Model Inside size (  L W H  )mm Outside dimensions (  L W H  )mm Volume (  L  ) Load capacity (  KG  ) NRD-50L 400 350 350 1150 810 780 50 80 NRD-80L 500 400 400 1250 860 830 80 150 NRD-150L 600 500 500 1430 960 960 150 300 NRD-250L 700 600 600 1530 1060 1060 250 500 NRD-324L 900 600 600 1700 1180 1220 324 650 NRD-500L 1000 700 700 1800 1280 1220 490 1000 NRD-800L 1200 800 800 2000 1380 1320 768 1500 NRD-1500L 1500 1000 1000 2300 1700 1550 1500 2500 NRD-1800L 1800 1000 1000 2600 1700 1550 1800 3000 NRD-2000L 2000 1000 1000 2800 1700 1550 2000 3500 The so-called cryogenic treatment is to use liquid nitrogen (-196 ° C) as a cooling medium to continue the cooling process of the quenched metal material to a temperature far below room temperature, which promotes the acquisition of residual austenite after conventional heat treatment. Further transformation to improve the performance of metal materials. After the cryogenic treatment of metal, the wear resistance, toughness and dimensional stability of metal workpieces can be significantly improved, and the service life of the workpiece is doubled. metal Cryogenic treatment equipment: Improve the hardness and strength of the workpiece Guarantee the dimensional accuracy of the workpiece Improve the wear resistance of the workpiece Improve the impact toughness of the workpiece Improve internal stress distribution and increase fatigue strength Improve workpiece corrosion resistance