Wuxi Guanya Refrigeration Technology co., ltd
Metal stamping cold treatment

Metal stamping cold treatment

  • Product Description

The cryogenic process can improve the performance of metal materials. Effective and economical technical indicators. During the cryogenic process of martensite, the residual austenite is transformed, and the performance of the finely dispersed carbides in the material changes, which can hinder the movement of dislocations. The ultra-fine carbides strengthen the matrix structure and play the role of grain boundary strengthening, and the following three aspects are improved: impact toughness, wear resistance, and dimensional stability.

In the industry, the treatment method of further cooling the material after ordinary heat treatment to 100 ℃ ~ 196 ℃ is called cryogenic treatment, which can reduce the content of paralympics, promote the precipitation of fine carbides, reduce intercrystalline tensile stress, and thus improve the following macroscopic properties :

Increase hardness: High-speed steel and die steel increase Rockwell hardness by 1 to 2 degrees.
Improve wear resistance: Cr12MoV steel wear resistance increased by 30%, 20Ni3Mo carburized steel wear resistance increased by 89%.
Increased bending strength: The bending strength of 440A cast stainless steel increased from 1135MPa to 1355MPa.
Improve toughness: W6Mo5Cr4V2 impact energy increased from 18J to 40J.
Improve Red Hardness: The hardness of W18Cr4V increases from Rockwell hardness 57.9 to 63.9 at 625 ℃.
Improve dimensional stability: 95Crl8 stainless steel residual austenite is reduced from 35% to 10%.
Improve conductivity: The resistivity of copper alloy Cu-15Ni-8Sn decreases from 2 86 × l0-7 Ω.m to 1.5l × l0-7Ω.m.

With the development of low-temperature technology and the improvement of test methods, people have gradually deepened the research of cryogenic treatment. The research scope has now extended from iron making to powder metallurgy, copper alloy, aluminum alloy and other non-metallic materials. Cryogenic chamber application industries are found in many fields such as aerospace, hardware, tools, molds, friction parts, precision machining, measuring tools, textiles, and automobiles. Cryogenic technology is currently a high-tech to improve the performance of metal materials.

It is 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 used in aerospace, marine, military, manufacturing, automotive, hardware tools, sports equipment and other industries.

GY-A350N GY-A3A10N GY-A550N GY-A5A10N
500L 1000L 500L 1000L
Inner dimension
1200*650*650 1550*800*750 1200*650*650 1550*800*750
Type (Vertical)
Capability carrying
220KG 300KG 220KG 300KG
Designed bearing capacity is two times of the standard one, (refrigeration system is designed according to the standard
capacity when target artifact weight is greater than the standard capacity, the cooling rate will decrease)
Temp. range
-135℃~0℃ -135℃~0℃ -150℃~0℃ -150℃~0℃
Cooling capacity
1kw -125℃ 2 kw -125℃ 1 kw -140℃ 2kw -140℃
Temp. accuracy
±2℃ ±2℃ ±2℃ ±2℃
Heating power
3kw 5kw 3kw 5kw
Nickel-chromium alloy electric heating heater, the controller has double safety protection, with independent temperature
limiter protection.
Cooling rate Ambient temperature of 25℃, no-load,(from 0℃to -110℃ about 1 .5 hour;
from 0℃ to -140℃ about 2 hours, cooling rate will be a little different for ambient temperature changes.
Controller ASET multifunctional controller
Operation panel 7-inch color touch screen, display set temperature, measured temperature.
Temp. record Temperature curve and fault record, U-disk data export, excel format.
Inside circulating air
2750 m³/h 4500 m³/h 2750 m³/h 4500 m³/h
When it is open, the internal circulation fan automatically turns off. The touch screen displays open state.
Compressor Emerson Copeland, adopt cascade refrigeration technology
Intermediate heat
KAORI Plate heat exchanger
Dry filter Emerson
Expansion valve Electronic expansion valve
Evaporator Copper-tube with aluminum-fin
Cooling Type Air-cooled with water-cooled auxiliary functions (Ensure good cooling capacity when temp. above 30℃)
Means of insulation Polyurethane foam insulation, thermal insulation layer 150 mm, with embedded FIR boards
Safety Protection Self-diagnosis function; Phase sequence phase failure protection; leakage protector; cooling unit overload protection;
high and low-pressure switch, overload relay, thermal protection, high-temperature protection and temperature
fault protection.
Case material Outside is cold rolled steel painting, internal is SUS304 wire drawing board.
Refrigerant Mix Refrigerant from LNEYA
Power 380V 50HZ
750kg 900kg 800kg 980kg
Optional High temperature reaches 80℃ and temperature accuracy is ±0.5℃;the input power will be changed.
Optional Temp. accuracy ±0.5℃
Optional Cooling and heating program controlled, meet cold treatment process requirements(can set 5 programs, each
program can edit 45 steps.)
Optional Interior door, reduce cooling capacity lost when picking small workpieces (temperature below 60℃ optional)
Optional Outside SUS304 wire drawing board case
Optional Diameter 50mm cable hole
Optional Electric heating vacuum glass observation window (with lighting) 200mm*300mm
Optional Low temperature automatic defrost (can be once per hour or use manual button to defrost), ensure it can work at
low temperature for a long time even the door is open and close frequently)

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