Subzero treatment

Subzero treatment is a critical step in the hardening process of metal manufacturing. By reducing the temperature of the metal to a degree below room temperature, it transmutes the austenite into martensite. This physical change is more than just an altering of the crystalline structure of the material—it increases the wear resistance and stability.

Subzero treatment is especially effective and useful in metals such as alloy and tool steels, but can be used on virtually any metal and even some plastics. Examples of some familiar products subjected to subzero treatment include brake rotors, tool and die parts, gun barrels, shafts, and anything else that needs improved wear resistance.

Tags: Batch freezer - Blast chiller - Blast freezer, blast freezing - Cryogenic refrigeration - Cryogenic treatment - IQF - Spiral conveyor - Spiral cooler - Spiral proofer