This construction method is to solve the key technology itself due to high thermal conductivity of aluminum, especially in the large thickness of the aluminum bus side without beveling (original facade) caused by factors such as lack Carbon Steel Welding Electrode fusion or fusion welded joints and poor porosity and other defects, using MIG welding method , to ensure the quality of welding process measures.The solution, according to the actual situation of the aluminum busbar joints, repeated welding MIG welding test specimens by metallurgical and mechanical properties of macroscopic (bending) testing and certification, the ultimate summed suitable welding parameters and process measures, successfully guided welding production site to ensure the welding quality and speed of construction,