CN110724952A - Combined magnetic core magnetic field generating device for improving magnetic gathering capacity - Google Patents
Combined magnetic core magnetic field generating device for improving magnetic gathering capacity Download PDFInfo
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- CN110724952A CN110724952A CN201911220948.7A CN201911220948A CN110724952A CN 110724952 A CN110724952 A CN 110724952A CN 201911220948 A CN201911220948 A CN 201911220948A CN 110724952 A CN110724952 A CN 110724952A
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- magnetic
- working
- magnetic pole
- magnetic field
- core
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- 238000003475 lamination Methods 0.000 claims abstract description 24
- 230000005284 excitation Effects 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims description 12
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 6
- 229910000859 α-Fe Inorganic materials 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910000889 permalloy Inorganic materials 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims 4
- 238000009826 distribution Methods 0.000 abstract description 7
- 239000004020 conductor Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004372 laser cladding Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F2003/106—Magnetic circuits using combinations of different magnetic materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- Power Engineering (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The magnetic field generating device of the combined magnetic core for improving the magnetic gathering capacity comprises a closed annular magnetic core, wherein an excitation coil is wound on the magnetic core and connected with a power supply, the opposite sides of the magnetic core are respectively provided with a working magnetic pole, the end parts of the two working magnetic poles are opposite, and a working magnetic field is formed by the gap of the working magnetic poles; a work magnetic field for placing the work piece on the workbench; the lower side of the working magnetic pole is provided with a plurality of triangular positioning grooves parallel to the longitudinal axis of the working magnetic pole and is also provided with a plurality of lamellar magnetic pole laminations, the magnetic pole laminations are provided with end parts which can be inserted into the triangular positioning grooves, the magnetic pole laminations are matched with the working magnetic pole after being guided by the positioning grooves and are fixed by a fixing part, and the magnetic poles are positioned above a workpiece and are mutually separated. According to the invention, by matching the combination form of the magnetic pole laminations made of different magnetic conducting materials and the magnetic pole laminations with different quantities, the field intensity distribution of the magnetic field where the workpiece is located can be effectively changed, and the magnetic field intensity of the magnetic pole gap is improved.
Description
Technical Field
The invention relates to a magnetic field generating device for laser cladding processing.
Background
In the laser processing process, the control of a molten pool is realized by controlling the magnitude and the direction of the Lorentz force through a coupling electromagnetic field, the defects of air holes, cracks and the like in a solidification structure are reduced, and the structure crystal grains are refined, so that the mechanical property of the additive manufacturing part is improved.
The Chinese patent with the patent application number of 201210225593.2 filed by Liuhong xi, et al, university of Kunming theory discloses a method and a device for refining a solidification structure of a laser cladding layer by an alternating magnetic field.
Chinese patent with patent application number 201310755161.5, filed by Yaojianhua et al, Zhejiang industrial university, discloses a static magnetic field-laser coaxial composite cladding method and device, wherein a magnetic field generating device is integrated on a laser head to realize synchronous movement of a magnetic field, so that the phenomena of flow and splashing of a molten pool are inhibited, and the solidification structure of a cladding layer is regulated and controlled.
Chinese patent application No. 201610081496.9, filed by sun-gui-arene et al, of southeast university, discloses an electromagnetic field-assisted laser additive manufacturing device which can effectively reduce pores and microcracks generated inside parts during manufacturing, and at the same time, can refine crystal grains to obtain parts with excellent performance.
However, the magnetic field assisted laser manufacturing apparatus disclosed in the above patent all adopts a single magnetic core structure, and only the magnetic field intensity can be changed by controlling the current in the excitation coil, and the magnetic field intensity distribution of the magnetic field where the workpiece is located cannot be changed by changing the material of the magnetic core structure.
Disclosure of Invention
In order to overcome the defects in the background art, the invention provides the combined magnetic core magnetic field generating device for improving the magnetic gathering capacity, and solves the problems of low magnetic field intensity, uneven field intensity distribution and the like in the laser cladding process.
