WO2014129106A1 - 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 - Google Patents
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 Download PDFInfo
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- WO2014129106A1 WO2014129106A1 PCT/JP2014/000200 JP2014000200W WO2014129106A1 WO 2014129106 A1 WO2014129106 A1 WO 2014129106A1 JP 2014000200 W JP2014000200 W JP 2014000200W WO 2014129106 A1 WO2014129106 A1 WO 2014129106A1
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 83
- 239000010959 steel Substances 0.000 title claims abstract description 83
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title description 13
- 238000005554 pickling Methods 0.000 claims abstract description 37
- 238000000137 annealing Methods 0.000 claims abstract description 36
- 239000012299 nitrogen atmosphere Substances 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 230000004580 weight loss Effects 0.000 claims abstract description 8
- 238000005098 hot rolling Methods 0.000 claims description 39
- 229910000565 Non-oriented electrical steel Inorganic materials 0.000 claims description 24
- 229910052718 tin Inorganic materials 0.000 claims description 16
- 229910052745 lead Inorganic materials 0.000 claims description 14
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 13
- 239000012535 impurity Substances 0.000 claims description 13
- 229910052797 bismuth Inorganic materials 0.000 claims description 12
- 229910052750 molybdenum Inorganic materials 0.000 claims description 12
- 229910052698 phosphorus Inorganic materials 0.000 claims description 12
- 229910052787 antimony Inorganic materials 0.000 claims description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- 229910052717 sulfur Inorganic materials 0.000 claims description 10
- 229910052748 manganese Inorganic materials 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 78
- 229910052742 iron Inorganic materials 0.000 abstract description 37
- 230000007547 defect Effects 0.000 abstract description 31
- 230000004907 flux Effects 0.000 abstract description 7
- 238000007654 immersion Methods 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 14
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- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
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- 238000007598 dipping method Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
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- 150000003568 thioethers Chemical class 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
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- 229910052738 indium Inorganic materials 0.000 description 1
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- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/14766—Fe-Si based alloys
- H01F1/14775—Fe-Si based alloys in the form of sheets
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- 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 by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
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- C—CHEMISTRY; METALLURGY
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- 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
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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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 by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
- 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 by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/1255—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest with diffusion of elements, e.g. decarburising, nitriding
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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 by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/1261—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest following 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
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
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- 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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- 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
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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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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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
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/14766—Fe-Si based alloys
- H01F1/14791—Fe-Si-Al based alloys, e.g. Sendust
Definitions
- the present invention is a hot-rolled steel sheet for producing a non-oriented electrical steel sheet mainly used as an iron core material for electrical equipment and a method for producing the hot-rolled steel sheet, in particular, not only excellent in magnetic properties such as iron loss and magnetic flux density,
- the present invention relates to a hot-rolled steel sheet for producing a non-oriented electrical steel sheet that has few surface defects and is excellent in production yield, and a method for producing the same.
- Patent Document 1 discloses a technique for reducing iron loss by reducing the amount of impurity elements (S, N, O) in steel, and Patent Document 2 suppresses impurity contamination and slab heating.
- Methods for reducing iron loss by controlling inclusions by specifying temperature, coiling temperature, hot-rolled sheet annealing conditions, cold rolling reduction ratio, and finish annealing conditions are disclosed.
- Patent Document 3 discloses that a steel containing Si: 2.8 to 4.0 mass% and Al: 0.3 to 2.0 mass% is subjected to warm rolling in a temperature range of 200 to 500 ° C.
- Patent Document 4 discloses a method of hot rolling a steel containing Si: 1.5 to 4.0 mass% and Al: 0.1 to 2.0 mass%, and then hot rolling a sheet of 1000 ° C to 1200 ° C.
- a method of developing a ⁇ 100 ⁇ texture by combining annealing and cold rolling with a rolling reduction of 80 to 90% is disclosed.
- Patent Document 5 Patent Document 6, and Patent Document 7 propose a technique for reducing iron loss by containing a small amount of Sn or Sb.
- Patent Documents 1 to 7 can surely reduce iron loss, in recent years, especially when a small amount of Sn or Sb is added, many surface defects occur in the steel sheet, which is a manufacturing problem. A lot of situations have occurred where the yield is extremely poor.
- the present invention has been developed in view of the above-described situation, and not only has excellent magnetic properties such as iron loss and magnetic flux density, but also heat for producing non-oriented electrical steel sheets that have low surface defects and excellent manufacturing yield.
- the object is to provide a rolled steel sheet together with its advantageous production method.
- the component of the present invention contains 0.2 mass% or more of Al
- the total amount of Pb and Bi is 0.0010 mass% or less
- Al is generated during hot-rolled sheet annealing.
- the generation of SiO 2 scale is suppressed due to the barrier effect of the oxide, and the scale is removed relatively uniformly by the subsequent pickling, so that the surface appearance of the steel sheet after finish annealing becomes good.
- the barrier effect of the Al oxide generated during hot-rolled sheet annealing is partially weakened, and Si oxidation is likely to proceed. Since the variation in the amount of SiO 2 scale generated becomes large, the variation in the degree of scale removal by the subsequent pickling becomes large, resulting in unevenness on the surface of the steel sheet after finish annealing, and the appearance is thought to deteriorate.
