CN212724877U - Composite superposed magnetic field device for preparing high-performance rare earth permanent magnet - Google Patents
Composite superposed magnetic field device for preparing high-performance rare earth permanent magnet Download PDFInfo
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- CN212724877U CN212724877U CN202021241792.9U CN202021241792U CN212724877U CN 212724877 U CN212724877 U CN 212724877U CN 202021241792 U CN202021241792 U CN 202021241792U CN 212724877 U CN212724877 U CN 212724877U
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Abstract
The utility model discloses a compound stack magnetic field device of preparation high performance tombarthite permanent magnetism, include the direct current solenoid by direct current magnetic field power control and the pulse solenoid by pulse magnetic field power control, the pulse solenoid embeds in the inside of direct current solenoid, and the pulse solenoid sets up along the length direction of direct current solenoid. The utility model discloses a pulse and direct current solenoid carry out the complex and obtain superimposed magnetic field, the magnetic field that the pulsed magnetic field produced and is up to 6T carries out the premagnetization to the magnetic, then utilize 2T's direct current magnetic field to keep the magnetization degree to the powder, can improve the magnetization orientation degree of powder greatly, the combined action in high magnetic field can eliminate the powder simultaneously and pile up the density deviation that causes class products such as radiation ring, multidirectional rotatory suppression ring/cylinder to and deformation, the fracture problem that consequently causes. And after the magnetization pressing is finished, a direct current coil is used to form a magnetic field with small current to finish demagnetization, and the orientation pressing of the product is finished.
Description
Technical Field
The utility model relates to a magnetic field device, concretely relates to compound stack magnetic field device of preparation high performance tombarthite permanent magnetism.
Background
The existing rare earth permanent magnet is prepared by adopting either a direct current coil or a pulse coil, a power supply system of the direct current coil is relatively simple, and the presence or absence of an electromagnet magnetic field can be controlled by switching on or switching off the current; the magnetic field intensity is limited by the rectification capacity of a control power supply, the number of turns of a coil and the size of an iron core, and the direct current magnetic field cannot reach a higher magnetic field, so that an industrial pulse magnetic field appears, a capacitor discharges instantly when the direct current magnetic field is charged, although the direct current magnetic field can generate instant high magnetic field intensity, the pulse width of the pulse magnetic field is narrower, the duration time of the magnetic field is shorter, the orientation degree of high-performance rare earth permanent magnet powder is not improved favorably, the requirements of high-performance radiation rings, multidirectional rotary pressing magnets and the like on the continuous orientation magnetic field cannot be met, and the use of the direct current magnetic field is limited to a certain extent.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model aims to provide a compound superimposed magnetic field device of preparation high performance tombarthite permanent magnetism.
The utility model discloses a following technical scheme realizes:
the composite superposed magnetic field device for preparing the high-performance rare earth permanent magnet is characterized by comprising a direct current coil controlled by a direct current magnetic field power supply and a pulse coil controlled by a pulse magnetic field power supply, wherein the pulse coil is embedded in the direct current coil and is arranged along the length direction of the direct current coil.
As an improvement, the direct current coil comprises a direct current coil, an outer insulating layer, a direct current iron core and a direct current pole head, wherein the direct current coil is wound on the direct current iron core; the pulse solenoid includes pulse coil, internal insulation layer, pulse iron core, pulse pole head, pulse coil winding sets up on pulse iron core.
The direct current coil and the pulse coil are both made of square hollow copper tubes, an outer insulating layer is arranged between every two adjacent turns of direct current coils, and an inner insulating layer is arranged between every two adjacent turns of pulse coils; and insulating layers are arranged between the direct current coil and the direct current iron core and between the pulse coil and the pulse iron core.
As the improvement, the inside central point of direct current core department is provided with the cavity along its length direction and holds the chamber, and this cavity holds the intracavity scarf joint and sets up the pulse solenoid.
As an improvement, the ends of the impulse pole head and the direct current pole head are flush, and the outer diameter of the impulse pole head is adhered to the inner diameter of the direct current pole head.
As an improvement, pure water is filled in the square hollow copper pipe coil for cooling.
The utility model discloses a pulse and direct current solenoid carry out compound stack, and pulsed magnetic field produces the magnetic field that reaches 6T and carries out the premagnetization to the magnetic, then utilizes direct current magnetic field to keep the degree of magnetization to the powder, can improve the magnetization orientation degree of powder greatly, and the combined action in high magnetic field can eliminate the powder simultaneously and pile up the density deviation that causes radiation ring, multidirectional rotatory suppression ring/cylinder class product to and deformation, the fracture problem that consequently cause. And after the magnetization pressing is finished, a direct current coil is used to form a magnetic field with small current to finish demagnetization, and the orientation pressing of the product is finished.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
in the figure, 1-direct current coil, 11-direct current coil, 12-external insulating layer, 13-direct current iron core, 14-direct current pole head, 2-pulse coil, 21-pulse coil, 22-internal insulating layer, 23-pulse iron core and 24-pulse pole head.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, and specific embodiments will be given.
