Welding Technology Of Welded Steel Pipe

Progress in the processing of materials has created a unique opportunity for the production of stainless steel tubes. Specifically, manufacturers are required to produce such parts, which must have lighter weight, but must still have anti-corrosion characteristics and meet the strength requirements. In addition, the spatial limitations of the body more emphasis on the importance of formability. Typical applications include exhaust pipes, fuel pipes, fuel injectors and other components.Welded Steel Pipe

Stainless steel pipe, the first forming a flat steel, then make its shape into a round tube. Once formed, the joints of the pipe must be welded together. This weld affects the formability of the part to a large extent. Therefore, it is extremely important to choose the right welding technology to obtain a welded profile that meets the rigorous testing requirements of the manufacturing industry. There is no doubt that tungsten gas arc welding (GTAW), high frequency (HF) welding, and laser welding have been used in the manufacture of stainless steel tubes.Welded Steel Pipe In the production of laser welding in all steel pipe welding applications, the edge of the strip is melted, when the use of clamping bracket to squeeze the edge of the pipe together, the edge of the solidification. However, for laser welding, the unique property is that it has a high energy beam density. The laser beam not only melts the surface of the material, but also produces a keyhole, as well as the weld profile is very narrow.Welded Steel Pipe

In general, it is believed that the laser welding process is faster than the GTAW, they have the same rejection rate, while the former bring better metallographic properties, which brings higher blasting strength and higher formability. When compared to high frequency welding, the laser processing material does not undergo oxidation, which makes the rejection rate lower, higher formability. In the welding of stainless steel pipe plant, the welding depth is determined by the thickness of the steel pipe. In this way, the production goal is to reduce the weld width to improve formability, while achieving higher speed. In choosing the most suitable laser, people can not only consider the beam quality, but also must consider the accuracy of rolling mill. In addition, the pipe mill in the size of the error before the work must first consider the reduction of the spot when the restrictions.Welded Steel Pipe