The effect of cryogenic assembly equipment on the rotors

2024-12-04 09:18:50

In the past, the assembly of motor rotors mainly used hot and cold mounting methods.

1. Hot mounting: By heating the motor rotor, it expands, and then it is assembled on the bearing or journal. This method is simple to operate, but it is easy to cause deformation and damage to the material, affecting the mechanical properties. In addition, hot assembly requires a longer assembly time and is less efficient.

2. Cold installation: the rotor is assembled to the bearing or journal by the press and other equipment at room temperature. The cold loading method does not require heating and does not have a thermal effect on the material, but requires a larger assembly force and a longer assembly time. In addition, cold installation may cause microscopic cracks between mating surfaces and affect assembly quality.

With the development of cryogenic assembly technology, more and more motor manufacturers began to use cryogenic equipment to assemble rotors.

The cryogenic assembly box can achieve a tight fit at lower temperatures, improving assembly quality while avoiding problems caused by hot and cold loading. In addition, cryogenic assembly can also improve the mechanical properties, wear resistance, fatigue resistance and service life of the motor. The performance of modern motor rotors has improved significantly compared with the past.