CN105185503A - Electrical steel plate and fabrication method thereof - Google Patents
Electrical steel plate and fabrication method thereof Download PDFInfo
- Publication number
- CN105185503A CN105185503A CN201510616946.5A CN201510616946A CN105185503A CN 105185503 A CN105185503 A CN 105185503A CN 201510616946 A CN201510616946 A CN 201510616946A CN 105185503 A CN105185503 A CN 105185503A
- Authority
- CN
- China
- Prior art keywords
- sheet
- electrical sheet
- electrical
- matrix
- score groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention provides an electrical steel plate and a fabrication method thereof. The electrical steel plate comprises a plate-shaped electrical steel substrate, etched grooves on the surface of the substrate, pits distributed on the surface of the etched grooves and Na2SiO3 or Na2SiO3.9H2O fixedly dissolved in the surface of the substrate, wherein the thickness of the substrate is 0.1 to 2 millimeters, and the diameter of the pits is 1 to 100 nanometers. The fabrication method comprises the following steps of: 1) carrying out laser etching treatment; 2) processing the etched grooves with a NaOH solution; and 3) carrying out washing and drying treatment. The electrical steel plate fabricated according to the invention has excellent heat resistant effect, the iron loss reduction effect generated by laser etching cannot be disappeared by annealing processing the electrical steel plate for 2 hours at 800 DEG C, the original magnetic performance is maintained, and moreover, an insulation coating layer on the surface of silicon steel cannot be damaged. The fabrication method is simple in operation and low is cost, and is applicable for industrial production at a large scale.
Description
Technical field
The present invention relates to a kind of power transformer orientation silicon steel, be specifically related to a kind of electrical sheet sheet material and preparation method thereof.
Background technology
In recent years, people attempt more laser technology to be applied in the technical research of refinement magnetic domain.Rauscher etc. use continuous CO
2laser and high energy light fibre laser carry out laser scored to grain-oriented Si steel sheet, and high energy light fibre laser makes iron loss reduce about 13%, and silicon steel sheet surface nondestructive wound.Yang Yuling etc. adopt nitride laser method to carry out local wire nitrogen treatment to orientation silicon steel surface, have studied the impact of laser technical parameters on surface of silicon steel nitride formation, have invented the continuous CO of employing
2the orientation silicon steel laser local surface alloyage process of laser, this method significantly improves the high-temperature aging of orientation silicon steel while reducing iron loss.The defect of the method is complex process and cost is higher.
As improvement, Sun Feng waits so long and further provides with continuous CO
2nitride laser optimizes magnetic domain location mode, under air atmosphere, with the continuous CO of focusing of suitable nitrogen molecular bundle and certain power
2laser beam is simultaneously coaxial vertically acts on surface of silicon steel, can form the iron nitride with high-temperature stability in interaction zone, defines the new crystal boundary that Absorbable organic halogens optimizes the distribution of refinement main farmland, comprehensively improves the performance of orientation silicon steel.This technique makes the name oriented iron loss of silicon steel sheet reduction of the Z102 of 0.23mm thickness reach 23%, and working temperature is up to 1000 DEG C.
Subsequently, the laser scoring technique with thermal endurance also obtain interim progress.Gloomy towering, the Zhu Hong of Zan etc. utilizes nanosecond and femtosecond laser process equipment to continue the heat-resisting laser scoring technique test of in-depth, and result shows that core loss value reduces amplitude along with ultraviolet femtosecond laser scanning times or scanning energy and increases and increase gradually.If adopt ultraviolet femtosecond laser-hcl corrosion mode process orientation silicon steel surface further, the effect of good heat resistance and higher iron loss reduction amplitude can be reached.Li Haijiao etc. optimize the laser scored technological parameter of Nd:YAG, adopt operating current 12A, laser frequency 3500Hz, the optimal processing parameter of indentation speed 800mm/s, and the iron loss of 120 name oriented silicon steel can be made to reduce by 9.45%.Have studied laser scored input current size to the impact of orientation silicon steel surface insulation coating, and after analyzing indentation, sample temperature core loss value more than 500 DEG C can reply rising simultaneously.
