WO2016105056A1 - 무방향성 전기강판 및 그 제조방법 - Google Patents
무방향성 전기강판 및 그 제조방법 Download PDFInfo
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- WO2016105056A1 WO2016105056A1 PCT/KR2015/014037 KR2015014037W WO2016105056A1 WO 2016105056 A1 WO2016105056 A1 WO 2016105056A1 KR 2015014037 W KR2015014037 W KR 2015014037W WO 2016105056 A1 WO2016105056 A1 WO 2016105056A1
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- steel sheet
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- oriented electrical
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1244—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties characterised by the heat treatment
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1205—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving particular fabrication steps or treatments of ingots or slabs
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1216—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties characterised by the working steps
- C21D8/1222—Hot rolling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1216—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties characterised by the working steps
- C21D8/1233—Cold rolling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1244—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties characterised by the heat treatment
- C21D8/1261—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties characterised by the heat treatment following hot rolling
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
Definitions
- the present invention relates to non-oriented electrical steel sheets and methods for manufacturing the same.
- Non-oriented electrical steel is used as a core material in rotating equipment such as motors and generators and in stationary equipment such as small transformers and plays an important role in determining the energy efficiency of electrical equipment.
- the characteristics of such steel sheet are iron loss and magnetic flux density representatively, the lower the iron loss, the higher the magnetic flux density. Iron loss represents the energy that disappears due to heat generated from the material during magnetization, and is important because the lower the iron loss, the more energy is lost.
- the magnetic flux density is a value indicating the degree of magnetization under the strength of a unit-size magnetic field, and the higher the value, the greater the induction of magnetization with the same energy. I can deliver it.
- the magnetic flux density is evaluated by the magnetization force in the unit volume, so the ratio of the element that easily magnetizes in the steel plate of the unit volume, that is, the iron atom, is very important.
- Si, Al, and Mn which are elements mainly used in non-oriented electrical steel sheets, are nonmagnetic atoms
- the saturation magnetic flux density value that can be magnetized to maximum magnetization under a large magnetic field is low as the alloying amount increases.
- the magnetic flux density value B 50 is also lowered under the unit magnetic field strength.
- alloy amounts such as Si, Al, and Mn, which are non-magnetic alloying elements, must be added inevitably, thereby reducing the magnetic flux density. In order to defend, it is necessary to control the collective organization.
- One embodiment of the present invention to provide a method for manufacturing a non-oriented electrical steel sheet.
- Another embodiment of the present invention is to provide a non-oriented electrical steel sheet.
- Method for producing a non-oriented electrical steel sheet the step of heating the slab and hot rolling to produce a hot rolled sheet; Annealing the hot rolled sheet; Manufacturing a cold rolled sheet by cold rolling the steel sheet on which the hot rolled sheet annealing is completed; And; Including the step of annealing the cold rolled sheet, the difference between the temperature of the annealing sheet annealing in the step of annealing and the hot rolled sheet annealing temperature in the step of annealing is less than loo ° c.
- the hot rolled sheet annealing temperature in the hot rolled sheet annealing step may be performed at a temperature higher than 15C C higher than the temperature during hot finish rolling in the step of producing the hot rolled sheet by hot rolling.
- the hot rolled sheet annealing time at a temperature higher than the temperature during hot finishing rolling in the hot rolled sheet annealing may be 2 minutes or less.
- Lead-sheet annealing time may be 5 seconds or more.
- the grain size of the crystal grains of the steel sheet after the hot rolled sheet annealing may be 80 or more.
- the slab is in weight%, A1: 0.0005% to 0.02%, Sn: 0.005% to 0.15%, P: 0.001% to 0.15% and S: 0.0008% to 0.015%, the balance includes Fe and impurities can do.
- the slab may further include Sb: 0.005% to 0.15%, and a value of [Sn] + [Sb] + [P] + 20 * [S]) / [Al] may be 40 or more.
