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Preparation method of magnesium alloy welding wire

A magnesium alloy, multi-strand stranded welding wire technology, applied in welding equipment, metal processing equipment, welding medium and other directions, can solve the problems of difficulty in extrusion of welding wire, disadvantageous production of small diameter welding wire, low production efficiency, etc. The effect of reducing surface treatment links, excellent joint quality and high yield

Inactive Publication Date: 2020-12-18
HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

Aiming at the problems that when the diameter of the welding wire is small, it is difficult to extrude the welding wire, the production efficiency of the drawing method is low, the energy consumption is high, and it is not conducive to the production of small-diameter welding wires, the invention provides a vacuum stripping machine and a stranding machine, Preparation of Stranded Welding Wire for Magnesium Alloy

Method used

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Embodiment Construction

[0019] Table 1 Properties of welding joints of magnesium alloy welding wire argon tungsten arc welding

[0020] A preparation method of a magnesium alloy welding wire, the weight percentage of the chemical composition in the welding wire is: Al: 8.5% to 9.5%, Zn: 0.55% to 0.9%, Mn: 0.17% to 0.4%, and the balance is Mg, which is characterized in that the preparation Proceed as follows:

[0021] ①. Material preparation: put Al, Zn, Mn and Mg pure metals or alloys containing two elements in ultrasonic cleaning equipment, clean them with alcohol solution, and then dry them. Use an electronic balance to weigh the dried raw materials by weight percentage. Heavy standby;

[0022] ②Smelting: Put all the raw materials with good ratio in ① into the graphite crucible of the vacuum induction melting furnace in order of melting point from low to high. The metal with the lowest melting point is placed at the bottom of the crucible, and the metal with the highest melting point is placed at ...

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Abstract

The invention discloses a preparation method of a magnesium alloy welding wire, and belongs to the technical field of welding. The method includes the following steps that a mother alloy cast ingot isheated and melted through an induction coil under protection of high-purity argon, then liquid metal is sprayed to the surface of a copper roller rotating at a high speed, a welding wire is obtainedafter the liquid metal is rapidly cooled, and the multi-strand stranded magnesium alloy welding wire is obtained after stranding. The welding wire produced with the method has the stirring effect on molten pool metal, the electric arc is stable, the components are consistent with those of base metal, the welding wire has the good surface quality, the surface is free of cracks, and the strength ofa post-welding joint is high.

Description

technical field [0001] The invention relates to a preparation method of magnesium alloy welding wire. Background technique [0002] Magnesium alloys are the lightest metal structural materials. In the context of lightweight materials, magnesium alloys are widely used in transportation, electronics, aerospace and other fields. Such a wide range of applications raises the bar for the performance and welding technology of magnesium alloy welded structural parts. higher requirement. At present, the performance of welding materials is the key to affecting the overall component, while the welding process and the composition and performance of welding wire determine the performance of welded structural parts. Therefore, improving the performance of magnesium alloy welding materials is of great significance to the wide application of magnesium alloy welding structural parts. [0003] Magnesium alloy has fast heat conduction and large thermal expansion coefficient, which is easy to...

Claims

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Application Information

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IPC IPC(8): B23K35/28B23K35/40
CPCB23K35/284B23K35/40
Inventor 陈永生孙晓梅方乃文吕晓春王永东
Owner HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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