Baosteel proposes and a kind ofly carries out laser scored method in oriented silicon steel band steel upper and lower surface simultaneously in patent of invention, rule in the band steel upper and lower surface run by the continuous-wave laser beam of high order focusing, upper and lower surface line of weakness adopts equidistantly staggered form to ensure indentation uniform in effect simultaneously.
But existing laser scoring technique does not have a thermal endurance, and the silicon steel product namely after laser scored process, cannot carry out stress relief annealing process to it, and annealing can cause its iron loss to rise, return to laser scored before.The indentation electrical steel product that prior art cannot realize can not be applied to Wound iron-core transformer or need the iron core bent silicon steel product to carry out the field of annealing in process.
Summary of the invention
The object of this invention is to provide a kind of electrical sheet sheet material and preparation method thereof, overcome the laser scored electric steel plate section product that the deficiencies in the prior art obtain having excellent heat resistance.
To achieve these goals, the present invention is by the following technical solutions:
A kind of electrical sheet sheet material, described electrical sheet sheet material comprises tabular electrical sheet matrix, the score groove of described matrix surface, the pit of described score groove surface distributed and is solid-solution in the Na of described matrix surface
2siO
3or Na
2siO
39H
2o, the thickness of described matrix is 0.1 ~ 2mm, and namely the thickness of electrical sheet matrix can be 0.1mm, 0.15mm, 0.18mm, 0.23mm, 0.27mm, 0.30mm, 0.5mm, 0.7mm, 0.8mm, 1mm, 1.5mm or 2mm etc., the diameter of described pit is 1 ~ 100nm, namely the diameter of pit can be 1nm, 5nm, 10nm, 20nm, 50nm, 70nm or 100nm etc.
First preferred version of described electrical sheet sheet material, the thickness of described electrical sheet matrix is 0.18 ~ 0.30mm.
Second preferred version of described electrical sheet sheet material, the thickness of described electrical sheet matrix is 0.18mm.
3rd preferred version of described electrical sheet sheet material, the width of described score groove is 0.05 ~ 0.5mm, is spaced apart 1 ~ 20mm.The width of score groove can be 0.05mm, 0.08mm, 0.1mm, 0.2mm, 0.3mm or 0.5mm etc., and interval can be 1mm, 2mm, 4mm, 5mm, 8mm, 10mm, 12mm, 15mm, 16mm or 20mm etc.
4th preferred version of described electrical sheet sheet material, described pit distribution is even.
5th preferred version of described electrical sheet sheet material, the diameter of described pit is 20 ~ 100nm.
6th preferred version of described electrical sheet sheet material, the diameter of described pit is 20nm.
7th preferred version of described electrical sheet sheet material, the gross area of described pit accounts for 20 ~ 70% of described score groove surface area.The gross area of pit can account for 20%, 30%, 40%, 50%, 60% or 70% of described score groove surface area etc.
8th preferred version of described electrical sheet sheet material, the gross area of described pit accounts for 30% of described score groove surface area.
A preparation method for described electrical sheet sheet material, described method comprises the steps:
1) laser scored process: adopt CO
2laser or Nd-YAG laser carry out laser scored process to electrical sheet matrix, obtain the electrical sheet matrix with score groove, and untreated electrical sheet matrix is silicon steel;
2) NaOH solution process score groove: etch step 1) gained score groove, the SiO on NaOH and described score groove surface
2reaction generates the Na being solid-solution in described electrical sheet matrix surface
2siO
3or Na
2siO
39H
2o, and be SiO originally in described score groove surface
2position formed pit;
3) rinsing step 2) gained electrical sheet sheet material drying.
First optimal technical scheme of the preparation method of described electrical sheet sheet material, step 2) described in NaOH solution process score groove comprise with NaOH solution submergence electrical sheet matrix or be sprayed on electrical sheet matrix surface by NaOH solution.
Should be understood that and adopt the acid solutions such as HCl compared to existing technology, the present invention adopts NaOH solution to corrode score groove, NaOH solution not with the Fe element reaction in the matrix of electrical sheet sheet material, be conducive to ensureing the smooth and complete of matrix.Especially, for the electrical sheet of high standard, the acid solution corrosion that prior art adopts very easily causes the matrix destroying electrical sheet sheet material.The present invention adopts NaOH solution, can realize the corrosion of the score groove of the electrical sheet to high standard, such as, and 0.18mm electrical sheet, or even 0.15mm.
