Preparation method of silicon steel self-bonding coating for high-bonding-force motor iron core and motor iron core
A technology of self-adhesive coating and high cohesive force, which is applied in the direction of coating, manufacturing motor generators, and devices for coating liquid on the surface, etc. Use performance, noise increase and other problems, to achieve the effect of good uniformity, reduce use noise, and reduce eddy current loss
Pending Publication Date: 2022-07-29
MAANSHAN IRON & STEEL CO LTD
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Problems solved by technology
[0005] However, the silicon steel self-adhesive coating produced by the existing method has a small adhesive force, and there is a risk of dispersion, which will also increase the noise during the operation of the motor and affect the performance of the motor.
Method used
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preparation example Construction
[0027] A preparation method of a silicon steel self-adhesive coating for a high-adhesion motor iron core, comprising the following steps:
[0028] (1) Use a six-roll coater to coat the surface of silicon steel with a surface roughness Ra of 0.12 to 0.30 μm. The solid content of the coating is 50-70%, and the viscosity is 60-80s;
[0029] (2) Articles;
[0030] (3) High-speed stamping with a stamping speed of 600 times / min;
[0031] (4) Lamination;
[0032] (5) Secondary curing: curing at 215℃~300℃ for 180~300min under the pressure of 3.5~6.0MPa.
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Abstract
The invention discloses a preparation method of a silicon steel self-adhesive coating for a high-adhesion motor iron core and the motor iron core, and the preparation method comprises the following steps: coating the surface of silicon steel with a coating capable of forming the self-adhesive coating, and then carrying out first drying and curing; slitting is conducted; stamping and processing; performing lamination; curing is conducted for 180 min to 300 min at the temperature ranging from 215 DEG C to 300 DEG C under the pressure ranging from 3.5 MPa to 6.0 MPa; the self-adhesive coating for producing the motor iron core has relatively low thickness and relatively high peel strength, can meet the requirements on high rotating speed and high strength of the motor in the fields of new energy, micromotors and the like, and can effectively reduce the eddy current loss of the motor, improve the working efficiency of the motor and reduce the use noise of the motor.
Description
technical field [0001] The invention belongs to the technical fields of motor processing and silicon steel coating, and in particular relates to a preparation method of a silicon steel self-adhesive coating for a high-adhesion motor iron core and a motor iron core. Background technique [0002] Non-oriented silicon steel is mainly used in the manufacture of iron cores in the fields of generators and motors, and is an indispensable and important soft magnetic alloy in industries such as electronics, electric power, transportation and military. During the user's use, the iron core is usually assembled into the iron core by welding, bolting, self-buckling or riveting after slitting and punching. characteristics, etc. Welding, bolt connection, self-buckling, riveting and other fixing methods are all point fixings of silicon steel sheets, and the connection force is not high. For high-speed new energy vehicle drive motors, there is a risk of discrete point connection between si...
Claims
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IPC IPC(8): B05D5/10B05D3/02B05D7/14H02K15/12H02K15/02H02K1/06
CPCB05D5/10B05D3/0254B05D7/14H02K15/12H02K15/02H02K1/06B05D2202/10
Inventor 程国庆施立发陆天林刘青松祁旋徐文祥裴英豪
Owner MAANSHAN IRON & STEEL CO LTD