Deep Cryogenic Treatment

Deep Cryogenic Treatment

Deep Cryogenic Treatment is a material science and involves the process of reducing the temperature of components over an extended period of time to extreme cold levels, usually slightly below -300°F. Liquid Nitrogen is a common fuel for the process being relatively inexpensive and making up more than 70% of our atmosphere thus having a reduced effect on the environment.

As the LN2 (Liquid Nitrogen) boils off from liquid to gas at around -195 degrees celsius, the components in its proximity are also cooled. The process is controlled by microprocessors so that thermal shock is not generated at the same time resulting in damage to components. Before these microprocessors were created, people would dip parts in liquid nitrogen and virtually turn them to brittle instantaneously.

As the material cools its molecular structure is drawn together through contraction and stress and dislocation brought about by production methods is removed or reduced. Both Einstein and Bose of Germany realized why cryogenic treatment was able to remove residual stresses. Cryogenic treatment removes heat from an object which then allows the object to enter its most relaxed state or a condition with the least amount of kinetic energy. [] After heat treatment, steels still have a certain percentage of retained austenite which can be transformed into martensite via cryogenic treatment. Other effects are the production of martensite, named after the German metallurgist Adolf Martens (1850-1914)in Carbon Steels, and the precipitation of Eta type Carbides. All metals including copper, aluminum, alloy, etc., not just steel benefit from the residual stress relief that cryogenic treatment promotes.

The process has a wide range of applications from industrial tooling to improvement of musical signal transmission. Some of the benefits of cryogenic treatment include longer part life, less failure due to cracking, improved thermal properties, better electrical properties including less electrical resistance, reduced coefficient of friction, less creep and walk, improved flatness, and easier machining.

External links

*Frozen Solid []
*Frozen Solid Audio Ltd []
*Cryogenics International []
*Cryogenic Institute of New England, Inc. []
*Cryogenics Society of America []
*NW Cryogenics []

It has been found and proved that cryogenic treatment improves wear resistance of many alloy steels to a great extent

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • DCT — Discrete Cosine Transform (Computing » General) Discrete Cosine Transform (Academic & Science » Astronomy) Discrete Cosine Transform (Academic & Science » Physics) * Discrete Cosine Transformation (Academic & Science » Mathematics) * Daily… …   Abbreviations dictionary

  • Lithium — (pronEng|ˈlɪθiəm) is a chemical element with the symbol Li and atomic number 3. It is a soft alkali metal with a silver white color. Under standard conditions, it is the lightest metal and the least dense solid element. Like all alkali metals,… …   Wikipedia

  • Accurizing — is the process of improving the accuracy of a firearm or airgun.cite web |url= |title=SAAMI glossary |accessdate=2007 08 30] For firearms, accuracy is defined as the ability to hit exactly what you re aiming at …   Wikipedia

  • Tomorrow and Tomorrow — Infobox Book name = Tomorrow and Tomorrow title orig = translator = image caption = author = Charles Sheffield illustrator = cover artist = country = United States language = English series = subject = genre = Science fiction publisher = Bantam… …   Wikipedia

  • Subzero — literally means beneath zero. As such, it is usually used for negative numbers, especially with regards to temperature. Sub Zero Treatment, also known as cryogenic treatment, utilizes ultra cold temperatures to modify the micro structure of… …   Wikipedia

  • Asia — /ay zheuh, ay sheuh/, n. a continent bounded by Europe and the Arctic, Pacific, and Indian oceans. 2,896,700,000; ab. 16,000,000 sq. mi. (41,440,000 sq. km). * * * I Largest continent on Earth. It is bounded by the Arctic Ocean, the Pacific Ocean …   Universalium

  • Oxygen — This article is about the chemical element and its most stable form, O2 or dioxygen. For other forms of this element, see Allotropes of oxygen. For other uses, see Oxygen (disambiguation). nitrogen ← oxygen → fluorine ↑ O ↓ …   Wikipedia

  • Cryopreservation — of plant shoots. Open tank of liquid nitrogen behind …   Wikipedia

  • List of Bobobo-bo Bo-bobo characters — The universe of the anime and manga series Bobobo bo Bo bobo is a home to a wide array of fictional characters. Contents 1 Main characters 1.1 Bobobo bo Bo bobo 1.2 Beauty 1.3 …   Wikipedia

  • Scuba set — A scuba diver in usual sport diving gear A scuba set is an independent breathing set that provides a scuba diver with the breathing gas necessary to breathe underwater during scuba diving. It is much used for sport diving and some sorts of work… …   Wikipedia