The invention is realized by the following technical scheme: a magnetic field generator with combined magnetic core for increasing the magnetic gathering power features that the exciting coil wound on magnetic core is energized to generate a magnetic field, and a certain magnetic field intensity is generated in the gap between magnetic poles under the action of magnetic conduction of magnetic core. By changing the material and the number of the magnetic pole laminations matched with the working magnetic poles, the field intensity distribution of a magnetic field where the workpiece is located is effectively changed, so that the magnetic concentration effect of the magnetic core is more obvious.
The invention provides the combined magnetic core magnetic field generating device for improving the magnetic gathering capacity, which comprises a power supply, an excitation coil, a magnetic core, working magnetic poles, a workbench and a fixing piece, wherein the magnetic core is in a closed ring shape, the excitation coil is wound on the magnetic core, the excitation coil is connected with the power supply, the two working magnetic poles are respectively arranged on the opposite sides of the magnetic core, the end parts of the two working magnetic poles are opposite, and a working magnetic field is formed by the gap between the two working magnetic poles;
the magnetic core is connected with the magnetic poles and the fixing piece;
the lower side of the working magnetic pole is provided with a plurality of triangular positioning grooves parallel to the longitudinal axis of the working magnetic pole and is also provided with a plurality of lamellar magnetic pole laminations, the magnetic pole laminations are provided with end parts which can be inserted into the triangular positioning grooves, the magnetic pole laminations are matched with the working magnetic pole after being guided by the positioning grooves and are fixed by a fixing part, and the magnetic poles are positioned above a workpiece and are separated from each other.
Further, the power supply may be an alternating current power supply or a direct current power supply, i.e., the magnetic field may be an alternating magnetic field or a steady magnetic field.
Furthermore, the excitation coil is a coil wound by an enameled wire or a copper pipe, and each turn of the coil of the excitation coil is electrically insulated.
Furthermore, the magnetic core and the working magnetic pole can be made of ferrite or silicon steel sheets with higher conductivity, and the magnetic core and the working magnetic pole can be of an integrated structure made of the same material or of a separated structure made of different materials.
Further, the magnetic pole lamination material is a silicon steel sheet, ferrite, permalloy or an alloy strip.
Furthermore, the field intensity distribution of the magnetic field where the workpiece is located can be changed by changing the material and the number of the magnetic pole laminations, and the magnetic field intensity at the magnetic pole gap is enhanced.
The invention has the following beneficial effects:
the invention adopts a combined magnetic pole structure, and can effectively change the field intensity distribution of a magnetic field where a workpiece is positioned and improve the magnetic field intensity of a magnetic pole gap by matching the combination form of the magnetic pole laminations made of different magnetic conducting materials and the magnetic pole laminations in different quantities.
The device of the invention has simple structure and convenient processing. The positioning groove is formed in the lower side of the working magnetic pole, and the relative position between the magnetic pole lamination and the working magnetic pole can be determined through the positioning groove in actual assembly, so that the assembly accuracy can be improved.
The invention is suitable for various magnetic field generating devices, such as alternating magnetic field generating devices, steady magnetic field generating devices and the like.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a top view of the present invention.
Fig. 3a is a schematic view of the structure of the magnetic pole head.
Fig. 3b is a cross-sectional view taken along line a-a of fig. 3 a.
Detailed Description
The following describes a detailed embodiment of the present invention with reference to the accompanying drawings.
