CN105206413A - Efficient flexible magnetic sheet machining technology - Google Patents
Efficient flexible magnetic sheet machining technology Download PDFInfo
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- CN105206413A CN105206413A CN201510659933.6A CN201510659933A CN105206413A CN 105206413 A CN105206413 A CN 105206413A CN 201510659933 A CN201510659933 A CN 201510659933A CN 105206413 A CN105206413 A CN 105206413A
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- magnetic sheet
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- sintered
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Abstract
The invention discloses an efficient flexible magnetic sheet machining technology. The technology includes the steps that 1, ferrite powder is made into a raw magnetic sheet; 2, the surface of the raw magnetic sheet is cut along different cutting lines to obtain a needed magnetic sheet shape, wherein a part accounting for 1/5-1/2 of the thickness of the raw magnetic sheet is kept not cut through in the cutting process; 3, the raw magnetic sheet is sintered into a cured magnetic sheet in a sintering atmosphere; 4, an adhesive sheet is attached to one side or double sides of the sintered magnetic sheet, and by adopting an extruding method or other methods, the cured magnetic sheet is extruded to break into small magnetic sheets along the cutting lines. According to the machining technology, the magnetic sheet is made flexible indirectly and can be applied to wireless charging ends or charged terminals. In addition, the magnetic sheet is sintered according to a normal technology, and therefore all electromagnetic properties are retained.
Description
Technical field
The present invention relates to ferrite magnetic material technical field, particularly, relate to a kind of high-efficiency soft magnetic sheet processing technology, be applied to wireless charging field, also can be applied to NFC occasion.
Background technology
Along with the development of information technology, the application of wireless charging technology and NFC technique is more and more wider, more and more obtains everybody attention; Most widely used in current wireless charging scheme is induction type wireless charging technology, and be utilize near field to respond to, namely inductance coupling high, is sent to the device of electric terminal by electric energy by charging end.Owing to transmitting energy with inductance coupling high between charging end and electric terminal, therefore connect without electric wire between the two.
In wireless charging device, comparatively the material of core is the magnetic sheet of magnetic material processing; Thin as the major requirement of embedded components and parts to magnetic sheet, particularly electric terminal (as mobile phone) requires higher, normally 01 ~ 0.3mm, due to the crisp easily broken characteristic of magnetic material itself, direct use can bring the problem of fail safe aspect to terminal, therefore usual material magnetic sheet being made into flexibility, adds 10 ~ 30% adhesives to improve the flexibility of magnetic sheet, but because the electromagnetic property of the intervention magnetic sheet of adhesive reduces greatly, charge efficiency also has a great impact.
Summary of the invention
The object of the invention is to, for the problems referred to above, provide a kind of high-efficiency soft magnetic sheet processing technology.
Technical scheme of the present invention is: a kind of high-efficiency soft magnetic sheet processing technology, comprises the following steps:
(1) ferrite powder is made into magnetisation sheet;
(2) magnetisation sheet surface is formed the shape of required magnetic sheet along the cutting of different lines of cut, retain 1/5 ~ 1/2 of magnetisation sheet thickness during cutting and do not cut and wear;
(3) magnetisation sheet is sintered ripe magnetic sheet under sintering atmosphere;
(4) the magnetic sheet single or double burnt till sticks film, and is broken into little magnetic sheet one by one along line of cut after making ripe magnetic sheet pressurized by extruding or other method.
Preferably, what described ferrite powder was made into the employing of magnetisation sheet is the tape casting, extrusion or injection molding.
Preferably, the shape of described magnetic sheet is square or rhombus.
Beneficial effect of the present invention: make magnetic sheet in a disguised form with certain flexibility by processing technology of the present invention, goes for rushing electricity end and being rushed the terminal of electricity of wireless punching electricity, as mobile phone, and camera etc.In addition, compare with the flexible magnetic sheet of routine, the adhesive or other organic substance that usually add 10% 30% when conventional flexible magnetic sheet is produced are used for magnetic-particle of fitting, and its electromagnetic property drops to 30% 60% of normal magnetic sheet; And the magnetic sheet in the present invention is by normal process sintering, remain whole electromagnetic propertys.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of magnetic sheet line of cut of the present invention;
Fig. 2 is the structural representation of the another kind of embodiment of magnetic sheet line of cut of the present invention;
Fig. 3 is the structural representation of the third embodiment of magnetic sheet line of cut of the present invention;
Fig. 4 is the roller extruded in the present invention.
Embodiment
By reference to the accompanying drawings execution mode provided by the invention is described in further detail:
A kind of high-efficiency soft magnetic sheet processing technology, comprises the following steps:
(1) ferrite powder is made into magnetisation sheet;
(2) magnetisation sheet surface is formed the shape of required magnetic sheet along the cutting of different lines of cut, retain 1/5 ~ 1/2 of magnetisation sheet thickness during cutting and do not cut and wear;
(3) magnetisation sheet is sintered ripe magnetic sheet under sintering atmosphere;
(4) the magnetic sheet single or double burnt till sticks film, and is broken into little magnetic sheet one by one along line of cut after making ripe magnetic sheet pressurized by extruding or other method.
