WO1997015695A1 - Materiau pour palier a base de cuivre et palier coulissant pour moteur a combustion interne - Google Patents
Materiau pour palier a base de cuivre et palier coulissant pour moteur a combustion interne Download PDFInfo
- Publication number
- WO1997015695A1 WO1997015695A1 PCT/JP1996/003118 JP9603118W WO9715695A1 WO 1997015695 A1 WO1997015695 A1 WO 1997015695A1 JP 9603118 W JP9603118 W JP 9603118W WO 9715695 A1 WO9715695 A1 WO 9715695A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- copper
- bearing material
- bearing
- sliding
- internal combustion
- Prior art date
Links
- 239000000463 material Substances 0.000 title claims abstract description 49
- 238000002485 combustion reaction Methods 0.000 title claims description 11
- 239000010949 copper Substances 0.000 claims abstract description 48
- 229910052802 copper Inorganic materials 0.000 claims abstract description 31
- 229910052718 tin Inorganic materials 0.000 claims abstract description 17
- 229910052709 silver Inorganic materials 0.000 claims abstract description 14
- 239000006104 solid solution Substances 0.000 claims abstract description 14
- 239000012535 impurity Substances 0.000 claims abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 28
- 239000007787 solid Substances 0.000 claims description 11
- 239000011159 matrix material Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000000314 lubricant Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229910052745 lead Inorganic materials 0.000 claims description 4
- 229910052797 bismuth Inorganic materials 0.000 claims description 2
- 235000012745 brilliant blue FCF Nutrition 0.000 claims 1
- 229910000881 Cu alloy Inorganic materials 0.000 abstract description 11
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 20
- 238000012360 testing method Methods 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 16
- 239000000203 mixture Substances 0.000 description 14
- 229910000831 Steel Inorganic materials 0.000 description 9
- 230000004888 barrier function Effects 0.000 description 9
- 229910052759 nickel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- 239000010687 lubricating oil Substances 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 238000007747 plating Methods 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- -1 such as 0 Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910020888 Sn-Cu Inorganic materials 0.000 description 2
- 229910019204 Sn—Cu Inorganic materials 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 235000002498 Azalea indica Nutrition 0.000 description 1
- 244000020190 Azalea indica Species 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910020174 Pb-In Inorganic materials 0.000 description 1
- 229910020220 Pb—Sn Inorganic materials 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229910020816 Sn Pb Inorganic materials 0.000 description 1
- 229910020836 Sn-Ag Inorganic materials 0.000 description 1
- 229910007637 SnAg Inorganic materials 0.000 description 1
- 229910020988 Sn—Ag Inorganic materials 0.000 description 1
- 229910018956 Sn—In Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004453 electron probe microanalysis Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 235000020083 shōchū Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- DZXKSFDSPBRJPS-UHFFFAOYSA-N tin(2+);sulfide Chemical compound [S-2].[Sn+2] DZXKSFDSPBRJPS-UHFFFAOYSA-N 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0425—Copper-based alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
- B22F3/1007—Atmosphere
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/02—Alloys based on copper with tin as the next major constituent
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases
- F02F7/0085—Materials for constructing engines or their parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
- F16C33/121—Use of special materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
- F16C9/02—Crankshaft bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
- F16C9/04—Connecting-rod bearings; Attachments thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2201/00—Treatment under specific atmosphere
- B22F2201/01—Reducing atmosphere
- B22F2201/013—Hydrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2204/00—Metallic materials; Alloys
- F16C2204/10—Alloys based on copper
- F16C2204/12—Alloys based on copper with tin as the next major constituent
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S384/00—Bearings
- Y10S384/90—Cooling or heating
- Y10S384/912—Metallic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12687—Pb- and Sn-base components: alternative to or next to each other
- Y10T428/12694—Pb- and Sn-base components: alternative to or next to each other and next to Cu- or Fe-base component
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12903—Cu-base component
Definitions
- the present invention relates to a copper-based slide bearing material and a slide bearing for an internal combustion engine, and more specifically, to a novel composition used as an internal combustion engine bearing such as an engine main bearing and a connector bearing.