- the gist configuration of the present invention is as follows. 1. In mass%, C: 0.005% or less, Si: 2.0% to 4.5%, Al: 0.2% to 2.0%, Mn: 0.1% to 2.0%, S: 0.003% or less, N: 0.003% or less, P : 0.015% or less, Mo: 0.002% or more and 0.03% or less, Pb and Bi totaling 0.0010% or less, and further containing either one or two of Sn and Sb in total 0.005% or more and 0.2% or less, the balance A hot-rolled steel sheet comprising a component composition of Fe and inevitable impurities, after annealing the hot-rolled steel sheet in a nitrogen atmosphere at 1000 ° C.
- a hot-rolled steel sheet for producing non-oriented electrical steel sheets having a pickling weight loss of 10 g / m 2 or more and 35 g / m 2 or less.
- the hot-rolled steel sheet comprises, by mass%, one or more selected from Ca: 0.001% to 0.005%, Mg: 0.0002% to 0.005%, Cr: 0.05% to 0.5%.
- the finish hot rolling finish temperature at the hot rolling is 820 ° C. or more and 920 ° C. or less
- the coiling temperature after the hot rolling at the hot rolling is further set
- the slab contains, by mass%, one or more selected from Ca: 0.001% to 0.005%, Mg: 0.0002% to 0.005%, Cr: 0.05% to 0.5%. 4.
- this hot-rolled steel sheet was subjected to hot-rolled sheet annealing at 1000 ° C. for 30 seconds in a 100% N 2 atmosphere.
- hot-rolled sheet annealing at 1000 ° C. for 30 seconds in a 100% N 2 atmosphere.
- pickling for 1 minute under conditions of 7% HCl and 80 ° C. cold rolling to a thickness of 0.50 mm, the condition of 1000 ° C. for 10 seconds in a 20% H 2 -80% N 2 atmosphere Finish annealing was used.
- a hot-rolled sheet sample before pickling was separately collected.
- FIG. 1 shows the results of investigation of iron loss W 15/50 and surface defects. The occurrence of surface defects is evaluated by the length of linear defects existing per unit area of the steel sheet.
- the pickling reduction amount of the steel sheet under the conditions of 7% HCl, 80 ° C., 60 seconds was examined using a separately sampled hot-rolled sheet sample before pickling.
- the sheet was cold-rolled to a thickness of 0.35 mm and subjected to finish annealing in a 20% H 2 -80% N 2 atmosphere at 1025 ° C. for 10 seconds.
- the sample after hot-rolled sheet annealing before and after pickling was collected separately, and the pickling loss was investigated.
- FIG. 3 shows the effects of iron loss, surface defect occurrence, and addition amounts of P and Mo on the amount of pickling loss of hot-rolled sheets under the condition of being immersed in a solution of 7% HCl at 80 ° C. for 60 seconds.
- the occurrence of surface defects is evaluated by the length of linear defects per unit area of the steel sheet. Less than 0.001 (m / m 2 ) is defect-free ( ⁇ ), and 0.001 (m / m 2 ) or more is defective. Yes ( ⁇ ).
- FIG. 3 shows that the surface appearance is improved and the iron loss is improved in the range of P: 0.015% or less and Mo: 0.002 to 0.03%.
- the amount of pickling loss in the sample after hot-rolled sheet annealing in the above P and Mo addition range under the condition of being immersed in a solution of 7% HCl at 80 ° C. for 60 seconds is 10 g / m 2 or more and 35 g / m 2 The range was 2 or less.
- FIG. 4 shows the influence of the slab heating temperature, the finish hot rolling end temperature, and the coiling temperature after the hot rolling end on the iron loss W 15/50 and the surface defect occurrence status.
- the slab heating temperature is 1050 ° C or higher and 1150 ° C or lower
- the finish hot rolling finish temperature is 820 ° C or higher and 920 ° C or lower
- the coiling temperature after hot rolling is finished is 520 ° C or higher and 620 ° C or lower.
- the pickling loss under the condition of being immersed in a solution of 7% HCl at 80 ° C. for 60 seconds is 10 g / m 2 or more and 35 g / m 2 or less. It was in range.
- C 0.005% or less
- C is preferably as small as possible in order to suppress the magnetic aging deterioration of the steel sheet, but is acceptable up to 0.005%. Preferably it is 0.0035% or less.
- Si 2.0% to 4.5%
- Si is a useful element that increases electrical resistance and improves iron loss.
- a Si content of 2.0% or more is required.
- the Si content is limited to the range of 2.0 to 4.5%.
- Al 0.2% or more and 2.0% or less Al, like Si, is generally used as a deoxidizer for steel and has a large effect of increasing iron resistance and reducing iron loss. It is one of the main constituent elements of electrical steel sheets. Further, it is effective for reducing the amount of AlN-based precipitates (fine precipitates), and for that purpose, addition of 0.2% or more is necessary. However, if the content is too large, the lubricity with the mold is lowered in continuous casting, and casting becomes difficult. Therefore, the content is made 2.0% or less.
- Mn 0.1% or more and 2.0% or less Mn is an element effective not only for increasing the electric resistance and reducing the iron loss, but also for improving the hot rolling property, like Si.
- the content is less than 0.1%, the effect of addition is poor.
- the content exceeds 2.0%, the saturation magnetic flux density is significantly reduced, so the content is limited to the above range.
- S 0.003% or less S is an impurity that is inevitably mixed. When the content of S is increased, a large amount of sulfide inclusions are formed, which causes an increase in iron loss. Therefore, in the present invention, it is made 0.003% or less.
