Selection of Seamless Steel Tube Welding Method

 　　The welding method of seamless steel tube should be selected according to the material and wall thickness of the seamless tube. Because different welding methods have different arc heat and arc force, different welding methods have different characteristics.

　　For example: Tungsten arc welding is characterized by low current density, stable arc combustion, and good weld formation. It is especially suitable for thin plate welding, but thick plate welding is not an option; plasma arc is characterized by high arc column temperature and high energy density , Plasma arc has good straightness, its rigidity and flexibility have a wide adjustment range, and work is stable, but the operation is more complicated; submerged arc welding has the characteristics of penetration ability and high welding wire deposition efficiency, so the welding speed It can be greatly improved, the welding cost is lower, but the labor conditions and environment are relatively poor. It can be seen that different welding methods have different capabilities and different operating costs. According to the material and wall thickness of the seamless pipe, a reasonable selection of the welding method is a very important task to ensure welding quality, improve productivity, and reduce costs.

　　In addition, it is the same welding method, the type and size of welding current, arc voltage, welding speed, welding materials used, etc., all have a greater impact on arc heat and arc force. Therefore, different welding methods can only be applied to welding of different materials and different thicknesses.

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