- the present invention relates to a copper-based sliding bearing material having such a structure and a structure, and a sliding bearing such as an engine main bearing and a connecting rod bearing using such a material.
- a plain bearing of a general internal combustion engine is made of a low carbon steel such as SAE1010 or 1020, as described in Japanese Patent Application Laid-Open No. 60-145345. It is obtained by sintering so-called lining of a copper-based alloy consisting of Pb: about 8 to 35%, Sn: about 10% or less, and the remainder Cu on the strip.
- the overlay has been provided with a thickness of 20 ⁇ or more so as to exhibit sliding bearing performance such as seizure resistance by itself, in addition to being familiar with the shaft.
- thickening should be avoided in terms of the cost of sliding bearing materials.
- the present invention provides a copper-based sliding bearing material and a sliding bearing for an internal combustion engine that can solve the above-mentioned problems.
- a first aspect of the present invention is that, by weight percentage, Ag: 0.1 to 2%, and Sn: 1 to 10%, the balance consisting of Cu and unavoidable impurities, wherein the Ag and Sn are A copper-based plain bearing material with excellent seizure resistance characterized by being completely or substantially dissolved in a Cu matrix without substantially forming a second phase. ,
- a second aspect of the present invention is characterized by comprising the above-mentioned copper-based plain bearing material, and an overlay made of a soft metal having a thickness of l to 25 Atm or a solid lubricant and a resin.
- a third aspect of the present invention is a sliding bearing for an internal combustion engine, wherein the overlay is directly bonded to the sliding bearing material without an intermediate layer. For bearings.
- Ag contained in the copper-based alloy improves seizure resistance by being uniformly and finely dispersed in the Cu matrix.
- the preferred Ag content is between 0.4 and 1%.
- Sn enhances the hardness and strength of the Cu matrix through solid solution, and also improves the corrosion resistance and shochu adhesion. If the Sn content is less than 1%, there is no effect of improving the anti-adhesion property, while if it exceeds 10%, the copper alloy becomes too hard, resulting in poor conformability in bearings, and Cu 3 Sn The compound ( ⁇ phase) starts to precipitate and the seizure resistance deteriorates.
- the preferred Sn content is ⁇ 2-7%.
- P 0.5% or less of P can be further added to the above composition.
- P itself does not particularly contribute to the sliding properties, but as a deoxidizer during powder atomization, it improves the flow of molten metal to improve the properties of the powder and enables sintering at a relatively low temperature. I do.
- P acts as a deoxidizing agent in the production of structural materials, and improves the flow of molten metal to reduce structural defects.
- the amount of solute oxygen that would hinder the precipitation of Ag and Sn during use of the bearing is reduced by the addition of P, and the amount of Sn and Ag maintained in the solute is increased, resulting in good seizure resistance become. Therefore, when the amount of oxygen in the copper alloy is large, it is preferable to add P. However, when the P content exceeds 0.5%, the copper alloy becomes hard and brittle.
- the preferred P content is 0.05-0.15%.
- a particularly preferred composition is Cu-l% Ag-5% Sn, in which the content of A ⁇ and S ⁇ exceeds the solid solubility limit of the equilibrium state. Demonstrate.
- Elements other than the above components are impurities usually contained in copper, such as 0, Fe, As, and Ni. The smaller these elements are, the better. In particular, oxygen may hinder the precipitation of forcedly dissolved Ag (see Figure 3 below), and Pb causes corrosion due to the S component in the lubricating oil. Since other components have no beneficial effect, it is preferable to limit the total to about 1% or less.
- the copper-based alloy of the present invention does not contain Pb, which is a soft metal, as an essential component, but has extremely good sliding characteristics without Cu adhering to the mating material. . However, Pb and Bi may be added to a copper-based alloy in an amount of 4% or less in order to impart free cutting properties. Next, the structure of the copper alloy according to the present invention will be described.
- the solid solubility limit at equilibrium is about 2% for Sn and about 0.2% for Ag. Therefore, the alloy composition of the present invention The contents of these elements range from less than the solid solubility limit to more than the solid solubility limit.
