CN109296643B - Double-layer metal composite material applied to sliding bearing and preparation method thereof - Google Patents
Double-layer metal composite material applied to sliding bearing and preparation method thereof Download PDFInfo
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- CN109296643B CN109296643B CN201811445551.3A CN201811445551A CN109296643B CN 109296643 B CN109296643 B CN 109296643B CN 201811445551 A CN201811445551 A CN 201811445551A CN 109296643 B CN109296643 B CN 109296643B
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- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/003—Alloys based on aluminium containing at least 2.6% of one or more of the elements: tin, lead, antimony, bismuth, cadmium, and titanium
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- 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
- C22C9/01—Alloys based on copper with aluminium as the next major constituent
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- 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
- F16C33/122—Multilayer structures of sleeves, washers or liners
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- 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
- F16C33/14—Special methods of manufacture; Running-in
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- 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
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- 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
- F16C2204/20—Alloys based on aluminium
- F16C2204/22—Alloys based on aluminium with tin as the next major constituent
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- 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
- F16C2204/30—Alloys based on one of tin, lead, antimony, bismuth, indium, e.g. materials for providing sliding surfaces
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- 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
- F16C2220/00—Shaping
- F16C2220/24—Shaping by built-up welding
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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)
- Sliding-Contact Bearings (AREA)
Abstract
The invention relates to a double-layer metal composite material applied to a sliding bearing and a preparation method thereof, wherein a bearing layer of the double-layer metal composite material is made of copper alloy, and an antifriction alloy layer is made of medium-high tin aluminum-based alloy, wherein the content of tin in the medium-high tin aluminum-based alloy is 10-50 wt%, the sum of the mass percentage of aluminum and tin is more than or equal to 90%, the aluminum and tin are main alloy elements, and the medium-high tin aluminum-based alloy is multi-element alloy; the preparation method comprises the following steps: preparing and processing a bearing layer copper alloy according to requirements; preparing a welding wire from the medium-high tin-aluminum base alloy; the welding wire is overlaid on the surface of the copper alloy to be used as an antifriction alloy layer, and the double-layer metal composite material applied to the sliding bearing is obtained. The double-layer metal composite material has high bonding strength, the copper alloy has good fatigue strength, thermal conductivity and corrosion resistance, and the medium-high tin-aluminum-based alloy has good fatigue strength, seizure resistance and embedding property.
Description
Technical Field
The invention relates to a double-layer metal composite material applied to a sliding bearing and a preparation method thereof, in particular to a double-layer metal composite material applied to a sliding bearing and formed by combining a copper alloy and a medium-high tin-aluminum-based alloy through overlaying welding and a preparation method thereof.
Background
The sliding bearing is an important part of a rotor power system and plays an extremely important role in the normal operation of industrial equipment. Especially in the heavy load field with more rigorous working conditions, higher requirements are provided for the mechanical properties of the sliding bearing material. The obtained double-layer metal composite material formed by combining the low-carbon steel and the babbitt metal through a centrifugal casting process has limitations, and the fatigue strength, the bonding strength, the wear resistance, the temperature resistance and the thermal conductivity of the double-layer metal composite material cannot meet more severe working conditions. The obtained double-layer metal composite material formed by combining the low-carbon steel and the babbit alloy through the surfacing process has limitation, the combination strength is obviously improved, but the wear resistance and the temperature resistance of the composite material cannot meet the requirements of more severe working conditions, the fatigue strength of the babbit alloy is greatly reduced along with the increase of the temperature, and the heat conduction performance of the babbit alloy is also limited in application. The obtained double-layer metal composite material formed by combining the low-carbon steel and the copper alloy through the surfacing process has limitation, has poor seizure resistance and embedding property, is easy to bite or scratch a working rotating shaft, and causes the scrapping of the working rotating shaft and even large-scale failure of equipment.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a double-layer metal composite material applied to a sliding bearing and a preparation method thereof.