- the slab is in weight%, Si: 1.5% to 4.0%, Mn: 0.02% to 3.0%, C:
- Non-oriented electrical steel sheet according to an embodiment of the present invention, the overall composition of the electrical steel sheet
- A1 0.0005% to 0.02%, Sn: 0.005% to 0.153 ⁇ 4>, P: 0.001% to 0.15% and S: 0.0008% to 0.015% based on 100% by weight, the balance includes Fe and impurities do.
- the non-oriented electrical steel sheet further includes Sb: 0.005% to 0.15%, and the value of ([Sn] + [Sb] + [P] + 20 * [S]) / [Al] is 40 or more.
- the texture of the non-oriented electrical steel sheet is 1.5 times the volume fraction of the crystal grains having the orientation of (10, 0, 45) in the Euler orientation (10, 0, 45) in the Euler orientation. It may be abnormal.
- a non-oriented electrical steel sheet having a high magnetic flux density can be provided.
- 1 is a graph showing the relationship between ⁇ volume fraction of crystal grains having an orientation of (30, 0, 45) ⁇ / ⁇ volume fraction of grains having an orientation of (10, 0, 45) ⁇ and a Br value.
- 3 is a graph showing the relationship between the annealed sheet annealing temperature and the Br value.
- % Means weight% unless otherwise specified. It describes a method for manufacturing a non-oriented electrical steel sheet according to an embodiment of the present invention. First provide a slab.
- the slab comprises A1: 0.0005% to 0.02%, Sn: 0.005% to 0.15%, P: 0.001% to 0.15% and S: 0.0008% to 0.015% based on 100% by weight of the total composition of the slab, the balance Fe and impurities may be included.
- the slab further includes Sb: 0.005% to 0.15%, and the value of ([Sn] + [Sb] + [P] + 20 * [S]) / [Al] may be 40 or more.
- [Al], [Sn], [Sb], [P], and [S] mean Al, Sn, Sb, P, and S by weight percentage (%), respectively.
- the slab is based on 100% by weight of the total composition of the slab, Si: 1.5% to 4.0%, Mn: 0.02% to 3.0%, C: 0.005% or less (not including 0%), N: 0.005% (Not including 0%), and: 0.003% or less (not including 0%). The reason for component limitation is demonstrated.
- A1 is added in an amount greater than 0.0005%, iron loss may be increased by increasing the specific resistance of the steel sheet. However, if it exceeds 0.02%, the magnetic flux density may be reduced.
- Sn may be added to 0.005% or more to inhibit the formation of ⁇ 111 ⁇ texture by segregation at the grain boundary during annealing, but when added to more than 0.15%, Sn may cause deterioration of rolling properties including surface defects in hot and hot rolling processes. have.
- Sb added to 0.005% or more may segregate at grain boundaries during annealing to suppress formation of ⁇ 111 ⁇ texture, but when added to 0.15% or more, Sb may cause deterioration of rolling properties including surface defects in hot and hot rolling processes. have.
- the value of ([Sn] + [Sb] + [P] + 20 * [S]) / [A1] may be 40 or more. More specifically, it may be 40 or more and 240 or less. When the value of ([Sn] + [Sb] + [P] + 20 * [S]) / [A1] is 40 to 240, the magnetic flux density is excellent. When the value of ([Sn] + [Sb] + [P] + 20 * [S]) / [Al] is less than 40, the magnetic flux density of the steel sheet is lowered. This will be described later in the Examples.
- Si may be added more than 1.5% to reduce the eddy current loss, but if exceeded, the brittleness is increased to reduce the rolling properties.
- Mn may be added more than 0.02% to increase the specific resistance can lower the iron loss. However, above 3.0%, the saturation magnetic flux density may decrease.
- C extends the austenite region above 0.005% and the temperature at which phase transformation occurs Increasing the interval, it is possible to increase the iron loss by inhibiting the grain growth of ferrite during the final annealing.
- N is more than 0.005% to form a nitride to inhibit grain growth can decrease the magnetism.
- fine carbides and nitrides may be formed to inhibit grain growth and inferior texture.
- the slab may be a slab having a component system in which austenite phase transformation does not occur when heated above a temperature.