- the solid solution state is preferably a complete solid solution, but may be a substantially solid solution state in which a secondary phase is hardly detected.
- substantially solid solution state refers to an X-ray photograph of each component such as Ag, which is observed by an image analyzer, and the area of the secondary phase in an arbitrary observation field ( ⁇ 1000) is 5% or less.
- Ag concentrates on the surface during use of the bearing to form an AgS compound, and this phenomenon is considered to be the cause of the dramatic improvement in the sliding performance of the sliding bearing material of the present invention.
- approximately 500-60 O'C to preheated thickness is is 1. 5 mm about the steel sheet (S PCC) N pouring molten metal within 2 atmosphere, cooled 1 00 ° or more CZ seconds after its Water cooling from the backing of the steel plate at a speed is preferred.
- the contents of Ag and Sn may be lower than the solid solubility limit in an equilibrium state, but it is also preferable to rapidly cool to prevent segregation of these elements.
- the sliding bearing material of the present invention does not need to be reinforced with a thick overlay as in the conventional case, the overlay only needs to have a thickness necessary to conform to the shaft. xm, preferably 2-8 ⁇ m.
- Overlays include Pb-In, Pb-Sn-Cu, Pb-Sn-In, Pb-Sn-In-Cu alloy, S Various metal overlays such as n-based plating and In-based plating can be used. Furthermore, Boriimido a solid lubricant such as Mo S 2 (PI), polyamide Midoimido (PA I), bound by a resin binder such as epoxy resin Overlays can also be used.
- PI Mo S 2
- PA I polyamide Midoimido
- the overlay since the overlay only needs to have a function to make it familiar, the overlay does not need to have a long-term performance so as to cause the depletion of Sn, and from this viewpoint, the nickel barrier is not suitable. Necessary, and by actively removing the nickel barrier, seizure due to the exposed nickel barrier can be prevented, and on the contrary, the excellent seizure resistance of the exposed lining can be utilized.
- the surface of the copper-based plain bearing material can be subjected to a treatment to enhance the adhesion to the overlay by etching, shot blasting, or plating.
- the phenomena observed when the copper-based material according to the present invention 1 and the copper-based material ⁇ for comparison are used as bearings are as follows: (a) The solute Ag in the matrix indicates that the bearing is in use. 1 8 0 e C) to react with S Ingredients in the lubricating oil deposited on the sliding surface that form a very thin film of a g 2 S is a g- S compound (1); (mouth No precipitation of Ag can be detected inside the lining more than 1 m away from the sliding surface. (1); (c) Ag precipitated as the second phase from the early stage of use of the bearing is too hard and has poor sliding characteristics.
- FIG. 1 is a graph showing the relationship between the Ag content and the area ratio of the Ag precipitated portion.
- FIG. 2 is a graph showing the relationship between the Ag content and the seizure load.
- Figure 3 shows a SEM image of Ag of a copper-based material containing 4% Ag. You.
- FIG. 4 is a diagram showing a stick-slip tester.
- FIG. 5 is a view showing a seizure tester. BEST MODE FOR CARRYING OUT THE INVENTION
- Fig. 1 shows the results of measuring the Ag deposition area ratio
- Fig. 2 shows the seizure load of this material.
- Figures 1 and 2 show that (a) the seizure load increases dramatically with the Ag content when Ag is completely dissolved in 1% or less; (mouth) The Ag content is 1.
- Fig. 3 shows an example of the precipitation form of the Ag secondary phase.
- Sn is also a solute element of the Cu matrix, it will have excellent sliding characteristics. If it precipitates as a secondary phase before the use of the bearing, it will be hard and brittle, degrading the sliding characteristics.
- the solute Sn precipitates on the sliding surface during use of the bearing, and Ag also precipitates where Sn precipitates. Therefore, it is presumed that compounds such as Ag 2 S, Ag 3 Sn, and Sn S are formed on the sliding surface as a secondary phase, and that these compounds improve the sliding characteristics.
