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This kind of microcomputer-controlled semi-automatic wet process magnetic particle inspection equipment is applied to MPI of bearing ring and circular ferromagnetic parts of similar shape. Mechanical program actions of the system are controlled by PLC and flaw inspection beyond visual inspection can be completed as per set program; it can be operated bother automatically and manually. Threading bar technique and electromagnetic induction method are applied by circumferential and longitudinal magnetization respectively for alternate resultant magnetization of working pieces; equipped with cut down phase control function, the equipment is able to detect subtle defects on internal and external surfaces as well as near-surface including cracks and slag inclusions caused by material, forging, hardening, grinding and ageing.

Technical Parameters:

Threading bar magnetization current: AC 0－6000A (TRMS), continuously adjustable, equipped with cut down phase control function;

Longitudinal magnetic potential: AC 0－10000A (TRMS), continuously adjustable, equipped with cut down phase control function;

Threading bar method: electric or pneumatic;

Magnetization mode: circumferential, longitudinal and resultant;

Operation mode: semi-automatic and manually single operation;

Automatic tracking of magnetization current and automatic compensation.