With the rapid development of China's motor industry, the state and society are paying more and more attention to motor efficiency, and the requirements for motor efficiency standards are becoming higher and higher. Insulation treatment of three-phase asynchronous motor punches has become an inevitable trend. Next, Dalan Motor manufacturers will take you to see the requirements and methods of insulation treatment of punching discs.
1. Insulation treatment requirements
(1) With sufficient insulation resistance value, taking the three-phase asynchronous motor rotor punch as an example, the insulation resistance value is greater than 20;
(2) The insulating layer should have sufficient mechanical strength, a certain adhesion, and will not be damaged during transportation and stacking.
(3) The insulation layer should be uniform and thin to ensure a high load factor; there should be as little shrinkage as possible to avoid loosening the core during operation.
(4) It should have better moisture resistance, higher heat resistance and corrosion resistance.
(5) The performance is stable. In the long-term operation of the three-phase asynchronous motor, the characteristics of the insulation layer remain basically unchanged.
(6) The insulation treatment method should be simple, reliable and inexpensive.
(7) Good punching property is beneficial to die punching.
2. Insulation treatment method
The insulation treatment method of the hedge sheet used in the motor industry, one is painting, the other is oxidation treatment.
(1) Paint treatment: It is divided into two types. One is that the silicon steel sheet is directly supplied by the silicon steel sheet production plant when the silicon steel sheet is coated with insulating paint, and then punched. The other is to apply insulating paint after punching. Comparing the two methods, the latter method is better. Paint first and then punch. First, it causes waste of insulating paint (the corners, grooves and other parts that do not need to be painted have paint), and second, the punched cut surface is not painted.
(2) Oxidation treatment of punching tablets
After punching, the special equipment is used for oxidation treatment.
----- Responsible Editor: Dalan Oil Pump Motor 02-Procurement Consultant
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