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Magnet for micro-electronic water pump rotor and preparation method thereof

A technology of electronic water pump and manufacturing method, which is applied in the manufacture of stator/rotor body, permanent magnet manufacturing, inductor/transformer/magnet manufacturing, etc. It can solve the problems of acid and alkali resistance, solvent resistance and oxidation resistance, and insufficient magnetic properties, etc. problem, to achieve the effect of improving affinity, reducing volume and improving work efficiency

Inactive Publication Date: 2018-06-29
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] The purpose of the present invention is to solve the disadvantages of the current microelectronic water pump rotor magnets that are not excellent enough in acid and alkali resistance, solvent resistance, oxidation resistance, and magnetic properties, so as to meet the stringent requirements of the microelectronic water pump, and provide a Acid and alkali resistance, solvent resistance, oxidation resistance, magnetic properties, small size, light weight, and high efficiency magnets for rotors of miniature electronic water pumps

Method used

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  • Magnet for micro-electronic water pump rotor and preparation method thereof
  • Magnet for micro-electronic water pump rotor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A magnet for the rotor of a miniature electronic water pump, including a magnet body, the magnet body is an injection-molded polyphenylene sulfide PPS-NdFeB magnet; the magnetic energy product of the magnet body is 6.3MGOe; the outer surface of the magnet body is treated by plasma surface modification A low-temperature plasma medium layer with a thickness of 80 nm is formed, and a parylene vacuum vapor-phase deposition layer with a thickness of 200 μm is formed on the outside of the low-temperature plasma medium layer by vacuum vapor deposition on the magnet body.

[0043] Specific preparation method:

[0044] (1) Select the commercially available injection molding polyphenylene sulfide PPS-NdFeB pellets (brand TRP-N760, magnetic energy product 6.3MGOe), use the injection molding machine produced by Arburg, Germany, and inject at the injection temperature of 310-330 °C Injection-molded polyphenylene sulfide PPS-NdFeB water pump rotor magnet to form the magnet body;

[...

Embodiment 2

[0049] A magnet for the rotor of a miniature electronic water pump, including a magnet body, the magnet body is an injection-molded polyphenylene sulfide PPS-NdFeB magnet; the magnetic energy product of the magnet body is 6.3MGOe; the outer surface of the magnet body is treated by plasma surface modification A low-temperature plasma medium layer with a thickness of 120 nm is formed, and a parylene vacuum vapor-phase deposited layer with a thickness of 300 μm is formed outside the low-temperature plasma medium layer by a vacuum vapor deposition method on the magnet body.

[0050] Specific preparation method:

[0051] (1) Select commercially available injection molding PPS-NdFeB granules (brand TRP-N760, magnetic energy product 6.3MGOe), use the injection molding machine produced by Arburg, Germany, and inject injection molding PPS- Magnet for NdFeB water pump rotor, forming the magnet body;

[0052] (2) On the outer surface of the (1) injection molded magnet body, a plasma med...

Embodiment 3

[0056] A magnet for the rotor of a miniature electronic water pump, including a magnet body, the magnet body is an injection-molded polyphenylene sulfide PPS-NdFeB magnet; the magnetic energy product of the magnet body is 6.3MGOe; the outer surface of the magnet body is treated by plasma surface modification A low-temperature plasma medium layer with a thickness of 60 nm is formed, and a parylene vacuum vapor-phase deposition layer with a thickness of 100 μm is formed outside the low-temperature plasma medium layer by a vacuum vapor deposition method on the magnet body.

[0057] Specific preparation method:

[0058] (1) Select commercially available injection molding PPS-NdFeB granules (brand TRP-N760, magnetic energy product 6.3MGOe), use the injection molding machine produced by Arburg, Germany, and inject injection molding PPS- Magnet for NdFeB water pump rotor;

[0059] (2) On the outer surface of (1) the injection molded magnet body, a plasma medium layer is formed by lo...

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Abstract

The invention discloses a magnet for a micro-electronic water pump rotor. The magnet comprises a magnet body, and the magnet body is injection molding polyphenylene sulfide PPS-neodymium iron boron magnet; a low-temperature plasma dielectric layer is formed on the outer surface of the magnet body through plasma surface modification treatment, a poly-p-xylene vacuum gas phase deposition layer is formed outside the low-temperature plasma dielectric layer of the magnet body through a vacuum gas phase deposition method. The invention further discloses a preparation method of the magnet for the micro-electronic water pump rotor. The magnet for the micro-electronic water pump rotor is more excellent in acid-base resistance, solvent resistance, oxidation resistance and magnetic performance, smallin size, low in mass, high in working efficiency, and capable of meeting the requirement for the severe working environment of a micro-electronic water pump.

Description

technical field [0001] The invention relates to the technical field of miniature electronic water pumps, in particular to a magnet for a rotor of a microelectronic water pump and a preparation method thereof. Background technique [0002] In recent years, with the vigorous development of turbocharged vehicles and the continuous popularization of new energy vehicles, micro electronic water pumps used as turbochargers and battery pack cooling have developed rapidly. At present, the micro electronic water pump mainly adopts a permanent magnet DC motor, and the rotor adopts an injection-molded magnet with high dimensional accuracy and high mechanical strength. [0003] Injection molding magnet is a polymer-based composite permanent magnet material made by uniformly mixing magnetic powder (ferrite, NdFeB, SmFeN, SmCo, etc.) with nylon, polyphenylene sulfide and other binders, granulating, and then injection molding. , is an important branch of permanent magnet materials. There ...

Claims

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Application Information

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IPC IPC(8): H01F7/02H01F41/02H02K1/02H02K15/03
CPCH01F7/0231H01F41/026H02K1/02H02K15/03
Inventor 何国栋金志洪丁卫卫易潍
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD
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