Bearing Assembly Freezer

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Introduction of bearing assembly freezer:

Bearings and spindles are important parts in today’s mechanical equipment, mainly used to reduce the mechanical load friction coefficient of the equipment. After traditional heat treatment, the mechanical properties and hardness of bearings and shafts will be improved, but there are still residual internal stress and Austenite, which reduces the fatigue strength and mechanical properties of the material. Our shaft shrinkage cryogenic equipment is not destructive to the material, and can change the internal structure of the workpiece, effectively promote the transformation of retained austenite to martensite and the precipitation of ultrafine carbides, and increase the wear resistance and size of the workpiece Stability, improve service life and strength, and at the same time, the outer dimension of the workpiece will shrink after cooling, thereby creating an assembly gap and achieving the purpose of easy assembly of parts.

Features and advantages of bearing assembly freezer:

The bearing assembly freezer is non-destructive to materials, safe and environmentally friendly in operation, and relatively low in cost. After cryogenic treatment, the stability and wear resistance of the workpiece can be enhanced. Man-machine interface + PLC + module programmable control control method is adopted to observe the temperature change in the box in real time. It has manual and automatic dual operation functions and is easy to operate. The liquid nitrogen dispersed refrigeration technology and temperature control technology make the constant temperature and cooling process of the product uniform. Stable, automatic alarm at the end of heat preservation. The chassis is insulated with high-density polyurethane foam insulation, and the stress-bearing parts are specially reinforced. The box is made of stainless steel, with an exhaust valve at one end, a built-in shroud and a circulation fan, and evenly injected liquid nitrogen to ensure an even temperature in the freezer; The insulation layer of special polyurethane foam can effectively block the heat and cold exchange inside and outside, intelligent man-machine operation interface, German liquid nitrogen solenoid valve. The cryogenic equipment uses liquid nitrogen as the refrigerant, and quickly achieves an ultra-low temperature of -196 degrees in 5 minutes. From room temperature to -196 degrees, the temperature, cooling speed, and holding time can be set arbitrarily, providing a good low-temperature environment for the cold assembly of workpieces.

1. The box is made of stainless steel, and the stressed parts are specially reinforced;

2. The insulation layer is polyurethane foam, which blocks the heat and cold exchange inside and outside the box;

3. There is an exhaust valve at one end of the box;

4. The built-in circulation fan and shroud can evenly disperse and inject liquid nitrogen to ensure the uniformity of the temperature of the freezing chamber;

5. Humanized microcomputer operation interface, convenient for users to use;

6. Equipped with electrical interlock and alarm device;

7. The solenoid valve adopts the German liquid nitrogen supporting cryogenic solenoid valve;

8. The liquid nitrogen transmission pipeline adopts high-vacuum adiabatic transmission pipeline to reduce the loss of liquid nitrogen;

9. After the liquid nitrogen low temperature box equipment and transmission pipeline are kept at low temperature for 1 hour, the temperature of the outer wall of the deep cold box is ≥ 5°C.

The bearing assembly freezer adopts multi-component refrigeration technology of the compressor, and the temperature of deep low temperature can be selected from -60°C, -90°C, -120°C, -160°C, etc., controlled by PLC microcomputer, the control accuracy is 0.1°C, and the volume is 200L~4000L series, load-bearing 500KG/㎡~1000KG/㎡ can be selected according to the requirements. The thickness of the insulation layer of the box body is more than 130mm, which has a good constant temperature effect. The box door has a top-opening door and a side-opening door design. Cold treatment of bearing parts The industrial refrigerator can be used for annealing of bearing parts, martensitic quenching and tempering of bearing parts, cold treatment of bearing parts and other processes, which can improve the hardness, toughness, wear resistance, impact resistance and fatigue resistance of bearing parts. At the same time, it has the function of providing stability and improving service life.

Bearing assembly freezer is widely used in bearing cold treatment, copper sleeve cold treatment, precision parts cold treatment, blade cold treatment, gear cold treatment, drill bit cold treatment, mold cold treatment and other multiple metal material treatment, and has the function of quality control in the metal machinery industry.

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