Wuxi Guanya Refrigeration Technology co., ltd

Rotary shaft freezing process in new energy automobile motor assembly

As the market for new energy vehicles has gradually expanded, the new energy motor manufacturing industry has also grown. Then, for the motor manufacturer, the rotor into the core process during the motor assembly process is particularly important, which determines whether the shaft will bend during operation, which affects the service life of the motor.

When the motor is used for the shaft and rotor set, the rotor and the shaft are generally used with a large interference fit. When the rotor core is hot-sleeve, the operating temperature of the iron core and the ribbed shaft (the temperature is especially different when the temperature is different, and the temperature is very critical); before the operation, the rotor needs to be preheated, but due to the rotor Insulation materials are generally used in Class F insulation. The preheating temperature of the rotor can only reach 150 °C. Therefore, only the rotor heating can not achieve the purpose of gap setting. It is often necessary to use special hydraulic equipment to realize the operation. In this way, not only will it affect the quality of its fit, it may even damage its mechanical strength.

A method for processing a rotor core of a motor, comprising the steps of: laminating a rotor core; heating the rotor core into an oven to 200 ° C for 2.5 hours; and freezing the shaft through a freezing device to - 120 ° C, heat preservation for 25 minutes; take the rotor core out of the oven, place it in the center of the hydraulic press, and simultaneously insert the shaft into the core, if necessary, pressurize it in place; match the arc key and the key, heat the core end Support plate and weld.

There is such a compressor to cool the heating device while cooling the motor. The LNEYA KRY-4 series is used for lifting temperature and constant temperature control in new energy motor assembly. It is especially suitable for heat dissipation and heat release process control during testing. The temperature range is -40 °C ~ + 120 °C. For the charge management of the power battery, the precision temperature control device for testing the permanent magnet synchronous motor, the switched reluctance motor, the asynchronous motor and its controller can realize the local + remote control mode through the liquid crystal control panel. The entire system is a fully enclosed system. There is no oil mist at high temperatures, while low temperatures do not absorb moisture from the air. The system does not increase pressure due to high temperatures during operation and automatically replenishes the heat medium at low temperatures.
Related News
  • LNEYA Is Exhibiting At Achema 2018

    LNEYA Is Exhibiting At Achema 2018

    January 11, 2018​The LNEYA Group will participate in the ACHEMA -World Forum and Leading Show for the Process Industries,Frankfurt am Main, Germany.view
  • Approaching LNEYA 5 Main Products

    Approaching LNEYA 5 Main Products

    January 11, 2018Industrial Chiller:Industrial Chiller varies from dynamic temp. Special Chiller:Special Chiller consist of Multi-reactor chiller (TCU).Environmental Chamber:The test object is connected to a testing adapter. Industrial Freezer:Industrial freezer consist oview
  • The Analysis Of Ultra Low Freezer'S Price

    The Analysis Of Ultra Low Freezer'S Price

    July 4, 2018What are the characteristics and functions of ultra low freezer: 1. Ultra low freezer can prevent the precision of machine equipment from being influenced by the change of oil temperature in the proce...view
  • The Application of Cold Plate Freezer

    The Application of Cold Plate Freezer

    July 4, 2018The refrigeration system of cold plate freezer adopts secondary super-cooler technology with the rapid refrigeration and low limiting temperature. It uses imported brand name semi-hermetic piston comp...view
  • 2018 Automotive Testing Expo

    2018 Automotive Testing Expo

    September 11, 2018Automotive Testing Expo 9.25-9.27view
  • The Analysis Of How To Maintain The Low Temperature Circulator In Daily Life

    The Analysis Of How To Maintain The Low Temperature Circulator In Daily Life

    July 4, 2018Guanya is a leading role in heating cooling circulator. It provides the customers with proposal and technology of controlling the cold and heat, temperature control system with stable property, extend...view
Related Products
  • SLJ -110℃~-150℃

    SLJ -110℃~-150℃

    January 11, 2018Temperature ranges from - 5 ~ - 150 ℃, can meet different temperature; Adopt environmental protection refrigerants; Famous brand semi-closed piston compressor, semi-closed bipolar piston compressor, semi-hermetic screw compressor, main brand are BOCK.view
  • Single Fluid Heat Transfer System SR

    Single Fluid Heat Transfer System SR

    April 10, 2018Working temperature range from -25℃to 200℃, other temperature range need to set to the widest temperature range(-50℃to 250℃) Centralized control of 2~20 reactors, each reactor's and jacket temperature can be set independently. One system control multipleview
  • Reactor Temperature System ZLF

    Reactor Temperature System ZLF

    April 10, 2018A set of cooling heat exchanger, heat exchanger, through proportional adjusting valve control cold heat into the heat exchanger, then through the uniform medium input to the reactor jacketed to do heat exchange and temp. Control, system has inside expansiview
  • LT -45℃~30℃

    LT -45℃~30℃

    April 10, 2018Low Temperature Cooling Chiller LT model: LT-5018N,LT-5040N,LT-5062N,LT-5090N,LT-50A1N,LT-50A2N; Medium Temperature Range: -45℃~30℃. ASET multifunctional controller, control outlet temperature of water tankview
  • TES -45℃~250℃

    TES -45℃~250℃

    February 28, 2019-45℃~+200℃ 2.5kW~25kW ±0.3℃view
  • TES -85℃~200℃

    TES -85℃~200℃

    February 28, 2019Temperature control range:-85 ° C ~ 200 ° CPower range:2.5kW~25kWTemperature control accuracy:±0.3°CModelTES-8525WTES-8555WTES-85A10WTES-85A15WTES-85A25WTemp. Range-85℃~200℃-85℃~200℃-85℃~200℃-85℃~200℃-85℃~200℃Heating P...view
Tel: + 86 18751545184
E-mail: sales@cnzlj.com
Add: No.203, Hongyun Road, Hongshan Street, Optoelectronics Park, Xinwu District, Wuxi City, Jiangsu Province, China
code chat