Abstract: In recent years, X80 steel has been widely used in pipe transportation projects. At present, the welding methods for X80 steel are mainly manual welding and semi-automatic welding, and the efficiency is comparatively low. This paper mainly introduces the results of research on the principles and technology of X80 steel all-position motorized welding equipment. It elaborates on the process parameters of all-position motorized welding with flux-cored arc welding obtained through multiple tests. The paper also compares and analyzes the physical and chemical properties. This research can provide reference for the implementation of X80 steel all-position motorized welding.

Key words: X80 steel, all-position motorized welding, flux-cored arc welding, process parameters, physicochemical tests