Second optimal technical scheme of the preparation method of described electrical sheet sheet material, step 2) described in the process conditions of NaOH solution process score groove comprise: under normal temperature, take mass concentration as the NaOH solution corrosion 2 ~ 10min of 10 ~ 20%.NaOH solution mass concentration can be 10%, 12%, 15%, 17% or 20% etc., and etching time can be 10min, 8min, 6min, 4min or 2min etc.
3rd optimal technical scheme of the preparation method of described electrical sheet sheet material, step 2) described in the process conditions of NaOH solution process score groove comprise: electrical sheet matrix is incubated 3 ~ 10min at 50 ~ 150 DEG C, then is the NaOH solution corrosion 2 ~ 10min of 0.5 ~ 9.9% with mass concentration.Heating-up temperature can be 50 DEG C, 70 DEG C, 80 DEG C, 100 DEG C, 120 DEG C or 150 DEG C etc.NaOH solution mass concentration can be 0.5%, 1%, 2%, 5%, 7% or 9.9% etc., and etching time can be 10min, 8min, 6min, 4min or 2min etc.
Due to the Fe element reaction in the matrix of solution and electrical sheet sheet material when should be understood that the corrosion of acid solution in prior art, thus generally do not heat, in case the aggravation that acid solution and Fe react, corrosion efficiency is low.And the NaOH solution of the embodiment of the present invention not with the Fe element reaction in the matrix of electrical sheet sheet material, thus can electrical sheet matrix be heated, with improve reaction rate thus improve corrosion efficiency, thus improve industrial production efficiency.Select suitable NaOH solution concentration and heating-up temperature, good corrosive effect and speed can be obtained.To elaborate hereinafter.Same, the present invention can also heat NaOH solution, is not construed as limiting this.
In addition, the SiO on NaOH and score groove surface
2reaction generates Na
2siO
3or Na
2siO
39H
2o, is solid-solution in electrical sheet matrix surface, can strengthen the insulating properties of electrical sheet, is conducive to it and is applied in transformer.Meanwhile, the Na of matrix is solid-solution in
2siO
3or Na
2siO
39H
2o can improve the intensity of electrical sheet.
4th optimal technical scheme of the preparation method of described electrical sheet sheet material, step 2) described in the process conditions of NaOH solution process score groove comprise: electrical sheet matrix is incubated 3min at 80 DEG C, then is the NaOH solution corrosion 4min of 5% with mass concentration.
5th optimal technical scheme of the preparation method of described electrical sheet sheet material, step 3) described flushing weakly acidic solution, neutral salt solution or clear water, the time is 2 ~ 4min; Described oven dry is in normal temperature.
Should be understood that in the present invention, adopt the mode on surface NaOH solution being sprayed to electrical sheet sheet material, in the industrial production of reality, spray solution can be realized by simple equipment, can reduce the requirement to production site size and protective equipment, reduces production cost.
The pit distribution on described electrical sheet sheet material score groove surface more even, the effect of the dislocation near its pinning pit is better, iron loss can be remained on reduced levels when electrical sheet heats.The specification of electrical sheet sheet material is that 0.18mm is thick, heating-up temperature 80 DEG C, NaOH solution mass concentration 5%, and under etching time 6min condition, size (being about 20nm) and the distribution of corroding the pit of the score groove of the electrical sheet sheet material obtained are the most even.The gross area of pit accounts for 30% of the gross area on the surface of score groove.Pit can the dislocation of pinning near it, hinders dislocation motion, obtain highdensity dislocation near pit.Form subgrain structure at pit edge place, crystal boundary makes steel when heating anneal, and dislocation is difficult to motion, is difficult to reply.Thus, even if under high-temperature heating state, pit and the neighbouring tension stress formed due to indentation process unattenuated, the magnetic domain of refinement can not become thick because of heating, thus keeps the iron loss of reduced levels.
