Protective Atmosphere Normalizing

The process of heating steels to the suitable temperature according to the kind of steels, followed by still-air cooling to remove the thermal influence of forging or hot rolling.

This treatment refines the grain size and enhances the uniformity of the microstructure. In some instances, this treatment will improve machinability.

A previously cold worked part will soften when normalized. An annealed part will harden when normalized.

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