Welding bead residual stress eliminating device and method

A residual stress and weld bead technology, applied in the field of residual stress relief devices for weld bead, can solve the problems of high labor intensity and unstable impact pressure of ultrasonic impact, and achieve the effects of low labor intensity, stable impact pressure and good repair effect.

Pending Publication Date: 2019-09-24
大唐锅炉压力容器检验中心有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: the problem of high labor intensity and unstable impact pressure in the prior art

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

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Embodiment Construction

[0041] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0042] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "front", "rear", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

[0043] Such as figure 1 , 2 As shown, a weld bead residual stress relief device includes a magnetic ba...

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Abstract

The invention discloses a welding bead residual stress eliminating device and method. The welding bead residual stress eliminating device comprises a magnetic base, a mechanical arm and an ultrasonic impact head, wherein the ultrasonic impact head is hinged to a first end of a mechanical arm, and a second end of the mechanical arm is hinged to a magnetic seat. The method comprises the following steps of A, aligning the head of the ultrasonic impact head to a to-be-repaired part of a workpiece; B, opening the magnetic seat, and enabling the magnetic seat to be adsorbed nearby the workpiece; C, adjusting the mechanical arm and the ultrasonic impact head to rotate to a position far away from the to-be-repaired position; D, starting cold welding repair equipment, and carrying out welding repair on the workpiece; E, aligning the head of the ultrasonic impact head to the surface of a welding bead of the workpiece after welding repair is completed, enabling the ultrasonic impact head applying pressure to the welding bead, and fixing the mechanical arm and the ultrasonic impact head; and F, starting the ultrasonic impact head so as to enable the ultrasonic impact head carrying out residual stress elimination of the welding bead, and repeating the above steps. The device and the method have the advantages that the labor intensity is low, the impact pressure is stable, and the repairing effect is good.

Description

technical field [0001] The invention relates to the field of welding, in particular to a welding bead residual stress eliminating device and method. Background technique [0002] In the power industry, metal parts often crack and fail due to harsh service environments or their own defects. In order to save replacement costs and maintenance time, welding methods are often used for repairs. Especially some large steel castings, such as cylinders, valves and other components, are prone to crack defects in structural mutation areas such as corners or variable diameter surfaces. Because of their large size and complex structure, post-weld heat treatment cannot be performed, and traditional welding repair methods are difficult. Realized, using the heterogeneous cold repair welding method can realize the repair of defective parts. In order to avoid excessive welding residual stress after welding, most of them currently adopt the method of hammering the weld bead to eliminate the re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D10/00
CPCC21D10/00Y02P10/20
Inventor 刘明星王家庆晏嘉陵王齐宏田旺董少平刘俊建倪满生
Owner 大唐锅炉压力容器检验中心有限公司
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