Copper base alloy sliding bearing

A sliding bearing and copper-based alloy technology, applied in metal material coating process, coating, powder coating and other directions, can solve the problems of limiting the service life of bearing materials in internal combustion engines, insufficiently refined organization, low matrix strength, etc., and achieve improvement Corrosion resistance, improved bond strength, improved shear strength

Active Publication Date: 2013-09-11
启东市万润机床附件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] At present, the structure of bearing wear-resistant materials is mainly composed of soft disperse phase distributed on a hard matrix. To improve the wear resistance of the material, the particle size and distribution of the disperse phase must be improved, and the performance of the matrix must be improved. Existing alloys There are also shortcomings of insufficient microstructure and low matrix strength, which limit the service life of bearing materials in internal combustion engines

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A. Preparation of bearing alloy body

[0052] (1) Weigh each raw material component of the alloy body according to the following ratio,

[0053] Copper 76 wt%

[0054] Rare earth metals 0.6 wt%

[0055] Tin 7.8 wt%

[0056] Silver 2.3 wt%

[0057] The balance is lead;

[0058] Wherein, the weight percent of described rare earth metal is composed of:

[0059] Ce 46 wt%

[0060] Lanthanum 17 wt%

[0061] Praseodymium 4 wt%

[0062] Neodymium 18 wt%

[0063] The balance is other rare earth elements;

[0064] (2) Before smelting, except for copper, other objects that need to be put into the furnace body are baked in an oven at 200°C for about 1 hour to prevent water vapor from being brought in during the smelting process;

[0065] (3) Put the electrolytic copper, tin and lead blocks into the medium frequency induction furnace after baking, first heat with low power for 3 minutes, then increase t...

Embodiment 2

[0080] A. Preparation of bearing alloy body

[0081] (1) Weigh each raw material component of the alloy body according to the following ratio,

[0082] Copper 79 wt%

[0083] Rare earth metals 1.2 wt%

[0084] Tin 6.3 wt%

[0085] Silver 1.7 wt%

[0086] The balance is lead;

[0087] Wherein, the weight percent of described rare earth metal is composed of:

[0088] Ce 47 wt%

[0089] Lanthanum 21 wt%

[0090] Praseodymium 5 wt%

[0091] Neodymium 15 wt%

[0092] The balance is other rare earth elements;

[0093](2) Before smelting, except for copper, other objects that need to be put into the furnace body are baked in an oven at 200°C for about 1 hour to prevent water vapor from being brought in during the smelting process;

[0094] (3) Put the electrolytic copper, tin and lead blocks into the medium-frequency induction furnace after baking, first heat with low power for 4 minutes, then increase th...

Embodiment 3

[0109] A. Preparation of bearing alloy body

[0110] (1) Weigh each raw material component of the alloy body according to the following ratio,

[0111] Copper 83 wt%

[0112] Rare earth metals 1.9 wt%

[0113] Tin 5.5 wt%

[0114] Silver 0.1 wt%

[0115] The balance is lead;

[0116] Wherein, the weight percent of described rare earth metal is composed of:

[0117] Ce 49 wt%

[0118] Lanthanum 31 wt%

[0119] Praseodymium 7 wt%

[0120] Neodymium 11 wt%

[0121] The balance is other rare earth elements;

[0122] (2) Before smelting, except for copper, other objects that need to be put into the furnace body are baked in an oven at 200°C for about 1 hour to prevent water vapor from being brought in during the smelting process;

[0123] (3) Put the electrolytic copper, tin and lead blocks into the medium frequency induction furnace after baking, first heat with low power for 5 minutes, then increase t...

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Abstract

The invention relates to a copper base alloy sliding bearing. The copper base alloy sliding bearing is obtained by adding lanthanum cerium misch metal in a copper base alloy raw material, preparing a bearing alloy body through spray deposition, preparing a coating material, and completing coating through a plasma spurt method. Compared with a traditional casting copper base alloy, the sliding bearing provided by the invention has the advantages that the wear-resisting property is obviously improved, the attrition rate is greatly reduced, and the corresponding coating has the good tribological property.

Description

technical field [0001] The invention relates to a copper-based alloy sliding bearing, in particular to a sliding bearing with improved composition and a wear-resistant layer. [0002] Background technique [0003] Copper is one of the earliest metals discovered and used by humans. It is characterized by high electrical and thermal conductivity and good plasticity. It ranks third in these properties after gold and silver. Despite its long life, advances in copper metallurgy continued. Pure copper has a face-centered cubic character, no allotropic transformation, high plasticity and low strength. It is not suitable for direct use as a structural material, and is mostly used as a raw material for preparing copper alloys. [0004] The strength of pure copper is not high, so to meet the requirements of structural parts, copper alloying must be carried out. The purpose of copper alloying is mainly to achieve solid solution strengthening, aging strengthening and excess ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/02C23C24/10C09D1/00C09D5/03C22C1/02C22C1/04
Inventor 张康
Owner 启东市万润机床附件有限公司
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