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Series solid state high frequency induction welder - HF induction heating device - Baoding City Sanfeng Electrial Equipment Co.,Ltd
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HF induction heating device

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Series solid state high frequency induction welder

Series solid state high frequency induction welder

      Series solid state high frequency welder with new technology has been developed successfully through the unremitting efforts of the R & D personnel of Sanfeng Electrical Co., Ltd. .The reliability and technical specification of welded pipe have been verified. It has entered the mass production stage and to the market.

    Power:100-1800KW

    Pipe wall thickness:0.6-18mm

    Typical welding speed:20-130m/min

    Welding methods:Induction weldingContact welding if more than 400kW

    Application Scope:The welding of steel tube, stainless steel tube, aluminum tube, copper tube, H-beam and special section tube.


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Main circuit structure of series solid state high frequency welding machine

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The main circuit structure of the series solid-state high frequency welding machine is shown in the figure. It is a typical AC-DC-AC frequency conversion structure. The rectifier uses a three-phase bridge thyristor phase-controlled rectifier circuit, and the DC side uses an inductor and a capacitor to form an LC filter to meet the working requirements of the voltage-type inverter. The voltage-type inverter adopts a modular parallel structure to expand the power of the power supply. Each inverter module is a single-phase MOSFET bridge circuit, and each inverter module is connected through a high-frequency matching transformer and a series resonance tank circuit. The matching transformer on the one hand realizes power synthesis and impedance matching, on the other hand it realizes the electrical isolation of the load and the power supply. The whole high-frequency welding machine has compact structure, small size, convenient maintenance and low failure rate. In order to effectively and quickly protect the voltage-type inverter from over-current faults, the company adopts a unique, stable and reliable over-current protection circuit to ensure the safe and reliable operation of the inverter.

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Equipment components:

1. rectifier cabinet 1 set,

2. inverter cabinet 1 set,

3. The console 1 set,

4. 1 set of single cooling air conditioner,

5. 1 set of cooling system.