Drill | mold | bearings | parts | tool cryogenic treatment | liquid nitrogen cryogenic tank | use of metal surface treatment unit: Life Sciences, Peking University, the China Carrier Rocket Research Institute, China Academy of Space Research Institute of Genetics and Developmental Biology of the Chinese Academy of Sciences, Chinese Academy of Forestry Research Institute , the First Affiliated Hospital of China Medical University, Nanjing, Shandong University of Life Sciences, Peking University, Department of Space, 23, 504, Shanxi Taiyuan Chemical Group, the strength of the source in Beijing, Shenzhen Senke Hardware, Chinese Academy of Medical Sciences virus, China's Sinopec Shengli Oilfield Shaanxi Quantum Hi-Tech Pharmaceutical Group, Chengdu Modern Nanguang, Shen Zhen Hua Dongtian precision coating plant. -90 ° C and -120 ° C ultra-low temperature metal processing box Ultra-low temperature metal processing box cold processing technology in recent years, the rise of a new technology to improve the performance of metal workpieces. Temperature treatment, the metal material in the cooling process after quenching continue to reach a temperature below room temperature, thereby improving the cryogenic processing of metallic material properties. After treatment to increase the wear resistance and dimensional stability of the metal work, so that the service life of the tool and die to exponentially increase. (1) the content of residual austenite in the metallic material can be drastically reduced to below 3%, so that the size of the stability can be greatly improved. (2) generated in the metal structure matrix microstructure uniform, fine dispersion carbonization precipitate. This carbide precipitation phenomenon will to metal wear resistance and friction performance with significantly higher hardness will increase, and will directly improve the life of the wear parts. Experiments show that: high-speed steel cutting tools by low temperature treatment, wear resistance is increased three-fold. The friction coefficient reduced by 20%, the hardness increased 1-4 times, the service life is 1-3 times. The other materials were also obtained similar results extend the life. These two aspects of the profound changes in the cold processing technology has unique advantages. Cryogenic treatment, also known as the ultra-low temperature processing: refers to a method, which is an extension of the conventional cold processing the material processed in the below-130C. Cryogenic treatment can not only significantly improve the ferrous metals, non-ferrous metal alloys, carbides, plastics (including nylon, Tai Fu Dragon), silicate materials mechanical properties and service life, stable size, improved uniformity, reduce deformation, and easy to operate, and does not destroy the workpiece, pollution-free, low-cost, has considerable economic and market prospects. The company developed the "profile" -150 ° C ultra-low temperature metal processing box, can completely replace the ideal equipment for liquid nitrogen cryogenic processing box, to solve the inconvenience of liquid nitrogen in the procurement, transportation and storage, to be dropped for the user to production costs and improve efficiency. The ultra-low temperature refrigeration compressor imported cascade, internationally renowned brand parts production, stable performance, reliable operation. Stainless steel liner, double insulation, good looks, its low noise, low energy consumption, economical and practical. Greatly enhanced by both fan and natural convection cooling mode, the machine's ability to adapt to the high temperatures and dirty environment. Gradually won recognition of the domestic and international markets with a strong cost advantage. Cryogenic processing is widely used in metal materials, parts, tools, turned, metal, molds, bearings and other metal materials. Continue the cooling process of the metal material after quenching, to reach a temperature of less than room temperature, thereby improving the cryogenic processing of metallic material properties. After treatment to increase the wear resistance and dimensional stability of the metal work, so that the service life of the tool and die to exponentially increase. (1) the content of residual austenite in the metallic material can be significantly reduced. Metal material in the cooling process from high temperature to room temperature experienced by the structure of austenite to martensite transformation. This process is accompanied by a volume expansion of the long duration of this process, often need several years to stabilize, and there are still more