Amorphous, microcrystalline or nano-crystalline alloy stator iron core for axial magnetic flux motor and manufacture method for stator iron core

A technology of nanocrystalline alloy and axial magnetic flux, which is applied in the manufacture of stator/rotor body, magnetic circuit static parts, magnetic circuit shape/style/structure, etc. Alloy motor iron core process is complex, etc., to improve production efficiency and iron core yield, save resin thermosetting molding treatment, and avoid the effect of soft magnetic performance decline

Active Publication Date: 2012-06-20
ADVANCED TECHNOLOGY & MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The amorphous alloy iron cores made by these two methods have air gaps at the joints, which affect the performance of the iron cores to a certain extent.
In 2004, the American Metgrass patent WO2004/070740 disclosed a method for preparing an amorphous stator core by photolithography and etching. This method is complicated in process and low in efficiency, and is not suitable for mass production.
In 2008, the invention patent CN101286676A of Antai Science and Technology Co., Ltd. disclosed a method for making stator iron cores by first heat-curing them into amorphous blocks and then cutting them as

Method used

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  • Amorphous, microcrystalline or nano-crystalline alloy stator iron core for axial magnetic flux motor and manufacture method for stator iron core
  • Amorphous, microcrystalline or nano-crystalline alloy stator iron core for axial magnetic flux motor and manufacture method for stator iron core
  • Amorphous, microcrystalline or nano-crystalline alloy stator iron core for axial magnetic flux motor and manufacture method for stator iron core

Examples

Experimental program
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Example Embodiment

[0071] Example 1

[0072] The nominal composition of the strip material used to make the axial flux amorphous alloy stator core is Fe 80 Si 9 B 11 (at.%), the thickness is 30±1μm, the width is 140mm, and the surface is flat. The amorphous alloy stator core to be produced has an outer diameter of 180 mm, an inner diameter of 100 mm, a height of 40 mm, a groove depth of 30 mm, and the number of cogging slots is 30. First use the rolling shear equipment to cut the amorphous alloy strip into an amorphous alloy strip coil with a width of 80mm, and then perform a secondary winding of the amorphous alloy strip with a width of 80mm to form a double amorphous alloy thin strip coil stand-by. Use silicon steel sheet with a thickness of 0.5mm to make figure 1 The iron core inner core shown is composed of an annular base 1 with an outer diameter of 180mm and an inner diameter of 100mm and a cylinder 2 with an inner diameter of 100mm and a height of 80mm, in the middle of the cylinder 2 The...

Example Embodiment

[0081] Example 2

[0082] The rolling shearing, grooving, coating, winding and annealing treatment of the amorphous alloy strip are all the same as the process of Example 1. That is, the amorphous alloy stator core produced in Example 1 is subjected to a resin thermal curing treatment again. The specific process is as follows: the amorphous alloy stator core is immersed in epoxy resin in a stainless steel tank, and put into a vacuum box together with the dipping tank to be evacuated to below 1 Pa, and maintained at this vacuum for 30 minutes. Then the vacuum environment was removed, the amorphous alloy iron core was taken out and put into an oven for heat curing treatment at 170°C. After keeping the temperature for 4 hours, the oven was turned off and the amorphous alloy stator iron core was naturally cooled to room temperature. So far, the axial flux amorphous alloy stator iron core treated by resin thermal curing is completed.

[0083] The silicon steel sheet (thickness 0.35m...

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Abstract

The invention discloses an amorphous, microcrystalline or nano-crystalline alloy stator iron core for an axial magnetic flux motor and a manufacture method for the stator iron core. The manufacture method includes the steps: firstly, rolling and cutting a coiled amorphous, microcrystalline or nano-crystalline alloy wide band into an alloy strip coil (6) which is twice as high as that of the finished iron core, then uniformly punching a plurality of strip slots (17) in the middle of the alloy strip coil at intervals with the same equipment, performing insulation coating treatment and further coiling the alloy strip coil on an inner core (24) of the iron core, wherein the strip slots (17) are as same as open slots (26) in width, and the length of each strip slot (17) is twice of the depth of each open slot (26); next, adding an iron core outer-circumference protecting layer on the outer circumference face of the coiled alloy strip coil, then transversely halving the alloy strip coil into two identical alloy iron cores along the axial perpendicular plane of the alloy strip coil; and finally, carrying out high-temperature annealing treatment on the iron cores formed by processing. The stator iron cores prepared by the method are more excellent in performance, and particularly applicable to a high-speed motor, a high-power density motor and a high-torque density motor.

Description

technical field [0001] The invention belongs to the field of magnetic circuit components of motors, and in particular relates to an amorphous, microcrystalline or nanocrystalline alloy stator core for an axial flux motor and a manufacturing method thereof. The stator core is especially suitable for applications requiring high efficiency and energy saving High speed, high power density and high torque density motors. Background technique [0002] The motor is the electrical equipment with the highest power consumption in the world. Improving the efficiency of the motor is of great significance to energy saving, emission reduction, energy shortage and environmental pollution. At present, the improvement of motor efficiency is highly valued by countries all over the world. Many applications require not only high efficiency, but also high power density, high torque density or high speed, such as electric vehicles, aerospace, high-speed compressors, etc. The silicon steel core ...

Claims

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Application Information

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IPC IPC(8): H02K1/16H02K15/02
Inventor 周少雄张广强王立军李山红
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD
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