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What are the requirements for the welding process of straight seam welded pipe?
2018-10-26 14:53:20

The outer surface of the welded pipe is smooth, high precision, low in cost and low in weld height, which is beneficial to the coating of 3PE anti-corrosion coating. The welding method of high-frequency welded steel pipe and submerged arc welded pipe is significantly different. Since the welding is completed instantaneously at high speed, the difficulty in ensuring the welding quality is much higher than that in the submerged arc welding method. What are the welding points of welded pipes? Is it mature?

The high-frequency welding equipment is an electrical-mechanical system for welding the welded pipe. The high-frequency welding equipment is composed of a high-frequency welding machine and a welded pipe forming machine. The high-frequency welding machine generally consists of two parts: a high-frequency generator and a feeding device. Its function is to generate high-frequency current and control it. The forming machine is composed of a squeeze roller frame, and its function is to be a high-frequency current. The molten portion is extruded to remove the oxide layer and impurities on the surface of the steel sheet, so that the steel sheet is completely melted into one body. What are the welding points of welded pipes? Is it mature?

Straight seam welded pipe is the welded pipe with the welding gap and the longitudinal direction of the welded pipe. It not only has high production efficiency, but also has low cost. It is a cost-effective straight seam welded pipe. When welding the straight seam welded pipe, What are the requirements for the use of the process? The Chinese welded pipe network will tell the friends that when welding the straight seam welded pipe, not only the weld size but also the welding temperature should be controlled. The welding temperature is mainly affected by the high-frequency eddy current heat power. When the input heat is insufficient, there is no way to reach the welding temperature at the edge of the heated weld. The metal structure will remain solid and not melted. When the input heat is insufficient, The edge of the heated weld will exceed the welding temperature, causing over-burning or dripping, which will cause the weld to form a melt hole. The winding machine agent said that when welding the straight-welded welded pipe, not only the pressing force but also the The position of the high frequency induction coil is regulated, so as to ensure the welding quality of the straight seam welded pipe.

 


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