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Magnetization power main circuit used has currently advanced of testing machine SCR electrodeless adjustable pressure technology, using three-phase Exchange electric mutual into 120 degrees phase poor of principle, week to used power method, longitudinal used magnetic yoke coil method, makes two road magnetization current while imposed yú was exploration artifacts surface for composite magnetization, let lines rotating, thus check out artifacts surface and the near surface due to forging, and quenching, and grinding, and fatigue and caused of cracks and the clip slag, subtle of defects, except composite magnetization outside, also can on artifacts respectively for single week to and single longitudinal magnetization, The magnetization current adjustable separately, both phase control function with power outages, when in single magnetized in one direction, either by using continuation method and remanence inspection.