CN104183351A - High-performance transformer iron core sheet - Google Patents
High-performance transformer iron core sheet Download PDFInfo
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- CN104183351A CN104183351A CN201410377582.5A CN201410377582A CN104183351A CN 104183351 A CN104183351 A CN 104183351A CN 201410377582 A CN201410377582 A CN 201410377582A CN 104183351 A CN104183351 A CN 104183351A
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Abstract
The invention discloses a high-performance transformer iron core sheet. The high-performance transformer iron core sheet comprises the following main components in percentage by weight: 80-90% of powdered iron, 8-14% of a filling material, and the balance of an additive. The iron core sheet is prepared by a powder rolling technology. The high-performance transformer iron core sheet provided by the invention is reasonable in component allocation, appropriate in adding amount of the filling material, stable in rolling process, and sufficient in structural transformation; a prepared transformer iron core shows an excellent property in the eddy loss control and reduction aspect, and the service performance of a transformer is effectively improved.
Description
Technical field
The present invention relates to a kind of transformer core sheet material, relate in particular to a kind of high-performance transformer iron-core piece material of effectively controlled vortex flow loss, belong to technical field of electronic materials.
Background technology
Transformer is made according to electromagnetic induction principle, is wound with two windings on closed iron core, and one is primary winding, and another is auxiliary winding.In the transformer course of work, its power loss is not only created on the resistance of coil, is also created in the iron core after alternating current magnetization.People call " iron loss " the power loss in iron core conventionally, cause the reason of iron loss to be mainly divided into magnetic hysteresis loss and eddy current loss.Magnetic hysteresis loss is the energy loss that core material is caused by hysteresis in magnetization process, eddy current loss is created in vertical flow direction plane, and the energy of loss is all converted into heat energy, and equipment is heated up, Efficiency Decreasing, is unfavorable for the use of alternating current machine equipment.In order to reduce iron loss, existing iron core is all selected soft magnetic material, and silicon steel sheet is widely used in the equipment such as motor, transformer, relay.
Existing transformer core sheet material adopts silicon steel sheet mostly, silicon steel sheet stable performance, iron loss amount is little, but is controlling also Shortcomings of ability aspect iron core vortex loss, in order further to improve the performance of transformer, the composition of transformer core sheet material and preparation technology thereof need further raising.
Summary of the invention
For the demand, the invention provides a kind of high-performance transformer iron-core piece material, the composition configuration of this iron core sheet material rationally, cost is moderate, stable performance, transformer core effect aspect control and reduction eddy current loss of using this iron core sheet material to make is remarkable, has effectively promoted the serviceability of transformer.
The present invention is a kind of high-performance transformer iron-core piece material, and the main component of this iron core sheet material and percentage composition proportioning thereof are: iron powder 80%-90%, filler 8%-14%, and all the other are auxiliary agent, described iron core sheet material adopts powder rolling process to be prepared.
In a preferred embodiment of the present invention, the main component of described lamination and percentage composition proportioning thereof are: iron powder 80%-84%, filler 10%-12%, all the other are auxiliary agent.
In a preferred embodiment of the present invention, described iron powder is selected aerosol powder, and its average particle size is about 120-180 order.
In a preferred embodiment of the present invention, described filler comprises chromium powder, nickel powder, silica flour and molybdenum powder.
In a preferred embodiment of the present invention, in described filler, the average particle size of chromium powder, nickel powder and molybdenum powder is about 325-400 order.
In a preferred embodiment of the present invention, in described filler, the average particle size of silica flour is about 200-225 order.
In a preferred embodiment of the present invention, described auxiliary agent mainly comprises plasticizer, lubricant and stabilizer.
The present invention has disclosed a kind of high-performance transformer iron-core piece material, this lamination material component configuration rationally, filler adds proper, the operation of rolling is stable, structural transformation is abundant, the transformer core making performance aspect control and reduction eddy current loss is more outstanding, has effectively promoted the serviceability of transformer.
Embodiment
Below preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.
In the high-performance transformer iron-core piece material that the present invention mentions, the main component of this iron core sheet material and percentage composition proportioning thereof are: iron powder 80%-90%, filler 8%-14%, and all the other are auxiliary agent, described iron core sheet material adopts powder rolling process to be prepared.
Further illustrate, the main component of iron core sheet material and percentage composition proportioning thereof are: iron powder 80%-84%, filler 10%-12%, and all the other are auxiliary agent; Iron powder is selected aerosol powder, and its average particle size is about 120-180 order; Filler comprises chromium powder, nickel powder, silica flour and molybdenum powder; In filler, the average particle size of chromium powder, nickel powder and molybdenum powder is about 325-400 order, and the average particle size of silica flour is about 200-225 order; Auxiliary agent mainly comprises plasticizer, lubricant and stabilizer.
