300 Below Inc's computer controlled, dry nitrogen deep cryogenic tempering service has brought significant gains to the wear life of sizing and shaping rolls. After seeing our technology profiled on The Discovery Channel, a high volume stainless steel tube mill located in the south decided to have some of their work rolls treated. After subjecting D-2 rolls hardened to RcH 50 (approx. 6" d., 5" root, 2" bore) to cryogenic tempering, wear life increased significantly. The company reports the number of regrinds on the rolls have been cut in half, and is so pleased they now treat rolls from a second facility.

Deep cryogenic tempering enhances the wear properties of certain grades of steel through a combination of stress relief and stabilization, completion of the martensitic transformation, and eta-carbide precipitation. Recent research indicates eta-carbide precipitation, which fills in the micro-voids of steel and supports the martensitic matrix, plays a vital role in extending wear life, and it is only generated through controlled exposure to deep cryogenic temperatures followed by low grade heat tempering. While not a cure-all for all tool wear problems, the tube mill industry has many applications which may benefit from the process.

Further Information:
300 Below, Inc.
Steven Green
Addr. 2101 East Olive, Decatur, IL 62526
Tel. 217-423-3070
Fax. 217-423-3075
Email.
WWW. http://deepcryo.com