Welding bead residual stress eliminating device and method

A residual stress and weld bead technology, applied in the field of weld bead residual stress relief devices, can solve the problem of inability to eliminate multiple weld bead stress, and achieve the effects of eliminating residual stress, eliminating high efficiency and improving speed.

Pending Publication Date: 2022-03-01
李军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to make up for the deficiencies in the prior art and solve the problem that the method of ultrasonic impact stress relief can only eliminate the residual stress on a single weld

Method used

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  • Welding bead residual stress eliminating device and method
  • Welding bead residual stress eliminating device and method
  • Welding bead residual stress eliminating device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0040] As an embodiment of the present invention, the pressing unit includes:

[0041] Compression bracket 51, described compression bracket 51 is fixedly installed on the inner wall of described housing 2, on described compression bracket 51, rotating block 54 and slide bar 55 are respectively installed in rotation, and described slide bar 55 and described rotation The lower end of the block 54 is fixedly connected, and a compression rod 56 is slidably installed on the slide bar 55, and a compression block 57 is fixedly installed at the lower end of the compression rod 56, and a resonator 6 is fixedly installed in the compression block 57;

[0042] Cylinder 52, the cylinder 52 is fixedly installed on the inner wall of the housing 2, a push rod 53 is slidably installed in the cylinder 52, and the other end of the push rod 53 is rotatably mounted on the rotating block 54;

[0043] During work, start the cylinder 52, make the push rod 53 move backward, drive the rotating block 5...

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PUM

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Abstract

The invention belongs to the technical field of stress relief, and particularly relates to a weld bead residual stress relief device and method.The weld bead residual stress relief device comprises a supporting column, the supporting column is connected to the upper surface of a base through threads, and the supporting column is used for supporting a to-be-treated welding part; the impact unit is mounted on the base, and the impact unit is in contact with a to-be-treated welding part; the impact unit is used for generating an impact effect on the to-be-treated welding part to complete weld bead stress elimination; the pressing unit is installed on the inner wall of the shell, and the pressing unit is used for limiting movement of the to-be-treated welding part; the device is simple in structure, residual stress in a plurality of welding beads on the same welding piece can be eliminated at the same time, and therefore the situation that the fatigue performance of the welding piece is reduced and the service life is shortened due to the residual stress of the welding beads is avoided.

Description

technical field [0001] The invention belongs to the technical field of stress relief, in particular to a welding bead residual stress relief device and method. Background technique [0002] Residual stress refers to the stress that exists in the structure in the absence of external load. The generation of residual stress comes from the non-uniform permanent deformation of the object, such as heat treatment, surface treatment, rolling, welding, casting, etc., and because in the process of manufacturing or assembly, the material will be subject to local plastic deformation, so almost all structures, There are residual stresses. [0003] The residual stress of welded components is more harmful. On the one hand, the strength of the workpiece will be reduced, causing process defects such as deformation and cracking of the workpiece during manufacturing; on the other hand, the size of the workpiece will change or the Its mechanical properties such as fatigue strength and stress ...

Claims

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Application Information

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IPC IPC(8): C21D7/04C22F1/00
CPCC21D7/04C22F1/00Y02P10/20
Inventor 李军王益
Owner 李军
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