CN201345271Y - Device for removing micromagnets from ground Nd-Fe-B product - Google Patents
Device for removing micromagnets from ground Nd-Fe-B product Download PDFInfo
- Publication number
- CN201345271Y CN201345271Y CNU2008201246598U CN200820124659U CN201345271Y CN 201345271 Y CN201345271 Y CN 201345271Y CN U2008201246598 U CNU2008201246598 U CN U2008201246598U CN 200820124659 U CN200820124659 U CN 200820124659U CN 201345271 Y CN201345271 Y CN 201345271Y
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- China
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- iron boron
- neodymium iron
- hollow core
- ground
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- Expired - Lifetime
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Abstract
A device for removing micromagnets from a ground Nd-Fe-B product is characterized in that the device comprises a demagnetizing coil with a hollow core, wherein, the demagnetizing coil is electrically connected with a ferromagnetic switch, a ground Nd-Fe-B product to be subjected to micromagnet removal is accommodated in the demagnetizing coil with a hollow core, and the demagnetizing coil with a hollow core has a power frequency alternating magnetic field. Furthermore, the device can comprise an auxiliary control and protection circuit. The utility model has the beneficial effect of removing the micromagnets from a ground Nd-Fe-B product in an efficient, safe and energy-saving manner.
Description
Technical field
The utility model relates to a kind of device of removing the little magnetic in neodymium iron boron product mill processing back.
Background technology
Neodymium iron boron is a kind of strong permanent magnet material, is magnetized easily, but is difficult to demagnetization.When the surface ground, the grinding machine magnetic-disc magnetized neodymium iron boron, and with having gone up faint magnetic, it is many unfavorable to have brought for later electroplating technology, seriously affects electroplating quality.
In the prior art, adopt electric furnace to reach the demagnetization purpose by smoking for a long time under 150 degrees centigrade temperature, consequently, time consumption and energy consumption causes the product surface oxidation again easily again, and has reduced the performance of product.
Chinese patent application No.200510009811.9 discloses a kind of convergent oscillation type demagnetization device; Chinese patent application No.200710114049.X discloses a kind of demagnetizer of electromagnet; Chinese patent application No.90219354.6 discloses the efficient demagnetizer of a kind of frame.Yet, in field these methods of being all of no use of neodymium iron boron mill product processing back demagnetization.
Summary of the invention
The purpose of this utility model provides a kind of device of removing the little magnetic in neodymium iron boron product mill processing back, and the product after adding with the assurance mill can be eliminated little magnetic after this device is handled, and safe and effective.
For solving the problems of the technologies described above, the technical scheme that the utility model adopted is as follows: a kind of device of removing the little magnetic in neodymium iron boron product mill processing back is provided, it is characterized in that this device comprises a hollow core degaussion coil, it is electrically connected with ferromagnetic switch; Desire is eliminated the neodymium iron boron mill converted products of little magnetic in this hollow core degaussion coil; And this hollow core degaussion coil has the power frequency alternating magnetic field.
Preferably, further comprise attached control, protective circuit.
The beneficial effects of the utility model are: can efficiently, safely, energy-conservationly remove the little magnetic after neodymium iron boron mill product is processed.
Description of drawings
Fig. 1 is principle of the present utility model and schematic diagram;
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.
As shown in Figure 1, mainly comprise ferric induction switch J1 and hollow degaussion coil J2 according to the little magnetic device in a kind of removal neodymium iron boron mill processing back of the present utility model.
As follows according to the little magnetic device operating procedure in a kind of removal neodymium iron boron mill processing back of the present utility model: in step 101, ferromagnetic switch J1 connects; Afterwards, J2 begins energising work at step 102 hollow core degaussion coil, thereby produces alternating magnetic field; In step 103, make the little magnetic that is placed on the neodymium iron boron mill converted products among the hollow degaussion coil J2 eliminate.
Should be understood that these embodiment only are used to illustrate the utility model, and be not used in restriction scope of the present utility model.In addition, should be understood that those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, yet these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Claims (2)
1. a device of removing the little magnetic in neodymium iron boron product mill processing back is characterized in that this device comprises a hollow degaussion coil, and it is electrically connected with ferromagnetic switch; Hold desire in this hollow core degaussion coil and eliminate the neodymium iron boron mill converted products of little magnetic; And this hollow core degaussion coil has the power frequency alternating magnetic field.
2. the device of the little magnetic in removal neodymium iron boron product mill according to claim 1 processing back is characterized in that, further comprises attached control, protective circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201246598U CN201345271Y (en) | 2008-12-16 | 2008-12-16 | Device for removing micromagnets from ground Nd-Fe-B product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201246598U CN201345271Y (en) | 2008-12-16 | 2008-12-16 | Device for removing micromagnets from ground Nd-Fe-B product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201345271Y true CN201345271Y (en) | 2009-11-11 |
Family
ID=41276857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201246598U Expired - Lifetime CN201345271Y (en) | 2008-12-16 | 2008-12-16 | Device for removing micromagnets from ground Nd-Fe-B product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201345271Y (en) |
-
2008
- 2008-12-16 CN CNU2008201246598U patent/CN201345271Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091111 |
|
| CX01 | Expiry of patent term |