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Argon-arc welding-brazing composite welding method

A technology of composite welding and welding method, applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of poor comprehensive quality of welded joints, and achieve the effect of excellent comprehensive performance and broad industrial application value.

Inactive Publication Date: 2018-06-15
XUZHOU VOCATIONAL COLLEGE OF BIOENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an argon arc welding-brazing composite welding method, which can well solve the defect of poor overall quality of welded joints in the welding process of magnesium alloy and red copper

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of argon arc welding-brazing composite welding method, described composite welding is to weld the magnesium alloy plate to be welded through the Mg-Nb intermediate layer and the red copper plate, and the specific steps are as follows:

[0025] (1) Take the magnesium alloy plate to be welded with a mesh structure, first remove the oil stain on the surface of the plate to be welded with acetone, and then mechanically polish the plate to be welded with sandpaper to expose the metallic luster on both sides;

[0026] (2) First perform spot welding positioning on the platform, and then use magnesium alloy welding wire to perform argon arc welding on the magnesium alloy plate to be welded and the Mg-Nb intermediate layer. The welding voltage is 20V, and the welding process is performed in argon gas with a purity of 99.9%. It is carried out under protection; after that, the welded joints are quenched, and the quenched welded joints are placed in a cryogenic treatment devi...

Embodiment 2

[0029] A kind of argon arc welding-brazing composite welding method, described composite welding is to weld the magnesium alloy plate to be welded through the Mg-Nb intermediate layer and the red copper plate, and the specific steps are as follows:

[0030] (1) Take the magnesium alloy plate to be welded with a mesh structure, first remove the oil stain on the surface of the plate to be welded with acetone, and then mechanically polish the plate to be welded with sandpaper to expose the metallic luster on both sides;

[0031] (2) First perform spot welding positioning on the platform, and then use magnesium alloy welding wire to perform argon arc welding on the magnesium alloy plate to be welded and the Mg-Nb intermediate layer. The welding voltage is 25V, and the welding process is performed in argon gas with a purity of 99.9%. Under protection; after that, the welded joints are quenched, and the quenched welded joints are placed in a cryogenic treatment device, and the temper...

Embodiment 3

[0034] A kind of argon arc welding-brazing composite welding method, described composite welding is to weld the magnesium alloy plate to be welded through the Mg-Nb intermediate layer and the red copper plate, and the specific steps are as follows:

[0035] (1) Take the magnesium alloy plate to be welded with a mesh structure, first remove the oil stain on the surface of the plate to be welded with acetone, and then mechanically polish the plate to be welded with sandpaper to expose the metallic luster on both sides;

[0036] (2) First perform spot welding positioning on the platform, and then use magnesium alloy welding wire to perform argon arc welding on the magnesium alloy plate to be welded and the Mg-Nb intermediate layer. The welding voltage is 20V, and the welding process is performed in argon gas with a purity of 99.9%. It is carried out under protection; after that, the welded joints are quenched, and the quenched welded joints are placed in a cryogenic treatment devi...

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PUM

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Abstract

The invention provides an argon-arc welding-brazing composite welding method. The argon-arc welding-brazing composite welding method is characterized in that welding for a to-be-welded magnesium alloyplate and a copper plate is realized by adopting a Mg-Nb intermediate layer, so that relatively great stress in a joint and deformation, which are caused by direct welding two kinds of parent metal,are avoided, and the problem that strength of the joint is affected and toughness of the joint is not good as the two kinds of parent metal are in direct contact to easily form an intermediate compound is solved, and therefore, an obtained welded part is excellent in comprehensive performance. An argon-arc welding-brazing composite welding mode is adopted to overcome the defects of independently adopting argon-arc welding or brazing, so that the argon-arc welding-brazing composite welding method has a very good effect, and a wide industrial application value.

Description

technical field [0001] The invention belongs to the technical field of welding, and in particular relates to an argon arc welding-brazing composite welding method. Background technique [0002] Materials are the material basis for the survival and development of human beings, the conquest of nature and the transformation of nature. They are also the forerunner of the development of human society, especially the development of modern high technology, which depends on the progress of new material technology. The research and development of new material structures is an important pillar to improve the level of industrial technology. If there is no development of modern superstructure materials, there will be no progress in the aerospace industry in the world today. Non-ferrous metal materials are the most important class of materials, such as magnesium and aluminum. Among them, magnesium is rich in reserves. Compared with other commonly used metals, magnesium has the advantage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K28/02
CPCB23K28/02
Inventor 张春红张宁张信永师彩云张欣王世敏
Owner XUZHOU VOCATIONAL COLLEGE OF BIOENG
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