Standing at a desk piled high with test reports, Wang Jianjun opened a yellowed notebook, which contained the parameters of the first-generation high-frequency welded pipe machine that he had recorded twenty years ago. At that time, we couldn't even afford temperature sensors. We had to rely on the ......
Read MoreSolid-state high-frequency welding machine is a device that uses solid-state electronic devices (such as MOSFET, IGBT, etc.) to replace traditional electron tubes for high-frequency induction heating. It is widely used in the welding of metal pipes, especially in steel pipe production lines. Compare......
Read MoreThe welded seam reheating treatment of the straight seam pipe is an effective methods to improve the quality of the welding quality, and the welded seam is heated to more than 800 ° C, and then naturally cooled (annealed) or forced cooling (normalizing) with a fan, which can effectively improve the ......
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