Gas shield solid welding wire for high corrosion resistance type weathering resistant steel

Abstract

The invention belongs to the technical field of welding materials, and particularly provides a gas shield solid welding wire for high corrosion resistance type weathering resistant steel. The gas shield solid welding wire comprises, by mass, the following chemical components of 0.01% of C or less, 0.40%-0.60% of Si, 0.5%-1.0% of Mn, 1.25%-1.55% of Cr, 3.0%-4.0% of Ni, 0.17%-0.30% of Cu, 0.02%-0.06% of Ti, 0.002%-0.006% of B, 0.005%-0.015% of S, 0.010% of P or less and the balance iron and inevitable impurities. The chemical components are reasonably designed, and therefore the gas shield solid welding wire has the beneficial effects that corrosion resistance is good, the deposited metal strength is moderate, welding joints are good in low-temperature impact toughness and attractive in forming, small splashing is achieved, and the welding technology is excellent in performance; and meanwhile rich-chlorine gas shield welding is adopted in the solid welding wire, the relative corrosion rate of the solid welding wire is smaller than or equal to 10% by taking an S450EW steel plate as a reference, and the solid welding wire can be suitable for welding of high corrosion resistance type weathering resistant steel plates of the 650MPa level.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and in particular relates to a gas-shielded solid welding wire for high corrosion-resistant weather-resistant steel. Background technique [0002] With the development of microalloying technology and the advancement of metallurgical technology, the development and use of welding materials for atmospheric corrosion-resistant steel has always been in a growing trend. For welding as the main means of connection, the research and development of supporting welding materials Production is becoming more and more urgent and important. With the development of science and technology, steel plates with higher corrosion resistance requirements need higher-level welding wires to match. [0003] At present, with the development of domestic science and technology, on the basis of the existing weather-resistant steel for railway wagons, in order to further improve the corrosion resistance of steel, a ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above existing problems, the present invention provides a gas-shielded solid welding wire for high-corrosion-resistant weather-resistant steel. On the basis of ensuring the corrosion resistance of the weld, the mechanical properties of the weld are stabilized by adjusting the formula design of the chemical composition of the solid welding wire. , and improve the problems of welding process performance defects such as large welding spatter, poor weld formation, and welding wire top plate during welding