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High temperature resistant self-lubricating bearing material and preparation method thereof

A self-lubricating bearing and high temperature resistant technology, applied in the field of lubricating materials, can solve the problems of insufficient high temperature wear resistance, low friction coefficient wear resistance and other problems, and achieve the effects of easy parameter control, safety and environmental protection in the production process, and low price.

Inactive Publication Date: 2013-01-30
JIANGSU JINGU STAINLESS STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high-temperature-resistant self-lubricating bearing material, which can overcome the problem of insufficient high-temperature wear resistance of existing bearing materials, and still has a low friction coefficient and good wear resistance in a high-temperature environment of 600°C Excellent performance, can be used for a long time in the occasion without oil lubrication

Method used

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  • High temperature resistant self-lubricating bearing material and preparation method thereof
  • High temperature resistant self-lubricating bearing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) A high-temperature-resistant self-lubricating bearing material is composed as follows by weight percentage:

[0020] MoS 2 15%, CaF 2 5%, Mo10%, Co3%, Cu12%, sodium stearate 3%, the balance is 06Cr19Ni10 stainless steel powder;

[0021] (2) First put the metal powder, lubricant powder and sodium stearate into the roller ball mill and mix them. The mixing method adopts the dry mixing method, the ball-to-material ratio is 5:1, and the time is 3 hours;

[0022] (3) Put the ball-milled mixture into the bearing mold, press it under a pressure of 600Mpa, keep the pressure for 20 minutes during the pressing process, and obtain the bearing blank;

[0023] (4) Put the bearing blank into a vacuum sintering furnace for sintering. The sintering temperature is 1100°C, and the temperature is raised at a heating rate of 10°C / min. After reaching the set temperature, it is kept for 1 hour, and then cooled with the furnace;

[0024] (5) Finally, the obtained bearing blank is subje...

Embodiment 2

[0027] (1) A high-temperature-resistant self-lubricating bearing material is composed as follows by weight percentage:

[0028] MoS 2 20%, CaF 2 5%, Mo8%, Co5%, Cu10%, sodium stearate 3%, the balance is 06Cr19Ni10 stainless steel powder;

[0029] (2) Put the metal powder, lubricant powder and sodium stearate into the roller ball mill and mix them. The mixing method adopts the dry mixing method, the ball-to-material ratio is 5:1, and the time is 3 hours;

[0030] (3) Put the ball-milled mixture into the bearing mold, press it under a pressure of 600Mpa, keep the pressure for 20 minutes during the pressing process, and obtain the bearing blank;

[0031] (4) Put the bearing blank into a vacuum sintering furnace for sintering. The sintering temperature is 1200°C, and the temperature is raised at a heating rate of 10°C / min. After reaching the set temperature, it is kept for 1 hour, and then cooled with the furnace;

[0032] (5) Finally, the obtained bearing blank is subjected to...

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Abstract

The invention discloses a high temperature resistant self-lubricating bearing material and a preparation method thereof. The method comprises: mainly taking 06Cr19Ni10 stainless steel powder as the matrix material, selecting high purity (greater than or equal to 95%) Cu, Mo, and Co metal powder as the reinforcement phase, selecting MoS2 and CaF2 as the lubricating friction reduction phase, and simultaneously adding a proper amount of sodium stearate as the binder, then performing cold press molding and pressureless vacuum sintering, thus obtaining the bearing material. The high temperature resistant self-lubricating bearing material prepared by the method provided in the invention can still have a low friction coefficient and good abrasion resistance under a high temperature environment of 600DEG C, can be applied in steel, metallurgy and other heavy machinery equipment, and is especially suitable for occasions requiring oil-free lubrication.

Description

technical field [0001] The invention relates to the field of lubricating materials, in particular to a method for preparing a high-temperature-resistant self-lubricating bushing material. Background technique [0002] With the development of modern science and technology, the problems of friction, wear and lubrication of materials under high temperature conditions have attracted more and more attention. Ordinary lubricating grease is easily oxidized and evaporated in a high temperature environment, resulting in lubrication failure. In particular, the existence of impurities in the dusty environment, high impact strength and other factors will greatly reduce the lubricating performance of the grease. Solid self-lubricating materials are new types of lubricating materials completely different from traditional lubricating materials (lubricating oil, grease, etc.). Traditional lubricating materials form a fluid or semi-fluid film on the friction interface to effectively lubric...

Claims

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Application Information

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IPC IPC(8): C22C32/00C22C38/52B22F1/00B22F3/16
Inventor 李长生董增武唐华许吉国
Owner JIANGSU JINGU STAINLESS STEEL
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