The concrete preparation process of the high-performance transformer iron-core piece material that the present invention mentions is as follows:
A) the standby raw material of choosing, the main component of raw material and percentage composition proportioning thereof are: iron powder 80%, filler 12%, all the other are auxiliary agent; Wherein, iron powder is selected aerosol powder, and its average particle size is about 140-160 order; Filler comprises chromium powder, nickel powder, silica flour and molybdenum powder, and mass percent is about 2:2.5:4.5:1, and the average particle size of chromium powder, nickel powder and molybdenum powder is about 325-350 order, and the average particle size of silica flour is about 200-225 order; Plasticizer in auxiliary agent is selected microcrystalline wax, and lubricant is selected machine oil, and stabilizer is selected zinc stearate;
B) batch mixing, mixing equipment is selected horizontal ball mill, and Ball-milling Time is about 3 hours, and the temperature of ball mill is controlled at 85 ℃-90 ℃, and after ball milling, the divided by maximum granularity of powder is controlled at 100 order left and right;
C) rolling and heat treatment thereof, equipment choosing duo mill, the diameter of working roll is 50mm, the wide 80mm of roll surface; Powder is rolling at normal temperatures, and rolling mill speed 2.2m/min rolls seam and is controlled at 0.12mm, and the nip angle of powder is 7.5 °; Make sheet material density and be about 6.6 grams/cc, width is about 75mm, and thickness is about 0.2mm; Equipment for Heating Processing is selected middle temperature hydrogen furnace, and protective gas is selected high-purity Ar, and the Control for Kiln Temperature of hydrogen furnace is at 960 ℃-980 ℃, and heat treatment time is about 3 hours, is cooled in a vacuum room temperature after processing; Sheet material density after heat treatment can be promoted to 7.12 grams/cc;
D) calendering and heat treatment thereof, the cold sheet material calender of equipment choosing, after calendering process, the THICKNESS CONTROL of sheet material is at 0.15-0.16mm; Equipment for Heating Processing is selected high temperature hydrogen furnace, and protective gas is selected high-purity Ar, and the Control for Kiln Temperature of hydrogen furnace is at 1240 ℃-1250 ℃, and heat treatment time is about 2 hours, is cooled to room temperature after processing in stove; Sheet material density after heat treatment can be promoted to 7.35 grams/cc;
E) subsequent treatment, subsequent treatment comprise sheet material polishing, repair type processing, cutting and packing etc.
The present invention has disclosed a kind of high-performance transformer iron-core piece material, be characterized in: this lamination material component configuration rationally, filler adds proper, the operation of rolling is stable, structural transformation is abundant, the transformer core making performance aspect control and reduction eddy current loss is more outstanding, has effectively promoted the serviceability of transformer.
The above; it is only the specific embodiment of the present invention; but protection scope of the present invention is not limited to this; any those of ordinary skill in the art are in the disclosed technical scope of the present invention; the variation that can expect without creative work or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range that claims were limited.
Claims (7)
1. a high-performance transformer iron-core piece material, is characterized in that, the main component of this iron core sheet material and percentage composition proportioning thereof are: iron powder 80%-90%, filler 8%-14%, and all the other are auxiliary agent, described iron core sheet material adopts powder rolling process to be prepared.
2. high-performance transformer iron-core piece material according to claim 1, is characterized in that, the main component of described lamination and percentage composition proportioning thereof are: iron powder 80%-84%, filler 10%-12%, all the other are auxiliary agent.
3. high-performance transformer iron-core piece material according to claim 1, is characterized in that, described iron powder is selected aerosol powder, and its average particle size is about 120-180 order.
4. high-performance transformer iron-core piece material according to claim 1, is characterized in that, described filler comprises chromium powder, nickel powder, silica flour and molybdenum powder.
5. high-performance transformer iron-core piece material according to claim 4, is characterized in that, in described filler, the average particle size of chromium powder, nickel powder and molybdenum powder is about 325-400 order.
6. high-performance transformer iron-core piece material according to claim 4, is characterized in that, in described filler, the average particle size of silica flour is about 200-225 order.
7. high-performance transformer iron-core piece material according to claim 1, is characterized in that, described auxiliary agent mainly comprises plasticizer, lubricant and stabilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410377582.5A CN104183351A (en) | 2014-08-04 | 2014-08-04 | High-performance transformer iron core sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410377582.5A CN104183351A (en) | 2014-08-04 | 2014-08-04 | High-performance transformer iron core sheet |
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| Publication Number | Publication Date |
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| CN104183351A true CN104183351A (en) | 2014-12-03 |
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| CN201410377582.5A Pending CN104183351A (en) | 2014-08-04 | 2014-08-04 | High-performance transformer iron core sheet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107507689A (en) * | 2016-06-14 | 2017-12-22 | 有研稀土新材料股份有限公司 | The preparation method of high magnetic permeability absorbing material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1273611A (en) * | 1998-05-29 | 2000-11-15 | 住友特殊金属株式会社 | Method for producing high silicon steel and silicon steel |
| CN101886192A (en) * | 2010-06-23 | 2010-11-17 | 北京科技大学 | Method for preparing high-performance iron nickel magnetically soft alloy by using powder metallurgy process |
| US20110070119A1 (en) * | 2008-05-28 | 2011-03-24 | Deloro Stellite Holdings Corporation | Manufacture of composite components by powder metallurgy |
-
2014
- 2014-08-04 CN CN201410377582.5A patent/CN104183351A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1273611A (en) * | 1998-05-29 | 2000-11-15 | 住友特殊金属株式会社 | Method for producing high silicon steel and silicon steel |
| US20110070119A1 (en) * | 2008-05-28 | 2011-03-24 | Deloro Stellite Holdings Corporation | Manufacture of composite components by powder metallurgy |
| CN101886192A (en) * | 2010-06-23 | 2010-11-17 | 北京科技大学 | Method for preparing high-performance iron nickel magnetically soft alloy by using powder metallurgy process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107507689A (en) * | 2016-06-14 | 2017-12-22 | 有研稀土新材料股份有限公司 | The preparation method of high magnetic permeability absorbing material |
| CN107507689B (en) * | 2016-06-14 | 2019-08-13 | 有研稀土新材料股份有限公司 | The preparation method of high magnetic permeability absorbing material |
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Application publication date: 20141203 |