Unlock instant, AI-driven research and patent intelligence for your innovation.

A wear-resistant bearing

A bearing bush and wear-resistant coating technology, applied in the field of wear-resistant bearing bushes, can solve the problems of limiting the service life of bearing materials in internal combustion engines, insufficiently refined organization, low matrix strength, etc. The effect of abrasion resistance

Inactive Publication Date: 2016-04-13
江苏环球智能机械科技发展股份有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] 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 disadvantages of insufficient microstructure and low matrix strength, which limit the service life of bearing materials in internal combustion engines

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A. Preparation of bearing alloy body

[0048] (1) Weigh each raw material component of the alloy body according to the following ratio,

[0049] Copper 76wt%

[0050] Rare earth metal 0.6wt%

[0051] Tin 7.8wt%

[0052] The balance is lead;

[0053] Wherein, the weight percent of described rare earth metal is composed of:

[0054] Ce 46wt%

[0055] Lanthanum 17wt%

[0056] Praseodymium 4wt%

[0057] Neodymium 18wt%

[0058] The balance is other rare earth elements;

[0059] (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;

[0060] (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 the power to melt the above raw materials, then add rare earth metals, and then melt at 1150°C 30min, s...

Embodiment 2

[0075] A. Preparation of bearing alloy body

[0076] (1) Weigh each raw material component of the alloy body according to the following ratio,

[0077] Copper 79wt%

[0078] Rare earth metal 1.2wt%

[0079] Tin 6.3wt%

[0080] The balance is lead;

[0081] Wherein, the weight percent of described rare earth metal is composed of:

[0082] Ce 47wt%

[0083] Lanthanum 21wt%

[0084] Praseodymium 5wt%

[0085] Neodymium 15wt%

[0086] The balance is other rare earth elements;

[0087] (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;

[0088] (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 the power to melt the above raw materials, then add rare earth metals, and then melt at 1200°C 25min, s...

Embodiment 3

[0103] A. Preparation of bearing alloy body

[0104] (1) Weigh each raw material component of the alloy body according to the following ratio,

[0105] Copper 83wt%

[0106] Rare earth metal 1.9wt%

[0107] Tin 5.5wt%

[0108] The balance is lead;

[0109] Wherein, the weight percent of described rare earth metal is composed of:

[0110] Ce 49wt%

[0111] Lanthanum 31wt%

[0112] Praseodymium 7wt%

[0113] Neodymium 11wt%

[0114] The balance is other rare earth elements;

[0115] (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;

[0116] (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 the power to melt the above raw materials, then add rare earth metals, and then melt at 1250°C 20min, sti...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
microhardnessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a wear-resisting bearing bushing. Lanthanum-cerium misch metal is added in a copper-based alloy raw material, and a bearing bushing alloy body is prepared through spray deposition; then a coating material is prepared through a plastic spraying method. Compared with a conventional casting copper-based alloy, the wear-resisting bearing bushing provided by the invention has the advantages that the wear resistance is remarkably improved, the wear rate is greatly reduced, and the corresponding coating also has an excellent tribology performance.

Description

technical field [0001] The invention relates to a wear-resistant material, in particular to a wear-resistant bearing bush. Background technique [0002] 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. [0003] 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 phase strengthening, so as to obtain high-strength copper alloys. Acco...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F16C33/12
Inventor 汪清明
Owner 江苏环球智能机械科技发展股份有限公司