- the lower limit is not particularly limited, and is about 0.0002% from the viewpoint of productivity.
- N 0.003% or less
- S is an impurity that is inevitably mixed in. If its content is large, a large amount of nitride is formed, which causes an increase in iron loss. Therefore, in the present invention, it is made 0.003% or less.
- the lower limit is not particularly limited and is about 0.0005% from the viewpoint of productivity.
- P 0.015% or less P is an element often added intentionally and used for the purpose of improving the strength and texture of the steel sheet. However, in the present invention, it is necessary to reduce as much as possible in order to improve the surface appearance of the steel sheet.
- the lower limit is not particularly limited, and is about 0.002% from the viewpoint of productivity.
- Mo 0.002% or more and 0.03% or less
- Mo is an essential element in order to mitigate the adverse effect on the surface appearance of about 0.01% P unavoidably mixed as an impurity.
- the content is less than 0.002%, a sufficient addition effect cannot be obtained.
- the content exceeds 0.03%, the magnetic properties tend to be adversely affected, so the content is limited to the above range.
- it is 0.003% or more and 0.02% or less.
- Sn, Sb 0.005% or more and 0.2% or less Both Sn and Sb have the effect of improving the texture of the non-oriented electrical steel sheet and enhancing the magnetic properties. To obtain this effect, Sb and Sn are added alone. In addition, in any case of composite addition, the total addition amount is 0.005% or more. On the other hand, if it is added excessively, the steel becomes brittle and increases the number of defects such as plate breakage and heges during steel plate production. Therefore, Sn and Sb should be 0.2% or less in total in either case of single addition or composite addition.
- the lower limit is not particularly limited, and is about 0.00001% (0.1 mass ppm) in total from the viewpoint of productivity and the like.
- Ca 0.001% to 0.005%
- Ca precipitates as CaS and is an effective component for improving iron loss while suppressing the precipitation of fine sulfides. However, if it is less than 0.001%, the effect of addition is not sufficient. On the other hand, if it exceeds 0.005%, inclusions of Ca oxide increase and the iron loss deteriorates. Is preferred.
- Mg 0.0002% or more and 0.005% or less
- the lower limit is preferably 0.0002%.
- adding over 0.005% is difficult from the viewpoint of productivity and unnecessarily increases the cost. Therefore, the upper limit is preferably about 0.005%.
- Cr 0.05% or more and 0.5% or less Cr is an effective component for improving iron loss and surface appearance by modifying the scale of the surface layer produced during annealing of hot-rolled steel sheets and hot-rolled sheets. However, when it exceeds 0.5%, the effect is saturated. Therefore, when it is added, it is preferably limited to the range of 0.05% to 0.5%.
- the balance other than the above components is inevitable impurities and Fe mixed in the manufacturing process.
- a non-oriented electrical steel sheet using the hot-rolled steel sheet of the present invention it is carried out using the processes and equipment applied to general non-oriented electrical steel sheets, except for the production conditions of the hot-rolled steel sheet described later. can do.
- steel that has been melted to a specified composition by a converter or electric furnace is secondarily refined with a degassing facility, and then steel slab is obtained by continuous casting or after ingot-making, and then hot rolling.
- a hot-rolled steel sheet according to the present invention Subsequently, a non-oriented electrical steel sheet is obtained by performing processes such as hot-rolled sheet annealing, pickling, cold or warm rolling, finish annealing and baking after applying an insulating coating.
- the slab heating temperature is set to 1050 ° C. or higher and 1150 ° C. or lower, and further hot rolling is performed, the finish hot rolling end temperature is in the range of 820 ° C. or higher and 920 ° C. or lower, and the coiling temperature after hot rolling ends is 520 ° C. or higher and 620 ° C. It shall be performed so that it is in the range of °C or less.
- the preferable range of the slab heating temperature is 1050 ° C. or more and 1125 ° C. or less
- the preferable range of the finish hot rolling end temperature is 850 ° C. or more and 900 ° C. or less
- the preferable range of the coiling temperature after the end of hot rolling is 550 ° C. Above 600 ° C.
- the degree of removal of the scale generated in the surface layer portion of the steel sheet after the hot-rolled sheet annealing is optimized together with the effectiveness of the raw material components such as Mo described above.
- annealing is performed in a nitrogen atmosphere at 1000 ° C. for 30 seconds, and then 7% HCl.
- the pickling weight loss after immersing in this solution at 80 ° C. for 60 seconds was used.
- the present invention is limited to 1000 ° C. and 30 seconds of annealing conditions in order to specify the properties of the hot-rolled steel sheet using the above pickling reduction amount, so that good magnetic properties and surface appearance can be obtained.
- the subsequent pickling conditions were limited to immersing in a solution of 7% HCl at 80 ° C for 60 seconds, but the actual hot-rolled sheet annealing conditions (usually 950 ° C to 1100 ° C) and scale removal conditions such as pickling Can be arbitrarily set in accordance with required product characteristics, scale generation conditions, and the like, and is not limited to the above conditions.
- Example 1 The molten steel obtained by blowing in a converter was degassed and then cast to produce steel slabs having the components shown in Table 1. Thereafter, hot rolling was performed to a thickness of 2.0 mm under the slab heating temperature, finishing hot rolling end temperature, and coiling temperature conditions after hot rolling shown in Table 2 to obtain a hot rolled steel sheet. Next, it was subjected to hot-rolled sheet annealing at 1000 ° C. for 30 seconds in a 100% N 2 atmosphere, and after pickling treatment immersed in a solution of 7% HCl at 80 ° C. for 60 seconds, it was cooled to the plate thickness shown in Table 2. Hot rolling was performed.
