CN105047393A - Fabrication method for transformer silicon steel sheet - Google Patents
Fabrication method for transformer silicon steel sheet Download PDFInfo
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- CN105047393A CN105047393A CN201510395407.3A CN201510395407A CN105047393A CN 105047393 A CN105047393 A CN 105047393A CN 201510395407 A CN201510395407 A CN 201510395407A CN 105047393 A CN105047393 A CN 105047393A
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Abstract
The invention discloses a fabrication method for a transformer silicon steel sheet. The fabrication method comprises the following steps of: 1) selecting a silicon steel sheet raw material; 2) carrying out punching and forming; 3) carrying out integral annealing; 4) carrying out insulation treatment; 5) preparing a treating fluid; and 6) performing membrane coating. The fabrication method disclosed by the invention has the advantages of reasonable process arrangement, convenience in implementation and moderate cost, and the mechanical property of an iron core is stable.
Description
Technical field
The present invention relates to field transformer, particularly a kind of preparation method of transformer silicon steel sheet.
Background technology
Transformer is made according to electromagnetic induction principle, and closed iron core is wound with two windings, and one is primary winding, and another is auxiliary winding.In the transformer course of work, its power loss not only produces on the resistance of coil, also produces in the iron core after alternating current magnetization.People call the power loss in iron core " iron loss " usually, 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 then produces in perpendicular flux direction plane, and the energy of loss is all converted into heat energy, and equipment is heated up, efficiency reduces, and is unfavorable for the use of alternating current machine equipment.In order to reduce iron loss, existing iron core all selects soft magnetic material, and silicon steel sheet is widely used in the equipment such as motor, transformer, relay.
Although silicon steel sheet has control and reduces the effect of iron loss, also Shortcomings in control magnetic hysteresis loss, preparation cost is higher, limits serviceability and the useful life of transformer to a certain extent, and therefore, the performance of transformer core need to promote.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of preparation method of transformer silicon steel sheet,, this preparation method's procedure arrangement is reasonable, and preparation cost is moderate, obtained transformer core has good serviceability, to solve the above-mentioned multinomial defect caused in prior art.
For achieving the above object, the invention provides following technical scheme: a kind of preparation method of transformer silicon steel sheet, this preparation method comprises the steps:
1) the standby silicon steel sheet raw material of choosing, silicon steel sheet wherein silicone content is at least 18%;
2) punch forming, uses stamping machine silicon steel sheet to be struck out EI type, UI type or C type;
3) integrally annealed, uses annealing furnace to anneal;
4) insulation processing, puts into agitator by silicon steel sheet, pours the insulating varnish that mass percent is 1%-2% into, uniform stirring 40-45 minute; Then the silicon steel sheet after process is carried out drying process in the baking oven of 75 DEG C-80 DEG C, the processing time is 35-40 minute;
5) prepare treatment fluid, its percentage composition proportioning is: magnesium oxide 10%-12%, auxiliary agent 3%-5%, and all the other are solvent, first, by proportioning, magnesium oxide and solvent are added into reactor, uniform stirring 20-25 minute, temperature of reaction kettle controls at 40 DEG C-45 DEG C; Then, add auxiliary agent, continue to stir 10-15 minute, temperature of reaction kettle controls at about 50 DEG C;
6) aluminum coated steel, is added into silicon steel sheet and treatment fluid in centrifugal blender and carries out uniform stirring, and mixing time is 20-30 minute, and mixing drum temperature controls at 50 DEG C-55 DEG C; Then the silicon steel sheet after process is carried out drying process in the baking oven of 55 DEG C-65 DEG C, the processing time is 20 minutes.
