CN102922810A - Electrical sheet and manufacturing method thereof - Google Patents
Electrical sheet and manufacturing method thereof Download PDFInfo
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- CN102922810A CN102922810A CN2012104588494A CN201210458849A CN102922810A CN 102922810 A CN102922810 A CN 102922810A CN 2012104588494 A CN2012104588494 A CN 2012104588494A CN 201210458849 A CN201210458849 A CN 201210458849A CN 102922810 A CN102922810 A CN 102922810A
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Abstract
The invention relates to an electrical sheet and a manufacturing method thereof. The electrical sheet comprises at least two layers of sheet steel; insulating material for blocking current is arranged between the two layers; the thickness of each layer of sheet steel is reduced through rolling processing, so that the loss of the electrical sheet can be reduced; a multilayer structure can provide an appropriate shearing and processing thickness, so that convenience is provided for follow-up production and processing of the electrical sheet. The invention has the advantage that under the premise of obtaining appropriate production, shearing and processing thickness of the electrical sheet, the loss of the electrical sheet is reduced, and a remarkable energy saving effect is achieved.
Description
Technical field
The present invention relates to the electrical sheet Material Field, especially a kind of have oriented silicon steel disc coiled material and preparation method thereof for transformer core.
Background technology
Power transformer can produce magnetic loss unshakable in one's determination and winding copper loss in using, and the magnetic loss unshakable in one's determination that reduces transformer has energy-saving significance and the economic implications of highly significant.
The iron core of transformer generally by there being oriented silicon steel disc lamination to form, produces alternating magnetic field after the transformer energising in iron core, alternating magnetic field can produce eddy-current loss in core-lamination stack; One of effective measures that reduce Eddy Current Loss In Core of An Electromagnetic are the thickness that reduces the electrical steel sheet.The manufacture craft of traditional silicon steel sheet is with the direct pressure rolling of the silicon steel of individual layer, because the thickness of silicon steel sheet is less, when the thickness of silicon steel sheet reduces when falling the certain numerical value, such as less than 0.27mm, following negative consequence can occur, and for example: silicon steel can be broken or be ruptured.Therefore this will improve, reduce to silicon steel sheet production pressure rolling equipment proposition requirements at the higher level, to silicon steel sheet shearing equipment requirement the lamination production efficiency of transformer core.Therefore, overcoming on the above-mentioned negative consequence basis, further reducing the thickness of silicon steel sheet, it is very significant further reducing Eddy Current Loss In Core of An Electromagnetic.
Summary of the invention
The technical problem to be solved in the present invention is: propose a kind of electrical sheet and preparation method thereof, can be when reducing silicon steel sheet thickness with the reduction Eddy Current Loss In Core of An Electromagnetic, can not cause the raising of silicon steel sheet production and process equipment requirement, and improve transformer iron core lamination production work efficiency.
The technical solution adopted in the present invention is: a kind of electrical sheet, comprise two-layer at least steel disc base material, be provided with insulating barrier between described every two-layer steel disc base material, described insulating barrier simultaneously with two-layer steel disc substrate bonding up and down; The outer surface of electrical sheet is enclosed with the insulating barrier that intercepts eddy current.
Further, insulating barrier of the present invention is inorganic coating layer.
For the ease of base material in the process put and complete after arrangement, individual layer steel disc base material of the present invention is coiled material; Also be coiled material by the formed electrical sheet of individual layer steel disc base material.
Composite steel plate substrate of the present invention is integrated pressure viscosity and connects.
Simultaneously, the present invention also provides a kind of preparation method of electrical sheet, may further comprise the steps:
1) two-layer at least steel disc base material is stacked, apply inorganic coating between every two-layer steel disc base material; With the eddy current between the barrier layer, insulating materials is bonding with each layer steel disc simultaneously.
2) stacked good steel disc base material is carried out whole continuous pressure rolling, reduce the thickness of every layer of steel disc base material; Because every synusia material reduced thickness, one side reduces the eddy-current loss of electrical sheet; On the other hand, sandwich construction has increased the gross thickness of electrical sheet, is convenient to following process.
3) continue to carry out continuous pressure rolling, the crimping of composite steel plate substrate is formed as one steel disc; The thickness of the steel disc after the crimping is less than the thickness sum of composite steel plate substrate; Because individual layer steel disc base material is coiled material, therefore pressure rolling formation multilayer steel disc also is coiled material continuously.
4) at steel disc surface coating insulating layer.To intercept the eddy current between the transformer iron core lamination.
Individual layer steel disc base material of the present invention is siliceous steel disc, also can be the steel disc of present known technology.And the formed steel disc of continuous pressure rolling of the present invention is the making base material as the transformer core steel disc.
For refinement steel disc magnetic domain, with the eddy-current loss of further attenuating steel disc, steel disc is carried out laser portrayal processing.
The invention has the beneficial effects as follows: by reducing the thickness of every layer of substrate, even the production single substrate thickness that is difficult to reach, can reduce electrical sheet eddy-current loss; Sandwich construction has increased the gross thickness of electrical sheet, is convenient to the following process of electrical sheet, and has improved the iron core production efficiency such as transformer, has significant energy-conservation and economic benefit.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of the preferred embodiments of the present invention;
Among the figure: 1, electrical sheet; 11, lower floor; 12, lower upper strata; R, local amplifier section.
