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ONLINE WELDED PIPE SEAM ANNEALING M.F EQUIPMENT

The 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 ......

Solid State High Frequency Contact Pipe Welder

Straight seam pipes contact welding : Usually, induction welding is used in the straight seam pipes production, which put the copper inductor on the needed welding open seam pipes.by using the electromagnetic induction principle,a strong high frequency current surrounding the steel tube is induced i......

SELECTION OF POWER AND FREQUENCY OF HIGH-FREQUENCY WELDER

High-frequency welders have many models. One layer 50 KW for low-power welder,one layer 100KW for medium-power welder,one layer 200KW or 300KW for high-power welder.

SERIES TYPE SOLID STATE HIGH FREQUENCY WELDER

The thyristor rectifier voltage regulation technology is adopted, and there is no input transformer. The inverter bridge adopts high-voltage MOS, and the tank circuit adopts a series resonant structure.

SOLID-STATE HIGH-FREQUENCY POWER SUPPLY CLASSIFICATION

Like vacuum tube high frequency, although the basic principles are similar.solid state high frequency can also be classified into various types according to different requirements such as usage, components, power and frequency.

Solid state high frequency welder technology and working principle

20 years ago, high-frequency power sources (commonly known as "high-frequency furnaces") used for welding pipes and heat treatment in China were mainly equipment with electronic tubes (also known as "vacuum tubes") as the main inverter components. The basic principle is shown in the following figure......

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