Selection of Seamless Tube Welding Method

The selection of seamless tube welding method should be selected according to the material and wall thickness of the seamless pipe. 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, which is especially suitable for thin plate welding, while thick plate welding is not an option; plasma arc is characterized by high arc column temperature and high energy density. , the straightness of the plasma arc is good, its rigidity and flexibility have a wide adjustment range, and it works stably, but it is more complicated to operate; submerged arc welding has the characteristics of high penetration capability and high welding wire deposition efficiency, so the welding speed It can be greatly improved, and the welding cost is low, but the working 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 seamless pipes, a reasonable selection of welding methods is a very important task to ensure welding quality, improve productivity, and reduce costs.

In addition, the same welding method, the type and size of welding current, arc voltage, welding speed, welding materials used, etc., 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. Of course, for the sake of welding quality and efficiency, multiple welding methods can be combined.