With immediate prior art ratio, tool of the present invention has the following advantages:
1) the electrical sheet sheet material that prepared by the present invention has corrosion pit in score groove surface distributed, and then produce strong pinning effect at indentation place, stop magnetic domain wall moving or rotation, make it have excellent thermal endurance, annealing in process 2h at 800 DEG C, reduce effect by the iron loss of laser scored generation can not disappear, substantially remain original magnetic property;
2) the electrical sheet sheet material that prepared by the present invention can be applicable to Wound iron-core transformer or needs the iron core manufacture etc. bent silicon steel product must carry out the field of annealing in process to the iron core made;
3) in preparation method of the present invention NaOH can not with the insulating coating generation chemical reaction on electrical sheet surface, can not destroy insulating coating, do not affect its insulation property, preparation process is simple to operate, is applicable to large-scale industrial production.
Accompanying drawing explanation
Fig. 1: the schematic diagram of electrical sheet sheet material of the present invention
Fig. 2: the preparation flow figure of electrical sheet sheet material of the present invention
Wherein:
1 electrical sheet matrix
2 score groove
3 pits
Embodiment
For better the present invention being described, be convenient to understand technical scheme of the present invention, typical but non-limiting embodiment of the present invention is as follows:
Embodiment 1
Raw material adopt the electrical sheet sheet material after laser scored process, and its specification is that 0.18mm is thick.Sheet material is heated to 80 DEG C, insulation 3min, is that the NaOH solution of 5% is sprayed to its surface by solution concentration, keeps 6min, form Na at grooved inner surface
2siO
39H
2o product, pit diameter size is about 20nm, and pit area accounts for 30% of the grooved inner surface gross area, utilizes clear water to rinse its surface, and washing time is 2min, carries out drying and processing at normal temperatures.
First magnetism testing is carried out to the electrical sheet sample of preparation, then sample at 800 DEG C, insulation 2h annealing in process, again carry out magnetism testing, test result is as shown in table 5.As shown in Table 5, raw material property retention after NaOH process is constant, and through at 800 DEG C, after insulation 2h annealing in process, the basic and material initial performance of magnetic property is consistent.
Table 5 magnetism testing Comparative result
Embodiment 2
Raw material adopt the electrical sheet sheet material after laser scored process, and its specification is that 0.27mm is thick.Under normal temperature state, it being immersed completely solution concentration is in the NaOH solution of 10%, keeps 2min then to take out, forms Na at grooved inner surface
2siO
3product, pit diameter size is about 30nm, and pit area accounts for 40% of the grooved inner surface gross area, utilizes clear water to rinse its surface, and washing time is 2min, carries out drying and processing at normal temperatures.
First magnetism testing is carried out to the electrical sheet sample of preparation, then sample at 800 DEG C, insulation 2h annealing in process, again carry out magnetism testing, test result is as shown in table 6.As shown in Table 6, raw material property retention after NaOH process is constant, and through at 800 DEG C, after insulation 2h annealing in process, the basic and material initial performance of magnetic property is consistent.
Table 6 magnetism testing Comparative result
Embodiment 3
Raw material adopt the electrical sheet sheet material after laser scored process, and its specification is that 0.30mm is thick.Under normal temperature state, it being immersed completely solution concentration is in the NaOH solution of 15%, keeps 5min then to take out, forms Na at grooved inner surface
2siO
3product, pit diameter size is about 60nm, and pit area accounts for 50% of the grooved inner surface gross area, utilizes clear water to rinse its surface, and washing time is 2min, carries out drying and processing at normal temperatures.
First magnetism testing is carried out to the electrical sheet sample of preparation, then sample at 800 DEG C, insulation 2h annealing in process, again carry out magnetism testing, test result is as shown in table 7.As shown in Table 7, raw material property retention after NaOH process is constant, and through at 800 DEG C, after insulation 2h annealing in process, the basic and material initial performance of magnetic property is consistent.
Table 7 magnetism testing Comparative result
Embodiment 4
Raw material adopt the electrical sheet sheet material after laser scored process, and its specification is that 0.30mm is thick.Under normal temperature state, it being immersed completely solution concentration is in the NaOH solution of 20%, keeps 2min then to take out, forms Na at grooved inner surface
2siO
3product, pit diameter size is about 100nm, and pit area accounts for 67% of the grooved inner surface gross area, utilizes clear water to rinse its surface, and washing time is 2min, carries out drying and processing at normal temperatures.
