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Cryogenic hardening is a cryogenic treatment process where the material is cooled to approximately −185 °C (−301 °F), typically using liquid nitrogen. It can have a profound effect on the mechanical properties of certain steels , provided their composition and prior heat treatment are such that they retain some austenite at room temperature.
The cryogenic treatment process was invented by Ed Busch (CryoTech) in Detroit, Michigan in 1966, inspired by NASA research, which later merged with 300 Below, Inc. in 2000 to become the world's largest and oldest commercial cryogenic processing company after Peter Paulin of Decatur, IL collaborated with process control engineers to invent the world's first computer-controlled "dry" cryogenic ...
Cryogenic deflashing is a deflashing process that uses cryogenic temperatures to aid in the removal of flash on cast or molded workpieces. These temperatures cause the flash to become stiff or brittle and to break away cleanly. Cryogenic deflashing is the preferred process when removing excess material from oddly shaped, custom molded products.
Most Alcor members fund cryonic preservation through life insurance policies which name Alcor as the beneficiary. [7] Members who have signed up wear medical alert bracelets informing hospitals and doctors to notify Alcor in case of any emergency; in the case of a person who is known to be near death, Alcor can send a team for remote standby.
This is a list of large or well-known interstate or international companies headquartered in the Tulsa Metropolitan Area. As of November 2012, Tulsa was home to one Fortune 1000 and two Fortune 500 companies: Dollar Thrifty Automotive Group, energy companies: ONEOK (#219), and The Williams Companies, Inc. (#342). [18]
Cryogenic grinding of plant and animal tissue is a technique used by microbiologists. Samples that require extraction of nucleic acids must be kept at −80 °C or lower during the entire extraction process. For samples that are soft or flexible at room temperature, cryogenic grinding may be the only viable technique for processing samples. [2]
A cryogenic processor is a device engineered to reduce the temperature of an object to cryogenic levels, typically around −300°F (−184.44°C), at a moderate rate in order to prevent thermal shock to the components being treated. The inception of commercial cryogenic processors dates back to the late 1960s, pioneered by Ed Busch. [1]
Tempering times vary, depending on the carbon content, size, and desired application of the steel, but typically range from a few minutes to a few hours. Tempering quenched steel at very low temperatures, between 66 and 148 °C (151 and 298 °F), will usually not have much effect other than a slight relief of some of the internal stresses and a ...