The purpose of the invention is realized by the following technical scheme:
the invention relates to a double-layer metal composite material applied to a sliding bearing, which comprises a bearing layer and an antifriction alloy layer compounded on the bearing layer; the bearing layer is a copper alloy layer, and the antifriction alloy layer is a medium-high tin aluminum-based alloy layer; the mass percentage of the tin element in the medium-high tin-aluminum-based alloy is 10-50%, the sum of the mass percentage of the aluminum element and the mass percentage of the tin element is more than or equal to 90%, and the aluminum element and the tin element are main alloy elements. When the aluminum-based alloy is used for a friction-reducing alloy layer of a sliding bearing, a coating needs to be added on the surface of the friction-reducing alloy layer to improve the friction resistance and embedding property of the sliding bearing material, so that the technological process and the cost are increased. When the sum of the mass percent of the aluminum element and the mass percent of the tin element in the aluminum-based alloy is more than or equal to 90 percent, and the mass percent of the tin element is more than 50 percent, the aluminum-based alloy does not belong to the category of the aluminum-based alloy, and the material is too soft and is not suitable for a sliding bearing material. When the mass percent of the tin element in the aluminum-tin alloy is 10-50%, and the sum of the mass percent of the tin element and the aluminum element is less than 90%, the main elements, except the aluminum element and the tin element, may contain other elements, and do not belong to the category of the high-tin-aluminum-based alloy in the invention.
Preferably, the copper alloy of the copper alloy layer includes brass, lead bronze, tin bronze, aluminum bronze, silicon bronze or beryllium bronze.
Preferably, the medium-high tin aluminum-based alloy is a multi-element alloy.
Preferably, the medium-high tin aluminum-based alloy also contains one or more other chemical elements for enhancing the mechanical properties of the medium-high tin aluminum-based alloy.
Preferably, the mechanical property comprises one or more of yield strength, fatigue strength, bearing capacity, impact resistance, wear resistance, corrosion resistance, seizure resistance, embeddability, friction reduction, coefficient of thermal expansion, hardness, toughness, elasticity, plasticity, temperature resistance, thermal conductivity and lipophilicity.
Preferably, the medium-high tin-aluminum-based alloy further contains one or more of copper, nickel, silicon, iron, manganese, titanium, lead, chromium, zinc, magnesium, silver, indium, lithium and rare earth elements. The addition of the elements aims to enhance the mechanical property of the medium-high tin aluminum-based alloy.
More preferably, the medium-high tin aluminum-based alloy contains one or more of copper, nickel and silicon.
The invention also relates to a preparation method of the double-layer metal composite material, which comprises the following steps:
s1, preparing and processing a copper alloy for the bearing layer, so that the surface roughness of the medium-high tin aluminum-based alloy material to be subjected to surfacing welding composite reaches Ra0.01-Ra3.2;
s2, preparing the medium-high tin aluminum-based alloy into a medium-high tin aluminum-based alloy welding wire;
and S3, overlaying the medium-high tin-aluminum-based alloy welding wire on the copper alloy surface which is processed in the step S1 and needs to be overlaid and compounded with the medium-high tin-aluminum-based alloy material to be used as an antifriction alloy layer, and obtaining the double-layer metal composite material.
Preferably, step S1 further includes the step of cleaning the processed copper alloy to remove oil stains and fine particles on the surface.
Preferably, step S2 further includes cleaning and removing oil stains and fine particles on the surface of the medium-high tin-aluminum-based alloy welding wire.
Preferably, in step S3, the overlaying is performed by one of oxy-acetylene flame welding, argon arc welding and cold metal transition welding.
The invention also relates to a sliding bearing made of the double-layer metal composite material, which comprises a radial sliding bearing, a thrust sliding bearing and a sliding bearing integrating the functions of the radial sliding bearing and the thrust sliding bearing.
