... multi-display functions, with displays of over current, over voltage, water failure, phase failure and unfit lad and so on, machine ... improve the repeatability. Applications:1, diamond tools, carbide cutting tools welding.2, metal steel - steel, steel - copper, copper - ... copper equivalent metal or dissimilar metals in the high-frequency welding.3, metal quenching, annealing, quenching, tempering and ...