First magnetism testing is carried out to the electrical sheet sample of preparation, then sample at 800 DEG C, insulation 2h annealing in process, again carry out magnetism testing, test result is as shown in table 8.As shown in Table 8, raw material property retention after NaOH process is constant, and through at 800 DEG C, after insulation 2h annealing in process, the basic and material initial performance of magnetic property is consistent.
Table 8 magnetism testing Comparative result
Embodiment 5
Raw material adopt the electrical sheet sheet material after laser scored process, and its specification is that 0.23mm is thick.Sheet material is heated to 100 DEG C, insulation 6min, is that the NaOH solution of 6.5% is sprayed to its surface by solution concentration, keeps 5min, form Na at grooved inner surface
2siO
39H
2o product, pit diameter size is about 100nm, and pit area accounts for 70% of the grooved inner surface gross area, utilizes clear water to rinse its surface, and washing time is 2min, carries out drying and processing at normal temperatures.
First magnetism testing is carried out to the electrical sheet sample of preparation, then sample at 800 DEG C, insulation 2h annealing in process, again carry out magnetism testing, test result is as shown in table 9.As shown in Table 9, raw material property retention after NaOH process is constant, and through at 800 DEG C, after insulation 2h annealing in process, the basic and material initial performance of magnetic property is consistent.
Table 9 magnetism testing Comparative result
Embodiment 6
Raw material adopt the electrical sheet sheet material after laser scored process, and its specification is that 0.23mm is thick.Sheet material is heated to 150 DEG C, insulation 3min, is that the NaOH solution of 9.9% is sprayed to its surface by solution concentration, keeps 2min, form Na at grooved inner surface
2siO
39H
2o product, pit diameter size is about 80nm, and pit area accounts for 45% of the grooved inner surface gross area, utilizes clear water to rinse its surface, and washing time is 2min, carries out drying and processing at normal temperatures.
First magnetism testing is carried out to the electrical sheet sample of preparation, then sample at 800 DEG C, insulation 2h annealing in process, again carry out magnetism testing, test result is as shown in table 10.As shown in Table 10, raw material property retention after NaOH process is constant, and through at 800 DEG C, after insulation 2h annealing in process, the basic and material initial performance of magnetic property is consistent.
Table 10 magnetism testing Comparative result
Embodiment 7
Raw material adopt the electrical sheet sheet material after laser scored process, and its specification is that 0.23mm is thick.Sheet material is heated to 50 DEG C, insulation 3min, is that the NaOH solution of 0.5% is sprayed to its surface by solution concentration, keeps 10min, form Na at grooved inner surface
2siO
39H
2o product, pit diameter size is about 50nm, and pit area accounts for 60% of the grooved inner surface gross area, utilizes clear water to rinse its surface, and washing time is 2min, carries out drying and processing at normal temperatures.
First magnetism testing is carried out to the electrical sheet sample of preparation, then sample at 800 DEG C, insulation 2h annealing in process, again carry out magnetism testing, test result is as shown in table 11.As shown in Table 11, raw material property retention after NaOH process is constant, and through at 800 DEG C, after insulation 2h annealing in process, the basic and material initial performance of magnetic property is consistent.
Table 11 magnetism testing Comparative result
Above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; those of ordinary skill in the field are to be understood that; can modify to the specific embodiment of the present invention with reference to above-described embodiment or equivalent to replace, these do not depart from any amendment of spirit and scope of the invention or equivalently to replace within the claims that all awaits the reply in application.
Claims (15)
1. an electrical sheet sheet material, is characterized in that, described electrical sheet sheet material comprises tabular electrical sheet matrix, the score groove of described matrix surface, the pit of described score groove surface distributed and is solid-solution in the Na of described matrix surface
2siO
3or Na
2siO
39H
2o, the thickness of described matrix is 0.1 ~ 2mm, and the diameter of described pit is 1 ~ 100nm.
2. electrical sheet sheet material according to claim 1, is characterized in that, the thickness of described electrical sheet matrix is 0.18 ~ 0.30mm.
3. electrical sheet sheet material according to claim 2, is characterized in that, the thickness of described electrical sheet matrix is 0.18mm.
