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Method for Fixing Amorphous Alloy Stator Core and Motor Frame or Cooling Water Jacket

A stator core and amorphous alloy technology, which is applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve the problems of decreased magnetic performance of the iron core, increased iron loss, etc., and achieve the effect of avoiding eddy current loss

Active Publication Date: 2019-05-10
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In practical applications, some researchers press the amorphous alloy stator core directly into the motor frame or cooling water jacket through interference fit, so that the frame or cooling water jacket will exert mechanical stress on the amorphous alloy stator core, causing the core Decrease in magnetic performance, increase iron loss and cause additional vibration and noise

Method used

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  • Method for Fixing Amorphous Alloy Stator Core and Motor Frame or Cooling Water Jacket
  • Method for Fixing Amorphous Alloy Stator Core and Motor Frame or Cooling Water Jacket
  • Method for Fixing Amorphous Alloy Stator Core and Motor Frame or Cooling Water Jacket

Examples

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Embodiment 1

[0039] Cut the amorphous alloy strip Fe83.5B15Cu1.5 into a sheet with a length of 250mm and a width of 140mm, and cut a certain number of 0.2mm thick silicon steel sheets with the same length and width as the amorphous alloy sheet; The alloy flakes and silicon steel sheets are coated with silicate high-temperature glue with a temperature resistance of 500 degrees Celsius on both sides. The coating thickness of the high-temperature glue is less than 1 micron. The concentration of the high-temperature glue is adjusted by adding an absolute alcohol with a concentration of more than 98% to control the coating thickness. The silicon steel sheet is coated on one side only. Next, a plurality of amorphous alloy flakes are stacked into an amorphous alloy cubic block with a thickness of 75 mm in the axial direction. During the lamination process, put four double-sided glued 0.2mm thick silicon steel sheets at each end of the axial direction, and place a single-sided glued silicon steel s...

Embodiment 2

[0052] Mix bisphenol S epoxy resin and diluent benzyl alcohol thoroughly. The volume ratio of epoxy resin and benzyl alcohol is 1:2. Then add curing agent diethylenetriamine-acrylonitrile copolymer. The diluted ring The ratio of oxygen resin to curing agent is 15:1. Then the amorphous alloy Fe 85 B 11 Si 4.0 The powder is thoroughly mixed with the diluted epoxy resin, and the ratio of the amorphous alloy powder to the diluted epoxy resin after adding the curing agent is 100:30. Then, the mixture of the fully mixed amorphous alloy powder and epoxy resin is put into the stator core mold under pressure of 80-100 MPa, and heated to 80 degrees Celsius for curing for 12 hours. The axial length of the molded amorphous silicon alloy stator core 9 is 180 mm, the inner diameter is 160.0 mm, the outer diameter is 260 mm, and 24 cogging slots are evenly distributed.

[0053] When molding an amorphous silicon alloy stator core, three semicircles with a radius of 2.6mm are uniformly distribut...

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Abstract

The invention relates to a method for fixing an amorphous alloy stator core to a motor support or a cooling water jacket, and belongs to the technical field of motor manufacture. The amorphous alloy stator core is fixed to the motor support or the cooling water jacket in the circumferential direction via multiple non-conductive non-magnetic-conductive cylindrical pins; and the motor support or the cooling water jacket internally includes a limiting step, and in the axial direction, one end of the amorphous alloy stator core is fixed by the limiting step, and the other end of the amorphous alloy stator core is limited and fixed by blocking the end portion of the amorphous alloy stator core via multiple radial countersunk screws whose front ends are smooth. According to the method provided by the invention, the stator core makes multi-point contact with the motor support or cooling water jacket in both the axial and the radial directions, the amorphous alloy stator core is prevented from too large pressure and too high pressure intensity locally caused by assembling technology and method, and influence of mechanical stress, caused by assembling, on the magnetic conductive performance of the amorphous alloy stator core is reduced to the minimum.

Description

Technical field [0001] The invention belongs to the technical field of motor manufacturing, and particularly relates to a method for fixing an amorphous alloy stator core and a motor frame or a cooling water jacket. Background technique [0002] Amorphous alloy materials have the advantages of high magnetic permeability and low AC core loss. The application in the field of high-speed motors or multi-pole pairs of high-frequency motors has attracted more and more attention. However, amorphous alloy materials are more sensitive to mechanical stress, and excessive mechanical stress during processing or assembly will greatly reduce the magnetic permeability of amorphous alloy materials. [0003] The stator core of a traditional silicon steel sheet motor is usually stamped with two or more notches in the outer circle of the stator punch. When a certain pressure is applied to the multilayer stator punch in the axial direction, it is welded through the outer circle notch. The way to fix ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/20H02K5/20H02K1/28
CPCH02K1/20H02K1/28H02K5/20
Inventor 刘明基蔡中勤薛志勇康一鸣杨倩倩仵雪鑫张伟华宋天心
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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