CN202934859U - Electrical steel sheet - Google Patents
Electrical steel sheet Download PDFInfo
- Publication number
- CN202934859U CN202934859U CN 201220602420 CN201220602420U CN202934859U CN 202934859 U CN202934859 U CN 202934859U CN 201220602420 CN201220602420 CN 201220602420 CN 201220602420 U CN201220602420 U CN 201220602420U CN 202934859 U CN202934859 U CN 202934859U
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- steel disc
- base material
- electrical sheet
- thickness
- steel sheet
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Abstract
The utility model relates to an electrical steel sheet, which is formed through at least two layers of steel sheets, insulating material for insulating current is arranged between the layers, press rolling for machining is adopted to reduce the thickness of each layer of the steel sheet, so as to reduce the consumption of the electrical steel sheet, the multi-layered structure enables the cutting and machining thickness to be appropriate, and the follow-up production and machining for the electrical steel sheet can be facilitated. Under the premise of obtaining the appropriate cutting and machining thickness for the production of the electrical steel sheets, the consumption of the electrical steel sheet is reduced, and the energy-saving effect is remarkable.
Description
Technical field
The utility model relates to the electrical sheet Material Field, and especially a kind of have an oriented silicon steel disc coiled material 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, and 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 by 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 while falling the certain numerical value, such as being less than 0.27mm, there will be following negative consequence, and for example: silicon steel can broken or fracture.Therefore this will propose requirements at the higher level to silicon steel sheet production pressure rolling equipment, silicon steel sheet shearing equipment requirement be improved, reduces the lamination production efficiency of transformer core.Therefore, overcoming on 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.
The utility model content
The technical problems to be solved in the utility model is: a kind of electrical sheet is provided, can when reducing silicon steel sheet thickness with the reduction Eddy Current Loss In Core of An Electromagnetic, can cause the raising of silicon steel sheet production and process equipment requirement, and improve transformer iron core lamination production work efficiency.
The utility model solves the technical scheme that its technical problem adopts: a kind of electrical sheet, comprise at least two-layer steel disc base material, and be provided with insulating barrier between described every two-layer steel disc base material, described insulating barrier is simultaneously and upper and lower two-layer steel disc substrate bonding; The outer surface of electrical sheet is enclosed with the insulating barrier that intercepts eddy current.
Further, insulating barrier described in the utility model is inorganic coating layer.
For the ease of base material in process put and complete after arrangement, individual layer steel disc base material of the present invention is coiled material; By the formed electrical sheet of individual layer steel disc base material, it is also coiled 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, comprises the following steps:
1) at least two-layer steel disc base material is stacked, apply inorganic coating between every two-layer steel disc base material; With the eddy current between barrier layer, insulating materials is simultaneously bonding by each layer of steel disc.
2) stacked good steel disc base material is carried out to whole continuous pressure rolling, reduce the thickness of every layer of steel disc base material; Due to every synusia material reduced thickness, reduce on the one hand 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 to steel disc; The thickness of the steel disc after 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 is also coiled material continuously.
4) at steel disc surface coating insulating layer.To intercept the eddy current between transformer iron core lamination.
Individual layer steel disc base material of the present invention is siliceous steel disc, can be also the steel disc of current 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, further to lower the eddy-current loss of steel disc, steel disc is carried out to laser and portray processing.
The beneficial effects of the utility model are: by reducing the thickness of every layer of substrate, even production single substrate is difficult to the thickness reached, and 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.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the structural representation of preferred embodiment of the present utility model;
In figure: 1, electrical sheet; 11, lower floor; 12, lower upper strata; R, local amplifier section.
The specific embodiment
With preferred embodiment, the utility model is described in further detail by reference to the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
As shown in Figure 1, a kind of electrical sheet 1, comprise two-layer steel disc base material, amplification signal as R part in figure, lower floor 11 is the thick steel disc base material of 0.27mm, and upper strata 12 is also the thick steel disc base material of 0.27mm, between lower floor 11 and upper strata 12, scribbles phosphate inorganic coating, two-layer steel disc is bonded as one, and two layers of thickness is that 0.54mm(does not charge to the thickness of interlayer inorganic coating herein).
Adding man-hour, two-layer steel disc is carried out to continuous pressure rolling, is 0.15mm thickness by every layer of steel disc pressure rolling, further two-layer steel disc crimping is integrated simultaneously; After pressure rolling, the steel disc 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 to laser and portray processing, refinement steel disc magnetic domain, further to reduce eddy-current loss.The outer insulated paint that intercepts eddy current that is coated with of the 0.30mm thickness electrical sheet 1 that two-layer base material pressure rolling is formed.
What in above specification, describe is the specific embodiment of the present utility model, various not illustrating is construed as limiting flesh and blood of the present utility model, 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 and the scope of utility model.
Claims (5)
1. an electrical sheet, is characterized in that: comprise at least two-layer steel disc base material, between described every two-layer steel disc base material, be provided with insulating barrier, described insulating barrier while and upper and lower two-layer steel disc substrate bonding; 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; By the formed electrical sheet of steel disc base material, it is also coiled material.
4. a kind of electrical sheet as claimed in claim 1, it is characterized in that: described individual layer steel disc base material is siliceous steel disc.
5. 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; The thickness of the steel disc after pressure viscosity connects is less than the thickness sum of composite steel plate substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220602420 CN202934859U (en) | 2012-11-15 | 2012-11-15 | Electrical steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220602420 CN202934859U (en) | 2012-11-15 | 2012-11-15 | Electrical steel sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202934859U true CN202934859U (en) | 2013-05-15 |
Family
ID=48319118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220602420 Expired - Fee Related CN202934859U (en) | 2012-11-15 | 2012-11-15 | Electrical steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202934859U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102922810A (en) * | 2012-11-15 | 2013-02-13 | 曾庆赣 | Electrical sheet and manufacturing method thereof |
-
2012
- 2012-11-15 CN CN 201220602420 patent/CN202934859U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102922810A (en) * | 2012-11-15 | 2013-02-13 | 曾庆赣 | Electrical sheet and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20141115 |
|
| EXPY | Termination of patent right or utility model |