What is a cryogenic treatment?
The cryogenic treatment process uses extremely low or cryogenic temperatures to treat and strengthen metals. It is generally used to normalize or eliminate residual stresses in a metal work that has been welded or treated with heat. Temperatures used in cryogenic treatment usually exceed 310 ° below zero fahrenheite (about -190 ° Celsius). Treatment of metal at these extreme temperatures generally leads to a working piece that is more resistant, less susceptible to cracking and easier to make the machine to the finished part. Cryogenic treatment is used in many industries, but is most common in the production of car parts, castings and many types of cutting tools. As the part cools, it is unevenly downloading and leaving residual stresses and potential weaknesses. The same applies to heat treatment and other processes that cause high metal temperatures. Extreme cold temperatures used in cryogenic treatment alleviate these tension and eliminate weaknesses in part by supporting uniform contraction and changing the grain of the alloy. Among the usualCryogenic therapeutic practices include cryogenic deburing and cryogenic hardening.
Deburring is a process of removing sharp edges caused by machining or flash that accumulates when part is occupied or forged. In cryogenic deburing, the working piece is usually cooled by liquid nitrogen to cryogenic temperatures. Extreme cold rendering occurs and fragile blisces, which makes them easier to remove by shot or plaster. Because they are soft and difficult to operate at room temperature, plastic and rubber parts are often cryogenically debated.
When the metal part is treated, a crystalline structure, called austenite, is transformed into another shaped grain called Martensite. Since some standards require martensite than usually produced by thermal processing, transformation is often extended by cryogenic hardening, which is usually performed at -300 ° F (-185 ° C) and below. TeNto the type of cryogenic treatment causes a rapid change in the alloy structure, resulting in a higher percentage of martensite.
The music and electronic industry also found ways to improve the quality of its products through cryogenic treatment. It is believed that the cryogenic treatment of brass tools such as a pipe or saxophone releases residual voltages created during production, resulting in better overall vibration and improved intonation. Even steel guitar strings and electronic components such as stereo cables and connectors are said to have better performance after cryogenic treatment.