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Method for treating M50 bearing steel, strengthened M50 bearing steel and bearing

A bearing steel and bombardment treatment technology, applied in the direction of metal material coating process, coating, solid diffusion coating, etc., can solve the problems of poor contact fatigue performance and low hardness, improve friction and wear, reduce pollution and high consumption. energy, the effect of increasing the depth of the ion implantation layer

Active Publication Date: 2017-03-22
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

M50 bearing steel material has higher high-temperature performance than ordinary bearing materials, but the hardness of this material is low, and the contact fatigue performance is poor
[0003] Therefore, the performance of the existing strengthened M50 bearing steel needs to be further improved

Method used

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  • Method for treating M50 bearing steel, strengthened M50 bearing steel and bearing
  • Method for treating M50 bearing steel, strengthened M50 bearing steel and bearing
  • Method for treating M50 bearing steel, strengthened M50 bearing steel and bearing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] First, use metal degreasing solvent to remove the grease on the M50 bearing steel material, so that there is no grease on the surface, then put the M50 bearing steel material to be treated in non-polluting tetrachlorethylene for 20 minutes, take it out, and use rice paper to absorb the residue After the solvent is removed, wipe it with clean silk; then soak and clean the M50 bearing steel material with metal derusting solvent for 15 minutes to remove the rust spots on the surface of the material; then put it in acetone, ultrasonically clean it for 30 minutes, take it out and wipe it with a clean silk cloth Dry; finally soak and clean the M50 bearing steel material with a metal cleaning agent with organic matter removal function for 15 minutes, so that no organic matter remains on the surface of the metal sample, and then put the treated M50 bearing steel material into deionized water and ultrasonically clean it for 20 minutes Then take it out, wipe it with a clean silk c...

Embodiment 2

[0074] First, use metal degreasing solvent to remove the grease on the M50 bearing steel material, so that there is no grease on the surface, then put the M50 bearing steel material to be treated into non-polluting tetrachlorethylene and soak it for 30 minutes, then take it out, and use rice paper to absorb the residue After the solvent is removed, wipe it with clean silk; then soak and clean the M50 bearing steel material with metal derusting solvent for 15 minutes to remove the rust spots on the surface of the material; then put it in acetone, ultrasonically clean it for 30 minutes, take it out and wipe it with a clean silk cloth Dry; finally soak and clean the M50 bearing steel material with a metal cleaning agent with organic matter removal function for 15 minutes, so that no organic matter remains on the surface of the metal sample, and then put the treated M50 bearing steel material into deionized water and ultrasonically clean it for 20 minutes Finally, take them out, sc...

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Abstract

The invention discloses a method for treating M50 bearing steel, strengthened M50 bearing steel and a bearing. The method comprises the steps that firstly, a low-energy gas ion beam is used for cleaning the M50 bearing steel; secondly, a high-energy ion beam is adopted for injecting a first rare earth element into the surface of the M50 bearing steel obtained in the first step; thirdly, the high-energy ion beam is adopted for injecting at least one of the carbon element and the nitrogen element into the surface of the M50 bearing steel obtained in the second step; fourthly, the high-energy ion beam is adopted for injecting a second rare earth element into the surface of the M50 bearing steel obtained in the third step; fifthly, low-energy large beam ions are adopted for conducting bombardment treatment on the M50 bearing steel obtained in the fourth step; sixthly, the high-energy ion beam is adopted for alternately injecting metal ions and gas ions in the surface of the M50 bearing steel obtained in the fifth step; and seventhly, under gas protection, cooling treatment is conducted on the M50 bearing steel obtained in the sixth step, and the strengthened M50 bearing steel is obtained. By means of the method, friction and abrasion resistance, fatigue resistance, corrosion resistance and other comprehensive performance of an M50 bearing steel material can be greatly improved.

Description

technical field [0001] The invention belongs to the field of surface strengthening treatment of metal materials. Specifically, the invention relates to a method for treating M50 bearing steel, strengthening the M50 bearing steel and bearings. Background technique [0002] High-reliability and high-precision bearings for aero-engines have become one of the key technologies in China's aero-engine research and development. Taking the main bearing of an aero-engine as an example, the main bearing is one of the key components of an aero-engine. Operating under conditions of high speed, high temperature, and complex stress, the quality and performance of the main bearing directly affect the performance, life and reliability of the engine, and one of the key indicators of an aero engine is high reliability. At present, M50 bearing steel material is a high-temperature bearing material widely used in aviation bearings. The bearings are under great pressure and friction during operat...

Claims

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Application Information

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IPC IPC(8): C23C12/00
CPCC23C12/00
Inventor 金杰邵天敏
Owner TSINGHUA UNIV
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