Wear-resistant impact-resistant self-protected surfacing-welding flux-cored wire

Abstract

The invention relates to a wear-resistant impact-resistant self-protected surfacing-welding flux-cored wire, which belongs to the welding field in material-processing engineering and is mainly applied to restoring mechanical parts, such as forklift hopper teeth, crusher hammerheads, dredger vanes, rock-drill drilling teeth and the like, resisting the strong impacts and abrasion of rocks, mud and sand, minerals and the like through surfacing welding. The wear-resistant impact-resistant self-protected surfacing-welding flux-cored wire is characterized in that the mass-percentage content ranges of flux-cored components are as follows: 10-50 percent of chromium carbide, 1-4 percent of metal manganese, 1-4 percent of low-silicon ferrosilicon, 8-14 percent of ferromolybdenum, 25-35 percent of ferrovanadium, 2-6 percent of ferrotitanium, 5-8 percent of ferroniobium, 2-5 percent of sodium fluorosilicate, 3-6 percent of rutile, 2-5 percent of zirconite and 1-3 percent of sodium fluoride. The problem to be solved by the invention is to provide the self-protected surfacing-welding flux-cored wire which can resist four-stage wind-power welding and can suffer from serious impacts and strong abrasion, thereby the service lives of mine-machinery components and parts are greatly prolonged.

Description

technical field [0001] It belongs to the field of welding in material processing engineering. This invention is mainly used for surfacing welding to repair mechanical parts that are resistant to strong impact and wear of rocks, sand, and mineral materials, such as forklift bucket teeth, crusher hammers, and dredger blades. , Rock drilling machine chisel and so on. Background technique [0002] Mining machinery parts, such as excavator bucket teeth, jaw plates, crusher hammers, dredger blades, etc., not only suffer severe impacts, but also undergo strong wear and tear during the working process, so their lifespan is short and they need to be replaced frequently. Increased costs. The use of surfacing welding to repair failed parts can save a large part of the cost because the repair cost only accounts for one-third of the replacement of new parts. Therefore, this repair technology is widely used in the field of engineering construction. At present, there are major defects in...

AI Technical Summary

Problems solved by technology

In terms of surfacing welding methods, welding rods and gas-shielded welding wires are mainly used for surfacing welding. Due to the low utilization rate of welding rods, not only the repair efficiency is low, but also the cost is increased; most of the repairs of mining machinery parts are field repairs on site. level, gas shielded welding cannot be performed normally

In terms of surfacing materials, most of the high manganese steel materials in the market are used for surfacing repairs. High manganese steel materials have good work hardening properties and can resist severe impacts. However, under conditions of strong wear and tear, the will fail quickly

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