4. electrical sheet sheet material according to claim 1, is characterized in that, the width of described score groove is 0.05 ~ 0.5mm, is spaced apart 1 ~ 20mm.
5. electrical sheet sheet material according to claim 1, is characterized in that, described pit distribution is even.
6. electrical sheet sheet material according to claim 1, is characterized in that, the diameter of described pit is 20 ~ 100nm.
7. electrical sheet sheet material according to claim 6, is characterized in that, the diameter of described pit is 20nm.
8. electrical sheet sheet material according to claim 1, is characterized in that, the gross area of described pit accounts for 20 ~ 70% of described score groove surface area.
9. electrical sheet sheet material according to claim 8, is characterized in that, the gross area of described pit accounts for 30% of described score groove surface area.
10. a preparation method for the arbitrary described electrical sheet sheet material of claim 1-9, it is characterized in that, described method comprises the steps:
1) laser scored process: laser scored process electrical sheet matrix, obtains the electrical sheet matrix with score groove;
2) NaOH solution process score groove: etch step 1) gained score groove, the SiO on NaOH and described score groove surface
2reaction generates the Na being solid-solution in described electrical sheet matrix surface
2siO
3or Na
2siO
39H
2o, and form pit in described score groove surface;
3) rinsing step 2) gained electrical sheet sheet material drying.
The preparation method of 11. electrical sheet sheet materials according to claim 10, is characterized in that, step 2) described in NaOH solution process score groove comprise with NaOH solution submergence electrical sheet matrix or be sprayed on electrical sheet matrix surface by NaOH solution.
The preparation method of 12. electrical sheet sheet materials according to claim 10, it is characterized in that, step 2) described in the process conditions of NaOH solution process score groove comprise: under normal temperature, take mass concentration as the NaOH solution corrosion 2 ~ 10min of 10 ~ 20%.
The preparation method of 13. electrical sheet sheet materials according to claim 10, it is characterized in that, step 2) described in the process conditions of NaOH solution process score groove comprise: electrical sheet matrix is incubated 3 ~ 10min at 50 ~ 150 DEG C, then is the NaOH solution corrosion 2 ~ 10min of 0.5 ~ 9.9% with mass concentration.
The preparation method of 14. electrical sheet sheet materials according to claim 13, it is characterized in that, step 2) described in the process conditions of NaOH solution process score groove comprise: electrical sheet matrix is incubated 3min at 80 DEG C, then is the NaOH solution corrosion 4min of 5% with mass concentration.
The preparation method of 15. electrical sheet sheet materials according to claim 10, is characterized in that, step 3) described flushing weakly acidic solution, neutral salt solution or clear water, the time is 2 ~ 4min; Described oven dry is in normal temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510616946.5A CN105185503B (en) | 2015-09-24 | 2015-09-24 | A kind of electrical sheet sheet material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510616946.5A CN105185503B (en) | 2015-09-24 | 2015-09-24 | A kind of electrical sheet sheet material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105185503A true CN105185503A (en) | 2015-12-23 |
| CN105185503B CN105185503B (en) | 2018-01-19 |
Family
ID=54907523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510616946.5A Active CN105185503B (en) | 2015-09-24 | 2015-09-24 | A kind of electrical sheet sheet material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105185503B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113564321A (en) * | 2021-07-09 | 2021-10-29 | 首钢智新迁安电磁材料有限公司 | Magnetic domain refining method and application of oriented silicon steel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4750949A (en) * | 1984-11-10 | 1988-06-14 | Nippon Steel Corporation | Grain-oriented electrical steel sheet having stable magnetic properties resistant to stress-relief annealing, and method and apparatus for producing the same |
| CN1216072A (en) * | 1997-01-24 | 1999-05-05 | 新日本制铁株式会社 | Grain-oriented electrical steel sheet having excellent magnetic characteristics, its mfg. method and its mfg. device |