Preferably, the sliding bearing is a fixed sliding bearing or a tilting pad sliding bearing.
Compared with the existing double-layer metal composite material applied to the sliding bearing and the preparation method thereof, the invention has the following beneficial effects:
1. the copper alloy and the medium and high tin aluminum-based alloy both have excellent heat-conducting property, can conduct heat generated in the working process of the sliding bearing, avoid the locking of the sliding bearing and a working rotating shaft caused by thermal expansion, and simultaneously avoid the seizure of the sliding bearing and the working rotating shaft caused by high temperature caused by a large amount of accumulated heat; the excellent heat-conducting property of the invention is particularly suitable for the heavy-load field generating a large amount of sliding friction heat.
2. The high-tin aluminum-based alloy and the copper alloy are combined through a surfacing process, and have high bonding strength, so that the high-tin aluminum-based alloy can be firmly combined on the surface of the copper alloy in the working process as an antifriction alloy layer; the excellent bonding strength of the invention is particularly suitable for the heavy-duty field.
3. The medium-high tin aluminum-based alloy is surfacing-welded on the surface of the copper alloy, and the excellent seizure resistance, embedding property and fatigue strength of the medium-high tin aluminum-based alloy can be fully utilized.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading the description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic view of a two-layer metal composite according to the present invention; wherein, 1 is a bearing layer, and 2 is an antifriction alloy layer.
Detailed Description
The present invention will be described in detail with reference to specific examples. It should be understood that the specific embodiments described are only a few embodiments of the invention, and not all embodiments. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
This embodiment relates to a bimetallic composite, as shown in fig. 1, comprising a load bearing layer 1 and an antifriction alloy layer 2 composited thereon; the bimetal composite material bearing layer 1 is made of aluminum bronze, and the mass percentage of main elements of the aluminum bronze are 85% of copper element, 10.0% of aluminum element, 3.0% of iron element and 1.5% of manganese element. The antifriction alloy layer 2 is made of medium-high tin aluminum-based alloy, and the main elements of the medium-high tin aluminum-based alloy comprise 78% of aluminum element, 20% of tin element and 1.0% of copper element in percentage by mass.
The preparation method of the double-layer metal composite material applied to the sliding bearing comprises the following steps:
firstly, preparing and processing a bearing layer aluminum bronze material, wherein the surface roughness of the bearing layer aluminum bronze material to be subjected to surfacing welding reaches Ra0.8;
secondly, putting the processed bearing layer aluminum bronze material into an acetone solution, and cleaning with ultrasonic waves to remove oil stains and micro particles on the surface;
thirdly, preparing the medium-high tin-aluminum-based alloy into a medium-high tin-aluminum-based alloy welding wire, placing the medium-high tin-aluminum-based alloy welding wire in an acetone solution, and cleaning with ultrasonic waves to remove oil stains and micro particles on the surface;
and fourthly, overlaying the medium-high tin-aluminum-based alloy welding wire on the surface of the copper alloy by using an argon arc welding method to form an antifriction alloy layer, so as to obtain the double-layer metal composite material applied to the sliding bearing.
The bonding strength of the present example was measured according to GB/T1174-92 cast bearing alloy to obtain a bonding strength of the material of the carrier layer and the material of the antifriction alloy layer of not less than 90 MPa.
Example 2
This embodiment relates to a bimetallic composite, as shown in fig. 1, comprising a load bearing layer 1 and an antifriction alloy layer 2 composited thereon; the bimetal composite material bearing layer 1 is made of tin bronze, and the mass percentage of the main elements of the tin bronze are 88.5% of copper element, 10.0% of tin element and 1.0% of phosphorus element. The antifriction alloy layer 2 is made of medium-high tin aluminum-based alloy, and the mass percentage of main elements of the medium-high tin aluminum-based alloy are 59% of aluminum element, 40% of tin element and 0.5% of copper element.
The preparation method of the double-layer metal composite material applied to the sliding bearing comprises the following steps:
firstly, preparing and processing a bearing layer aluminum bronze material, wherein the surface roughness of the bearing layer aluminum bronze material to be subjected to surfacing welding reaches Ra0.8;
secondly, putting the processed bearing layer aluminum bronze material into an acetone solution, and cleaning with ultrasonic waves to remove oil stains and micro particles on the surface;
thirdly, preparing the medium-high tin-aluminum-based alloy into a medium-high tin-aluminum-based alloy welding wire, placing the medium-high tin-aluminum-based alloy welding wire in an acetone solution, and cleaning with ultrasonic waves to remove oil stains and micro particles on the surface;
and fourthly, overlaying the medium-high tin-aluminum-based alloy welding wire on the surface of the copper alloy by using an argon arc welding method to form an antifriction alloy layer, so as to obtain the double-layer metal composite material applied to the sliding bearing.
The bonding strength of the present example was measured according to GB/T1174-92 cast bearing alloy to obtain a bonding strength of the material of the carrier layer and the material of the antifriction alloy layer of not less than 85 MPa.
In summary, the invention relates to a double-layer metal composite material applied to a sliding bearing and a preparation method thereof, wherein a bearing layer is made of copper alloy, an antifriction alloy layer is made of medium-high tin-aluminum-based alloy, and a surfacing welding method is adopted for preparation. Compared with the traditional double-layer metal composite material formed by combining the low-carbon steel and the babbit alloy through a centrifugal casting process, the copper alloy has better heat-conducting property compared with the low-carbon steel, and the medium-high tin aluminum-based alloy has better heat-conducting property compared with the babbit alloy, so that the double-layer metal composite material formed by combining the copper alloy and the medium-high tin aluminum-based alloy has better heat-radiating capacity compared with the double-layer metal composite material formed by combining the low-carbon steel and the babbit alloy and the double-layer metal composite material formed by combining the low-carbon steel and the copper alloy, heat generated in the operation process of the sliding bearing can be conducted out more quickly, and the sliding bearing is prevented from being occluded or locked with. Compared with babbitt metal, the medium and high tin aluminum base alloy has higher fatigue strength, and the fatigue strength of the babbitt metal is reduced by 60 percent along with the temperature rising from 0 ℃ to 160 ℃, and the fatigue strength of the medium and high tin aluminum base alloy is reduced by within 2 percent. Compared with babbitt metal, the medium-high tin aluminum base alloy gold has higher temperature resistance, so that the alloy can be applied to higher working temperature. The invention finds that the medium-high tin aluminum-based alloy with the tin element content of more than or equal to 10 percent and less than or equal to 50 percent has excellent anti-biting property and hiding property as the babbitt metal. In addition, the preparation method of the double-layer metal composite material adopts a surfacing process, and has higher bonding strength compared with the traditional centrifugal casting process. The invention can enable the sliding bearing to be applied under more severe working conditions.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (5)
1. The preparation method of the double-layer metal composite material applied to the sliding bearing is characterized in that the double-layer metal composite material comprises a bearing layer and an antifriction alloy layer compounded on the bearing layer; the bearing layer is a copper alloy layer, and the antifriction alloy layer is a medium-high tin aluminum-based alloy layer; the medium-high tin-aluminum-based alloy is a copper-containing multi-element alloy, wherein the mass percentage of tin element is 10-50%, the sum of the mass percentages of aluminum element and tin element is more than or equal to 90%, and the aluminum element and the tin element are main alloy elements; the copper alloy of the copper alloy layer is tin bronze, aluminum bronze, silicon bronze or beryllium bronze;
the method comprises the following steps:
s1, preparing and processing a copper alloy for the bearing layer, so that the surface roughness of the medium-high tin aluminum-based alloy material to be subjected to surfacing welding composite reaches Ra0.01-Ra3.2;
s2, preparing the medium-high tin aluminum-based alloy into a medium-high tin aluminum-based alloy welding wire;
and S3, overlaying the medium-high tin-aluminum-based alloy welding wire on the copper alloy surface which is processed in the step S1 and needs to be overlaid and compounded with the medium-high tin-aluminum-based alloy material to be used as an antifriction alloy layer, and obtaining the double-layer metal composite material.
