High-temperature high-pressure stainless steel pipeline welding metal material, technology and product

The invention provides a high-temperature high-pressure stainless steel pipeline welding metal material, technology and product. The content of ferrite in a welding line is reduced, the proportion ofthe ferrite left in the welding line is reduced to be smaller than or equal to 3.0%, and the high-temperature strength and creeping deformation resisting performance of a welding connector are improved. During welding, a stainless steel twisted welding wire is adopted and subjected to wire drawing and stranding into a disc with the length larger than 100 m, and an automatic wire feeding mechanismis utilized for semiautomatic and automatic welding; and in the welding process, synchronous vibration is conducted, liquid metal in the welding process reaches the non-stress or low-stress solidification state at the solidification moment, and accordingly, the welding residual stress is eliminated and reduced. By means of the high-temperature high-pressure stainless steel pipeline welding metal material, technology and pr