The main function and application range of liquid nitrogen cryogenic treatment equipment

2022-11-15 13:55:19

In industry, the treatment method of further cooling the material after ordinary heat treatment to 100℃ ~ 196℃ is called cryogenic treatment. It can reduce the residual content, promote the precipitation of fine carbide, reduce the intergranular tensile stress, and then improve the following macro properties:

Increase hardness: high speed steel, die steel increase Rockwell hardness 1 ~ 2 degrees.

Improved wear resistance: wear resistance of Cr12MoV steel increased by 30%, and wear resistance of 20Ni3Mo carburized steel increased by 89%.

Improve the bending strength: the bending strength of 440A stainless steel is increased from 1135MPa to 1355MPa.

Improved toughness :W6Mo5Cr4V2 impact energy increased from 18J to 40J.

The hardness of W18Cr4V increased from 57.9 Rockwell hardness to 63.9 at 625℃.

Improved dimensional stability :95Crl8 stainless steel residual austenite reduced from 35% to 10%.

Improved electrical conductivity: the resistivity of copper alloy Cu-15Ni-8Sn is reduced from 286×l0-7Ω.m to l.5l×l0-7Ω.m.

With the development of liquid nitrogen cryogenic technology and the improvement of test means, the research on cryogenic treatment has been gradually deepened, and the research scope has been extended from iron to powder metallurgy, copper platform gold, aluminum alloy and other non-metallic materials. The industry is widely used in aerospace, hardware, tools, molds, friction coupling parts, precision machining, measuring tools, textile, automotive and many other fields.

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.