Gear assembly refrigerator

Product Description

Gearbox gear cold assembly refrigerator 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 properties of fine and dispersed carbides change in the material. The ultra-fine carbides that can prevent the movement of dislocations, thereby strengthening the matrix structure and exerting the effect of strengthening the grain boundaries. 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 residual Olympics, promote the precipitation of fine carbides, reduce intercrystalline tensile stress, and thus improve the following macroscopic properties .

Train mechanical gearbox gear cold assembly refrigerator cold assembly has the following advantages compared to hot assembly and press-fit assembly:
1) Safety: The cold assembly process is safer and more reliable, and the workpiece is not easy to be damaged; the hot assembly process has a high temperature on the site, which can easily cause burns to personnel, and the workpiece can be damaged if pressed into the assembly.
2) Processability: The quality of cold assembly is high, the centering of the workpiece is good, and the bearing capacity is strong; the quality of the hot assembly is not easy to control, the workpiece is easily deformed, and the parts and the base hole are not firmly combined when pressed into the assembly.
3) Operability: The cold assembly operation is simple and convenient, economical and practical; the hot assembly process is complicated, requiring workers to repeatedly check the aperture size, and pressing into the assembly requires that the center line of the hole and the shaft be consistent. Simple operation and convenient maintenance.

The inner wall is made of stainless steel and has a composite thermal insulation structure. The internal airflow structure constitutes a closed circuit cycle and the cooling speed is fast. At present, this technology has been widely used in aerospace, marine, military, manufacturing, automotive, hardware tools, sports equipment and other industries.

Model	GX-8028N	GX-8050N	GX-80A10N
volume	280L	500L	1000L
Inner dimension	610600 760	800735 850	10001000 1000
Type	（Vertical）
Capacibility carrying	150KG	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	-80°C~-10°C Optional -80°C～60°C
Cooling capacity at -75℃	1kw	1.5kw	2.5kw
Temp. accuracy	±2℃	±2℃	±2℃
Heating power	2kw	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 degrees, no-load, from 60 degrees to -75 degrees 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
	When it is open, the internal circulation fan automatically turns off. The touchscreen 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 degrees)
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
Dimension	11501150 1850	13501300 1850	15501500 2100
Power 380V 50HZ	7KW MAX	11.5KW MAX	15KW MAX
Weight	400kg	500kg	690kg
Optional	High temperature reaches 150degree and temperature accuracy is ±0.5degree；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	Closed circulating oil heating system, no direct electric heating element inside the box, suitable for flammable products test
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 degrees 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）

Gear assembly refrigerator

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