- Example 1 Example 1
- SPCC backing steel plate
- Fig. 4 1 is a test piece, 2 is a heater, and 3 is a steel ball that moves on the sample surface while applying a load.
- the test conditions were as follows.
- Table 1 shows the results of the stick-slip test. 1 Composition (wt /%) Cu adhesion area when stick-slip occurs
- Comparative Example 6 is made of pure copper, and adhesion of the test piece occurs at low temperature even if the adhesion area of the test piece is large.
- Comparative Example 7 in which small amounts of Ag and P were added, the tendency of adhesion was somewhat suppressed.
- Sn When a large amount of Sn is added (Comparative Examples 8, 10), the tendency of adhesion is further suppressed.
- Pb and Sn are added in combination (Comparative Example 9), adhesion is completely suppressed. In contrast, in Examples 1 to 5 of the present invention, adhesion was completely suppressed without adding Pb.
- a copper alloy sintered material having the composition shown in Table 2 was produced in the same manner as in Example 1.
- the seizure resistance of the obtained sintered material was investigated with a pin-on-disk tester shown in Fig. 5.
- 5 is a hydraulic cylinder
- 6 is a lubricating pad
- 7 is a test piece
- 8 is a disk as a sliding partner
- 9 is a balance weight that balances with the hydraulic cylinder
- 10 is a load cell.
- test conditions were as follows.
- Comparative Example 20 is a typical composition example of the conventional Kelmet, and it can be seen from comparison with this performance that the seizure resistance of Examples 11 to 15 of the present invention is improved to less than twice. .
- the materials of the examples of the present invention have excellent seizure resistance despite containing no Pb.
- a copper-based sliding bearing material with the composition shown in Table 3 was prepared to produce a sliding bearing for a conrod bow of a diesel engine with a turbocharger (displacement 2400 cc). did.
- the overlay was formed by a method of combining electric plating with a fluoride bath and diffusion of In, and a method of baking a mixture with a resin was used for a solid lubricant-based overlay.
- the sliding characteristics of each slide bearing were evaluated by the following method.
- Table 3 shows the test results.
- the test conditions were as follows.
- Comparative Example 34 is a normal Kelmet bearing with an overlay, but is a comparative example in which the thickness of the overlay is thin enough to be familiar, and seizure occurs under the experimental conditions.
- Comparative Example 35 in which a small amount (0.05%) of Ag was added and Pb was removed, seizure was more likely to occur.
- Comparative Example 36 in which the Ag content was further increased and Sn was added in a large amount, and in Comparative Example 37 in which only Ag was added in a large amount, seizure was slightly less likely to occur.
- the examples of the present invention have a very small amount of wear and have excellent seizure resistance.
- the Sn content is at least very good (Examples 22 and 24).
- the Cu—Sn—Ag based copper alloy according to the present invention has a very excellent seizure resistance required as a plain bearing and causes corrosion due to deteriorated lubricating oil. It is characterized by being a lead-free material without Pb or a material with a small amount of lead added.