than 12% of the retained austenite in the stable. This time stability to bring precision metal parts failure after working for some time to make some close fitting metal pieces. (2) generated in the metal structure matrix microstructure uniform, fine dispersion carbonization precipitate. The presence of retained austenite transformation case setback stagnant results, changes in the structure of the performance of the heat treatment process can not conduct a thorough, reflect the serious lack of change in power. Experimental and theoretical showed that this shift power can only be achieved by increasing the temperature difference between the high and low temperature phase to below room temperature until the absolute zero, the temperature of the space is the room to improve the shift power. This reduced shift power increased with the temperature of the material together the metal interstitial way to exist in the microscopic structure the charcoals status shaken and precipitation. This carbide precipitation phenomenon will to metal wear resistance and friction performance with significantly higher hardness will increase, and will directly improve the life of the wear parts. Experiments show that: the low-temperature processing of high-speed steel cutting tools, wear resistance is increased three-fold. The friction coefficient reduced by 20%, the hardness increased 1-4 times, the service life is 1-3 times. Other materials Experimental also obtained similar results extend the life, for example, alloy steel, polycrystalline diamond, etc., particularly a process of the stamping die effect is particularly evident, and improve the life of up to several tens of times. These two aspects of the profound changes in the cold processing technology has unique advantages. 1. Treatment effect directly acting on the inside of the handle pieces, not limited to the surface, the overall effect, so that the cutting tool regrinding then, it will not invalidate the treatment effect. 2 a low temperature process to a stabilizing effect on the shape and dimensions of the workpiece. Cold processing so that those strict dimensional requirements of the workpiece advance, can greatly improve the shape and size of the temperature qualitative and and reduce quenching stress being processed and the role of improving the strength. Restricting the development of domestic reasons: Little information is not widely applied, cause information not smooth. 2. Skeptical, really can increase life expectancy? 3 poor, expensive liquid nitrogen source. Increased costs, the price will not increase, which is the main constraint. Main features: 1 main components used in all the well-known foreign brands, running more secure; unique cooling mode, about 30% more efficient than the traditional way; refrigerant environmentally friendly CFC-free refrigerant; 6. Within gall bladder made of stainless steel; 7. the intracavity rounded design, easy to clean; 8. outer door silicone door seals tightly sealed air-conditioned; 9.R232 interface (optional) to help data analysis; 10. removable cleaning precipitator 11. the high domestic door and wide, do not have to worry about handling and placement locations; 12 extra-thick polyurethane insulation layer of the thermal and structural reinforcement; 13 with the door locks and power locks; 14. light, sound alarm; 15. domestic product after-sales service more secure. Origin of the main parts: 1. Compressor: Maneurop (imports). Pressure relay: the Danish DANFOSS3. Filter drier: the Danish DANFOSS4. Pressure controller: the Danish DANFOSS5. Blower: German EMB6. Temperature relay: Germany LR7. intermediate relay: Japan OMRON temperature control: Japanese RKC technical parameters: Model: TH-120-150-WA inside temperature: -120 ℃ Volume: 150L Temperature range: -80 ° C - 120 ℃ Voltage: 380V Power: 1800W Current: 7A noise: 65 dB Dimensions (LxWxH): 1400X820X1000 liner Dimensions (LxWxH): 540X540X550 liner material: stainless steel compressor: Maneurop (imported) Model: TH-150-150-WA inside temperature: -150 ℃ Volume: 150L Temperature range: -100 ° C - 150 ° C voltage: 380V Power: 3000W Current: 12A Noise: 67 dB Dimensions (LxWxH): 1500X820X1100 liner Dimensions (LxWxH): 540X540X550 liner material: stainless steel compressor: MANEUROP (imports) drill | mold | bearings | parts | tool cryogenic treatment liquid nitrogen cryogenic tank metal surface treatment drill | mold | Bearing | Part | Tool cryogenic treatment | liquid nitrogen cryogenic tank metal surface treatment drill | mold | bearings | parts | tool cryogenic treatment | liquid nitrogen cryogenic tank | metal surface treatment