High-strength welding wire and purpose thereof

Abstract

The invention belongs to the field of welding wires and relates to a high-strength welding wire and the purpose of the high-strength welding wire, in particular to the high-strength welding wires and application of the high-strength welding wires. The high-strength welding wire comprises important alloy elements with shrunk austenite phase fields, and the important alloy elements comprise refined steel microcosmic crystalline grains to achieve a refined crystalline strengthening effect. Therefore, after formed new alloy is used for manufacturing the high-strength welding wire, the strength is significantly improved. Chemical components of the high-strength welding wire has important influences on corrosion resistance of welded seams and shall be similar to chemical components of parent metal, in this way, welded seam metal and the parent metal are similar in chemical component, and the high-strength welding wire is generally supposed to achieve the optimal corrosion resistance. According to the scheme, the parent metal is more suitable for heavy and large-scale special vehicles.

Description

technical field [0001] The invention belongs to the field of welding wire, in particular to high-strength welding wire and its application. 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. Mainly used for welding of heavy and large vehicles, etc. 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 high-strength welding wire for heavy-duty and large-scale special vehicles is being invented. On the basis of welding wire, an appropriate amount of certain ingredients is added, and at the same time, the content of special ingredients is correspondingly increased. However, the change of the alloy composition of the welding wire bri...

AI Technical Summary

Problems solved by technology

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 high-strength welding wire for heavy-duty and large-scale special vehicles is being invented. On the basis of welding wire, add an appropriate amount of certain ingredients, and at the same time increase the content of special ingredients in it accordingly

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.