- a copper alloy of this composition is conventionally used as a spring, a contact material or an electric component (for example, see Japanese Patent Application Laid-Open Nos. 49-75417, 50-771). No. 7216, JP-A-2-2-28439, JP-A-1991-195173), Ag that precipitated on the sliding surface during use as a bearing after forced solid solution,
- the material of the present invention utilizing the Sn secondary phase for improving the performance is a material which should be particularly noted from the viewpoint of the metallographic structure control technology as compared with these known materials.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Combustion & Propulsion (AREA)
- Sliding-Contact Bearings (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9713528A GB2312679B (en) | 1995-10-27 | 1996-10-25 | Copper-based sliding-bearing material and sliding bearing for internal combustion engines |
DE19681103T DE19681103T1 (de) | 1995-10-27 | 1996-10-25 | Gleitlagermaterial auf Kupferbasis und Gleitlager für Verbrennungsmotoren |
US08/860,441 US6025081A (en) | 1995-10-27 | 1996-10-25 | Copper-based bearing material and sliding bearing for internal combustion engines |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30393695A JP3373709B2 (ja) | 1995-10-27 | 1995-10-27 | 銅系すべり軸受材料および内燃機関用すべり軸受 |
JP7/303936 | 1995-10-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997015695A1 true WO1997015695A1 (fr) | 1997-05-01 |
Family
ID=17927072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1996/003118 WO1997015695A1 (fr) | 1995-10-27 | 1996-10-25 | Materiau pour palier a base de cuivre et palier coulissant pour moteur a combustion interne |
Country Status (5)
Country | Link |
---|---|
US (1) | US6025081A (ja) |
JP (1) | JP3373709B2 (ja) |
DE (1) | DE19681103T1 (ja) |
GB (1) | GB2312679B (ja) |
WO (1) | WO1997015695A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6770381B2 (en) * | 1998-02-24 | 2004-08-03 | Taiho Kogyo Co., Ltd. | Sliding bearing for internal combustion engine |
Families Citing this family (24)
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KR100255143B1 (ko) * | 1996-03-14 | 2000-05-01 | 후쿠마 노부오 | 내시저성이 우수한 구리합금 및 슬라이딩베어링 |
DE19728777C2 (de) | 1997-07-05 | 2001-03-15 | Federal Mogul Wiesbaden Gmbh | Schichtverbundwerkstoff für Gleitlager sowie Verfahren zur Herstellung von Lagerschalen |
JP3472198B2 (ja) * | 1999-06-09 | 2003-12-02 | 大同メタル工業株式会社 | すべり軸受 |
JP3421724B2 (ja) * | 1999-09-13 | 2003-06-30 | 大同メタル工業株式会社 | 銅系摺動材料 |
JP3507388B2 (ja) * | 2000-02-08 | 2004-03-15 | 大同メタル工業株式会社 | 銅系摺動材料 |
JP2002126850A (ja) * | 2000-10-23 | 2002-05-08 | Chuetsu Metal Works Co Ltd | 可変容量圧縮機用複合斜板の製造方法 |
JP2002295473A (ja) * | 2001-03-28 | 2002-10-09 | Senju Metal Ind Co Ltd | 鉛フリージャーナル軸受 |
KR101223789B1 (ko) * | 2001-10-08 | 2013-01-18 | 페더럴-모걸 코오포레이숀 | 베어링 및 무연 베어링의 제조방법 |
US6588934B2 (en) * | 2001-10-29 | 2003-07-08 | United Technologies Corporation | Silver-containing copper alloys for journal bearings |
JP3754353B2 (ja) * | 2001-11-15 | 2006-03-08 | 大同メタル工業株式会社 | 複合めっき被膜付き摺動部材 |
DE102005055366A1 (de) * | 2004-12-10 | 2006-06-14 | Mahle International Gmbh | Pleuel für einen Verbrennungsmotor und Verfahren zur Beschichtung seiner Gleitlagerflächen |
WO2008018348A1 (ja) | 2006-08-05 | 2008-02-14 | Taiho Kogyo Co. Ltd. | Pbフリー銅合金摺動材料 |
US8679641B2 (en) | 2007-01-05 | 2014-03-25 | David M. Saxton | Wear resistant lead free alloy bushing and method of making |
KR101140191B1 (ko) * | 2007-02-14 | 2012-05-02 | 다이호 고교 가부시키가이샤 | Pb 프리 구리기 소결 슬라이딩 재료 |
