Stainless steel welding wire

Abstract

The invention relates to a stainless steel welding wire. The welding wire comprises, by mass, 0.1% or less of C, 0.1-0.3% of Si, 2.0-3.0% of Cu, 1.5-2.5% of Ti, 10-15% of Ni, 15.0-20.0% of Cr, 0.5-0.8% of Mo, 0.01% or less of P, 0.1-0.2% of N, 0.005% or less of S, the balance Fe, and other unavoidable impurity elements. The stainless steel welding wire not only has high impact toughness of tensile strength at the normal temperature, but also has good plastic toughness, and still has high mechanical property at the temperature of 600-700 DGE C, the welding wire is cleaned by an ultrasonic generator, so that the smoothness of the surface of the welding wire is improved, and through a surface oil coating technology, the situation of wire blocking when the welding wire is used is avoided.

Description

technical field [0001] The invention relates to welding materials and techniques, in particular to stainless steel welding wire suitable for welding stainless steel in the fields of boiler energy, hydroelectric power generation, petroleum, chemical industry, shipbuilding and the like. Background technique [0002] Stainless steel welding wire is widely used. The most critical control points in the production process are: the composition of the base material and the cleanliness of the finished product surface. The composition of the base material has been selected and cannot be adjusted in the cold drawing process of the wire drawing factory. Cleanliness control is very important, requiring the surface of the welding wire to be clean, free of impurities and pollution, so as to avoid impurities entering the weld bead to affect the properties of the finished product or cause surface abnormalities. In the production of stainless steel welding wire, the use of lubricating powder a...

AI Technical Summary

Problems solved by technology

[0002] Stainless steel welding wire is widely used. The most critical control points in the production process are: the composition of the base material and the cleanliness of the finished product surface. The composition of the base material has been selected and cannot be adjusted in the cold drawing process of the wire drawing factory. Cleanliness control is very important, requiring the surface of the welding wire to be clean, free of impurities and pollution, so as to avoid impurities entering the weld bead to affect the properties of the finished product or cause surface abnormalities. In the production of stainless steel welding wire, the use of lubricating powder and lubricating oil is inevitable At present, the cleaning of stainless steel welding wire is only rinsed with tap water, so it is impossible to remove the tiny particles and oil stains remaining on the product surface, resulting in low product cleanliness, and the surface of the welding wire has not been oiled, causing customers to block during use. The generation of wire phenomenon, by reducing the content of Ni element and strictly controlling S and P, the thermal cracking resistance of welding wire is improved, and excellent process performance is achieved. In addition, the use of precious metal Ni is very small, which greatly reduces production costs.