Surfacing rod

Abstract

The invention discloses a surfacing rod. The surfacing rod comprises, by weight, 20-30 parts of chromium, 3-5 parts of silicon, 2-8 parts of manganese, 5-10 parts of carbon, 0.5-1 part of vanadium, 1-2 parts of boron, 3-5 parts of ferrotitanium, 5-10 parts of fluorite, 10-20 parts of titanium dioxide, and 10-20 parts of rutile. Cobalt serves as base material, so that surfacing metal can be well resistant to wearing and corrosion when operating at the temperature about 650 DEG C; the surfacing rod has good performance of welding and has the advantages that electric arcs are stable, arc light is soft, sputtering rarely occurs, slag detachability is good, and formed welds are good in appearance and welding performance.

Description

technical field [0001] The invention belongs to the field of welding materials, in particular to a welding rod, in particular to a surfacing welding rod. Background technique [0002] Overlay welding is a welding process that deposits a layer of wear-resistant, corrosion-resistant, heat-resistant metal layers on the surface or edge of the workpiece. Surfacing welding can improve the service life of parts, use materials reasonably, improve product performance and reduce costs, and has significant economic benefits. In industrial production, welding technology such as surfacing welding is developing rapidly. Surfacing welding materials are divided into three categories: manual welding rods, welding wires, and strip welding strips. Among the hardfacing surfacing materials in my country, surfacing electrodes account for about 70%, surfacing welding wire accounts for about 25%, and welding strips account for about 5%. It can be seen that the surfacing electrode plays an importa...

AI Technical Summary

Problems solved by technology

[0003] The existing surfacing welding electrodes mainly achieve the required hardness by adding tungsten carbide particles or increasing the carbon content, which has a problem, that is, the wear resistance and corrosion resistance of the cladding layer are prone to decline under high temperature conditions. , so that the friction and impact parts are damaged, and the machine cannot be used