Deep cooled treatment is the rise in recent years, a new technology to improve the performance of metal work piece. The so-called deep cooled treatment with liquid nitrogen (-196 ° C) to continue, as the cooling process of the metal material after quenching of the cooling medium to a temperature far below room temperature, prompting the conventional heat treatment of retained austenite further transformation, thereby improving the metal material properties. After cooled treatment can significantly improve the metal work piece wear resistance, toughness and dimensional stability, exponentially increase the life of the work piece.
Improve the effectiveness of cooled processing technology penetrate the processing of internal (overall effect), is not limited to the surface, so on the cutting tool regrinding and then does not make the modification effect of work piece failure; the shape and size of the work piece is not only not cause change, and enhanced dimensional stability and reduce the quenching stress; process system is simple, less power consumption, from the work piece shape and size restrictions, easy to operate; without any environmental pollution, it is completely environmentally friendly technology.
Cooled processing technology appeared, it caused a high degree of attention of the scientific research community and industry in foreign countries has been used in cutting tools, measuring tools, molds and precision parts, such as pump fuel injectors, engine turbine shaft, rollers, valves, gears, springs and other parts of the modified. Cooled modified technology is gradually get the attention and development of the business community, has already obtained the experimental results and the results obtained show that the cooled modified technology can be applied in the following areas:
1. high-speed steel cutting tools, cutting tools, measuring increase in life;
2, carbide cutting tools, cutting tools increase in life;
3, carbide drill bit, drill the increasing life expectancy;
4.Diamond manufactures performance improvement, to improve thermal stability, such as synthetic diamond, synthetic diamond mining increased the performance of the drill bit, diamond Φ105mm saw blades;
5 hot press diamond anvil performance;
6, the size of the assembly of precision mechanical parts and stability;
7, to improve the performance of carbon fiber shaft;
8, glib, springs, gears, bearings service life;
9, the heat in the machinery manufacturing industry for mold, cold mold service life.



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