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A high frequency quenching with a numerous track records in multi turn coil.
By applying a high frequency electrical current evenly to place where quenching is required in an inner groove, a deep uniformed quenching layer can be formed without any overheating, melting, or temperature differences.

A central coil quenching provides plentiful quenching depth for R while leaving no uneven quenching depth, uneven depth quenching, or burn deformation behind,

Since our coils are highly functional, highly durable, and highly precise, meaning, overall running cost can be reduced through less coil repair cost, less electricity usage amount, and less quality inspection process after coil exchange.

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