The specific embodiment
The present invention is further detailed explanation with preferred embodiment by reference to the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
As shown in Figure 1, a kind of electrical sheet 1, comprise two-layer steel disc base material, amplification signal such as R part among the figure, lower floor 11 is the thick steel disc base material of 0.27mm, and upper strata 12 also is the thick steel disc base material of 0.27mm, scribbles phosphate inorganic coating between lower floor 11 and the upper strata 12, two-layer steel disc is bonded as one, and two layers of thickness is the thickness that 0.54mm(does not charge to the interlayer inorganic coating herein).
Adding man-hour, two-layer steel disc is carried out continuous pressure rolling, is 0.15mm thickness with every layer of steel disc pressure rolling, further two-layer steel disc crimping is integrated simultaneously; After the pressure rolling, the steel disc that is formed by two-layer base material is 0.30mm thickness.Adopt continuous pressing and rolling process, pressure rolling forms the double-deck steel disc coiled material of 0.30mm continuously.Every layer of 0.15mm thickness steel disc carried out laser portrayal processing, and refinement steel disc magnetic domain is with further minimizing eddy-current loss.0.30mm thickness electrical sheet 1 skin that two-layer base material pressure rolling is formed is coated with the insulated paint that intercepts eddy current.
Just the specific embodiment of the present invention of describing in the above specification, various not illustrating is construed as limiting flesh and blood of the present invention, the person of an ordinary skill in the technical field after having read specification can to before the described specific embodiment make an amendment or be out of shape, and do not deviate from essence of an invention and scope.
Claims (9)
1. electrical sheet is characterized in that: comprise two-layer at least steel disc base material, be provided with insulating barrier between described every two-layer steel disc base material, described insulating barrier simultaneously with two-layer steel disc substrate bonding up and down; The outer surface of electrical sheet is enclosed with the insulating barrier that intercepts eddy current.
2. a kind of electrical sheet as claimed in claim 1, it is characterized in that: described insulating barrier is inorganic coating layer.
3. a kind of electrical sheet as claimed in claim 1, it is characterized in that: described individual layer steel disc base material is coiled material; Also be coiled material by the formed electrical sheet of steel disc base material.
4. a kind of electrical sheet as claimed in claim 1, it is characterized in that: described composite steel plate substrate is integrated pressure viscosity and connects.
5. the preparation method of an electrical sheet is characterized in that: may further comprise the steps:
1) two-layer at least steel disc base material is stacked, be coated with coating insulation material between every two-layer steel disc base material;
2) stacked good steel disc base material is carried out whole continuous pressure rolling, reduce the thickness of every layer of steel disc base material;
3) continue to carry out continuous pressure rolling, the crimping of composite steel plate substrate is formed as one steel disc; The thickness of the steel disc after the crimping is less than the thickness sum of composite steel plate substrate;
4) at steel disc surface coating insulating layer.
6. the preparation method of a kind of electrical sheet as claimed in claim 5, it is characterized in that: the insulating materials in the described step 1) is inorganic coating.
7. the preparation method of a kind of electrical sheet as claimed in claim 5, it is characterized in that: described individual layer steel disc base material is coiled material, pressure rolling forms multilayer steel disc coiled material continuously.
8. the preparation method of a kind of electrical sheet as claimed in claim 5 is characterized in that: steel disc is carried out laser portrayal processing, with refinement steel disc magnetic domain.
9. the preparation method of a kind of electrical sheet as claimed in claim 5, it is characterized in that: described individual layer steel disc base material is siliceous steel disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104588494A CN102922810A (en) | 2012-11-15 | 2012-11-15 | Electrical sheet and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104588494A CN102922810A (en) | 2012-11-15 | 2012-11-15 | Electrical sheet and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102922810A true CN102922810A (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104588494A Pending CN102922810A (en) | 2012-11-15 | 2012-11-15 | Electrical sheet and manufacturing method thereof |
Country Status (1)
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| CN (1) | CN102922810A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1887512A (en) * | 2005-06-30 | 2007-01-03 | 宝山钢铁股份有限公司 | Production process of cold rolled orientation-free electrical steel plate with low iron loss and high magnetic induction |
| US20080136285A1 (en) * | 2006-12-12 | 2008-06-12 | Fumio Tajima | Spindle motor, disk drive, and method of fabricating a stator core |
| CN101438358A (en) * | 2006-04-12 | 2009-05-20 | 西门子公司 | Method for lamination of an electrical strip for transformer cores |
| WO2012017670A1 (en) * | 2010-08-06 | 2012-02-09 | Ｊｆｅスチール株式会社 | Grain-oriented magnetic steel sheet and process for producing same |
| CN202934859U (en) * | 2012-11-15 | 2013-05-15 | 曾庆赣 | Electrical steel sheet |
-
2012
- 2012-11-15 CN CN2012104588494A patent/CN102922810A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1887512A (en) * | 2005-06-30 | 2007-01-03 | 宝山钢铁股份有限公司 | Production process of cold rolled orientation-free electrical steel plate with low iron loss and high magnetic induction |
| CN101438358A (en) * | 2006-04-12 | 2009-05-20 | 西门子公司 | Method for lamination of an electrical strip for transformer cores |
| US20080136285A1 (en) * | 2006-12-12 | 2008-06-12 | Fumio Tajima | Spindle motor, disk drive, and method of fabricating a stator core |
| WO2012017670A1 (en) * | 2010-08-06 | 2012-02-09 | Ｊｆｅスチール株式会社 | Grain-oriented magnetic steel sheet and process for producing same |
| CN202934859U (en) * | 2012-11-15 | 2013-05-15 | 曾庆赣 | Electrical steel sheet |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130213 |