Our Craftsmanship

our product

(1) Material inspection

Materials are stored under the appropriate conditions and quality inspections are performed prior to use.
(2) Core winding

Core winding process
Electromagnetic steel sheet is wound to form cores.
(3) 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.
(4) Varnish impregnation and curing

Automated varnish impregnation process
Heat-treated cores are impregnated with varnish.
(5) Molding

Molding process
Cores are partially molded with resin.
(6) Gap cutting

Gap cutting process
A portion of the each partially molded core is cut to create a gap.
(7) Ultrasonic welding

Cores are automatically housed in cases and ultrasonic welding is performed.
(8) Final inspection

Each sensor core is inspected by an automatic inspection system and the cores are arranged in trays.
(9) Quality Assurance

Quality is assured by verifying factors such as a product’s magnetic characteristics.