2. The method as claimed in claim 1, wherein step S1 further comprises the step of cleaning the processed copper alloy to remove oil stains and fine particles on the surface.
3. The preparation method of claim 1, wherein the step S2 further comprises cleaning and removing oil stains and fine particles on the surface of the medium-high tin aluminum-based alloy welding wire.
4. The preparation method according to claim 1, wherein in the step S3, the surfacing welding is performed by one of oxy-acetylene flame welding, argon arc welding and cold metal transition welding.
5. A sliding bearing made of a double-layered metal composite material manufactured according to the method of claim 1, wherein the sliding bearing includes a plain radial bearing, a thrust sliding bearing, and a sliding bearing integrating functions of the plain radial bearing and the thrust sliding bearing.
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| CN201811445551.3A CN109296643B (en) | 2018-11-29 | 2018-11-29 | Double-layer metal composite material applied to sliding bearing and preparation method thereof |
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| CN201811445551.3A CN109296643B (en) | 2018-11-29 | 2018-11-29 | Double-layer metal composite material applied to sliding bearing and preparation method thereof |
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| CN109296643B true CN109296643B (en) | 2020-07-14 |
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| CN112908953B (en) * | 2021-02-03 | 2022-11-01 | 百色市彩虹铝业有限公司 | 5G base station chip heat dissipation plate and manufacturing method |
| CN112943800B (en) * | 2021-04-17 | 2022-09-06 | 宋振亚 | Manufacturing method of sliding oil film bearing bush |
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| CN1341157A (en) * | 1999-02-25 | 2002-03-20 | 曼B与W狄赛尔公司 | Method for producing a wear-resistant surface on components consisting of steel and machine with at least one component of this type |
| CN1524136A (en) * | 2001-03-13 | 2004-08-25 | Electrolyte media for the deposition of tin alloys and methods for depositing tin alloys | |
| CN101614241A (en) * | 2008-05-27 | 2009-12-30 | 株式会社东芝 | The mild alloy layer forms device and mild alloy layer formation method |
| CN101845569A (en) * | 2010-06-23 | 2010-09-29 | 广州市安达汽车零件有限公司 | Copper base alloy material for sliding bearing |
| CN104837621A (en) * | 2012-12-13 | 2015-08-12 | 联合莫古尔威斯巴登有限公司 | Plain bearing composite material |
| CN104889690A (en) * | 2015-06-01 | 2015-09-09 | 陈鹏 | Bearing bush of internal combustion engine |
-
2018
- 2018-11-29 CN CN201811445551.3A patent/CN109296643B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1341157A (en) * | 1999-02-25 | 2002-03-20 | 曼B与W狄赛尔公司 | Method for producing a wear-resistant surface on components consisting of steel and machine with at least one component of this type |
| CN1524136A (en) * | 2001-03-13 | 2004-08-25 | Electrolyte media for the deposition of tin alloys and methods for depositing tin alloys | |
| CN101614241A (en) * | 2008-05-27 | 2009-12-30 | 株式会社东芝 | The mild alloy layer forms device and mild alloy layer formation method |
| CN101845569A (en) * | 2010-06-23 | 2010-09-29 | 广州市安达汽车零件有限公司 | Copper base alloy material for sliding bearing |
| CN104837621A (en) * | 2012-12-13 | 2015-08-12 | 联合莫古尔威斯巴登有限公司 | Plain bearing composite material |
| CN104889690A (en) * | 2015-06-01 | 2015-09-09 | 陈鹏 | Bearing bush of internal combustion engine |
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