Surfacing welding strip with excellent heat fatigue resistance

Abstract

The invention discloses a surfacing welding strip with excellent heat fatigue resistance. The surfacing welding strip is composed of a welding core and two layers of coatings, wherein the first layerof coating is fabricated by the following ingredients of , by weight, 18-26 parts of high carbon ferromanganese, 10-14 parts of carbon ferrochrome, 7-9 parts of magnet, 1-3 parts of hydroxyapatite, 2-5 parts of strontianite and 3-6 parts of aedelforsite, and the second layer of coating is fabricated by the following ingredients of , by weight, 15-20 parts of titanium oxide, 10-13 parts of ferrotitanium, 2-4 parts of silicon nitride, 5-7 parts of molybdenum carbide and 1-3 parts of tungsten disulfide nanotubes. By means of the surfacing welding strip with the excellent heat fatigue resistance,the fabricated welding strip can work in a high-temperature corrosion or high-temperature wear medium for a long time and can maintain excellent cold and heat fatigue resistance and good high-temperature performance of high-temperature oxidation resistance, high-temperature corrosion resistance, high-temperature tempering stability, red hardness and the like, in the working process, electric arc burns stably, arc breaking is not prone to appear, almost no slag is remained on the surface of weld metal, less dust and smoke are generated, and the surfacing welding strip with the excellent heat fatigue resistance has wide applicability.

Description

technical field

[0001] The invention belongs to the technical field of welding rod processing, and in particular relates to a surfacing welding rod with excellent thermal fatigue resistance. 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. Overlay welding has significant economic benefits for improving the service life of parts, rationally using materials, improving product performance and reducing costs. At present, the types of wear-resistant and heat-resistant surfacing materials that have been developed at home and abroad are mainly divided into three types: cobalt-based wear-resistant and heat-resistant surfacing materials, nickel-based wear-resistant and heat-resistant surfacing materials and iron-based wear-resistant and heat-resistant surfacing materials. kind. Among them, cobalt-based wear-resistant and heat-resistant...