High frequency welded pipe typical process: steel strip open reel straightening - head and tail shearing strip welding - casing storage - forming - Welding - cleaning burr - sizing - Scissors - first inspection - pipeline seal treatment - water pressure test - defect detection - printing and coating - finished products.
Welding speed is one of the main parameters in the welding process, which is related to the heating system, the welding deformation rate and the crystallization rate.
In high frequency welded pipe, the welding quality increases with the increase of welding speed. This is because the heating time is shortened to narrow the width of the edge heating zone and shorten the time of forming metal oxides. If the welding speed decreases, the heating zone will widen, and the width of the melted zone will change with the change of input heat Burr. When welding at low speed, less heat input and difficult welding will cause defects if the specified value is not met.