Embodiment 1:(1) ferrite powder is made into magnetisation sheet, concrete magnetic sheet shape can be the shape of any demand such as circular, square, and manufacture method can be the tape casting, extrusion or injection molding etc.;
(2) utilize cutter that magnetisation sheet surface is cut into the shape (as Figure 1-3) of needs, by when cutting shown in figure, the shape of the magnetic sheet obtained is square, rhombus or strip, retains 1/5 ~ 1/2 of magnetisation sheet thickness and do not cut and wear during cutting; Between line of cut, width can be 1 ~ 10mm, is preferably 2 ~ 5mm according to magnetic sheet size;
(3) magnetisation sheet is sintered ripe magnetic sheet under normal sintering atmosphere;
(4) the magnetic sheet single or double burnt till is sticked film, and be broken into little magnetic sheet one by one along cutting seam after making magnetic sheet pressurized by extruding or other method, magnetic sheet 1 is shown there is certain flexibility; The method of extruding can make magnetic sheet by the middle of two rollers 2 (as Fig. 4).
Make magnetic sheet in a disguised form with certain flexibility by processing technology of the present invention, go for rushing electricity end and being rushed the terminal of electricity of wireless punching electricity, as mobile phone, camera etc.In addition, compare with the flexible magnetic sheet of routine, the adhesive or other organic substance that usually add 10% 30% when conventional flexible magnetic sheet is produced are used for magnetic-particle of fitting, and its electromagnetic property drops to 30% 60% of normal magnetic sheet; And the magnetic sheet in the present invention is by normal process sintering, remain whole electromagnetic propertys.
In this description, the present invention is described with reference to its specific embodiment.But, still can make various amendment and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (3)
1. a high-efficiency soft magnetic sheet processing technology, is characterized in that, comprises the following steps:
(1) ferrite powder is made into magnetisation sheet;
(2) magnetisation sheet surface is formed the shape of required magnetic sheet along the cutting of different lines of cut, retain 1/5 ~ 1/2 of magnetisation sheet thickness during cutting and do not cut and wear;
(3) magnetisation sheet is sintered ripe magnetic sheet under sintering atmosphere;
(4) the magnetic sheet single or double burnt till sticks film, and is broken into little magnetic sheet one by one along line of cut after making ripe magnetic sheet pressurized by extruding or other method.
2. high-efficiency soft magnetic sheet processing technology according to claim 1, is characterized in that, what described ferrite powder was made into the employing of magnetisation sheet is the tape casting, extrusion or injection molding.
3. high-efficiency soft magnetic sheet processing technology according to claim 1, is characterized in that, the shape of described magnetic sheet is square or rhombus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510659933.6A CN105206413A (en) | 2015-10-14 | 2015-10-14 | Efficient flexible magnetic sheet machining technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510659933.6A CN105206413A (en) | 2015-10-14 | 2015-10-14 | Efficient flexible magnetic sheet machining technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105206413A true CN105206413A (en) | 2015-12-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510659933.6A Pending CN105206413A (en) | 2015-10-14 | 2015-10-14 | Efficient flexible magnetic sheet machining technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105206413A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412650A (en) * | 2018-09-19 | 2019-03-01 | 无锡斯贝尔磁性材料有限公司 | A method of producing close range wireless communication patch |
| WO2023207448A1 (en) * | 2022-04-29 | 2023-11-02 | 吴琳艳 | Preparation method for flexible magnetic strip carrier, flexible magnetic strip carrier, and eyelash ornament |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080224937A1 (en) * | 2007-03-07 | 2008-09-18 | Toda Kogyo Corporation | Molded ferrite sheet, sintered ferrite substrate and antenna module |
| JP2009099895A (en) * | 2007-10-19 | 2009-05-07 | Fdk Corp | Ferrite sheet for noise countermeasure |
| CN102731100A (en) * | 2011-04-08 | 2012-10-17 | 株式会社Maruwa | Composite ferrite sheet, method of fabricating the composite ferrite sheet, and array of sintered ferrite segments used to form the composite ferrite sheet |
| CN203521092U (en) * | 2013-09-12 | 2014-04-02 | 深圳市金瑞中核电子有限公司 | Flexible ferrite magnetism isolating piece |
| CN104647819A (en) * | 2014-12-31 | 2015-05-27 | 横店集团东磁股份有限公司 | Magnetic-isolating material and flexible treatment method thereof |
-
2015
- 2015-10-14 CN CN201510659933.6A patent/CN105206413A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080224937A1 (en) * | 2007-03-07 | 2008-09-18 | Toda Kogyo Corporation | Molded ferrite sheet, sintered ferrite substrate and antenna module |
| JP2009099895A (en) * | 2007-10-19 | 2009-05-07 | Fdk Corp | Ferrite sheet for noise countermeasure |
| CN102731100A (en) * | 2011-04-08 | 2012-10-17 | 株式会社Maruwa | Composite ferrite sheet, method of fabricating the composite ferrite sheet, and array of sintered ferrite segments used to form the composite ferrite sheet |
| CN203521092U (en) * | 2013-09-12 | 2014-04-02 | 深圳市金瑞中核电子有限公司 | Flexible ferrite magnetism isolating piece |
| CN104647819A (en) * | 2014-12-31 | 2015-05-27 | 横店集团东磁股份有限公司 | Magnetic-isolating material and flexible treatment method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412650A (en) * | 2018-09-19 | 2019-03-01 | 无锡斯贝尔磁性材料有限公司 | A method of producing close range wireless communication patch |
| WO2023207448A1 (en) * | 2022-04-29 | 2023-11-02 | 吴琳艳 | Preparation method for flexible magnetic strip carrier, flexible magnetic strip carrier, and eyelash ornament |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151230 |