A corrosion-resistant high-hardness flux-cored welding wire

Abstract

The invention discloses a corrosion-resistant and high-hardness flux-core wire. The corrosion-resistant and high-hardness flux-cored wire is formed by wrapping a flux core with low-carbon cold-rolled steel strip skin, wherein the flux core is prepared from raw materials in parts by weight as follows: 30-50 parts of high-carbon ferrochrome, 20-28 parts of metal chromium, 10-22 parts of barium fluoride, 2-6 parts of calcium carbonate, 0.5-2.5 parts of zircon sand, 5-10 parts of a silicon manganese alloy, 2-8 parts of electrolytic manganese, 2-6 parts of ferro-molybdenum, 6-10 parts of ferro-vanadium, 2-5 parts of nickel powder, 2-7 parts of tungsten powder, 1-4 parts of cobalt powder, 2-9 parts of graphite, 1-4 parts of low-silicon iron, 10-16 parts of an aluminum-magnesium alloy, 2-7 parts of titanium dioxide and 100-200 parts of iron powder. Chemical components are reasonably proportioned, the toughness and the corrosion resistance are good, and the hardness of a welded joint is high.

Description

technical field [0001] The invention relates to the technical field of flux-cored welding wire, in particular to a corrosion-resistant high-hardness flux-cored welding wire. Background technique [0002] Surfacing welding is an economical and fast process for material surface modification, which can effectively change the wear resistance, corrosion resistance and other mechanical properties of the material surface, and is beneficial to improving the service life of parts, rational use of materials, and improvement of product performance. , Cost reduction has a significant effect, and it is more and more widely used in the manufacture and repair of mechanical parts. The welding quality and welding efficiency are determined by the welding material and welding process, especially the welding material is the key to welding, the surfacing material is an important factor affecting the wear resistance of the surfacing alloy, and the production efficiency of the flux-cored wire is h...

AI Technical Summary

Problems solved by technology

[0003] At present, the repair of wear-resistant parts is mainly welded by wear-resistant surfacing welding flux-cored welding wire. At present, the chemical composition ratio of wear-resistant surfacing welding flux-cored welding is unreasonable, and the toughness, welded joint hardness and corrosion resistance are low, so that the surfacing alloy Can not meet the use requirements, resulting in the life of metal components is not high