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cryogenic metal treatment
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∙ 10y ago
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What has the author Gareth O'Rourke written?
Gareth O'Rourke has written: 'The cryogenic heat treatment of tool steels' -- subject(s): Heat treatment, Tool-steel, Low temperature engineering
Explian about cryogenic hardening?
Cryogenic hardening is often referred to cryogenic treatment and cryogenic processing. Using the term "hardening" is not correct. Cryogenic treatment does not increase the hardness of metals (I.E. rockwell hardness). Rather it changes metals on the molecular level so that they perform better. Cryogenic treatment is used for a variety of reasons including improving dimensional stability, stress relieving, increasing wear resistance, and eliminating walk and creep. A typical cryogenic treatment lasts for several days. Metal and steel parts will be put in a cryogenic processor at room temperature. The temperature will slowly be taken down to -300F below. Then it will hold there for 12 to 24 hours depending on the company doing the treatment. After that, the processor will have the temperature raised back to room temperature very slowly. Finally, the parts will be post-tempered to finalize the cryogenic treatment. Cryogenic treatment re-aligns the micro-structure of the metal to improve its structural stability. Retained austenite will be converted to martensite which allows for a tougher piece of metal. The eta-carbides in the metal will become precipitated which allows for a much higher degree of wear resistance. Below are some good sites for additional reference...
Is cryogenic freezing related to nitrogen?
Cryogenic freezing is certainly related to nitrogen. In order to complete a deep cryogenic treatment a cryogen must be used. The least expensive cryogen for deep freezing is liquid nitrogen. Another cryogen is helium which allows special made cryogenic processors to reach temperatures approaching absolute zero.
When was Heat Treatment created?
Heat Treatment was created in 1976.
Why cryogenic fluid is superior to any other cooling fluid in powered equipments?
due to the high heat generation in powered equipments there is requirement of maintaining the properties of fluid at high temperature hence cryogenic material have better properties.
What treatment options are available to treat cervical dysplasia?
If cervical dysplasia is confirmed by a second smear test then treatments can include a cone biopsy. If the dysplasia is more severe then cryogenic treatment may be required..
What are the some example of cryogenic gases?
Any gas that liquifies below -150 degrees C is a cryogenic gas. The most popular cryogenic gas is liquid nitrogen.
When heat is added or subtracted is called?
heat treatment
Post weld heat treatment for aws D1.1?
AWS D1.1; 5.8 "Stress-Relief Heat Treatment"
What is a common form of heat treatment using conduction?
Hot packs are a very common form of heat treatment utilizing conduction as a form of heat transfer.
What is cryogenic freezer?
A cryogenic freezer is used to bring components inside the freezer down to cryogenic temperatures. Many cryogenic freezers are available for all sorts of applications. Cold boxes with added ln2 capabilities can refrigerate parts and then complete cryogenic processing cycles. Additionally, cryo freezers are available to freeze sex cells, stems cells, and more. Sometimes people are frozen after death, which is called cryonics. I have added a site below that has cryogenic freezers and processors available.
What rhymes with photogenic?
cryogenic :)
