The Research And Development Of Power Supply Of Endless Rolling Welding Machine

In the metallurgy field, the flash welding technology is introduced in the endless-rollingprocess. But the welding machine power supply is very important to the flash welding. It isnecessary to study the welding machine power supply for endless-rolling. It can assure theworking reliability of welding machine, decrease the mechanical and electric fault, prolongapparatus's life, reduce cost and increase product quality. At the same time, it helps to advancingdesign and manufacture level of welding machine power supply of my country.In this paper, the circuit configuration is ascertained on the basis of analyzing other circuitconfiguration of welding machine power supply, which links with the characteristics of endlessrolling.Then, the control model of power supply is designed. The components, controllers andprotecting circuit which suit this circuit is collected through analyzing and calculating. SCRdigital trigger, synchronous, keyboard, display and sampling circuit are designed. Informationcontrol of welding machine and establishes digital, informational, soft control platform ofwelding machine also be put forward. And then, the working circumstances of the power supplycircuit are simulated by the software PSPICE and MULTISIM. On the basis of it, the bug ofcircuit is corrected. The experimentation proves this system based on DSP can work instabilization, satisfy the welder power supply process requirement. All of these indicate that thiswelding machine realizes digital control of welding machine.