Stainless heat-proof self-protecting flux-cored wire for magnesium smelting reduction tank

The technology of flux-cored welding wire and reduction tank is applied in the field of magnesium smelting reduction tank welding and stainless heat-resistant self-protected flux-cored welding wire, which can solve the problems that restrict the application of magnesium smelting reduction tank, the high price of magnesium smelting reduction tank, and the welding quality. problems, etc., to achieve the effect of improving the quality of welded joints, strong welding flexibility, and difficult grain growth
CN104259690AActive Publication Date: 2015-01-07BEIJING UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING UNIV OF TECH
Publication Date
2015-01-07

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Abstract

A stainless heat-proof self-protecting flux-cored wire for a magnesium smelting reduction tank belongs to the technical field of materials processing engineering. A normal stainless steel band 304L or common carbon steel serves as a coating layer, and alloys in a powder core are rutile, sodium carbonate, feldspar, compound fluorides, chromium, nickel, manganese, molybdenum, chromium nitride, aluminium-magnesium alloy, misch metal and iron power. Compared with a conventional stainless steel welding rod, the stainless heat-proof self-protecting flux-cored wire has the advantages that higher welding current can be used; higher welding speed can be realized; the production efficiency is improved; and the labor intensity is lowered; c. Compared with a conventional stainless steel submerged-arc welding solid wire, the stainless heat-proof self-protecting flux-cored wire has the advantages that all-position welding can be realized; the heat input is small; the slag detachability is good; and the manufacturing technique is simpler. A welded joint formed by using the stainless heat-proof self-protecting flux-cored wire provided by the invention has favorable heat resistance, oxidation resistance, vulcanization and corrosion resistance and high-temperature creep resistance compared with welded joints formed by welding the stainless steel welding rod and the stainless steel solid wire.
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Description

technical field

[0001] The invention belongs to the technical field of material processing engineering, and relates to a stainless heat-resistant self-protecting flux-cored welding wire, which is mainly used for welding reduction tanks for magnesium smelting. technical background

[0002] Magnesium and magnesium alloys are currently the lightest structural materials in industrial applications. They have high specific strength, specific stiffness and good processing performance. In addition, they also have good thermal conductivity and electrical conductivity, damping and shock absorption, and electromagnetic shielding. Good and other characteristics, magnesium alloy is easy to process and shape, more importantly, it is easy to recycle and easy to degrade, so it is a very valuable green structural material. These characteristics of magnesium alloy make it widely used in electronic appliances, aerospace, national defense industry, automobile and other fields.

[0003] At pres...

Claims

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