Bearing cryogenic machine

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 ℃.
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.

Model	GX-A028N	GX-A050N	GX-A0A10N
Volume	280L	500L	1000L
Inner dimension	610600 760	800735 850	10001000 1000
Type	（Vertical）
Capability carrying	150KG	220KG	300KG
Capability carrying	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	-100℃～60℃	-100℃～60℃	-100℃～60℃
Cooling capacity at -90℃	0.7kw	1 kw	2 kw
Temp. accuracy	±2℃	±2℃	±2℃
Heating power	2kw	3kw	5kw
Heating power	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 60 ℃s to -95 ℃ about 1 hour).；cooling rate will be a little different for 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	1650 m³/h	2100 m³/h	2750 m³/h
Inside circulating air	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 exchanger	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 125 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 device, high temperature protection and temperature fault protection.
Case material	Outside is cold rolled steel painting, internal is SUS304 wire drawing board.
Refrigerant	R404A R23 R14
Dimension	11501150 1850	13501300 1850	15501500 2100
Power 380V 50HZ	9KW MAX	13.5KW MAX	18KW MAX
Weight	470kg	580kg	750kg
Optional	High temperature reaches 150℃ and temperature accuracy is ±0.5℃；the input power will be changed （When select this model, the thickness of thermal insulation layer will be 150mm，thermal insulation material will be silicate and vacuum plate）
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 long time even the door is open and close frequently）

Bearing cryogenic machine

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