The high-frequency pipe welding machine regulations are related processes formulated in industrial production to ensure product quality, improve labor productivity, reduce various consumption, ensure personal and equipment safety, and prevent various technical operation accidents, product quality accidents and equipment accidents. A series of rules and regulations for operation, safety, and equipment maintenance; it is scientific, complete, advanced, reliable, and specific; it is the summary and improvement of production practice experience, is the generalization of production rules, and is a modern industry Guiding documents for the operation of production posts. The regulations mainly include process technical regulations, technical operation regulations, safety technical regulations and equipment maintenance regulations. Each position has these four rules. In addition, there are new product trial production specifications for new product trial production, and temporary technical operation specifications for new equipment testing or operation. The regulations are formulated and issued by the manufacturer's technical department. The content and details of the regulations are also different for each factory according to its own specific situation.
Welded pipes cooperate with cold drawing and cold rolling to achieve continuous production, and good results have also been achieved. The United States is also equipped with a cold expansion machine in a 406 mm longitudinal welded pipe unit to increase the strength of the finished pipe (about 25%), and at the same time improve the pipe section shape and dimensional accuracy. Non-metallic inclusions are strip-shaped oxides, sulfides, and brittle and plastic silicates in the metal matrix, which are due to the impure steel containing more impurities. When the steel ingot segregation is serious, the non-metallic inclusions in the segregated part are also more serious.
There are two different forming methods for high-frequency pipe welding machines: "welding first, then forming", that is, first welding into a circular tube, and then into a special-shaped tube. Such as machine, rectangular tube, oval, steel window tube, etc. The advantage of this method is that in the production of several steel pipes, when the strip size is allowed to be uniform, only a set of rolls are needed to weld the round pipes, and then different cross-sections are obtained on the frame with a fixed diameter.
