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A method for impregnating motor coils in motor production

A coil and dipping technology, applied in the manufacture of motor generators, electric components, electromechanical devices, etc., can solve the problems of uneven paint film on the surface of motor coils, affecting the performance and quality of motor coils, and imperfect dipping methods, etc. The surface of the paint film is uniform, the paint dipping process is perfect, and the paint is firmly peeled off.

Active Publication Date: 2021-07-30
LUAN QIANGLI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of motor production, the method of impregnating the motor coil is a relatively important process in the preparation of the motor coil. The motor coil after dipping not only improves the insulation strength and moisture-proof performance, but also improves its heat resistance and heat dissipation, and can also improve the insulation performance. Mechanical properties, chemical stability, thermal conductivity, heat dissipation effect and aging delay, poor paint dipping effect will directly lead to the quality and safety performance of the motor coil, such as the phenomenon of paint peeling off and exposed wires, which will cause inter-turn short circuit. Cause safety hazards, directly affect the quality of products
[0003] At present, the existing paint dipping method is not perfect, and the paint film on the surface of the motor coil after dipping paint is uneven, and wrinkles, cracks and other phenomena often appear, thus affecting the overall performance and quality of the motor coil

Method used

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  • A method for impregnating motor coils in motor production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for impregnating paint for motor coils for motor production, comprising the steps of:

[0026] S1, 4kg 8411 solvent-free epoxy resin, 10kg amino-modified alkyd resin, 1kg 100-mesh nano fly ash, 1kg 150-mesh nano-diatomite, 0.1kg 100-mesh sepiolite fiber with a diameter of 300-500nm Mix powder, 20kg diluent, 15kg propylene glycol methyl ether acetate, 3kg release oil, and 1kg polyvinylpyrrolidone evenly to obtain an immersion solution;

[0027] S2. Winding the motor coil, then raising the temperature of the wound motor coil from room temperature to 140°C at a heating rate of 10°C / h, keeping it warm for 3 hours, and then cooling down to 50°C to obtain a pre-baked motor coil;

[0028] S3. Place the obtained pre-baked motor coil in the immersion solution for varnish immersion by using a continuous varnish immersion process, and dry to obtain the varnish immersion motor coil;

[0029] During the continuous dipping process, the immersion cycle time is 6min, the work...

Embodiment 2

[0031] A method for impregnating paint for motor coils for motor production, comprising the steps of:

[0032] S1, 12kg 8411 solvent-free epoxy resin, 5kg amino-modified alkyd resin, 2kg 150 mesh nano fly ash, 0.2kg 100 mesh nano diatomite, 0.5kg 150 mesh, sepiolite with a diameter of 300-500nm Mix fiber powder, 10kg diluent, 24kg propylene glycol methyl ether acetate, 1kg release oil, and 2kg polyvinylpyrrolidone evenly to obtain an immersion solution;

[0033] S2. Winding the motor coil, and then raising the temperature of the wound motor coil from room temperature to 120° C. at a heating rate of 15° C. / h, keeping it warm for 2 hours, and then cooling down to 60° C. to obtain a pre-baked motor coil;

[0034] S3. Place the obtained pre-baked motor coil in the immersion solution for varnish immersion by using a continuous varnish immersion process, and dry to obtain the varnish immersion motor coil;

[0035] During the continuous dipping process, the immersion cycle time is 4...

Embodiment 3

[0037] A method for impregnating paint for motor coils for motor production, comprising the steps of:

[0038] S1, 6kg 8411 solvent-free epoxy resin, 8kg amino-modified alkyd resin, 1.2kg 120 mesh nano fly ash, 0.8kg 140 mesh nano diatomite, 0.2kg 120 mesh sea foam with a diameter of 100-200nm Stone fiber powder, 17kg diluent, 18kg propylene glycol methyl ether acetate, 2.5kg release oil, 1.3kg polyvinyl pyrrolidone are mixed uniformly to obtain the immersion solution;

[0039] S2. Winding the motor coil, then raising the temperature of the wound motor coil from room temperature to 135°C at a heating rate of 11.5°C / h, keeping it warm for 2.6h, and then cooling down to 56°C to obtain a pre-baked motor coil;

[0040] S3. Place the obtained pre-baked motor coil in the immersion solution for varnish immersion by using a continuous varnish immersion process, and dry to obtain the varnish immersion motor coil;

[0041] During the continuous dipping process, the immersion cycle time...

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Abstract

The invention discloses a method for dipping a motor coil for motor production. , diluent, propylene glycol methyl ether acetate, release oil, and dispersant are evenly mixed to obtain immersion liquid; winding the motor coil, and then heating the wound motor coil from room temperature to 120-140 ℃, and the heating rate is 10-15 ℃ / h, keep the temperature for 2-3 hours, and then lower the temperature to 50-60 ℃ to obtain a pre-baking motor coil; the obtained pre-baking motor coil is placed in an immersion liquid by a continuous dipping process for dipping, and drying is used to obtain a dipping motor coil; In the continuous dipping process, the immersion cycle time is 4‑6min, the workpiece preheating temperature is 110‑118℃, the baking temperature is 125‑132℃, and the baking time is 1‑2h.

Description

technical field [0001] The invention relates to the technical field of motor production, in particular to a motor coil impregnation method for motor production. Background technique [0002] In the process of motor production, the method of impregnating the motor coil is a relatively important process in the preparation of the motor coil. The motor coil after dipping not only improves the insulation strength and moisture-proof performance, but also improves its heat resistance and heat dissipation, and can also improve the insulation performance. Mechanical properties, chemical stability, thermal conductivity, heat dissipation effect and aging delay, poor paint dipping effect will directly lead to the quality and safety performance of the motor coil, such as the phenomenon of paint peeling off and exposed wires, which will cause inter-turn short circuit. Cause safety hazards, directly affect the quality of products. [0003] At present, the existing paint dipping method is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K15/12H02K15/10C09D163/00C09D167/08C09D139/06C09D191/00C09D7/61
CPCC08K2201/003C08K2201/011C08K2201/014C08L2205/035C09D163/00C09D7/61C09D7/70H02K15/105H02K15/12C08L67/08C08L39/06C08L91/00C08K13/04C08K7/26C08K7/10
Inventor 孙平赵贤福杨兆阳刘翀刘月明
Owner LUAN QIANGLI MOTOR CO LTD
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