High Frequency Straight Seam Welded Pipe Welding Speed

High frequency straight seam welded steel pipe typical process: open-book - strip leveling - head and tail shear - strip butt welding - looper storage - forming - welding - clear burr - sizing - testing - flying cut - straight - pipe processing - hydrostatic test - flaw detection - printing and coating - finished product.

Welding speed is one of the main parameters of the welding process, which with the heating system, the weld deformation rate and the crystallization rate of each other.

In the high frequency straight seam welded pipe, welding quality progress along with the speed up of welding speed. This is because the heating time is shortened to narrow the width of the edge heating zone, shortening the time to form the metal oxide, if the welding speed decreases, not only the heating zone is widened, and the melting zone width changes with the input heat change, Burr large. In the low-speed welding, the input heat to make welding less difficult, if not meet the specified value is easy to produce defects of structural steel pipe.