Cryogenic box

Cryogenic box

In industry, the treatment method of further cooling materials that have undergone ordinary heat treatment to 100 ℃~196 ℃ is called cryogenic treatment. It can reduce the residual oxygen content, promote the precipitation of small carbides, reduce intergranular tensile stress, and thereby improve the following macroscopic properties:

Improve hardness: High speed steel and mold steel increase Rockwell hardness by 1-2 degrees.

Improve wear resistance: The wear resistance of Cr12MoV steel is increased by 30%, and the wear resistance of 20Ni3Mo carburizing steel is increased by 89%.

Improve bending strength: The bending strength of 440A cast stainless steel has been increased from 1135MPa to 1355MPa.

Improve toughness: The impact energy of W6Mo5Cr4V2 has been increased from 18J to 40J.

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

Improve dimensional stability: The residual austenite of 95Crl8 stainless steel is reduced from 35% to 10%.

Improving conductivity: The resistivity of copper alloy Cu-15Ni-8Sn decreased from 286 × l0-7 Ω. m to 1.5l × l0-7 Ω. m.

With the development of liquid nitrogen low-temperature technology and the improvement of experimental methods, research on cryogenic treatment has gradually deepened, and the research scope has now extended from iron production to powder metallurgy, copper, aluminum alloys, and other non-metallic materials. The application industry covers many fields such as aerospace, hardware, tools, molds, friction parts, precision machining, measuring tools, textiles, automobiles, etc.

Cryogenic technology is currently an economical and effective way to improve the performance of metal material workpieces. Characterized by consumables, low power consumption, and no environmental pollution, it is a new type of environmental protection technology. At present, this technology has been widely applied in industries such as aerospace, shipbuilding, military, manufacturing, automotive, hardware tools, sports equipment, etc.

Cryogenic boxModel(Customizable as needed)

Technical parameters of cryogenic box (* is an optional parameter)

1. The model, effective size, capacity, and load-bearing capacity are shown in the table above

2. Temperature range: -190 ℃~+180 ℃ * -196 ℃~+250 ℃

3. Heating and cooling speed: ≤ 5 ℃/min * ≤ 10 ℃/min

4. Door opening method: Open the door upwards

5. Temperature uniformity: ± 2 ℃

6. Temperature control accuracy: ± 1 ℃

7. Outer surface temperature of the box: ≤ room temperature ± 5 ℃