- the slab is heated and hot rolled to produce a hot rolled sheet.
- the slab heating temperature may be 1250 ° C or less. Above 1250 ° C, the precipitate in the slab may be dissolved and then finely precipitated during hot rolling.
- hot rolling can be performed through one or more rolling passes.
- the last rolling pass (hot finish rolling) can be carried out at a temperature of 920 ° C or less. More specifically, the temperature may be 80CTC to 920 ° C. If the hot rolled sheet is finished rolled at a temperature of 920 ° C or lower and the hot rolled sheet is annealed within two minutes at a temperature higher than 150 ° C above the hot finish rolling temperature, the grains are uniform in both the center and the surface of the steel sheet. A hot rolled annealing plate having a size can be obtained. Therefore, the magnetic flux density can be improved by obtaining an aggregate having a fraction of the (30,0,45) orientation more than 1.5 times higher than the fraction of the (10,0,45) orientation.
- the hot rolled sheet annealing temperature may be at least i50 ° c higher than silver at hot finish rolling.
- the hot rolled sheet annealing temperature is 9 (xrc to
- the hot-rolled sheet annealing temperature means the highest temperature of the hot-rolled sheet during hot-rolled sheet annealing.
- the annealing time from the temperature at the time of hot finish rolling at the time of hot-rolled sheet annealing to the hot-rolled sheet annealing temperature may be 2 minutes or less.
- Hot-rolled rolled annealing hot rolled annealing at temperatures higher than 150 ° C for 2 minutes If carried out within, it is possible to obtain a hot-rolled annealing plate having a uniform grain size in all areas of the central portion and the surface portion of the steel sheet. Therefore, the magnetic flux density can be improved by obtaining an aggregate having a fraction of the (30,0,45) orientation more than 1.5 times higher than the fraction of the (10,0,45) orientation. This will be described later in the Examples.
- the grain size of the crystal grains may be 80 or more in all regions of the surface portion and the thickening portion in the thickness direction of the steel sheet on which the hot rolled sheet annealing is completed. If less than 80, the crystal grains may not be sufficiently grown, and the magnetic properties of the electrical steel sheet may be lowered.
- the grain size of the crystal grains may be 80 or more and 700 or less in all regions of the central portion in the thickness direction and the surface portion of the steel sheet is completed annealing.
- the magnetism of the electrical steel sheet can be improved by having uniform grain sizes of 80 / M or more and 700 or less in all regions of the surface portion of the steel sheet and the central portion in the thickness direction.
- the hot rolled annealing plate is cold rolled to produce a cold rolled plate.
- the rolling reduction during the rolling may be 50% to 95%.
- the annealed sheet annealing temperature can be carried out in the temperature range below 100 ° C below the hot rolled sheet annealing temperature.
- the rolling annealing time may be 5 seconds or more.
- the fraction of the (30,0,45) orientation is higher than the fraction of the (10,0,45) orientation even if the annealing time is maintained for 5 seconds No aggregates more than 1.5 times can be obtained. This will be described later in the Examples.
- Non-oriented electrical steel sheet according to one embodiment of the present invention A1: 0.0005% to 0.02%, Sn: 0.005% to 0.1, P: 0.001% to
- the non-oriented electrical steel sheet, Sb: 0.005% to 0.15% further comprises,
- the value of ([Sn] + [Sb] + [P] + 20 * [S]) / [Al] may be greater than or equal to 40.
- [Al], [Sn], [Sb], [P], and [S] mean Al, Sn, Sb, P, and S by weight percentage (%), respectively.
- the reason for the component limitation in the non-oriented electrical steel sheet is explained in the reason for the component limitation in the slab.
- the texture of the non-oriented electrical steel sheet is 1.5 times the volume fraction of the crystal grains having the orientation of (10,0,45) in the Euler orientation as the volume fraction of the grains having the orientation of (10,0,45) in the Euler orientation. It may be abnormal.
- the magnetic flux density can be improved by satisfying 1.5 times or more of the volume fraction of the grain having the orientation of (30, 0, 45) and having the orientation of (10, 0, 45).
