ZY018 cryogenic treatment equipment

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 the most effective and economical 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.

Application scope of cryogenic box

Used for deep cryogenic treatment of various metal materials such as high-speed steel, hard alloy, measuring tools, cutting blades, molds, saw blades, oil pumps, oil nozzles, micro motor shafts, automotive bearings, golf ball heads, rolling mills, low-temperature valves, aluminum alloys, copper alloys, hardware, tools, springs, gears, bearings, diamonds, mining, geological drill bits, steel sheets, mechanical parts, pharmaceuticals, biotechnology, aerospace, etc., as well as interference cooling and ultra-low temperature environment simulation of various components

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 ℃

Cryogenic boxfeature

1. Refrigerant medium: liquid nitrogen (LN2)

2. One click operation, simple and stable

3. The box is insulated with imported customized multi-layer composite insulation materials, with a thermal conductivity of 0.018-0.024w/(m.k)

4. The infusion tube adopts super extreme vacuum insulation insulation, with a vacuum degree of ≤ 1.33 × 10-3Pa

5. Liquid nitrogen atomization+DTD technology can meet the requirements of atomization protection for workpieces and uniformity

6. The control system adopts touch screen+PLC, PID control mode, * * temperature control, and can achieve data storage and query functions

7. Equipped with external interfaces such as USB, serial port, and Ethernet port

8. Automatically print the process report after the process is completed

9. The temperature sensor adopts a PT100 platinum resistance thermometer with high precision and has been verified by an institution

10. Record the process temperature using a paperless recorder or a paper-based recorder

11. Parallel connection of solenoid valves, one for backup and one for use, one key switching

12. Liquid nitrogen gas recovery function, which can recover the nitrogen gas discharged after refrigeration to the storage tank for use in the heat treatment furnace

13. Reminder and alarm function:

Equipped with over temperature sound and light alarm device

Emergency stop function, which can cut off the heating or cooling function to ensure safe use