Smelting process for high-strength welding wire

Abstract

Belonging to the field of welding wire, the invention provides a smelting process for high-strength welding wire, and especially a high strength welding wire and application thereof. The material comprises important metal elements and important alloying elements, and the proportion of the important alloying elements and important metal elements is controlled at a preset value. The steel ingot smelted by the process has more ideal structure, more consistent chemical composition, less impurities, harmful elements and non-metallic inclusions, better consistency of crystal structure, and smaller micro segregation and porosity values, and is more favorable for subsequent forging process.

Description

technical field [0001] The invention belongs to the field of welding wire, in particular to high-strength welding wire and its technology. Background technique [0002] The research of high-strength welding wire is based on ordinary stainless steel welding wire, and the research and development of welding wire products with higher tensile strength and higher tensile strength of deposited metal. It is mainly used for welding of heavy and large vehicles. Since the mechanical properties of ordinary stainless steel welding wire and the mechanical properties of deposited metal cannot meet the increasing welding requirements of high-strength steel, a new type of welding for heavy and large special vehicles is invented. High-strength welding wire, which is based on the existing stainless steel wire with an appropriate amount of certain ingredients, and at the same time correspondingly increases the content of special ingredients. However, the change of the alloy composition of the...

AI Technical Summary

Problems solved by technology

It is mainly used for welding of heavy and large vehicles. Since the mechanical properties of ordinary stainless steel welding wire and the mechanical properties of deposited metal cannot meet the increasing welding requirements of high-strength steel, a new type of welding for heavy and large special vehicles is invented. High-strength welding wire, which is based on the existing stainless steel wire with an appropriate amount of certain ingredients, and at the same time correspondingly increases the content of special ingredients

However, the change of the alloy composition of the welding wire brings certain difficulties to the later production, which reduces the plasticity and toughness of the alloy steel.