Magnetic material for motor slot wedge

Abstract

The invention discloses a magnetic material for a motor slot wedge. The magnetic material comprises the following components in part by weight: 60 to 80 parts of epoxy resin, 60 to 80 parts of solvent, 55 to 65 parts of 3301 resin, 4 to 6 parts of ZD-1090 liquid modified aromatic amine epoxy resin curing agent, 1 to 2 parts of plasticizer, 180 to 200 parts of reduced iron powder and 90 to 110 parts of alkali-free glass fiber.

Description

technical field [0001] The invention relates to the technical field of motor preparation, in particular to a magnetic material for a slot wedge of a motor. Background technique [0002] As we all know, due to the existence of slotted teeth in asynchronous motors, the inhomogeneity of air gap permeance is brought about, which causes permeance harmonics, thereby increasing the surface loss of the motor rotor and the loss of rotor tooth pulse vibration. Since this loss is generated on the rotor, the squirrel-cage motor, especially the cast aluminum rotor motor, is more serious. The iron loss and rotor tooth pulse vibration iron loss generated by the stator air gap permeance harmonics on the rotor surface of this motor are more than twice the basic iron loss of the motor. Due to this increase in iron consumption, not only the efficiency of the motor is reduced, but also adverse phenomena such as increased temperature rise, increased noise, and deteriorated starting characterist...

AI Technical Summary

Problems solved by technology

Using triethylenetetramine as epoxy resin curing agent has the disadvantage of too short operation time, and often the mixed magnetic material is too late to wipe and press into the groove and the surface is hardened and cannot be used.