- 1 is a graph showing the relationship between ⁇ volume fraction of crystal grains having an orientation of (30,0,45) ⁇ / ⁇ volume fraction of grains having an orientation of (10, 0,45) ⁇ and [beta].
- the magnetic flux density of the steel sheet was evaluated according to the magnetic flux density (Br) value considering the density of the steel sheet as follows.
- [Si] is the addition amount (weight%) of Si
- [A1] is the addition amount (increase) of A1.
- 3 ⁇ 4 0 is the magnetic flux density value induced in the steel sheet when it is induced to 5,000 A / m.
- the hot finish rolling was carried out at 9 (xrc. Then, the hot rolled sheet was annealed in liocrc and cold rolled, and then cold rolled sheet was annealed at 1050 ° C. for 5 seconds. From the hot finish rolling to the hot rolled sheet annealing temperature Annealing time was 2 minutes.
- Si 3.0%, Mn: 0.4%, C: 0.002%, N: 0.003%, Ti: 0.001%, Al: 0.004%, Sn: 0.03%, Sb: 0.03%, P: 0.05% and S : Slabs containing 0.005% and the balance are Fe and impurities.
- the slab was heated to 1150 ° C and then hot rolled to prepare a hot rolled plate. Hot finish rolling was carried out at 900 ° C. during hot rolling. Thereafter, the hot rolled sheet was annealed in licxrc and cold rolled to prepare a cold rolled sheet. The annealing time from the temperature at the time of hot finishing rolling to the hot-rolled sheet annealing temperature was 2 minutes. The cold rolled sheet was annealed for 5 seconds at the temperature shown in FIG.
- the magnetic flux density is excellent when the difference between the cold rolled sheet annealing temperature and the hot rolled sheet annealing silver is less than 100 ° C.
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Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017534252A JP6503464B2 (ja) | 2014-12-24 | 2015-12-21 | 無方向性電磁鋼板およびその製造方法 |
| US15/539,610 US10941457B2 (en) | 2014-12-24 | 2015-12-21 | Non-oriented electrical steel sheet and method for manufacturing the same |
| EP15873583.7A EP3239309B1 (en) | 2014-12-24 | 2015-12-21 | Non-oriented electrical steel sheet and method for manufacturing the same |
| CN201580071226.3A CN107223165B (zh) | 2014-12-24 | 2015-12-21 | 无取向电工钢板及其制备方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140189064A KR101650406B1 (ko) | 2014-12-24 | 2014-12-24 | 무방향성 전기강판 및 그 제조방법 |
| KR10-2014-0189064 | 2014-12-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016105056A1 true WO2016105056A1 (ko) | 2016-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2015/014037 Ceased WO2016105056A1 (ko) | 2014-12-24 | 2015-12-21 | 무방향성 전기강판 및 그 제조방법 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US10941457B2 (ko) |
| EP (1) | EP3239309B1 (ko) |
| JP (1) | JP6503464B2 (ko) |
| KR (1) | KR101650406B1 (ko) |
| CN (1) | CN107223165B (ko) |
| WO (1) | WO2016105056A1 (ko) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101728028B1 (ko) * | 2015-12-23 | 2017-04-18 | 주식회사 포스코 | 무방향성 전기강판 및 그 제조방법 |
| KR102018181B1 (ko) | 2017-12-26 | 2019-09-04 | 주식회사 포스코 | 무방향성 전기강판 및 그 제조방법 |
| KR102109241B1 (ko) * | 2017-12-26 | 2020-05-11 | 주식회사 포스코 | 형상 품질이 우수한 무방향성 전기강판 및 그 제조방법 |
| KR102080167B1 (ko) * | 2017-12-26 | 2020-02-21 | 주식회사 포스코 | 무방향성 전기강판의 제조방법 |
| EP3867414A1 (de) * | 2018-10-15 | 2021-08-25 | ThyssenKrupp Steel Europe AG | Verfahren zur herstellung eines no elektrobands mit zwischendicke |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010090474A (ja) * | 2008-09-11 | 2010-04-22 | Jfe Steel Corp | 無方向性電磁鋼板およびその製造方法 |
| JP2010248559A (ja) * | 2009-04-14 | 2010-11-04 | Nippon Steel Corp | 無方向性電磁鋼板 |
| KR20110075521A (ko) * | 2009-12-28 | 2011-07-06 | 주식회사 포스코 | 자성이 우수한 무방향성 전기강판 및 그 제조방법 |
| KR20120074032A (ko) * | 2010-12-27 | 2012-07-05 | 주식회사 포스코 | 압연방향의 투자율이 우수한 저철손 고자속밀도 무방향성 전기강판 및 그 제조방법 |
| KR20140084896A (ko) * | 2012-12-27 | 2014-07-07 | 주식회사 포스코 | 무방향성 전기강판 및 그 제조방법 |
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| JPS59157259A (ja) | 1983-01-25 | 1984-09-06 | Nippon Steel Corp | 鉄損が低くかつ磁束密度がすぐれた無方向性電磁鋼板およびその製造法 |
| JP2500033B2 (ja) * | 1990-12-10 | 1996-05-29 | 川崎製鉄株式会社 | 磁気特性が優れかつ表面外観の良い無方向性電磁鋼板の製造方法 |
| JPH086135B2 (ja) | 1991-04-25 | 1996-01-24 | 新日本製鐵株式会社 | 磁気特性の優れた無方向性電磁鋼板の製造方法 |
| JP3399726B2 (ja) | 1995-11-07 | 2003-04-21 | 新日本製鐵株式会社 | 高磁束密度低鉄損無方向性電磁鋼板の製造方法 |
| JP4218077B2 (ja) * | 1998-02-26 | 2009-02-04 | 住友金属工業株式会社 | 無方向性電磁鋼板およびその製造方法 |
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| JP4276612B2 (ja) | 2004-11-08 | 2009-06-10 | 新日本製鐵株式会社 | 無方向性電磁鋼板およびその製造方法 |
| CN100999050A (zh) * | 2006-01-11 | 2007-07-18 | 宝山钢铁股份有限公司 | 低铁损高磁感冷轧无取向电工钢板的生产方法 |
| EP2520681B1 (en) | 2009-12-28 | 2018-10-24 | Posco | Non-oriented electrical steel sheet having superior magnetic properties and a production method therefor |
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| JP6127440B2 (ja) | 2012-10-16 | 2017-05-17 | Jfeスチール株式会社 | 無方向性電磁鋼板製造用の熱延鋼板およびその製造方法 |
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| JP2010090474A (ja) * | 2008-09-11 | 2010-04-22 | Jfe Steel Corp | 無方向性電磁鋼板およびその製造方法 |
| JP2010248559A (ja) * | 2009-04-14 | 2010-11-04 | Nippon Steel Corp | 無方向性電磁鋼板 |
| KR20110075521A (ko) * | 2009-12-28 | 2011-07-06 | 주식회사 포스코 | 자성이 우수한 무방향성 전기강판 및 그 제조방법 |
| KR20120074032A (ko) * | 2010-12-27 | 2012-07-05 | 주식회사 포스코 | 압연방향의 투자율이 우수한 저철손 고자속밀도 무방향성 전기강판 및 그 제조방법 |
| KR20140084896A (ko) * | 2012-12-27 | 2014-07-07 | 주식회사 포스코 | 무방향성 전기강판 및 그 제조방법 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20170362676A1 (en) | 2017-12-21 |
| JP6503464B2 (ja) | 2019-04-17 |
| EP3239309B1 (en) | 2020-04-01 |
| EP3239309A1 (en) | 2017-11-01 |
| KR20160078172A (ko) | 2016-07-04 |
| CN107223165B (zh) | 2019-12-20 |
| JP2018507958A (ja) | 2018-03-22 |
| US10941457B2 (en) | 2021-03-09 |
| CN107223165A (zh) | 2017-09-29 |
| KR101650406B1 (ko) | 2016-08-23 |
| EP3239309A4 (en) | 2017-12-20 |
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