Preferably, described step 5) in, the main component of magnesium oxide is MgO, SiO
2and Fe
2o
3, its percentage composition proportioning is: 92%:6.5%:1.5%; Solvent is formed by phosphoric acid, boric acid and acetic acid mixed preparing, and mixed proportion is: 3:3:2, and mixed concentration is 20%-25%; Interfacial agent in auxiliary agent selects Sodium perfluorooctanoate or perfluoro octyl sulfonic acid sodium; The complexing agent of natrium nitrosum and nitrous acid dicyclohexylamine selected by rust inhibitor.
Preferably, described step 6) in, the proportioning for the treatment of fluid and silicon steel sheet is according to the proportions of 1Kg silicon steel sheet and 50ml treatment fluid.
Preferably, described step 3) in, annealing process comprises the following steps:
A) silicon steel sheet of forming is hung on annealing frame, close fire door;
B) connect annealing furnace power supply, open heating;
C) be incubated;
D) open fire door, take out silicon steel sheet, normal temperature cools.
Preferably, described step b) in, annealing furnace is first warming up to 100 DEG C, continues 15min, then by the amplitude of 10 DEG C/min, is warming up to 580 DEG C, then by the amplitude of 5 DEG C/min, is warming up to 400 DEG C.
Preferably, described step c) in, when at least 50% silicon steel sheet temperature test point temperature reaches 370 DEG C-380 DEG C, be incubated, annealing furnace temperature is 200 DEG C, and temperature retention time is 40min-75min.
The beneficial effect of above technical scheme is adopted to be: preparation method's procedure arrangement of the present invention is reasonable, be easy to implement, moderate cost, obtained iron core stable mechanical property, especially Be very effective in the magnetic hysteresis loss controlling iron core, effectively improves useful life and the serviceability of transformer, efficiently solves this difficult problem of annealing of iron core, effectively control iron loss and exciting power 2 key parameters of iron core, substantially increase the stability of core annealing.
Embodiment
The following detailed description of the preferred embodiment of the present invention.
Embodiment 1:
A preparation method for transformer silicon steel sheet, this preparation method comprises the steps:
1) the standby silicon steel sheet raw material of choosing, silicon steel sheet wherein silicone content is 18%,
2) punch forming, uses stamping machine silicon steel sheet to be struck out EI type, UI type or C type;
3) integrally annealed, uses annealing furnace to anneal;
4) insulation processing, puts into agitator by silicon steel sheet, pours the insulating varnish that mass percent is 2% into, uniform stirring 45 minutes; Then the silicon steel sheet after process is carried out drying process in the baking oven of 80 DEG C, the processing time is 40 minutes;
5) prepare treatment fluid, its percentage composition proportioning is: magnesium oxide 12%, auxiliary agent 5%, and all the other are solvent, first, by proportioning, magnesium oxide and solvent is added into reactor, uniform stirring 25 minutes, and temperature of reaction kettle controls at 45 DEG C; Then, add auxiliary agent, continue stirring 15 minutes, temperature of reaction kettle controls at about 50 DEG C, and the main component of magnesium oxide is MgO, SiO
2and Fe
2o
3, its percentage composition proportioning is: 92%:6.5%:1.5%; Solvent is formed by phosphoric acid, boric acid and acetic acid mixed preparing, and mixed proportion is: 3:3:2, and mixed concentration is 25%; Interfacial agent in auxiliary agent selects Sodium perfluorooctanoate or perfluoro octyl sulfonic acid sodium; The complexing agent of natrium nitrosum and nitrous acid dicyclohexylamine selected by rust inhibitor;
6) aluminum coated steel, is added into silicon steel sheet and treatment fluid in centrifugal blender and carries out uniform stirring, and the proportioning for the treatment of fluid and silicon steel sheet is according to the proportions of 1Kg silicon steel sheet and 50ml treatment fluid, and mixing time is 30 minutes, and mixing drum temperature controls at 55 DEG C; Then the silicon steel sheet after process is carried out drying process in the baking oven of 55 DEG C-65 DEG C, the processing time is 20 minutes.