- the amount of pickling loss after dipping in a solution of 7% HCl after hot-rolled sheet annealing at 1000 ° C. for 30 seconds at 80 ° C. for 60 seconds is 10 g in the invention examples.
- / m was 2 or more 35 g / m 2 or less.
- the example of the invention obtained by the manufacturing conditions of the hot-rolled steel sheet according to this invention has obtained favorable results in both magnetic properties and surface appearance.
- Example 2 Molten steel obtained by blowing in a converter was cast after degassing, and steel slabs having the components shown in Table 3 were produced. Thereafter, hot rolling was performed to a thickness of 1.6 mm under the slab heating temperature, the finishing hot rolling end temperature, and the coiling temperature condition after the hot rolling shown in Table 4. Next, it was subjected to hot rolled sheet annealing at 1000 ° C. for 30 seconds in a 100% N 2 atmosphere, and after pickling treatment under the condition of 7% HCl and 80 ° C. ⁇ 60 seconds immersion, it was cooled to the plate thickness shown in Table 4. Hot rolling was performed. Thereafter, finish annealing was performed in a 20% H 2 -80% N 2 atmosphere at 1000 ° C.
- the pickling weight loss value after dipping in a solution of 7% HCl after hot-rolled sheet annealing at 1000 ° C. for 30 seconds at 80 ° C. for 60 seconds is 10 g in the invention examples.
- / m was 2 or more 35 g / m 2 or less.
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Abstract
Description
本発明は、上記の知見に立脚するものである。
1.質量%で、C:0.005%以下、Si:2.0%以上4.5%以下、Al:0.2%以上2.0%以下、Mn:0.1%以上2.0%以下、S:0.003%以下、N:0.003%以下、P:0.015%以下、Mo:0.002%以上0.03%以下、PbとBiを合計で0.0010%以下とし、さらにSnおよびSbのいずれか1種または2種を合計で0.005%以上0.2%以下含有し、残部Feおよび不可避的不純物の成分組成からなる熱延鋼板であって、該熱延鋼板を窒素雰囲気中、1000℃、30秒で焼鈍したのち、7%HCl溶液に80℃で60秒間浸漬した後の酸洗減量が、10g/m2以上35g/m2以下である無方向性電磁鋼板製造用の熱延鋼板。
上記スラブ加熱時の温度を1050℃以上1150℃以下、上記熱間圧延時の仕上げ熱延終了温度を820℃以上920℃以下とし、さらに上記熱間圧延時の熱延終了後の巻取温度を520℃以上620℃以下とする無方向性電磁鋼板製造用の熱延鋼板の製造方法。
はじめに、本発明を導くに至った実験結果について説明する。
まず、鉄損および表面外観に及ぼすPbの影響について調査するため、C:0.0023%、Si:2.5%、Al:0.3%、Mn:0.2%、S:0.0021%、N:0.0015%、Sn:0.05%およびP:0.03%を含む組成をA系列とし、また、C:0.0021%、Si:2.5%、Al:0.3%、Mn:0.2%、S:0.0017%、N:0.0020%、Sn:0.05%、P:0.01%およびMo:0.005%を含む組成をB系列として、それぞれにPbを0~0.01%の範囲で含有させた鋼を実験室にて溶解し、1100℃で加熱した後、2.2mm厚に熱間圧延を行った。引続き、この熱延鋼板に100%N2雰囲気で、1000℃、30秒の熱延板焼鈍を施した。ついで、7%HCl、80℃の条件で1分間酸洗した後、板厚:0.50mm厚に冷間圧延して、20%H2-80%N2雰囲気で1000℃、10秒の条件を用い仕上げ焼鈍を行った。その際、酸洗前の熱延板試料を、別途採取しておいた。
表面欠陥の発生状況は、鋼板の単位面積当りに存在する線状欠陥の長さで評価し、0.001(m/m2)未満を欠陥無(図中、数字1で示す)、0.001(m/m2)以上0.01(m/m2)以下を欠陥少し有(図中、数字2で示す)とし、0.01(m/m2)超を欠陥多とした(図中、数字3で示す)。
同図より、組成A,B系列の両者とも、Pbが0.0010%を超えると表面外観が大きく劣化し、鉄損も劣化傾向を示すことがわかる。ただし、Pbが0.0010%以下の場合、組成A系列よりも組成B系列の鋼の方が、鉄損、表面外観とも良好な傾向であった。
Δm = (m1―m2)/ S ・・・ (1)
Δm:酸洗減量 (g/m2)
m1:酸洗前質量 (g)
m2:酸洗後質量 (g)
S:試料面積 (m2)
