-190 Cryogenic Tunnel Freezer Ultra Low Temperature Metal Processing Line Deep Freezer
Cryogenic treatment technology is a new technology developed on the basis of ordinary cold treatment (-100~ 0℃) in the 1960s. It is a method of processing materials below -130℃ and is the latest material to be strong and tough. One of the chemical treatment processes.
Cryogenic treatment can effectively improve the mechanical properties and service life of steel materials, non-ferrous metals and composite materials, stabilize size, improve uniformity, reduce deformation, and be easy to operate, without damaging the workpiece, without pollution, and low cost. Mainly used in standard industry, tool industry, textile industry, nozzle oil pump, bearing, aerospace sector, etc. The materials are mainly tool steel, bearing steel and high-speed steel.
The metal material is cooled to -130℃～-196℃ to improve the mechanical properties and service life of the metal material. After the metal parts are quenched, the austenite cannot be completely transformed into martensite at room temperature. The retained austenite will slowly undergo martensite transformation during the use of the parts, and it will be accompanied by volume expansion. , It will cause the size of the part to change and affect the normal use of the part.
Low temperature treatment reduces the temperature of the quenched metal workpiece to a lower temperature range (-70℃～-80℃) relatively quickly to eliminate the retained austenite in the metal part, improve the dimensional stability of the part, and increase it at the same time A method for the mechanical properties of metals, widely used in the subsequent processing of bearings, shaft parts, precision matching parts, etc., is also a very effective method for shrinking parts.
Inner cavity dimension
Why take cryogenic treatment of the workpiece?
* To improve the hardness and strength of workpiece
* To improve the abrasion resistance of workpiece
* To improve the impact toughness
* To improve the fatigue strength
* To improve the corrosion resistance of workpiece
* To improve the internal stress distribution of workpiece
* To ensure the dimension accuracy of workpiece