Annealing process comprises the following steps:
A) silicon steel sheet of forming is hung on annealing frame, close fire door;
B) connect annealing furnace power supply, open heating, annealing furnace is first warming up to 100 DEG C, continues 15min, then by the amplitude of 10 DEG C/min, is warming up to 580 DEG C, then by the amplitude of 5 DEG C/min, is warming up to 400 DEG C;
C) carry out insulation when at least 50% silicon steel sheet temperature test point temperature reaches 380 DEG C, be incubated, annealing furnace temperature is 200 DEG C, and temperature retention time is 75min;
D) open fire door, take out silicon steel sheet, normal temperature cools.
Embodiment 2:
A preparation method for transformer silicon steel sheet, this preparation method comprises the steps:
1) the standby silicon steel sheet raw material of choosing, silicon steel sheet wherein silicone content is 15%,
2) punch forming, uses stamping machine silicon steel sheet to be struck out EI type, UI type or C type;
3) integrally annealed, uses annealing furnace to anneal;
4) insulation processing, puts into agitator by silicon steel sheet, pours the insulating varnish that mass percent is about 1% into, uniform stirring 40 minutes; Then the silicon steel sheet after process is carried out drying process in the baking oven of 75 DEG C, the processing time is about 35 minutes;
5) prepare treatment fluid, its percentage composition proportioning is: magnesium oxide 10%, auxiliary agent 3%, and all the other are solvent, first, by proportioning, magnesium oxide and solvent is added into reactor, uniform stirring 20 minutes, and temperature of reaction kettle controls at 40 DEG C; Then, add auxiliary agent, continue stirring 10 minutes, temperature of reaction kettle controls at about 50 DEG C, and the main component of magnesium oxide is MgO, SiO
2and Fe
2o
3, its percentage composition proportioning is about: 92%:6.5%:1.5%; Solvent is formed by phosphoric acid, boric acid and acetic acid mixed preparing, and mixed proportion is about: 3:3:2, and mixed concentration is about 20%; Interfacial agent in auxiliary agent selects Sodium perfluorooctanoate or perfluoro octyl sulfonic acid sodium; The complexing agent of natrium nitrosum and nitrous acid dicyclohexylamine selected by rust inhibitor;
6) aluminum coated steel, is added into silicon steel sheet and treatment fluid in centrifugal blender and carries out uniform stirring, and the proportioning for the treatment of fluid and silicon steel sheet is according to the proportions of 1Kg silicon steel sheet and 50ml treatment fluid, and mixing time is about 20 minutes, and mixing drum temperature controls at 50 DEG C; Then the silicon steel sheet after process is carried out drying process in the baking oven of 55 DEG C, the processing time is 20 minutes.
Annealing process comprises the following steps:
A) silicon steel sheet of forming is hung on annealing frame, close fire door;
B) connect annealing furnace power supply, open heating, annealing furnace is first warming up to 100 DEG C, continues 15min, then by the amplitude of 10 DEG C/min, is warming up to 580 DEG C, then by the amplitude of 5 DEG C/min, is warming up to 400 DEG C;
C) carry out insulation when at least 50% silicon steel sheet temperature test point temperature reaches 370 DEG C, be incubated, annealing furnace temperature is 200 DEG C, and temperature retention time is 40min;
D) open fire door, take out silicon steel sheet, normal temperature cools.
Embodiment 3:
A preparation method for transformer silicon steel sheet, this preparation method comprises the steps:
1) the standby silicon steel sheet raw material of choosing, silicon steel sheet wherein silicone content is 17%,
2) punch forming, uses stamping machine silicon steel sheet to be struck out EI type, UI type or C type;
3) integrally annealed, uses annealing furnace to anneal;
4) insulation processing, puts into agitator by silicon steel sheet, pours the insulating varnish that mass percent is 1.5% into, uniform stirring 42 minutes; Then the silicon steel sheet after process is carried out drying process in the baking oven of 78 DEG C, the processing time is 38 minutes;
5) prepare treatment fluid, its percentage composition proportioning is: magnesium oxide 11%, auxiliary agent 4%, and all the other are solvent, first, by proportioning, magnesium oxide and solvent is added into reactor, uniform stirring 23 minutes, and temperature of reaction kettle controls at 42 DEG C; Then, add auxiliary agent, continue stirring 12 minutes, temperature of reaction kettle controls at about 50 DEG C, and the main component of magnesium oxide is MgO, SiO
2and Fe
2o
3, its percentage composition proportioning is: 92%:6.5%:1.5%; Solvent is formed by phosphoric acid, boric acid and acetic acid mixed preparing, and mixed proportion is: 3:3:2, and mixed concentration is 23%; Interfacial agent in auxiliary agent selects Sodium perfluorooctanoate or perfluoro octyl sulfonic acid sodium; The complexing agent of natrium nitrosum and nitrous acid dicyclohexylamine selected by rust inhibitor;
6) aluminum coated steel, is added into silicon steel sheet and treatment fluid in centrifugal blender and carries out uniform stirring, and the proportioning for the treatment of fluid and silicon steel sheet is according to the proportions of 1Kg silicon steel sheet and 50ml treatment fluid, and mixing time is 25 minutes, and mixing drum temperature controls at 52 DEG C; Then the silicon steel sheet after process is carried out drying process in the baking oven of 60 DEG C, the processing time is 20 minutes.
Annealing process comprises the following steps:
A) silicon steel sheet of forming is hung on annealing frame, close fire door;
B) connect annealing furnace power supply, open heating, annealing furnace is first warming up to 100 DEG C, continues 15min, then by the amplitude of 10 DEG C/min, is warming up to 580 DEG C, then by the amplitude of 5 DEG C/min, is warming up to 400 DEG C;
C) carry out insulation when at least 50% silicon steel sheet temperature test point temperature reaches 375 DEG C, be incubated, annealing furnace temperature is 200 DEG C, and temperature retention time is 58min;
D) open fire door, take out silicon steel sheet, normal temperature cools.
Preparation method's procedure arrangement of the present invention is reasonable, be easy to implement, moderate cost, obtained iron core stable mechanical property, especially Be very effective in the magnetic hysteresis loss controlling iron core, effectively improves useful life and the serviceability of transformer, efficiently solves this difficult problem of annealing of iron core, effectively control iron loss and exciting power 2 key parameters of iron core, substantially increase the stability of core annealing.
Above-described is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, and without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (6)
1. a preparation method for transformer silicon steel sheet, is characterized in that, this preparation method comprises the steps:
1) the standby silicon steel sheet raw material of choosing, silicon steel sheet wherein silicone content is at least 18%;
2) punch forming, uses stamping machine silicon steel sheet to be struck out EI type, UI type or C type;
3) integrally annealed, uses annealing furnace to anneal;
4) insulation processing, puts into agitator by silicon steel sheet, pours the insulating varnish that mass percent is 1%-2% into, uniform stirring 40-45 minute; Then the silicon steel sheet after process is carried out drying process in the baking oven of 75 DEG C-80 DEG C, the processing time is 35-40 minute;
5) prepare treatment fluid, its percentage composition proportioning is: magnesium oxide 10%-12%, auxiliary agent 3%-5%, and all the other are solvent, first, by proportioning, magnesium oxide and solvent are added into reactor, uniform stirring 20-25 minute, temperature of reaction kettle controls at 40 DEG C-45 DEG C; Then, add auxiliary agent, continue to stir 10-15 minute, temperature of reaction kettle controls at about 50 DEG C;
6) aluminum coated steel, is added into silicon steel sheet and treatment fluid in centrifugal blender and carries out uniform stirring, and mixing time is 20-30 minute, and mixing drum temperature controls at 50 DEG C-55 DEG C; Then the silicon steel sheet after process is carried out drying process in the baking oven of 55 DEG C-65 DEG C, the processing time is 20 minutes.
