EN10217-2 P265GH steel pipe connection mode, metal welding, according to the characteristics of its process is divided into fusion welding, pressure welding and brazing three categories. The fusion welding of EN10217-2 P265GH steel pipe is a method of heating the workpiece interface to the melting state in the welding process and completing the welding without pressure.
During fusion welding, the heat source rapidly heats and melts the interface between the two workpieces to form a molten pool. The molten pool moves forward with the heat source and forms a continuous weld after cooling to connect the two workpieces into a whole.
In the welding process of EN10217-2 P265GH steel pipe, if the atmosphere is in direct contact with the high temperature molten pool, the oxygen in the atmosphere will oxidize metals and various alloy elements. When nitrogen and water vapor in the atmosphere enter into the molten pool, air holes, slag inclusion, cracks and other defects will form in the weld of EN10217-2 P265GH steel pipe during the subsequent cooling process, which will deteriorate the quality and performance of the weld.