その結果を図2に示す。Pbが0.0010%を超えると酸洗減量が増大することがわかる。また、Pbが0.0010%以下の場合、組成A系列よりも組成B系列の方が酸洗減量は少ないことがわかる。
すなわち、C:0.0030%、Si:3.5%、Al:1.0%、Mn:0.5%、S:0.0012%、N:0.0017%、Sn:0.03%、Pb:0.0002%を含み、さらに、Pを0.005~0.05%、Moを0~0.1%の範囲で変化させた鋼を、実験室にて溶解し、1100℃で加熱した後、1.8mm厚に熱間圧延を行った。引続いて、この熱延鋼板に100%N2雰囲気で1000℃、30秒の熱延板焼鈍を施し、さらに、80℃、7%HClの溶液に、60秒間浸漬する条件下で酸洗した後、板厚:0.35mm厚に冷間圧延して、20%H2-80%N2雰囲気で1025℃、10秒の条件を用い仕上げ焼鈍を行った。なお、酸洗前後の熱延板焼鈍後の試料を別途採取して、酸洗減量を調査した。
C:0.0012%、Si:3.0%、Al:0.5%、Mn:0.5%、S:0.0008%、N:0.003%、Sn:0.08%、Pb:0.0003%、P:0.01%およびMo:0.01%の成分組成からなる鋼スラブを用意し、スラブ加熱温度、仕上げ熱延終了温度と熱延終了後の巻取温度を変化させて2.0mm厚まで熱延した。次に、窒素雰囲気中で1000℃、30秒の条件を用いて熱延板焼鈍を施し、7%HClの溶液に80℃で60秒間浸漬する条件下で酸洗した後、板厚:0.35mm厚に冷間圧延した。その後、20%H2-80%N2雰囲気、1010℃、10秒の条件で仕上げ焼鈍を行った。
鉄損W15/50および表面欠陥発生状況に及ぼすスラブ加熱温度、仕上げ熱延終了温度と熱延終了後の巻取温度の影響を図4に示す。
C:0.005%以下
Cは、鋼板の磁気時効劣化を抑制するために、極力少ないほうが好ましいが、0.005%までは許容できる。好ましくは0.0035%以下である。
本発明の電磁鋼板において、Siは、電気抵抗を増大させ、鉄損を改善する有用元素である。この鉄損改善の効果を得るためには、2.0%以上のSi含有量が必要である。一方、4.5%を超えると鋼板の加工性が劣化し、かつ磁束密度の低下も顕著になるので、Si含有量は2.0~4.5%の範囲に限定する。
Alは、Siと同様、鋼の脱酸剤として一般的に用いられており、電気抵抗を増加して鉄損を低減する効果が大きいため、通常、無方向性電磁鋼板の主要構成元素の一つである。また、AlN系の析出物量(微細な析出物)を低減するのに有効であり、そのためには0.2%以上の添加が必要である。しかし、含有量が多すぎると、連続鋳造においてモールドとの潤滑性が低下し、鋳造が困難になるので、2.0%以下で含有させるものとする。
Mnは、Siと同様に電気抵抗を高めて鉄損を低減する効果があるだけでなく、熱間圧延性を改善するのに有効な元素である。しかし、含有量が0.1%に満たないとその添加効果に乏しく、一方、2.0%を超えると飽和磁束密度の低下が顕著になるため、上記範囲に限定する。
Sは、不可避的に混入してくる不純物であり、その含有量が多くなると硫化物系介在物が多量に形成されて鉄損が増加する原因となる。よって、本発明では0.003%以下とする。一方、下限値は特に制限はなく、生産性等の観点から0.0002%程度である。
NもSと同様、不可避的に混入してくる不純物であり、その含有量が多いと窒化物が多量に形成されて鉄損が増加する原因となる。よって、本発明では0.003%以下とする。一方、下限値は特に制限はなく、生産性等の観点から0.0005%程度である。
Pは、鋼板の強度向上や集合組織改善のために、意図的に添加して用いられることが多い元素である。しかしながら、本発明においては、鋼板の表面外観改善のために、極力低減する必要があるため、0.015%以下とする。一方、下限値は特に制限はなく、生産性等の観点から0.002%程度である。
本発明において、Moは、不純物として不可避的に混入する0.01%程度のPが表面外観に及ぼす悪影響を緩和するために、必須の元素である。含有量が0.002%未満では充分な添加効果が得られず、一方、0.03%を超えて添加すると、逆に磁気特性に悪影響を及ぼす傾向がみられるので、上記範囲に限定する。好ましくは、0.003%以上0.02%以下である。
Sn,Sbはいずれも、無方向性電磁鋼板の集合組織を改善し磁気特性を高める効果を有するが、その効果を得るには、Sb,Snを単独添加または複合添加のいずれの場合においても、合計で0.005%以上の添加量とする。一方、過剰に添加すると鋼が脆化し、鋼板製造中の板破断や、ヘゲなどの疵が増加するため、Sn,Sbは単独添加または複合添加いずれの場合も合計で0.2%以下とする。
両者単独、または複合のいずれの場合においても、合計で0.0010%を超えると、鋼板の表面外観が大きく劣化し、磁性も劣化するため、上記範囲に限定する。一方、下限値は特に制限はなく、生産性等の観点から合計で0.00001%(0.1massppm)程度である。
Ca:0.001%以上0.005%以下
Caは、CaSとして析出し、微細な硫化物の析出を抑制しながら鉄損を改善するのに有効な成分である。しかし、0.001%未満ではその添加効果は充分でなく、一方、0.005%を超えると、Ca酸化物の介在物が増え、かえって鉄損が劣化するため、添加する際には、上記範囲とすることが好ましい。
Mgは、0.0002%以上添加すると、Mg酸化物を形成し、この酸化物にS,N等の不純物元素が複合析出して有害な硫化物や窒化物の生成が抑制され、鉄損が低下する。このため下限を0.0002%にすることが好ましい。
一方、0.005%を超えて添加することは、生産性の観点から困難であり、いたずらにコストアップを招くため、上限を0.005%程度とすることが好ましい。
Crは、熱延鋼板および熱延板焼鈍時に生成する表層スケールの改質による鉄損と表面外観の改善に有効な成分であり、0.05%以上の添加でその効果が明確になるが、0.5%を超えるとその効果は飽和するので、添加する際には、0.05%以上0.5%以下の範囲に限定することが好ましい。
本発明の熱延鋼板を用いて無方向性電磁鋼板を製造する場合は、後述する熱延鋼板の製造条件を除き、一般の無方向性電磁鋼板に適用されている工程および設備を用いて実施することができる。