2. the preparation method of transformer silicon steel sheet according to claim 1, is characterized in that, described step 5) in, the main component of magnesium oxide is MgO, SiO
2and Fe
2o
3, its percentage composition proportioning is: 92%:6.5%:1.5%; Solvent is formed by phosphoric acid, boric acid and acetic acid mixed preparing, and mixed proportion is: 3:3:2, and mixed concentration is 20%-25%; Interfacial agent in auxiliary agent selects Sodium perfluorooctanoate or perfluoro octyl sulfonic acid sodium; The complexing agent of natrium nitrosum and nitrous acid dicyclohexylamine selected by rust inhibitor.
3. the preparation method of transformer silicon steel sheet according to claim 1, is characterized in that, described step 6) in, the proportioning for the treatment of fluid and silicon steel sheet is according to the proportions of 1Kg silicon steel sheet and 50ml treatment fluid.
4. the preparation method of transformer silicon steel sheet according to claim 1, is characterized in that, described step 3) in, annealing process comprises the following steps:
A) silicon steel sheet of forming is hung on annealing frame, close fire door;
B) connect annealing furnace power supply, open heating;
C) be incubated;
D) open fire door, take out silicon steel sheet, normal temperature cools.
5. the preparation method of transformer silicon steel sheet according to claim 4, is characterized in that, described step b) in, annealing furnace is first warming up to 100 DEG C, continues 15min, then by the amplitude of 10 DEG C/min, be warming up to 580 DEG C, then by the amplitude of 5 DEG C/min, be warming up to 400 DEG C.
6. the preparation method of transformer silicon steel sheet according to claim 4, is characterized in that, described step c) in, when at least 50% silicon steel sheet temperature test point temperature reaches 370 DEG C-380 DEG C, be incubated, annealing furnace temperature is 200 DEG C, and temperature retention time is 40min-75min.
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| CN201510395407.3A CN105047393A (en) | 2015-07-03 | 2015-07-03 | Fabrication method for transformer silicon steel sheet |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886203A (en) * | 2010-06-29 | 2010-11-17 | 京山县华尔靓实业有限公司 | Silicon iron product with low content of nitrogen |
| CN103397361A (en) * | 2013-08-12 | 2013-11-20 | 无锡光旭新材料科技有限公司 | Method for preparing high-silicon non-oriented silicon steel |
| CN103849822A (en) * | 2012-12-03 | 2014-06-11 | 坦普尔钢铁公司 | Cold rolled motor lamination electrical steels with reduced aging and improved electrical properties |
| CN104183381A (en) * | 2014-08-04 | 2014-12-03 | 太仓市武锋金属制品有限公司 | Preparation method of transformer iron core |
| CN104174853A (en) * | 2014-08-04 | 2014-12-03 | 太仓市武锋金属制品有限公司 | Method for preparing high-performance transformer core sheet |
-
2015
- 2015-07-03 CN CN201510395407.3A patent/CN105047393A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886203A (en) * | 2010-06-29 | 2010-11-17 | 京山县华尔靓实业有限公司 | Silicon iron product with low content of nitrogen |
| CN103849822A (en) * | 2012-12-03 | 2014-06-11 | 坦普尔钢铁公司 | Cold rolled motor lamination electrical steels with reduced aging and improved electrical properties |
| CN103397361A (en) * | 2013-08-12 | 2013-11-20 | 无锡光旭新材料科技有限公司 | Method for preparing high-silicon non-oriented silicon steel |
| CN104183381A (en) * | 2014-08-04 | 2014-12-03 | 太仓市武锋金属制品有限公司 | Preparation method of transformer iron core |
| CN104174853A (en) * | 2014-08-04 | 2014-12-03 | 太仓市武锋金属制品有限公司 | Method for preparing high-performance transformer core sheet |
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