Production Processes
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(1) Material inspection
The electromagnetic steel sheet used to make sensor cores is thoroughly inspected before being stored in inventory.
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(2) Core winding
Core winding process
Electromagnetic steel sheet is wound to form cores. -
(3) Annealing
Annealing process
Cores are arranged in a circular basket and heat-treated at a high temperature in an annealing furnace. -
(4) Annealing
Annealing process
Cores are heat-treated at a high temperature in an annealing furnace to relieve mechanical strain and restore the magnetic properties to ensure high performance. -
(5) Varnish impregnation and curing
Automated varnish impregnation process
Heat-treated cores are impregnated with varnish. -
(6) Primary molding
Primary molding process
A layer of resin is molded onto a portion of each core. -
(7) Gap cutting
Gap cutting process
A portion of the each partially molded core is cut to create a gap. -
(8) Ultrasonic welding
Ultrasonically-welded casing
Cutting process
Photographed from the secondary molding process side -
(9) Final inspection
Each sensor core is inspected by an automatic inspection system and the cores are arranged in trays.