KR20090110380A (ko) * | 2007-03-12 | 2009-10-21 | 다이호 고교 가부시키가이샤 | 미끄럼 베어링 |
CN102728839B (zh) * | 2007-05-15 | 2014-09-17 | 大丰工业株式会社 | 不含Pb的铜合金滑动材料的制造方法 |
WO2009093664A1 (ja) | 2008-01-23 | 2009-07-30 | Taiho Kogyo Co., Ltd. | 焼結銅合金摺動材の製造方法及び焼結銅合金摺動材 |
US8854068B2 (en) * | 2008-08-18 | 2014-10-07 | Mitsubishi Electric Corporation | Diagnostic method for oil-filled electrical device, diagnostic device for implementing the diagnostic method, and oil-filled electrical device provided with the diagnostic device |
JP2010196813A (ja) | 2009-02-25 | 2010-09-09 | Daido Metal Co Ltd | 摺動部材 |
EP2403966B1 (en) | 2009-03-03 | 2020-05-06 | Questek Innovations LLC | Lead-free, high-strength, high-lubricity copper alloys |
WO2013073068A1 (ja) | 2011-11-16 | 2013-05-23 | エム・テクニック株式会社 | 銀銅合金粒子の製造方法 |
CN102392213B (zh) * | 2011-11-17 | 2013-06-26 | 西安航空动力控制有限责任公司 | 一种用于强化铜或铜合金表面硬度的工艺方法 |
US9908637B2 (en) * | 2014-05-23 | 2018-03-06 | The Boeing Company | Modified shank fasteners for electromagnetic effect (EME) technology |
US11137014B2 (en) | 2019-01-08 | 2021-10-05 | The Boeing Company | Conductive fastening system and method for improved EME performance |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5794501A (en) * | 1981-09-28 | 1982-06-12 | Taiho Kogyo Co Ltd | Sliding material and its manufacture |
US4551395A (en) * | 1984-09-07 | 1985-11-05 | D.A.B. Industries, Inc. | Bearing materials |
JPS6458812A (en) * | 1987-08-31 | 1989-03-06 | Nippon Dia Clevite Co | Overlay structure for sliding bearing |
JPH02228439A (ja) * | 1989-03-01 | 1990-09-11 | Tanaka Kikinzoku Kogyo Kk | 摺動接点材料 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3576833D1 (de) * | 1985-11-04 | 1990-05-03 | Jpi Transport Prod | Werkstoffe fuer lager. |
JPS63149140A (ja) * | 1986-12-15 | 1988-06-21 | 大同メタル工業株式会社 | 複合摺動体 |
US5066456A (en) * | 1990-08-10 | 1991-11-19 | J. W. Harris Co., Inc. | Phosphorous copper based alloy with tin and antimony |
KR100255143B1 (ko) * | 1996-03-14 | 2000-05-01 | 후쿠마 노부오 | 내시저성이 우수한 구리합금 및 슬라이딩베어링 |
US5820701A (en) * | 1996-11-07 | 1998-10-13 | Waterbury Rolling Mills, Inc. | Copper alloy and process for obtaining same |
US5832360A (en) * | 1997-08-28 | 1998-11-03 | Norton Company | Bond for abrasive tool |
-
1995
- 1995-10-27 JP JP30393695A patent/JP3373709B2/ja not_active Expired - Lifetime
-
1996
- 1996-10-25 DE DE19681103T patent/DE19681103T1/de not_active Ceased
- 1996-10-25 US US08/860,441 patent/US6025081A/en not_active Expired - Lifetime
- 1996-10-25 GB GB9713528A patent/GB2312679B/en not_active Expired - Lifetime
- 1996-10-25 WO PCT/JP1996/003118 patent/WO1997015695A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5794501A (en) * | 1981-09-28 | 1982-06-12 | Taiho Kogyo Co Ltd | Sliding material and its manufacture |
US4551395A (en) * | 1984-09-07 | 1985-11-05 | D.A.B. Industries, Inc. | Bearing materials |
JPS6458812A (en) * | 1987-08-31 | 1989-03-06 | Nippon Dia Clevite Co | Overlay structure for sliding bearing |
JPH02228439A (ja) * | 1989-03-01 | 1990-09-11 | Tanaka Kikinzoku Kogyo Kk | 摺動接点材料 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6770381B2 (en) * | 1998-02-24 | 2004-08-03 | Taiho Kogyo Co., Ltd. | Sliding bearing for internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
JP3373709B2 (ja) | 2003-02-04 |
GB2312679A (en) | 1997-11-05 |
JPH09125176A (ja) | 1997-05-13 |
DE19681103T1 (de) | 1998-01-08 |
US6025081A (en) | 2000-02-15 |
GB2312679B (en) | 1999-06-23 |
GB9713528D0 (en) | 1997-09-03 |
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