Preparing method for amorphous alloy stator iron core of high-speed electric machine

An amorphous alloy and stator core technology, which is applied in the manufacture of inductors/transformers/magnets, the manufacture of stator/rotor bodies, circuits, etc., can solve the problems of complex shapes, single non-chips have no rigidity, and complex molding processes, etc. Achieve low operating temperature, environmental protection and easy control, short process time

Active Publication Date: 2008-10-15
ADVANCED TECHNOLOGY & MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The surface of the sheet obtained by this method is smooth and the shape is neat, but because the single

Method used

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  • Preparing method for amorphous alloy stator iron core of high-speed electric machine
  • Preparing method for amorphous alloy stator iron core of high-speed electric machine
  • Preparing method for amorphous alloy stator iron core of high-speed electric machine

Examples

Experimental program
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Embodiment 1

[0040] The Fe-based amorphous alloy strip with nominal composition Fe80Si9B11(at.%) is prepared by planar casting strip method, the strip thickness is 30±1μm, the width is 50mm, and the surface is smooth. First cut the 50mm wide amorphous alloy strip into multiple 110mm long and identically shaped sheets, then stack the amorphous alloy sheets into an amorphous rod with a width of 50mm, a length of 110mm and a height of 66mm, and then place the amorphous rod on the Anneal in a bell-type furnace with nitrogen gas in the bell-type furnace. The annealing process is as follows: 1) heating the amorphous rod to 380° C.; 2) keeping it at about 380° C. for 90 minutes; 3) cooling with the furnace. The annealed amorphous rod was immersed in an impregnating solution with a weight percentage of epoxy resin and acetone of 1:5 for 1 hour, and then kept at 180°C for two hours to solidify. Finally, the amorphous rod was cut into an outer diameter of 45.5 mm by wire cutting. mm, an 18-slot sta...

Embodiment 2

[0048] In order to improve the magnetic induction intensity at the working point of the amorphous stator core, according to the size of the magnetic field heat treatment furnace and the size of the amorphous rod, the following two methods of magnetic field annealing are adopted:

[0049] (1) Magnetic field annealing along the length of the rod

[0050] The schematic diagram of the magnetic field annealing method along the rod length direction is shown in Figure 6 As shown, the amorphous rod is placed in a constant temperature magnetic field heat treatment furnace along the direction in which the length direction and the magnetic field direction are consistent.

[0051] The 50mm wide and 110mm long amorphous wafers obtained by cutting Fe80Si9B11 (at.%) iron-based amorphous alloy strips are stacked into 66mm high amorphous rods, sharing 2375g of amorphous rods, and the amorphous rods are carried out in a nitrogen atmosphere. Annealing, the annealing process is: 1) heating up to ...

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Abstract

The invention aims at providing a method for preparing a noncrystalline alloy stator core with low loss and regular and complete appearance which is applied to high-speed electrical machines. The preparation method comprises the following steps of incising noncrystalline alloy belt material to form a plurality of noncrystalline alloy sheets with preset length, laminating the noncrystalline alloy sheets to form laminated rods of the noncrystalline alloy sheets with preset thickness, annealing the laminated rods, soaking the annealed laminated rods in a binder, solidifying the laminated rods after being soaked, and cutting the laminated rods according to preset shape and size to form the stator core with needed shape and size. Therefore, the noncrystalline stator core can be prepared needing one-time final cutting only.

Description

technical field [0001] The invention relates to a method for preparing an iron core, in particular to a method for preparing an amorphous alloy stator iron core for a high-speed motor. Background technique [0002] A large number of applications in current technology, such as high-speed machine tools, aerospace engines and actuators, spindle motors for magnetic disks and optical disk drives for data storage in computers and other microelectronic devices, require motors that can operate at high speeds. [0003] High rotational speed requires high frequency to achieve, the traditional silicon steel sheet iron core material has too high iron loss, which causes the iron core to overheat and become unusable when the frequency is higher than 300Hz. Permalloy reduces the saturation induction at high frequency (0.6-0.9T of permalloy, or less like 1.8-2.0T of ordinary silicon steel), which makes it inevitable to increase the size of magnetic components composed of permalloy. [0004...

Claims

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Application Information

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IPC IPC(8): H02K15/02H01F41/02
Inventor 卢志超李山红李德仁周少雄
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD
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