Mixed active agent for activing flux tungsten inert gas arc welding of magnesium alloy

A technology of argon tungsten arc welding and activator, which is applied in arc welding equipment, welding equipment, welding medium, etc., can solve the problems of increasing melting depth, grain coarsening, adverse effects on the structure and performance of welded joints, etc. The effect of weld penetration and weld grain refinement
CN108032002AInactive Publication Date: 2018-05-15CHONGQING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING UNIV
Publication Date
2018-05-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

Provided is a mixed active agent for activing flux tungsten inert gas arc welding of a magnesium alloy. A method comprises the following steps that (1), the mixed active agent is formed by mixing MnCl2 with ZnO, wherein the mixed active agent comprises, by weight percentage, 65%-75% of MnCl2 and 25%-35% of ZnO; (2), according to a use method of the active agent, MnCl2 and ZnO active agent powder is fully ground, after even mixing, an appropriate amount of acetone is evenly added, and the mixture is made into a paste; (3), the upper surface of a sample is evenly coated with the pasty active agent with a flat hairbrush, the coating width is about 40 mm, and the average coating amount of the active agent is 6 mg.cm<-2>; (4), TIG is conducted after acetone is volatilized; and (5), after welding is completed, the morphology and the microstructure of a welding joint and a molten bath are observed, and representation of the mechanical property is conducted.
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Description

technical field

[0001] The invention belongs to the field of material processing, and in particular relates to a mixed active agent which can not only improve the penetration depth of magnesium alloy tungsten argon arc welding joints, but also refine the grain structure, improve the welding quality and increase the tensile performance of the joints. Background technique

[0002] Magnesium and its alloys have attracted increasing attention due to their low specific gravity, good processing performance, and abundant natural reserves. Compared with other metal materials and engineering plastics, magnesium alloy has higher specific strength and specific stiffness, excellent damping and shock absorption, electromagnetic shielding, machinability and casting performance, and will become an important commercial lightweight in the 21st century. Structural materials. As a main joining method, welding will play a vital role in its technological innovation and wide industrial applicati...

Claims

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