный университет" | Method of diffusion titanising of cast iron products |
| US8580187B2 (en) | 2006-03-24 | 2013-11-12 | Toshiba Kikai Kabushiki Kaisha | Melt supply pipe for aluminum die casting |
| JP2018177543A (en) * | 2017-04-03 | 2018-11-15 | 住友電気工業株式会社 | Method of manufacturing iron carbide material, and iron carbide thin film material |
-
2001
- 2001-12-07 JP JP2001374520A patent/JP2003170262A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7829138B2 (en) | 2004-03-22 | 2010-11-09 | Toshiba Kikai Kabushiki Kaisha | Metal material for parts of casting machine, molten aluminum alloy-contact member and method for producing them |
| US8349468B2 (en) | 2004-03-22 | 2013-01-08 | Toshiba Kikai Kabushiki Kaisha | Metal material for parts of casting machine, molten aluminum alloy-contact member |
| US8333920B2 (en) | 2005-12-02 | 2012-12-18 | Toshiba Kikai Kabushiki Kaisha | Melt supply pipe for aluminum die casting |
| US8771789B2 (en) | 2005-12-02 | 2014-07-08 | Toshiba Kikai Kabushiki Kaisha | Method for producing melt supply pipe for aluminum die casting |
| JP2007205292A (en) * | 2006-02-02 | 2007-08-16 | Usui Kokusai Sangyo Kaisha Ltd | Ultra high pressure fuel piping and its manufacturing method |
| US8580187B2 (en) | 2006-03-24 | 2013-11-12 | Toshiba Kikai Kabushiki Kaisha | Melt supply pipe for aluminum die casting |
| JP2009035761A (en) * | 2007-07-31 | 2009-02-19 | Nippon Karoraizu Kogyo Kk | High hardness, wear resistant parts and method of manufacturing the same |
| RU2493289C1 (en) * | 2012-04-24 | 2013-09-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Курганский государственный университет" | Method of diffusion titanising of cast iron products |
| JP2018177543A (en) * | 2017-04-03 | 2018-11-15 | 住友電気工業株式会社 | Method of manufacturing iron carbide material, and iron carbide thin film material |
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