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Cryogenic treatment and heat treatment of workpiece

2022-11-23 14:15:37


Cryogenic treatment refers to the method of treating the workpiece at a temperature below -130℃ with liquid nitrogen as the refrigerant. Cryogenic treatment can significantly improve the toughness of the workpiece without reducing the strength and hardness. Cryogenic treatment methods are divided into liquid method and gas method. Liquid method is to put the workpiece directly into the liquid nitrogen, the processing temperature is -150℃, the disadvantage is that the thermal shock is large, sometimes even cause the workpiece cracking; Gas method is through the latent heat of liquid nitrogen gasification and low temperature nitrogen endothermic refrigeration, the treatment temperature up to -196℃, the treatment effect is good.
Heat treatment of metal materials is a kind of metal thermal processing technology to obtain the required properties of materials. By means of heating, insulation and cooling, the chemical composition and organization on the surface or inside of the materials are changed, so as to improve the properties of materials. However, sometimes the conventional heat treatment process cannot meet the requirements. Cryogenic treatment of metal materials is a new technology to improve the properties of metal materials.
Cryogenic treatment technology uses liquid nitrogen as the cooling medium to continue the cooling process of quenched metal materials to a temperature far below room temperature. Cryogenic treatment can precipitate ultrafine carbides and improve the wear resistance of the workpiece. It can refine grain and improve the impact toughness of workpiece. It can transform the Paralympic, improve the hardness and wear resistance of the workpiece, and stabilize the size of the workpiece. It can double the corrosion resistance of martensitic stainless steel and improve the polishing performance of the workpiece. It can improve the electrical conductivity and corrosion resistance of non-ferrous metals. Can reduce mold deformation, cracking. Improve the dimensional accuracy of the workpiece.

Nuoruida (Tianjin) science and Technology Co., Ltd. is committed to research, development, and sales of liquid nitrogen freezer. Using European technology, we provide a variety of equipment. The main equipment is liquid nitrogen Cryogenic treatment equipment, cryogenic freezer, liquid nitrogen cabinet freezer, liquid nitrogen tunnel freezer,sub-zero processing equipment, low temperature cold assembly equipment, cryogenic freezing equipment, and so on.

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