例えば、転炉あるいは電気炉などにより所定の成分組成に溶製された鋼を、脱ガス設備で二次精錬し、連続鋳造または造塊後の分塊圧延により鋼スラブとしたのち、熱間圧延を施して、本発明に従う熱延鋼板とする。
ついで、熱延板焼鈍、酸洗、冷間または温間圧延、仕上げ焼鈍および絶縁被膜を塗布して焼き付けといった工程を施すことで無方向性電磁鋼板が得られるのである。
すなわち、スラブ加熱温度を1050℃以上1150℃以下とし、さらに熱間圧延を、仕上げ熱延終了温度が820℃以上920℃以下の範囲で、かつ熱延終了後の巻取温度が520℃以上620℃以下の範囲になるように行うものとする。
なお、スラブ加熱温度の好ましい範囲は1050℃以上1125℃以下、仕上げ熱延終了温度の好ましい範囲は、850℃以上900℃以下で、また熱延終了後の巻取温度の好ましい範囲は、550℃以上600℃以下である。
転炉で吹練して得た溶鋼を、脱ガス処理した後に鋳造して、表1に示す成分の鋼スラブを製造した。その後、表2に示すスラブ加熱温度、仕上げ熱延終了温度と熱延終了後の巻取温度条件で、2.0mm厚まで熱間圧延を行って熱延鋼板を得た。次いで、100%N2雰囲気で1000℃、30秒の熱延板焼鈍を施し、7%HClの溶液に80℃で60秒間浸漬する酸洗処理を行った後、表2に示す板厚まで冷間圧延を行った。その後、20%H2-80%N2雰囲気で1035℃、10秒の条件を用い仕上げ焼鈍を行った後、コーティング処理を行った。
得られた無方向性電磁鋼板から、圧延方向および圧延直角方向にエプスタイン試験片をそれぞれ切り出し、磁気特性(鉄損:W15/50、磁束密度:B50)を測定した。磁気特性はL+C特性で評価するとともに、表面外観の調査も行った。得られた結果を表2に併記する。なお、表面欠陥の発生状況は、鋼板の単位面積当りに存在する線状欠陥の長さで評価し、0.001(m/m2)未満を欠陥無(○)、0.001(m/m2)以上を欠陥有(×)とした。
また、本発明に従う熱延鋼板の製造条件により得られた発明例は、いずれも、磁気特性、表面外観共に良好な結果を得ていることがわかる。
転炉で吹練して得た溶鋼を、脱ガス処理した後に鋳造して、表3に示す成分の鋼スラブを製造した。その後、表4に示すスラブ加熱温度、仕上げ熱延終了温度と熱延終了後の巻取温度条件で、1.6mm厚まで熱間圧延を行った。次いで、100%N2雰囲気で1000℃、30秒の熱延板焼鈍を施し、7%HCl、80℃×60秒浸漬という条件の酸洗処理を行った後、表4に示す板厚まで冷間圧延を行った。その後、20%H2-80%N2雰囲気で1000℃、10秒の条件を用い仕上げ焼鈍を施し、コーティング処理を行った。
得られた無方向性電磁鋼板から、圧延方向および圧延直角方向にエプスタイン試験片をそれぞれ切り出し、磁気特性(鉄損:W10/400、磁束密度:B50)を測定した。磁気特性はL+C特性で評価するとともに、表面外観の調査も行った。得られた結果を表4に併記する。なお、表面欠陥の発生状況は、鋼板の単位面積当りに存在する線状欠陥の長さで評価し、0.001(m/m2)未満を欠陥無(○)、0.001(m/m2)以上を欠陥有(×)とした。
また、本発明に従う熱延鋼板の製造条件により得られた発明例は、いずれも、磁気特性、表面外観共に良好な結果を得ていることがわかる。
Claims (4)
- 質量%で、C:0.005%以下、Si:2.0%以上4.5%以下、Al:0.2%以上2.0%以下、Mn:0.1%以上2.0%以下、S:0.003%以下、N:0.003%以下、P:0.015%以下、Mo:0.002%以上0.03%以下、PbとBiを合計で0.0010%以下とし、さらにSnおよびSbのいずれか1種または2種を合計で0.005%以上0.2%以下含有し、残部Feおよび不可避的不純物の成分組成からなる熱延鋼板であって、該熱延鋼板を窒素雰囲気中、1000℃、30秒で焼鈍したのち、7%HCl溶液に80℃で60秒間浸漬した後の酸洗減量が、10g/m2以上35g/m2以下である無方向性電磁鋼板製造用の熱延鋼板。
- 前記熱延鋼板が、質量%で、さらに、Ca:0.001%以上0.005%以下、Mg:0.0002%以上0.005%以下、Cr:0.05%以上0.5%以下のうちから選んだ1種または2種以上を含有する請求項1に記載の無方向性電磁鋼板製造用の熱延鋼板。
- 質量%で、C:0.005%以下、Si:2.0%以上4.5%以下、Al:0.2%以上2.0%以下、Mn:0.1%以上2.0%以下、S:0.003%以下、N:0.003%以下、P:0.015%以下、Mo:0.002%以上0.03%以下、PbとBiを合計で0.0010%以下とし、さらにSnおよびSbのいずれか1種または2種を合計で0.005%以上0.2%以下含有し、残部Feおよび不可避的不純物の成分組成からなるスラブを、加熱後、熱間圧延を施して巻き取りを行なう一連の工程からなる無方向性電磁鋼板用の熱延鋼板の製造方法において、
上記スラブ加熱時の温度を1050℃以上1150℃以下、上記熱間圧延時の仕上げ熱延終了温度を820℃以上920℃以下とし、さらに上記熱間圧延時の熱延終了後の巻取温度を520℃以上620℃以下とする無方向性電磁鋼板製造用の熱延鋼板の製造方法。 - 前記スラブが、質量%で、さらに、Ca:0.001%以上0.005%以下、Mg:0.0002%以上0.005%以下、Cr:0.05%以上0.5%以下のうちから選んだ1種または2種以上を含有する請求項3に記載の無方向性電磁鋼板製造用の熱延鋼板の製造方法。
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Cited By (2)
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---|---|---|---|---|
WO2018221126A1 (ja) * | 2017-05-31 | 2018-12-06 | Jfeスチール株式会社 | 無方向性電磁鋼板とその製造方法 |
