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Welding method for panel assembly of low-frequency tester

A panel assembly and welding method technology, applied in welding equipment, welding equipment, auxiliary welding equipment, etc., can solve the problems of weld surface cracks, low welding qualification rate, large welding deformation, etc., to control welding deformation and eliminate internal stress. , Eliminate the effect of work hardening

Inactive Publication Date: 2017-01-04
GUIZHOU AEROSPACE ELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in the prior art, for the welding of panel components, the welding deformation is large, and surface cracks appear around the weld seam. This is a welding defect that is absolutely not allowed and cannot be remedied. It can only be scrapped, resulting in a low welding pass rate of only 50 %about

Method used

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Embodiment Construction

[0017] The technical solution of the present invention is further described below, but the scope of protection is not limited to the description.

[0018] The invention provides a method for welding a panel assembly of a low-frequency tester, comprising the following steps:

[0019] ①Cleaning: Wash the panel assembly with gasoline, and then dry it naturally;

[0020] ②Heat treatment: Put the panel assembly into an oven at 350-370°C, keep it warm for 3 hours, and then cool it down to room temperature;

[0021] ③Pickling: Pickling the panel components by jet pickling method;

[0022] ④ Welding: Weld the panel components with a welding current of 80-90A;

[0023] ⑤ Milling scars: Preliminary treatment of welding scars on the welding parts of panel components by means of milling;

[0024] ⑥Repairing the scars: finely process the welding scars on the welding parts of the panel components by means of filing.

[0025] In the step ④, the welding wire used for welding is HS311, and...

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Abstract

The invention provides a welding method for a panel assembly of a low-frequency tester. The welding method comprises the following steps of 1, cleaning, wherein the panel assembly is cleaned with gasoline and then naturally aired; 2, thermal treatment, wherein the panel assembly is put into an oven at the temperature of 350-370 DEG C, heat preservation is carried out for 3 h, and the oven is cooled to the room temperature; 3, acid pickling, wherein the panel assembly is subjected to acid pickling with a spray acid pickling method; 4, welding, wherein the panel assembly is welded with the welding current being 80-90 A; 5, mark milling, wherein welding marks at the welding part of the panel assembly are primarily treated in a milling mode; 6, mark trimming and filing, wherein the welding marks at the welding part of the panel assembly are finely treated in a filing mode. According to the welding method, by improving the process, the internal stress generated in the assembly machining process can be effectively eliminated, machining hardening can be eliminated, hardness can be reduced, and plasticity can be improved, so that welding deformation is effectively controlled, the probability of welding cracks is reduced, and the welding percent of pass is improved and reaches 90% or above.

Description

technical field [0001] The invention relates to a welding method for a panel component of a low-frequency tester. Background technique [0002] The low frequency tester panel is used to install the low frequency tester to ensure the stability of the tester without affecting the test operation. The panel components and studs are connected by argon arc welding. [0003] However, in the prior art, for the welding of panel components, the welding deformation is large, and surface cracks appear around the weld seam. This is a welding defect that is absolutely not allowed and cannot be remedied. It can only be scrapped, resulting in a low welding pass rate of only 50 %about. Contents of the invention [0004] In order to solve the above technical problems, the present invention provides a welding method for the panel assembly of the low frequency tester. The welding method for the panel assembly of the low frequency tester can effectively eliminate the internal stress generate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/167B23K9/235B23K37/08
CPCB23K9/167B23K9/235B23K37/08
Inventor 田叶青
Owner GUIZHOU AEROSPACE ELECTRONICS TECH CO LTD
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