| CN101979676A (en) * | 2010-11-26 | 2011-02-23 | 武汉钢铁(集团)公司 | Method for improving magnetic property of oriented silicon steel through laser scribing |
| CN103097557A (en) * | 2010-09-09 | 2013-05-08 | 新日铁住金株式会社 | Oriented electromagnetic steel sheet and process for production thereof |
| CN204904951U (en) * | 2015-09-24 | 2015-12-23 | 国网智能电网研究院 | Electric steel sheets and strips material |
-
2015
- 2015-09-24 CN CN201510616946.5A patent/CN105185503B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4750949A (en) * | 1984-11-10 | 1988-06-14 | Nippon Steel Corporation | Grain-oriented electrical steel sheet having stable magnetic properties resistant to stress-relief annealing, and method and apparatus for producing the same |
| CN1216072A (en) * | 1997-01-24 | 1999-05-05 | 新日本制铁株式会社 | Grain-oriented electrical steel sheet having excellent magnetic characteristics, its mfg. method and its mfg. device |
| CN103097557A (en) * | 2010-09-09 | 2013-05-08 | 新日铁住金株式会社 | Oriented electromagnetic steel sheet and process for production thereof |
| CN101979676A (en) * | 2010-11-26 | 2011-02-23 | 武汉钢铁(集团)公司 | Method for improving magnetic property of oriented silicon steel through laser scribing |
| CN204904951U (en) * | 2015-09-24 | 2015-12-23 | 国网智能电网研究院 | Electric steel sheets and strips material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113564321A (en) * | 2021-07-09 | 2021-10-29 | 首钢智新迁安电磁材料有限公司 | Magnetic domain refining method and application of oriented silicon steel |
| CN113564321B (en) * | 2021-07-09 | 2024-04-12 | 首钢智新迁安电磁材料有限公司 | Magnetic domain refining method and application of oriented silicon steel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105185503B (en) | 2018-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wang et al. | Mask‐free patterning of high‐conductivity metal nanowires in open air by spatially modulated femtosecond laser pulses | |
| CN108660303B (en) | Stress-relief-annealing-resistant laser-scored oriented silicon steel and manufacturing method thereof | |
| CN107522161A (en) | Controllable copper substrate superhydrophobic surface of a kind of micro nano structure and preparation method thereof, application | |
| WO2004083465A1 (en) | Grain-oriented magnetic steel sheet excellent in magnetic characteristic and its manufacturing method | |
| CN106587652B (en) | Method for repairing laser cutting damage on glass surface | |
| BR112020015012B1 (en) | METHOD FOR MANUFACTURING GRAIN-ORIENTED SILICON STEEL WITH LOW IRON LOSS AND RESISTANT TO STRESS RELIEF ANNEALING | |
| KR101553495B1 (en) | Grain-oriented electrical steel sheet and method for manufacturing same | |
| KR20190126089A (en) | Directional silicon steel with low core loss and method of manufacturing the same | |
| WO2012068829A1 (en) | Method of fast laser scribing | |
| WO2018117672A1 (en) | Grain-oriented electrical steel sheet and magnetic domain refining method thereof | |
| CN204904951U (en) | Electric steel sheets and strips material | |
| CN105185503B (en) | A kind of electrical sheet sheet material and preparation method thereof | |
| Najafpour et al. | 2-D microflow generation on superhydrophilic nanoporous substrates using epoxy spots for pool boiling enhancement | |
| CN204904953U (en) | Electric steel sheets and strips material | |
| CN105244135B (en) | A kind of electrical sheet sheet material and preparation method thereof | |
| CN205069256U (en) | Electric steel sheets and strips material | |
| CN104313533A (en) | Ultrasonic frequency induction heating technology based quick hot-dipping aluminizing technology | |
| CN106011394A (en) | Heat treatment process adopting three-section type heating for metal workpiece | |
| CN105225784B (en) | A kind of electrical sheet plank and preparation method thereof | |
| US20160265118A1 (en) | Method for producing a completely or partially enameled component | |
| KR101491094B1 (en) | Method for refining magnetic domain of steel sheets and oriented electrical steel sheets manufacutred by the same | |
| CN113564321B (en) | Magnetic domain refining method and application of oriented silicon steel | |
| CN104289402B (en) | There is the preparation method of the brass super hydrophobic surface of corrosion resisting property | |
| CN114829639B (en) | Oriented electrical steel sheet and method for refining magnetic domains thereof | |
| Oda et al. | Correlation between photoluminescence and structure in silicon nanowires fabricated by metal‐assisted etching |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |