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DIN17175 12Cr1MoV seamless steel tube high frequency welding technology

2020-07-28 16:48:04

DIN17175 12Cr1MoV seamless steel tube high-frequency welding is based on the principle of electromagnetic induction and the skin effect of ac charge in the conductor, proximity effect and eddy current thermal effect, so that the weld edge of the steel partially heated to the molten state, through the roller extrusion, the butt weld to achieve crystal indirect fusion, so as to achieve the purpose of weld welding.

High-frequency welding is a kind of induction welding (or pressure contact welding), it does not need weld filler, no welding spatter, welding heat affected zone is narrow, welding molding beautiful, good welding mechanical properties, and other advantages, so in DIN17175 12Cr1MoV seamless steel tube production has been widely used.

DIN17175 12Cr1MoV seamless steel tube of high frequency welding is using skin effect and proximity effect of alternating current (ac), steel (strip) after rolling forming, the formation of a cross section of broken circular tube billet, within the tube billet near the center of induction coil rotating one or a set of impedance (magnet) and impedance and pipe opening form a electromagnetic induction loop, under the action of skin effect and proximity effect, the pipe opening edges produce powerful and concentrated heat effect, make the weld edge rapidly heated to required after roller extrusion temperature, welding metal molten state to realize the joint between the crystal,cool to form a firm butt weld.

DIN17175 12Cr1MoV seamless steel tube welding technology needs to grasp and good control in the welding, to ensure that the welded steel tube has no quality and performance problems and quality, play an important role in the use and value.

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