As shown in fig. 1, the utility model relates to a compound magnetic field device that superposes of preparation high performance tombarthite permanent magnetism, this compound magnetic field device that superposes include by direct current magnetic field power supply control's direct current solenoid and by pulse magnetic field power supply control's pulse solenoid, pulse solenoid embedded in the inside of direct current solenoid, and the pulse solenoid sets up along the length direction of direct current solenoid. The direct current electromagnet is controlled by a common direct current magnetic field power supply, and rectifies alternating current into a direct current power supply, wherein the direct current magnetic field is basically 1.6-2.5T; the pulse electromagnet is controlled by a pulse magnetic field power supply, a capacitor stores energy, and the pulse electromagnet is switched on by passing larger current in a coil in a shorter time to generate a larger magnetic field, wherein the pulse magnetic field can reach more than 6T.
The direct current coil comprises a direct current coil, an outer insulating layer, a direct current iron core and a direct current pole head, wherein the direct current coil is wound on the direct current iron core; the pulse coil comprises a pulse coil, an inner insulating layer, a pulse iron core and a pulse pole head, wherein the pulse coil is wound on the pulse iron core; the direct current coils and the pulse coils are both made of square hollow copper pipes, pure water is filled in the square hollow copper pipes for cooling, an outer insulating layer is arranged between every two adjacent turns of direct current coils, and an inner insulating layer is arranged between every two adjacent turns of pulse coils; and insulating layers are arranged between the direct current coil and the direct current iron core and between the pulse coil and the pulse iron core.
Preferably, a hollow accommodating cavity is arranged at the central position inside the direct current iron core along the length direction of the direct current iron core, and a pulse coil is embedded and arranged in the hollow accommodating cavity. The pulse pole head is flush with the end part of the direct current pole head, and the outer diameter of the pulse pole head is adhered to the inner diameter of the direct current pole head.
The utility model discloses a pulse and direct current solenoid obtain compound stack magnetic field, and the pulse field produces the magnetic field that reaches 6T and carries out the premagnetization to the magnetic, then utilizes direct current magnetic field to keep the degree of magnetization to the powder, can improve the magnetization orientation degree of powder greatly, and the combined action in high magnetic field can eliminate the powder simultaneously and pile up the density deviation that causes class products such as radiation ring, multidirectional rotatory suppression ring/cylinder to and deformation, the fracture problem that consequently causes. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a compound stack magnetic field device of preparation high performance tombarthite permanent magnetism, its characterized in that this compound stack magnetic field device includes direct current solenoid (1) by direct current magnetic field power control and pulse solenoid (2) by pulse magnetic field power control, pulse solenoid (2) are embedded in the inside of direct current solenoid (1), and pulse solenoid (2) set up along the length direction of direct current solenoid (1).
2. The composite superposed magnetic field device for preparing the high-performance rare earth permanent magnet according to claim 1, wherein the direct current coil (1) comprises a direct current coil (11), an outer insulating layer (12), a direct current iron core (13) and a direct current pole head (14), and the direct current coil (11) is wound on the direct current iron core (13); the pulse solenoid (2) comprises a pulse coil (21), an inner insulating layer (22), a pulse iron core (23) and a pulse pole head (24), wherein the pulse coil (21) is wound on the pulse iron core (23).
3. The composite superposed magnetic field device for preparing the high-performance rare earth permanent magnet according to claim 2, wherein the direct current coils (11) and the pulse coils (21) are both made of square hollow copper tubes, an outer insulating layer (12) is arranged between two adjacent turns of the direct current coils (11), and an inner insulating layer (22) is arranged between two adjacent turns of the pulse coils (21); insulating layers are arranged between the direct current coil (11) and the direct current iron core (13) and between the pulse coil (21) and the direct current iron core (13) and between the pulse iron cores (23).
4. The composite superposed magnetic field apparatus for preparing high-performance rare earth permanent magnet according to claim 2, wherein the dc core (13) is provided with a hollow accommodating cavity at its central position along its length, and the pulse coil (2) is embedded in the hollow accommodating cavity.
5. The composite superimposed magnetic field apparatus for producing high-performance rare-earth permanent magnet according to claim 2, wherein the pulse pole head (24) is flush with the end of the dc pole head (14), and the outer diameter of the pulse pole head (24) is bonded to the inner diameter of the dc pole head (14).
6. The composite superposed magnetic field apparatus for preparing high-performance rare earth permanent magnet according to claim 3, wherein pure water is introduced into the square hollow copper tube coil for cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021241792.9U CN212724877U (en) | 2020-06-30 | 2020-06-30 | Composite superposed magnetic field device for preparing high-performance rare earth permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021241792.9U CN212724877U (en) | 2020-06-30 | 2020-06-30 | Composite superposed magnetic field device for preparing high-performance rare earth permanent magnet |
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| Publication Number | Publication Date |
|---|---|
| CN212724877U true CN212724877U (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021241792.9U Active CN212724877U (en) | 2020-06-30 | 2020-06-30 | Composite superposed magnetic field device for preparing high-performance rare earth permanent magnet |
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| CN (1) | CN212724877U (en) |
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2020
- 2020-06-30 CN CN202021241792.9U patent/CN212724877U/en active Active
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