US11114227B2 (en) * | 2015-12-28 | 2021-09-07 | Jfe Steel Corporation | Non-oriented electrical steel sheet and method for manufacturing non-oriented electrical steel sheet |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP6233374B2 (ja) * | 2014-11-19 | 2017-11-22 | Jfeスチール株式会社 | 高けい素鋼板 |
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KR102325008B1 (ko) * | 2019-12-20 | 2021-11-10 | 주식회사 포스코 | 무방향성 전기강판 및 그 제조방법 |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5654370B2 (ja) | 1977-11-11 | 1981-12-25 | ||
JPS583027B2 (ja) | 1979-05-30 | 1983-01-19 | 川崎製鉄株式会社 | 鉄損の低い冷間圧延無方向性電磁鋼板 |
JPS58181822A (ja) | 1982-04-16 | 1983-10-24 | Kawasaki Steel Corp | 鉄損の低い無方向性珪素鋼板の製造方法 |
JPH0250190B2 (ja) | 1982-10-20 | 1990-11-01 | Kawasaki Steel Co | |
JPH03294422A (ja) | 1990-04-13 | 1991-12-25 | Nippon Steel Corp | 磁気特性の優れた無方向性電磁鋼板の製造方法 |
JPH0762174B2 (ja) * | 1989-08-18 | 1995-07-05 | 新日本製鐵株式会社 | 磁束密度の高い無方向性電磁厚板の製造方法 |
JPH0762175B2 (ja) * | 1989-08-18 | 1995-07-05 | 新日本製鐵株式会社 | 板厚方向の磁気特性の均一な無方向性電磁厚板の製造方法 |
JP2984185B2 (ja) | 1994-07-26 | 1999-11-29 | 川崎製鉄株式会社 | 磁気異方性の小さい低鉄損無方向性電磁鋼板の製造方法 |
JP2002294417A (ja) * | 2001-04-02 | 2002-10-09 | Nkk Corp | 疲労特性に優れた無方向性電磁鋼板 |
WO2004101831A1 (en) * | 2003-05-14 | 2004-11-25 | Ak Properties, Inc. | Improved method for production of non-oriented electrical steel strip |
JP4258164B2 (ja) | 2002-04-02 | 2009-04-30 | Jfeスチール株式会社 | 歪取焼鈍後の磁気特性および耐食性に優れた無方向性電磁鋼板 |
JP2012149337A (ja) * | 2010-12-28 | 2012-08-09 | Jfe Steel Corp | 高強度電磁鋼板およびその製造方法 |
JP2013091837A (ja) * | 2011-10-27 | 2013-05-16 | Nippon Steel & Sumitomo Metal Corp | 圧延方向の磁気特性が良好な無方向性電磁鋼板の製造方法 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5654370A (en) | 1979-10-11 | 1981-05-14 | Mitsubishi Electric Corp | Testing method of semiconductor |
JPS583027A (ja) | 1981-06-30 | 1983-01-08 | Fujitsu Ltd | デ−タ・ベ−スにおける意味情報処理方式 |
JPH0675230B2 (ja) | 1988-08-11 | 1994-09-21 | 隆弘 山下 | 速読訓練教材セット |
JP2701349B2 (ja) | 1988-08-26 | 1998-01-21 | 日本鋼管株式会社 | 磁気特性の優れた無方向性電磁鋼板およびその製造方法 |
US5062905A (en) | 1989-08-18 | 1991-11-05 | Nippon Steel Corporation | Method of producing non-oriented magnetic steel plate having high magnetic flux density |
JPH04258164A (ja) | 1991-02-13 | 1992-09-14 | Nec Corp | マスタースライス方式半導体集積回路 |
JP3296599B2 (ja) * | 1992-09-21 | 2002-07-02 | 川崎製鉄株式会社 | 高い張り剛性を有すると共にプレス成形性にも優れるプレス加工用薄鋼板 |
US6290783B1 (en) | 1999-02-01 | 2001-09-18 | Kawasaki Steel Corporation | Non-oriented electromagnetic steel sheet having excellent magnetic properties after stress relief annealing |
KR20100072376A (ko) * | 2002-05-08 | 2010-06-30 | 에이케이 스틸 프로퍼티즈 인코포레이티드 | 무방향성 전기 강판의 연속 주조방법 |
JP2005126748A (ja) | 2003-10-22 | 2005-05-19 | Jfe Steel Kk | 磁気特性の優れた高疲労強度無方向性電磁鋼板およびその製造方法 |
US7846271B2 (en) | 2004-12-21 | 2010-12-07 | Posco Co., Ltd. | Non-oriented electrical steel sheets with excellent magnetic properties and method for manufacturing the same |
