Wear-resisting and high-hardness flux core wire

Abstract

The invention discloses a wear-resisting and high-hardness flux core wire. The wear-resisting and high-hardness flux core wire is composed of a flux core and a low-carbon cold-rolling steel tape sheath wrapped on the outer side of the flux core. The flux core comprises, by weight, 20-25 parts of low-carbon ferrochromium, 1.5-3 parts of titanium powder, 1-2 parts of nickel powder, 5-8 parts of calcium-silicon alloys, 2-4 parts of magnesium-aluminum alloys, 3-5 parts of electrolytic manganese, 1-2 parts of ferromolybdenum, 2.5-4 parts of ferroniobium, 1-2 parts of ferrovanadium, 3-5 parts of rare earth iron alloys, 3-5 parts of carbonate, 3-4 parts of graphite, 120-150 parts of iron powder, 0.5-1.5 parts of tungsten powder and 2-4 parts of calcium fluoride. The wear-resisting and high-hardness flux core wire has good welding performance, deposited metal tissue is compact, air holes and cracks are avoided, combination with base metal is good, performance is stable, and deposited metal has good wear resistance, corrosion resistance, high hardness and other performance.

Description

technical field [0001] The invention relates to the technical field of welding wires, in particular to a wear-resistant and high-hardness flux-cored welding wire. Background technique [0002] As a common metal welding material, flux-cored welding wire is widely used in aerospace, automobile manufacturing, construction, bridge, petrochemical and other fields. The quality of welding and the level of welding efficiency are determined by the welding material and welding process, especially the welding material is the key to welding. At present, the composition of the flux-cored welding wire is still unreasonable, resulting in small pores and cracks in the deposited metal. At the same time, there is still room for improvement in wear resistance, corrosion resistance and hardness. SUMMARY OF THE INVENTION [0003] Based on the technical problems existing in the background technology, the present invention proposes a wear-resistant and high-hardness flux-cored welding wire, whi...

AI Technical Summary

Problems solved by technology

The welding quality and welding efficiency are determined by the welding material and welding process, especially the welding material is the key to welding. At present, the composition of the flux-cored welding wire is unreasonable, resulting in small pores and cracks in the deposited metal. At the same time, it needs to be improved in terms of wear resistance, corrosion resistance and hardness.