Ratchet-tempering

Ratchet-tempering

Differential shell --- nitrogen carbon co-osmosis.

Differential shell --- nitrogen carbon co-osmosis.

Tooth shell --- nitrogen carbon co-osmosis.

Tooth shell --- nitrogen carbon co-osmosis.

Shift shaft-oxidation after nitriding

Shift shaft-oxidation after nitriding

Tooth shell-nitrogen carbon co-osmosis induction quenching.

Tooth shell-nitrogen carbon co-osmosis induction quenching.

Tooth plate-induction hardening

Tooth plate-induction hardening

Ball pin-induction hardening

Ball pin-induction hardening

Three-column trough shell-induction hardening

Three-column trough shell-induction hardening

Front door lock hook-carbon nitrogen co-penetration.

Front door lock hook-carbon nitrogen co-penetration.

Hook --- quenching

Hook --- quenching

Worm-tempering

Worm-tempering

Piston --- nitrogen carbon co-osmosis oxidation.

Piston --- nitrogen carbon co-osmosis oxidation.

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