Heat treatment method and equipment through rotating magnetic field generated from magnetic parts of an apparatus

A heat treatment method and technology of rotating magnetic field, applied in the direction of magnetic objects, electrical components, circuits, etc., can solve problems such as not meeting technical requirements

Inactive Publication Date: 2008-06-11
徐宝田 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, after such treatment, the magnetic inhomogeneity of each part of the device often reaches about 20%.
This kind of magnetic device, especially the magnetic device with larger cross-section, cannot meet the technical requirements of use

Method used

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  • Heat treatment method and equipment through rotating magnetic field generated from magnetic parts of an apparatus
  • Heat treatment method and equipment through rotating magnetic field generated from magnetic parts of an apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1, a circular device with an outer diameter of Φ80mm made of FeCrCo alloy through high-temperature supersolvation treatment (treatment temperature is 1000-1300°C) is fixed on the front end of the rotating shaft C of the device of the present invention, and is subjected to magnetic field heat treatment. A magnetic field is applied while warming up. The device rotates continuously with the rotation of the axis C in the magnetic field generated by the electromagnet A. The rotation speed is 10-30 rpm, the heat treatment temperature is about 600-700°C, the magnetic field strength is 2000-3000Oe, and the holding time is 1-2 hours. After the treatment, the device was cooled out of the furnace, and tempered at 500-600°C. The magnetic flux of the three products was tested. The inhomogeneity is shown in Table 1:

[0011] serial number

ΔΦ after magnetic stabilization

(%)

ΔΦ after high temperature

(%)

ΔΦ after low temperature

(%) ...

Embodiment 2

[0014] Embodiment 2, the device is the ring that the diameter that material AlNiCo or FeCoV alloy is made is Φ 100mm, carries out magnetic field heat treatment with the device of the present invention, and the rotating speed of axis C is 30-60 rev / min, adds magnetic field when heating up, and intensity is 1000- 2000Oe, the heat treatment temperature is 700-850°C, and the holding time is 1-2 hours. The uniformity of the magnetic flux after the device is magnetized is similar to the results in Table 1 (the details are omitted).

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Abstract

A heat treating technology of magnetic device in a rotating magnetic field features that after a maganetic device is fixed to a rotary axle driven by a motor, it is arranged in a heating furnace and a magnetic field for magnetizing it uniformly.

Description

technical field [0001] The invention belongs to the technical field of magnetic devices, and in particular relates to a magnetic field heat treatment method and device for magnetic devices. Background technique [0002] At present, the traditional magnetic field heat treatment at home and abroad is to place the device in a furnace with a magnetic field for static heat treatment, and to improve the magnetic properties of the device through a certain magnetic field and heat treatment temperature, such as magnetic devices processed by AlNiCo, FeCrCo, FeNi alloys, etc. use this method. However, after such treatment, the magnetic inhomogeneity of each part of the device often reaches about 20%. Such magnetic devices, especially those with larger cross-sections, cannot meet the technical requirements of use. Contents of the invention [0003] The object of the present invention is to provide a magnetic field heat treatment method and device for a magnetic device with high magn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/04H01F13/00
Inventor 徐宝田黄佩娣
Owner 徐宝田
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