Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Axle remanufacturing method, remanufactured axle and system

A remanufacturing and axle technology, applied in coating, metal material coating process, etc., can solve problems such as surface residual stress and surface tissue deterioration, improve product quality and service life, eliminate residual tensile stress, and avoid damage Effect

Active Publication Date: 2021-06-04
CRRC QINGDAO SIFANG CO LTD
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the deficiencies in the prior art, the first object of the present invention is to provide a method for axle remanufacturing, which solves the problems of residual stress on the surface of the remanufactured axle and the deterioration of surface tissue, and at the same time introduces compressive stress at the repaired position to improve the remanufacturing process. Product quality and service life of axles

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
  • Axle remanufacturing method, remanufactured axle and system
  • Axle remanufacturing method, remanufactured axle and system
  • Axle remanufacturing method, remanufactured axle and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] In a typical implementation of the present invention, an axle remanufacturing method includes the following content:

[0068] 1) Laser cladding remanufacturing

[0069] Use a lathe to remove scratches on the axle shaft with a depth of 0.2 mm. After removing the scratches, use magnetic particle inspection to confirm whether the removal of the defects is complete.

[0070] The hollow axle to be repaired is clamped on the lathe, specifically clamped by a three-jaw chuck, a semiconductor laser is used to emit laser light, and laser cladding is carried out on the position of the axle to be repaired by coaxial powder feeding. Specifically, iron-based powder can be selected As filler material for laser cladding of axles.

[0071] Laser cladding process parameters are: laser power 2-2.5kw; spot diameter 3mm; scanning speed: 8-10mm / s; lapping amount: 50%; distance between nozzle and workpiece: 10-15mm. Laser cladding is carried out according to the above process parameters. Th...

Embodiment 2

[0103] This embodiment provides a remanufactured axle, which is manufactured through the axle remanufacturing method described in Embodiment 1.

Embodiment 3

[0105] This embodiment provides a processing system for remanufacturing an axle, including:

[0106] Lathe, which can realize the removal of the scratch defect of the axle, and can realize the rough machining of the axle, and there can be multiple lathes;

[0107] Laser cladding equipment, used for laser cladding on the axle, the laser cladding equipment can be installed on the lathe;

[0108] The package kit, which can be wrapped on the axle completed by laser cladding, is used to insulate the area where the laser cladding layer of the axle is set to the center of the axle;

[0109] The laser shock strengthening equipment is used to carry out laser shock strengthening on the rough-machined axle. The laser shock head is clamped by the manipulator of the robot, and the robot is set on the side of the lathe.

[0110] Of course, the processing system also includes a kerosene tank, which can cool down the axle after the first wrapping and heat preservation.

[0111] In addition,...

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
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses an axle remanufacturing method, a remanufactured axle and a system, solves the problems of surface residual stress and surface structure deterioration of the remanufactured axle, and has the beneficial effects of improving the product quality of the remanufactured axle and prolonging the service life of the remanufactured axle. The specific scheme is as follows: the axle remanufacturing method comprises the following steps: removing a scratch defect part of the axle; carrying out a plurality of layers of laser cladding on the removed to-be-repaired area of the axle to form a laser cladding layer; and after laser cladding of the axle is completed, quenching the to-be-repaired area of the axle, in the quenching process, heating the to-be-repaired area of the axle, carrying out heat preservation for set time so as to heat the area, within the set range from the laser cladding layer to the center of the axle, of the laser cladding layer, and after quenching is completed, tempering the to-be-repaired area of the axle.

Description

technical field [0001] The invention relates to the field of rail transportation, in particular to an axle remanufacturing method, a remanufacturing axle and a system. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] Trains such as high-speed EMUs need to be inspected and maintained every time they run for a certain period or mileage. Among them, the wheel and axle 1 (see figure 1 As shown) scratches are likely to occur at the position of the wheel seat 2 during withdrawal, and the depth of the scratches is relatively long and has a certain depth. When the scratch depth exceeds the maintenance standard (generally 0.1mm), it needs to be scrapped. [0004] Laser cladding remanufacturing technology refers to the use of waste parts with excessive damage as remanufactured blanks, laser cladding technology as a repair method, and laser heating ...

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): C23C24/10C21D1/18C21D10/00
CPCC23C24/10C21D1/18C21D10/005
Inventor 齐先胜肖雪峰李硕郑海霞何晓龙
Owner CRRC QINGDAO SIFANG CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com