Liquid nitrogen freezing assembly is suitable for containing parts (such as planet carrier, torsion arm, etc.). If the parts that cannot be heated or heated can cause part accuracy, material structure change, and affect its mechanical properties, the contained parts (such as pins, elastic support shafts) can Assembly of frozen interference fittings. Liquid nitrogen freezing assembly is suitable for various hot work molds, cold work molds assembly, various gearboxes, gearbox and gear assembly of precision gears, assembly of precision mechanical parts, various types of motor stators, rotor assemblies, automotive parts, and engine parts.
The cold mounting method is suitable for containing parts (such as planetary carriers, torsion arms, etc.). If the parts that cannot be heated or heated can cause part accuracy, material structure changes, and affect their mechanical properties, the contained parts (such as pins, elastic support shafts) can be frozen Assembly of interference fits.
When the hole parts are large or irregular in shape, and the pressed parts are small, the cold fitting can be used when it is difficult to implement the heating hole method.
The specific method is to cool the contained part at low temperature to reduce its size, and then install it into the part with holes.
In the hot-packing process, it is necessary to heat and raise the base hole parts, and then cool them in the air. This process is equivalent to performing a low-temperature annealing treatment on the parts, which reduces the hardness and strength of the parts. Cold assembly is equivalent to once cold processing the part. After cold processing, the following advantages can be obtained:
a. The austenite is reduced, which can make the product permanent.
b, hardness increase and its averaging;
c.Improve the performance of machinery;
d. Size stabilization;
e, increasing magnetic properties;
f. Enhanced abrasion resistance.
Thereby improving efficiency and reducing labor intensity
Model | Inside size ( L×W×H ) | Outside dimensions ( L×W×H ) | Volume ( L ) | powder |
NRD-4000L | 4000×1000×1000 | 4800×1700×1550 | 4000 | 380V |
NRD-9000 | 6000×1500×1000 | 6800×2300×1550 | 9000 | 380V |
NRD-12000 | 8000×1500×1000 | 8800×2300×1550 | 12000 | 380V |
NRD-24000 | 12000×2000×1200 | 8800×2300×1550 | 24000 | 380V |
Nuoruida (Tianjin) science and Technology Co., Ltd. is committed to research, development, and sales of liquid nitrogen cryogenic equipment. Using European and American technology, we provide a variety of equipment. The main equipment is liquid nitrogen equipment, cryogenic furnace, cryogenic processing equipment, low temperature assembly equipment, cryogenic assembly equipment, and so on.
