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Processing technology and applications of anti-drop magnetic steel for permanent magnet motor

A permanent magnet motor and processing technology, applied in the pretreatment surface, metal material coating process, circuit and other directions, can solve the problems of easy peeling of the surface coating, high temperature resistance, poor moisture resistance, short oxidation resistance life, etc. Probability of accidental damage, good resistance to humidity and heat, not easy to fall off

Inactive Publication Date: 2014-06-18
宁波市鄞州大宇星极磁钢厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a permanent magnet motor with high anti-oxidation life and high temperature resistance in order to solve the defects of short anti-oxidation life, poor high temperature resistance and moisture resistance, and easy peeling of the surface coating after the surface treatment of the existing permanent magnet motor. Treatment process of anti-shedding magnetic steel of permanent magnet motor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A treatment process for anti-shedding magnets of permanent magnet motors, the treatment process comprises the following steps:

[0035] a) Surface treatment: immerse the magnet in diesel oil at 20°C for 1 hour to remove rust, oil and sludge on the surface of the magnet, then remove and dry;

[0036] b) Phosphating: immerse the magnetic steel obtained in step a) in the phosphating solution at 20°C for 30 minutes, then take it out and dry it in the air; the pH of the phosphating solution is 2.9; see the components and contents of the phosphating solution Table 1;

[0037] c) Grinding and powder blowing: Grind the magnetic steel obtained in step b) with sandpaper for 10 minutes, then brush the surface of the polished magnetic steel with a brush, and finally blow the surface of the magnetic steel with an air gun;

[0038] d) Paint spraying: Place the magnetic steel obtained in step c) evenly on the screen, the distance between each piece of magnetic steel is 5cm, the conca...

Embodiment 2

[0043] A treatment process for anti-shedding magnets of permanent magnet motors, the treatment process comprises the following steps:

[0044] a) Surface treatment: immerse the magnet in diesel oil at 25°C for 1.5 hours to remove rust, oil and sludge on the surface of the magnet, and then take it out and dry it;

[0045] b) Phosphating: immerse the magnetic steel obtained in step a) in the phosphating solution at 25°C for 40 minutes, then take it out and dry it in the air; the pH of the phosphating solution is 3.2; see the components and contents of the phosphating solution Table 1;

[0046] c) Grinding and powder blowing: Grind the magnetic steel obtained in step b) with sandpaper for 12 minutes, then brush the surface of the polished magnetic steel with a brush, and finally blow the surface of the magnetic steel with an air gun;

[0047] d) Paint spraying: place the magnetic steel obtained in step c) evenly on the screen, the distance between each magnetic steel is 6cm, the...

Embodiment 3

[0052] A treatment process for anti-shedding magnets of permanent magnet motors, the treatment process comprises the following steps:

[0053] a) Surface treatment: immerse the magnet in diesel oil at 30°C for 2 hours to remove rust, oil and sludge on the surface of the magnet, then remove and dry;

[0054] b) Phosphating: immerse the magnetic steel obtained in step a) in the phosphating solution at 30°C for 50 minutes, then take it out and dry it in the air; the pH of the phosphating solution is 3.8; see the components and contents of the phosphating solution Table 1;

[0055] c) Grinding and powder blowing: Grind the magnetic steel obtained in step b) with sandpaper for 15 minutes, then brush the surface of the polished magnetic steel with a brush, and finally blow the surface of the magnetic steel with an air gun;

[0056] d) Paint spraying: place the magnetic steel obtained in step c) evenly on the screen, the distance between each magnetic steel is 7cm, the concave surfa...

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PUM

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Abstract

The invention relates to a processing technology and applications of an anti-drop magnetic steel for permanent magnet motor. The processing technology comprises steps of surface processing, phosphating, polishing, paint spraying, and baking. During the paint spraying process, the faying surface between the magnetic steel and the stator or rotor of a permanent magnet motor is a recessed surface and is not covered by baking varnish, the recessed surface of the magnetic steel is painted with glue, and then the magnetic steel is stuck to the rotor or stator of the permanent magnet motor. The magnetic steel manufactured by the processing technology can tightly adhere to the rotor or stator of permanent magnet motor and thus is not easy to fall off. During the motor operation process, the parts do not rub with each other, thus the problem of part wearing is avoided, and moreover the motor rotor magnetic field is stable. The accidental breakdown rate of motor is greatly reduced by the processing technology.

Description

technical field [0001] The invention relates to the field of permanent magnet synchronous motors, in particular to a treatment process and application of anti-shedding magnetic steel for permanent magnet motors with low shedding rate and anti-oxidation. [0002] Background technique [0003] NdFeB rare earth permanent magnet motors have been widely promoted. They are mainly used in new energy motors such as electric vehicles, wind power generators, CNC machine tool servo motors, and elevator traction machines. Due to the particularity of the working environment and assembly process of permanent magnet motors , The NdFeB magnets used in permanent magnet motors have higher technical requirements for surface anti-oxidation treatment. There are two major problems in the surface treatment of existing permanent magnet motor magnets: 1) The problem of anti-oxidation treatment on the surface of magnets, neodymium There are two main methods of surface treatment for iron boron magnet...

Claims

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Application Information

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IPC IPC(8): C23C22/44B05D3/00B05D7/14H01F41/02
Inventor 俞洪峰
Owner 宁波市鄞州大宇星极磁钢厂
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