A combined magnetic core magnetic field generating device for improving the magnetic gathering capacity comprises a power supply 1, an excitation coil 2, a magnetic core 3, a working magnetic pole 4, a magnetic pole lamination 5, a fixing piece 6, a working table 7 and a workpiece 8. The magnetic core 3 is in a closed ring shape, the magnetic core 3 is wound with the excitation coil 2, the excitation coil 2 is connected with the power supply 1, the opposite sides of the magnetic core 3 are respectively provided with a working magnetic pole 4, the end parts of two working magnetic poles (4.1,4.2) are opposite, and the gap between the two working magnetic poles (4.1,4.2) forms a working magnetic field;
The lower side of the working magnetic pole 4 is provided with a plurality of triangular positioning grooves parallel to the longitudinal axis of the working magnetic pole, and is also provided with a plurality of thin-sheet magnetic pole laminations 5, the magnetic pole laminations 5 are provided with end parts capable of being inserted into the triangular positioning grooves, the magnetic pole laminations 5 are accurately matched with the working magnetic pole 4 after being guided by the triangular positioning grooves and are fixed by a fixing part 6, silicon steel sheets, ferrite, permalloy or alloy strips can be selected as materials of the magnetic pole laminations 5, and the field intensity distribution of a magnetic field where a workpiece is located can also be effectively changed by matching the magnetic pole laminations 5 with the working magnetic pole 4 through different quantities.
The magnetic core 3 and the working magnetic pole 4 are made of silicon steel sheets or ferrite, and the magnetic core and the working magnetic pole can be of an integrated structure made of the same material or of a separated structure made of different materials. The excitation coil is an enameled wire or a copper pipe wound coil, and each turn of the coil of the excitation coil is electrically insulated.
The iron core is square, and can also be round, oval and other shapes.
The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the present invention should not be considered limited to the specific forms set forth in the embodiments but rather by the equivalents thereof as may occur to those skilled in the art upon consideration of the present inventive concept.
Claims (5)
1. The magnetic field generating device comprises a power supply, an excitation coil, a magnetic core, working magnetic poles, a workbench and a fixing piece, wherein the magnetic core is in a closed ring shape, the excitation coil is wound on the magnetic core and connected with the power supply, the two working magnetic poles are respectively arranged on the opposite sides of the magnetic core, the end parts of the two working magnetic poles are opposite, and a working magnetic field is formed by the gap between the two working magnetic poles;
a workpiece is placed on a working magnetic field on the workbench, a mortise is arranged on the workbench, the fixing piece is fixed on the workbench through joggle connection, and the magnetic core is connected with the magnetic pole and the fixing piece; the method is characterized in that:
the lower side of the working magnetic pole is provided with a plurality of triangular positioning grooves parallel to the longitudinal axis of the working magnetic pole and is also provided with a plurality of lamellar magnetic pole laminations, the magnetic pole laminations are provided with end parts which can be inserted into the triangular positioning grooves, the magnetic pole laminations are matched with the working magnetic pole after being guided by the positioning grooves and are fixed by a fixing part, and the magnetic poles are positioned above a workpiece and are separated from each other.
2. The combined core magnetic field generator for improving magnetic flux concentration of claim 1, wherein: the power supply is an alternating current power supply or a direct current power supply, and the magnetic field is an alternating magnetic field or a steady magnetic field.
3. The combined core magnetic field generator for improving magnetic flux concentration of claim 1, wherein: the excitation coil is a coil wound by an enameled wire or a copper pipe, and each turn of the coil of the excitation coil is electrically insulated.
4. The combined core magnetic field generator for improving magnetic flux concentration of claim 1, wherein: the magnetic core and the working magnetic pole are made of ferrite or silicon steel sheets with higher conductivity, and the magnetic core and the working magnetic pole are of an integrated structure made of the same material or of a separated structure made of different materials.
5. The combined core magnetic field generator for improving magnetic flux concentration of claim 1, wherein: the magnetic pole lamination material is a silicon steel sheet, ferrite, permalloy or alloy strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911220948.7A CN110724952A (en) | 2019-12-03 | 2019-12-03 | Combined magnetic core magnetic field generating device for improving magnetic gathering capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911220948.7A CN110724952A (en) | 2019-12-03 | 2019-12-03 | Combined magnetic core magnetic field generating device for improving magnetic gathering capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110724952A true CN110724952A (en) | 2020-01-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911220948.7A Pending CN110724952A (en) | 2019-12-03 | 2019-12-03 | Combined magnetic core magnetic field generating device for improving magnetic gathering capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110724952A (en) |
Citations (14)
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2019
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