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Method for laser surface hardening treatment of local end surface of thin-wall piece by workpiece clamping

A technology of hardening treatment and laser heat treatment, which is applied in the field of laser surface hardening treatment, can solve the problems of scrapped parts, damage to the flatness of the end surface of the workpiece, failure to meet the hardness requirements, etc., and achieve the effect of simple structure and convenient operation

Active Publication Date: 2009-01-28
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because laser quenching is generally the last process of parts processing, the damage to the flatness of the end surface of the workpiece will directly lead to the scrapping of the workpiece such as image 3 shown
Although high-frequency heat treatment can be used for local surface hardening treatment of parts, when treating the end faces of thin-walled parts, it is easy to cause local overburning, deformation or failure to meet the hardness requirements, resulting in the scrapping of parts

Method used

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  • Method for laser surface hardening treatment of local end surface of thin-wall piece by workpiece clamping
  • Method for laser surface hardening treatment of local end surface of thin-wall piece by workpiece clamping
  • Method for laser surface hardening treatment of local end surface of thin-wall piece by workpiece clamping

Examples

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Effect test

Embodiment 1

[0014] Embodiment 1: Blocks in the synchronization ring of the gearbox, such as figure 1 At A, the width is 14mm, the thickness is 3mm, and the end faces on the left and right sides of the block need to be hardened. Its specific technological process is as follows:

[0015] 1. First, make two rectangular splints with the same shape. One end face of the long side of the two splints is processed into a profiling surface that is close to the shape of the block in the synchronous ring of the gearbox, and the length of the splint is greater than the end face of the block in the synchronous ring of the gearbox. The long side is 25mm, and there are 1 to 2 through holes in the vertical direction of the splint surface on both sides of the splint, which correspond to each other and are larger than Φ3mm, which is convenient for passing through the bolts and clamping the workpiece; the splint width is 10mm, and the splint thickness is: 2mm, the splint is 0.5mm higher than the end face of...

Embodiment 2

[0020] Embodiment 2: Blocks in the synchronization ring of the gearbox, such as figure 1 At A, the width is 14mm, the thickness is 3mm, and the end faces on the left and right sides of the block need to be hardened. Its specific technological process is as follows:

[0021] 1. First, make two rectangular splints with the same shape. One end face of the long side of the two splints is processed into a profiling surface that is close to the shape of the block in the synchronous ring of the gearbox, and the length of the splint is greater than the end face of the block in the synchronous ring of the gearbox. The long side is 25mm, and there are 1 to 2 through holes in the vertical direction of the splint surface on both sides of the extended part of the splint, which correspond to each other and are larger than Φ3mm, which is convenient for passing through the bolts and clamping the workpiece; the width of the splint is 11mm, and the thickness of the splint is: 7mm, the splint i...

Embodiment 3

[0026] Embodiment 3: ultra-thin model tool

[0027] 1. First make two rectangular splints with the same shape. One end face of the long side of the two splints is processed into a profiling surface close to the shape of the ultra-thin sample tool, and the length of the splint is 25mm longer than the long side of the ultra-thin sample tool end. The length of the splint There are 1 to 2 through holes in the direction vertical to the surface of the splint on both sides of the outlet part, which correspond to each other and are larger than Φ3mm, which is convenient for passing through the bolts and clamping the workpiece; the width of the splint is 10mm, the thickness of the splint is 7mm, and the splint is thinner than The end face height of the model tool: 0.2mm.

[0028] 2. Next, place a piece of plywood on both sides of the large surface of the ultra-thin sample tool. The respective profiling end faces of the two splints should be parallel to the end face of the ultra-thin sam...

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Abstract

The invention relates to a method of surface treatment of hardness with laser to thin wall piece part by workpiece holding. Put workpiece chucking with fish, fix two fishes with bolt, smear one layer light absorbed paint on the cross section and air dry, scan and heat the workpiece wall central line holded by changing workpiece and fish, keep light beam focus alwayson the wall and light axes being vertical with workpiece wall.It is simple structure, handling convenient It is able to make workpiece reatment of hardness layer with same depth and with smooth surface.

Description

Technical field: [0001] The invention relates to a method for locally performing laser surface hardening treatment on the end face of a thin-walled part, in particular to a method for performing laser surface hardening treatment on a part of the end face of a thin-walled part by a workpiece clamping method. Used in the processing field of auto parts. Background technique: [0002] According to the requirements of working and service conditions, the end faces of thin-walled auto parts with a thickness less than 4mm often require local surface hardening treatment, such as figure 1 Due to the small deformation of the laser surface treatment and the precise control of the treatment area, the inner block of the synchronous ring of the gearbox is more suitable for processing the end faces of the above parts. The laser treated hardened layer is seen as a "crescent" along the cross section of the hardened zone, that is, the middle of the hardened zone is the deepest, while the two ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/09
Inventor 姚远郑培和魏伟喻浩淳陈明孔德举秦芳
Owner CHINA FIRST AUTOMOBILE
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