A gas-shielded surfacing flux-cored wire for hot forging dies

Abstract

The invention discloses a gas shield build-up welding flux-cored wire for a hot-forging die. The gas shield build-up welding flux-cored wire comprises a steel strip welding wire skin and a flux core, wherein the steel strip welding wire skin comprises, by mass, 0.01-0.04% of C, 0.19-0.26% of Mn, not greater than 0.03% of Si, not greater than 0.010% of S, not greater than 0.015% of P, 0.010-0.045% of Als, not greater than 0.003% of Ca, not greater than 0.005% of N and the balance being Fe and unavoidable impurities; flux core powder comprises, by mass, 10-20% of TiO2, 2-7% of SiO2, 2-7% of ZrO2, 2-6% of NaF, 8-15% of ferromanganese, 2-6% of ferrosilicon, 4-8% of metallic nickel, 8-14% of metallic chromium, 10-16% of ferrochrome, 8-15% of ferro-molybdenum, 8-13% of metallic tungsten, 1-4% of ferrovanadium, 2-7% of metallic cobalt and the balance being iron powder. The gas shield build-up welding flux-cored wire can meet the requirement of the hot-forging die for build-up welding and also has a good welding processing property. Weld metal has high hardness and relatively good toughness.

Description

technical field [0001] The invention belongs to the field of welding materials, in particular to a gas-shielded surfacing flux-cored welding wire for a hot forging die. Background technique [0002] With the development of manufacturing technology, especially the rapid development of the automobile industry, higher requirements are put forward for the supporting industries. Hot forging abrasives are widely used in the production and manufacture of auto parts. The service life of abrasives is related to the yield of products and the efficiency of production. The use of mold repair can undoubtedly greatly reduce the cost of use, improve the service life of abrasive tools, and reduce the waste of resources. The main way to repair the abrasive tool is to carry out surfacing welding, and then reopen the cavity, so as to realize the recycling of the mold, which is the most economical way to use the abrasive tool at present, and the service life of the mold after repair is the sam...

AI Technical Summary

Problems solved by technology

At present, the flux-cored welding wire for hot forging dies on the market can only meet the basic needs, the service life is often short, and the welding process performance is average. This requires a welding wire that can significantly increase the service life of the die, thereby improving labor production efficiency and saving costs. Reduce labor intensity of workers

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