Composite surface treatment method for gear surface strengthening

A composite surface treatment and surface strengthening technology, used in heat treatment furnaces, heat treatment equipment, furnaces, etc., can solve problems such as temper softening, avoid temper softening, improve gear surface performance, and increase residual compressive stress.

Pending Publication Date: 2019-04-30
UNIV OF SHANGHAI FOR SCI & TECH
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The retrieval of prior art documents found that Yao Chengwu, Huang Jian and others published a paper on "Characteristics of Laser Quenching and Tempering Softening of Carbon Steel and Alloy Steel Lap Joints" in "Journal of Heat Treatment of Materials" in 2009, No. 30, pages 131-135 , studied 45 steel, Cr2Mo and W18Cr4V steel laser multi-channel lap quenching test, the results show that after laser quenching, there is temper softening in the lap zone on the surface

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Composite surface treatment method for gear surface strengthening
  • Composite surface treatment method for gear surface strengthening
  • Composite surface treatment method for gear surface strengthening

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be further described below.

[0033] The present invention proposes a composite surface treatment method for gear surface strengthening, including:

[0034] Step 1: Pretreatment and cleaning of gears;

[0035] Step 1.1: Carry out degreasing, derusting, cleaning and drying treatment on the surface of the gear;

[0036] Step 1.2: Coating a light-absorbing layer on the surface of the gear.

[0037] Step 2: Carry out laser quenching treatment on the tooth surface and tooth root surface of the gear;

[0038] Step 2.1: setting the parameters of the laser hardening process;

[0039] Step 2.2: Perform laser quenching treatment on the surface of the gear.

[0040] Step 3: Carry out shot peening and compound treatment on the tooth surface and tooth root;

[0041] Step 3.1: The surface of the gear is subjected to two shot-peeni...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention provides a composite surface treatment method for gear surface strengthening, and surface strengthening treatment can be conducted on wind power and automobile gears. According to the composite surface treatment method for gear surface strengthening, laser quenching treatment and shot blasting composite treatment are adopted, the problem of temper hardening caused by laser quenchingis avoided, meanwhile the residual compressive stress of a dedendum and the hardness value of a gear tooth surface are increased, and the gear surface performance is improved remarkably through the comprehensive coordinating effect of the residual compressive stress of the dedendum and the hardness values of the gear tooth surface.

Description

technical field [0001] The invention relates to the technical field of gear treatment, in particular to a composite surface treatment method for gear surface strengthening. Background technique [0002] The laser quenching process is a heat treatment process in which a high-energy laser beam is irradiated on the surface of the metal to be quenched, and the temperature of the irradiated area on the surface is instantly raised to the phase transition temperature, and the surface is cooled by air to produce a high-hardness quenched structure. At present, laser quenching technology, as a new type of heat treatment process, is gradually being applied to production practice. Compared with the traditional quenching process, laser quenching has the following advantages: (1) The heat treatment area can be precisely controlled; (2) The thermal deformation of the workpiece after laser quenching is small; (3) No coolant is required during the quenching process; (4) It is easy to carry o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/09C21D7/06C21D9/32
CPCC21D1/09C21D7/06C21D9/32
Inventor 詹科赵斌严雅
Owner UNIV OF SHANGHAI FOR SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap