Method for processing m50nil bearing steel, strengthening m50nil bearing steel and bearing

A technology for bearing steel and bearings, applied in the direction of solid-state diffusion coating, vacuum evaporation coating, coating, etc., can solve the problems of unsatisfactory bearing strength and contact fatigue resistance

Active Publication Date: 2018-10-02
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the fact that the current service conditions of the bearings used in the aviation industry are getting worse and worse, and they work under severe conditions such as heavy loads, high speeds, and high temperatures, so higher requirements are placed on the mechanical properties of materials. Compared with ordinary bearings, M50NiL The bearing material has high temperature resistance, but because the material contains more nickel, the strength and contact fatigue resistance of the bearing still cannot meet the bearing performance requirements under heavy load and high-speed high-temperature conditions

Method used

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  • Method for processing m50nil bearing steel, strengthening m50nil bearing steel and bearing
  • Method for processing m50nil bearing steel, strengthening m50nil bearing steel and bearing
  • Method for processing m50nil bearing steel, strengthening m50nil bearing steel and bearing

Examples

Experimental program
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Effect test

Embodiment 1

[0060] First, use metal degreasing solvent to remove the grease on the M50NiL bearing steel material, so that there is no grease on the surface, then put the M50NiL bearing steel material to be treated in non-polluting tetrachlorethylene for 30 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 M50NiL bearing steel material with metal derusting solvent for 20 minutes to remove the rust spots on the surface of the material; then put it in acetone, ultrasonically clean it for 20 minutes, take it out and wipe it with a clean silk cloth Dry; then put the M50NiL bearing steel material into alcohol, ultrasonically clean it for 20 minutes, take it out, and dry it with a clean silk cloth. Impurities remain, and at the same time do not use the contaminated or soaked silk cloth to wipe the test piece. Finally, put the treated M50NiL bearing steel into deionized water, take it out after ultrasonic c...

Embodiment 2

[0062] First, use metal degreasing solvent to remove the grease on the M50NiL bearing steel material, so that there is no grease on the surface, then put the M50NiL 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 M50NiL bearing steel material with metal derusting solvent for 20 minutes to remove the rust spots on the surface of the material; then put it in acetone, ultrasonically clean it for 25 minutes, take it out and wipe it with a clean silk cloth Dry; then put the M50NiL bearing steel material into alcohol, ultrasonically clean it for 25 minutes, take it out, and dry it with a clean silk cloth. When drying, wipe it in the same direction on the smooth surface of the material to ensure that there is no water stain and Impurities remain, and at the same time do not use the contaminated and soaked silk clo...

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Abstract

The invention discloses a method for treating M50NiL bearing steel, strengthened M50NiL bearing steel and a bearing. The method comprises steps as follows: (1) nitrogen ion and carbon ion co-permeation is performed on the surface of the M50NiL bearing steel with ion beams; (2) first rare-earth ions are implanted into the surface of the M50NiL bearing steel obtained in the step (1) with ion beams; (3) second rare-earth ions are implanted into the surface of the M50NiL bearing steel obtained in the step (2) with ion beams; (4) implantation treatment is performed on the M50NiL bearing steel obtained in the step (3) with ion beams; (5) metal ions and gas ions are alternately implanted into the surface of the M50NiL bearing steel obtained in the step (4) with ion beams, so that the strengthened M50NiL bearing steel is obtained. With the method, the wear resistance and the contact fatigue resistance of the M50NiL bearing steel can be remarkably improved, implantation and low-energy bombardment diffusion permeation treatment are completed once with the method, environmental pollution and high energy consumption caused by traditional heat treatment are obviously reduced, and the treatment efficiency is 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 M50NiL bearing steel, strengthening the M50NiL bearing steel and bearings. Background technique [0002] Compared with the traditional bearing steel M50 steel, the composition of M50NiL steel reduces the content of C element, increases the alloy element Ni, and adds many other types of alloy elements, such as Mn, Mo, among which Ni element improves the toughness of the core and Increase the fracture resistance, so it is a high-temperature bearing material widely used in aerospace bearings. Due to the fact that the current service conditions of the bearings used in the aviation industry are getting worse and worse, and they work under severe conditions such as heavy loads, high speeds, and high temperatures, so higher requirements are placed on the mechanical properties of materials. Compared with ordinar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/48C23C8/38
CPCC23C8/38C23C14/48
Inventor 金杰邵天敏
Owner TSINGHUA UNIV
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