KR100973627B1 (ko) | 2005-07-07 | 2010-08-02 | 수미도모 메탈 인더스트리즈, 리미티드 | 무방향성 전자 강판 및 그 제조 방법 |
JP5200376B2 (ja) * | 2006-12-26 | 2013-06-05 | Jfeスチール株式会社 | 無方向性電磁鋼板およびその製造方法 |
EP2460902B1 (en) | 2009-07-31 | 2016-05-04 | JFE Steel Corporation | Grain-oriented magnetic steel sheet |
JP5780013B2 (ja) * | 2011-06-28 | 2015-09-16 | Jfeスチール株式会社 | 無方向性電磁鋼板の製造方法 |
-
2013
- 2013-02-22 JP JP2013033387A patent/JP5668767B2/ja active Active
-
2014
- 2014-01-16 US US14/759,891 patent/US10026534B2/en active Active
- 2014-01-16 KR KR1020157021978A patent/KR101699194B1/ko active IP Right Grant
- 2014-01-16 CA CA2897921A patent/CA2897921C/en active Active
- 2014-01-16 WO PCT/JP2014/000200 patent/WO2014129106A1/ja active Application Filing
- 2014-01-16 EP EP14753500.9A patent/EP2960352B1/en active Active
- 2014-01-16 CN CN201480009330.5A patent/CN105008568B/zh active Active
- 2014-02-19 TW TW103105381A patent/TWI504761B/zh active
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5654370B2 (ja) | 1977-11-11 | 1981-12-25 | ||
JPS583027B2 (ja) | 1979-05-30 | 1983-01-19 | 川崎製鉄株式会社 | 鉄損の低い冷間圧延無方向性電磁鋼板 |
JPS58181822A (ja) | 1982-04-16 | 1983-10-24 | Kawasaki Steel Corp | 鉄損の低い無方向性珪素鋼板の製造方法 |
JPH0250190B2 (ja) | 1982-10-20 | 1990-11-01 | Kawasaki Steel Co | |
JPH0762175B2 (ja) * | 1989-08-18 | 1995-07-05 | 新日本製鐵株式会社 | 板厚方向の磁気特性の均一な無方向性電磁厚板の製造方法 |
JPH0762174B2 (ja) * | 1989-08-18 | 1995-07-05 | 新日本製鐵株式会社 | 磁束密度の高い無方向性電磁厚板の製造方法 |
JPH03294422A (ja) | 1990-04-13 | 1991-12-25 | Nippon Steel Corp | 磁気特性の優れた無方向性電磁鋼板の製造方法 |
JP2984185B2 (ja) | 1994-07-26 | 1999-11-29 | 川崎製鉄株式会社 | 磁気異方性の小さい低鉄損無方向性電磁鋼板の製造方法 |
JP2002294417A (ja) * | 2001-04-02 | 2002-10-09 | Nkk Corp | 疲労特性に優れた無方向性電磁鋼板 |
JP4258164B2 (ja) | 2002-04-02 | 2009-04-30 | Jfeスチール株式会社 | 歪取焼鈍後の磁気特性および耐食性に優れた無方向性電磁鋼板 |
WO2004101831A1 (en) * | 2003-05-14 | 2004-11-25 | Ak Properties, Inc. | Improved method for production of non-oriented electrical steel strip |
JP2012149337A (ja) * | 2010-12-28 | 2012-08-09 | Jfe Steel Corp | 高強度電磁鋼板およびその製造方法 |
JP2013091837A (ja) * | 2011-10-27 | 2013-05-16 | Nippon Steel & Sumitomo Metal Corp | 圧延方向の磁気特性が良好な無方向性電磁鋼板の製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2960352A4 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11114227B2 (en) * | 2015-12-28 | 2021-09-07 | Jfe Steel Corporation | Non-oriented electrical steel sheet and method for manufacturing non-oriented electrical steel sheet |
WO2018221126A1 (ja) * | 2017-05-31 | 2018-12-06 | Jfeスチール株式会社 | 無方向性電磁鋼板とその製造方法 |
JP2018204052A (ja) * | 2017-05-31 | 2018-12-27 | Jfeスチール株式会社 | 無方向性電磁鋼板とその製造方法 |
US11404189B2 (en) | 2017-05-31 | 2022-08-02 | Jfe Steel Corporation | Non-oriented electrical steel sheet and method for manufacturing the same |
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