Method for preparing solid lubricant coating on copper base bearing bush

A technology of solid lubricating coating and bearing bush, applied in the direction of coating, lubricating composition, etc., can solve the problems of unsatisfactory lubricating performance, copper adhesion and insufficient wear resistance, improve emergency operation ability and service life, and solve the problem of wear resistance. Insufficient abrasiveness, good bonding effect

Active Publication Date: 2014-06-11
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a solid lubricating coating on copper-based bearing pads, which solves the problems of unsatisfactory lubricating performance, copper sticking and insufficient wear resistance of traditional copper-based metal bearing pads.

Method used

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  • Method for preparing solid lubricant coating on copper base bearing bush

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 100 grams of molybdenum disulfide, 20 grams of graphite, 10 grams of hexagonal boron nitride, 15 grams of cerium trifluoride, 35 grams of antimony trioxide and 5 grams of organic silicon resin into a grinding jar, add 100 grams of organic solvent for Grind and disperse; add 215 grams of polyamideimide and 650 grams of organic solvents again, stir to obtain solid lubricating coating (organic solvent is that N-methylpyrrolidone and aromatic hydrocarbon solvent mix by weight 3:1); The paint is evenly sprayed on the surface of the copper base of the metal bearing, and it is left to stand for 10-30 minutes to dry, then placed in an oven, kept at 280±10°C for 2-3 hours, and cooled to obtain a solid lubricating coating on the surface of the copper-based bearing.

Embodiment 2

[0025] Molybdenum disulfide 6.0%, graphite 3.0%, hexagonal boron nitride 2.0%, cerium trifluoride 1.5%, antimony trioxide 5.0%, polyamideimide 15.0%, polytetrafluoroethylene 2.0%, silicone resin 0.8 %, organic solvent balance (N-methylpyrrolidone and acetanilide are mixed by weight 3:1); method is the same as in Example 1.

Embodiment 3

[0027] Molybdenum disulfide 3.0%, graphite 2.0%, hexagonal boron nitride 3.0%, cerium trifluoride 0.7%, antimony trioxide 5.0%, polyamideimide 17.0%, polytetrafluoroethylene 5.0%, silicone resin 0.1 %, organic solvent balance (N-methylpyrrolidone and methylene chloride are mixed by weight 1:1.5); method is the same as in Example 1.

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Abstract

The invention discloses a method for preparing a solid lubricant coating on a copper base bearing bush. According to the invention, a selected suitable coating coats on the surface of the copper base bearing bush to form a curing coating. The coating has good adhesion with the metal copper alloy substrate, and can be used for a long time under 260 DEG C; and the coating has good lubricity, wear resistance and anti-copper sticking property, and can significantly reduce the friction coefficient of the alloy layer of the copper base bearing bush and reduce the phenomena of scratching, copper sticking and burnout of the copper base bearing bush and crankshaft under start and stop state, low machine oil viscosity state and oil free state, so as to improve wear resistance, emergency operation capability and service life of the copper base bearing bush.

Description

technical field [0001] The invention relates to a method for preparing a solid lubricating coating on a copper-based bearing bush, and belongs to the technical field of composite material preparation and coating. Background technique [0002] The bearing pad is the contact part between the sliding bearing and the shaft. When the sliding bearing is working, there are direct and indirect friction states between the bearing pad and the rotating shaft. Factors such as abnormalities cause burnt pads, increased wear and damage to sliding bearings, thus requiring the bearing pads to have good self-lubricating and wear-resistant properties. The disadvantage of the traditional three-metal bearing pad with steel back + copper alloy layer + coating structure is that its soft coating has insufficient wear resistance. Once the coating is damaged, the hard intermediate nickel grid layer will cause the bearing pad to quickly lose its emergency operation capability. Therefore, it is necess...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D179/08C09D127/18C09D7/12C10M169/04
Inventor 易戈文贾均红张晓亮张克金米新艳
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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