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Method for improving anti-wear/anti-fatigue performance of carburized gear by utilizing comprehensive means

A carburizing gear and anti-wear technology, which is applied to components with teeth, belts/chains/gears, gear teeth, etc., can solve problems such as difficult to meet the use requirements, improve reliability and service life, and avoid lamination loose effect

Active Publication Date: 2020-04-21
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the structural characteristics of aero-engine gears and the problem that the existing carburizing process is difficult to meet the use requirements, the present invention provides a method for improving the wear / fatigue resistance of carburized gears by comprehensive means

Method used

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  • Method for improving anti-wear/anti-fatigue performance of carburized gear by utilizing comprehensive means
  • Method for improving anti-wear/anti-fatigue performance of carburized gear by utilizing comprehensive means

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Carry out a comprehensive approach to the aero-engine gear, and the specific implementation steps are as follows:

[0031] 1. Clamp the gear on the laser shock strengthening equipment, and adjust the manipulator so that the laser shock strengthening area of ​​the gear is roughly perpendicular to the light outlet;

[0032] 2. According to the laser parameters: laser wavelength 1064nm, pulse width 20ns, and gear material characteristics, set the laser power density to 5.5GW / cm 2 , the diameter of the spot is 2.4mm, the overlap rate of the spot is 50%, there is no absorbing protective layer on the gear surface, and the water-constrained layer is loaded, and the two-way laser shock strengthening with an angle of 45° to the normal vertical line of the gear tooth surface is carried out.

[0033] 3. Install the strengthened gear on the fixture of the grinding machine, the amount of feed is 0.03mm at one time, and the amount of feed is 0.01mm at the last time, to complete the g...

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Abstract

The invention discloses a method for improving anti-wear / anti-fatigue performance of a carburized gear by utilizing comprehensive means, and belongs to a surface strengthening treatment technology. The method specifically comprises the following steps of laser shock peening-grinding-shot blasting. According to the method, a laser impact peening, grinding and shot blasting combined strengthening treatment process is adopted, the process compensates for the defect of a single process, and also exerts the respective advantages, the surface hardness and residual compressive stress of the aero-engine transmission gear are effectively improved, the anti-wear performance and the anti-fatigue performance of the carburized gear are improved, and the requirements of industrial application are met.

Description

technical field [0001] The invention belongs to the technical field of surface strengthening treatment, and relates to a method for improving the anti-wear / fatigue of carburized gears by comprehensive means, specifically the combined application of laser shock strengthening, grinding and shot peening, the purpose of which is to improve the anti-wear / fatigue of carburized gears. wear and fatigue resistance. Background technique [0002] As a key transmission component of aircraft, especially helicopter engines, gears are the core components to realize torque and torque transmission. The safe use of aircraft and the reliable operation of engines are affected by the reliability of aviation transmission gears. At present, my country's aviation equipment transmission gear components are facing problems such as short life, poor reliability, and many early failures, mainly manifested as contact fatigue such as root bending fatigue, "pitting corrosion" on the gear meshing surface, a...

Claims

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Application Information

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IPC IPC(8): C23C8/80C21D7/06B23F5/02C21D10/00
CPCB23F5/02C21D7/06C21D10/005C23C8/80
Inventor 臧顺来颜雪源罗思海何卫锋
Owner XI AN JIAOTONG UNIV
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