JP6496411B2 - 方向性電磁鋼板およびその製造方法 - Google Patents
方向性電磁鋼板およびその製造方法 Download PDFInfo
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- JP6496411B2 JP6496411B2 JP2017532101A JP2017532101A JP6496411B2 JP 6496411 B2 JP6496411 B2 JP 6496411B2 JP 2017532101 A JP2017532101 A JP 2017532101A JP 2017532101 A JP2017532101 A JP 2017532101A JP 6496411 B2 JP6496411 B2 JP 6496411B2
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- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 229910000976 Electrical steel Inorganic materials 0.000 title description 7
- 238000000137 annealing Methods 0.000 claims description 77
- 238000002791 soaking Methods 0.000 claims description 76
- 229910000831 Steel Inorganic materials 0.000 claims description 64
- 239000010959 steel Substances 0.000 claims description 64
- 229910052758 niobium Inorganic materials 0.000 claims description 43
- 229910052719 titanium Inorganic materials 0.000 claims description 43
- 229910052720 vanadium Inorganic materials 0.000 claims description 43
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 42
- 229910052796 boron Inorganic materials 0.000 claims description 41
- 238000001816 cooling Methods 0.000 claims description 41
- 229910052757 nitrogen Inorganic materials 0.000 claims description 27
- 238000005097 cold rolling Methods 0.000 claims description 25
- 229910001224 Grain-oriented electrical steel Inorganic materials 0.000 claims description 24
- 229910052782 aluminium Inorganic materials 0.000 claims description 21
- 238000005098 hot rolling Methods 0.000 claims description 21
- 238000005096 rolling process Methods 0.000 claims description 20
- 238000005261 decarburization Methods 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 14
- 229910052718 tin Inorganic materials 0.000 claims description 14
- 229910052748 manganese Inorganic materials 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- 239000012535 impurity Substances 0.000 claims description 11
- 229910052711 selenium Inorganic materials 0.000 claims description 10
- 229910052717 sulfur Inorganic materials 0.000 claims description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims description 9
- GQPLMRYTRLFLPF-UHFFFAOYSA-N nitrous oxide Inorganic materials [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 claims description 8
- 229910052787 antimony Inorganic materials 0.000 claims description 6
- 229910052785 arsenic Inorganic materials 0.000 claims description 6
- 229910052797 bismuth Inorganic materials 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 229910052745 lead Inorganic materials 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 150000004767 nitrides Chemical class 0.000 description 37
- 239000003112 inhibitor Substances 0.000 description 29
- 238000001953 recrystallisation Methods 0.000 description 28
- 239000013078 crystal Substances 0.000 description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 239000012298 atmosphere Substances 0.000 description 12
- 150000001247 metal acetylides Chemical class 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- 239000007789 gas Substances 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 9
- 239000002244 precipitate Substances 0.000 description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- 229910052739 hydrogen Inorganic materials 0.000 description 8
- 238000001556 precipitation Methods 0.000 description 8
- 230000002829 reductive effect Effects 0.000 description 8
- 239000001257 hydrogen Substances 0.000 description 7
- 230000005389 magnetism Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 150000002431 hydrogen Chemical class 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000009628 steelmaking Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000005121 nitriding Methods 0.000 description 3
- 239000006104 solid solution Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000003966 growth inhibitor Substances 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
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- 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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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
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- C21D8/0257—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment with diffusion of elements, e.g. decarburising, nitriding
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- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
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- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0273—Final recrystallisation annealing
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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
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- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/24—Nitriding
- C23C8/26—Nitriding of ferrous surfaces
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
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- 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
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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
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- 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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Description
重量%で、C:0.055%、Si:3.3%、Mn:0.12%、Al:0.024%、S:0.0050%、Se:0.0030%、N:0.0050%、P:0.03%、および、Sn:0.06%を含み、Ti、V、Nb、および、Bを表1のように含み、残部Feとその他不可避に添加される不純物を含有するスラブを1150℃の温度に加熱した後、熱間圧延した。
重量%で、C:0.051%、Si:3.2%、Mn:0.09%、Al:0.026%、S:0.0040%、Se:0.0020%、N:0.006%、P:0.05%、Sn:0.05%、Ti:0.0080%、V:0.0051%、Nb:0.0035%、および、B:0.0035%を含み、残部Feとその他不可避に添加される不純物を含有するスラブを1150℃の温度まで加熱した後、熱間圧延した。その後、表2のように熱間圧延終了温度および巻取温度を異ならせて、厚さ2.3mmの熱延板を製造した。前記熱延板を25℃/秒以上の昇温速度で一次均熱温度:1080℃まで加熱して30秒維持した後、15℃/秒の冷却速度で二次均熱温度:900℃まで冷却してから120秒間維持し、20℃/秒の冷却速度で常温まで冷却した。
重量%で、C:0.058%、Si:3.4%、Mn:0.15%、Al:0.028%、S:0.0030%、Se:0.0050%、N:0.008%、P:0.03%、Sn:0.08%、Ti:0.0050%、V:0.0050%、Nb:0.0150%、および、B:0.0035%を含み、残部Feとその他不可避に添加される不純物を含有するスラブを1150℃の温度に加熱した後、熱間圧延した。熱間圧延時、880℃で圧延を終了し、厚さ2.6mmの熱延板を製造した後、530℃で巻取った。
重量%で、C:0.048%、Si:3.2%、Mn:0.10%、Al:0.032%、S:0.0030%、Se:0.0030%、N:0.0080%、P:0.07%、Sn:0.03%、Ti:0.0100%、V:0.0030%、Nb:0.0050%、および、B:0.0025%を含み、残部Feとその他不可避に添加される不純物を含有するスラブを1150℃の温度に加熱した後、熱間圧延した。
Claims (8)
- スラブの全体組成100重量%を基準として、C:0.01%〜0.1%、Si:2.0%〜4.0%、Mn:0.01%〜0.30%、Al:0.005%〜0.040%、Sn:0.005%〜0.20%、S:0.0005%〜0.020%、Se:0.0005%〜0.020%、P:0.005%〜0.1%、N:0.0005%〜0.015%、Ti:0.0001%〜0.020%、V:0.0001%〜0.020%、Nb:0.0001%〜0.020%、および、B:0.0001%〜0.020%を含み、残部はFeおよびその他不純物からなるスラブを加熱した後、熱間圧延して熱延板を製造する段階と、
前記熱延板を焼鈍する段階と、
熱延板焼鈍が完了した鋼板を冷却した後、冷間圧延して冷延板を製造する段階と、
前記冷延板を脱炭焼鈍後に浸窒焼鈍するか、脱炭焼鈍および浸窒焼鈍を同時に実施する段階と、
前記脱炭焼鈍および浸窒焼鈍が完了した鋼板を最終焼鈍する段階とを含むが、
前記熱間圧延して熱延板を製造する段階において、熱間圧延終了温度は、850℃以上であり、
前記熱延板を製造する段階の後、熱延板を巻取る段階をさらに含み、熱延板の巻取温度は、600℃以下であり、
前記熱延板焼鈍する段階は、鋼板を昇温させる昇温段階と、昇温が完了した後に鋼板を一次均熱する段階と、一次均熱が完了した鋼板を冷却した後、二次均熱する段階と、二次均熱が完了した鋼板を冷却する段階とを含み、
前記昇温段階は、15℃/秒以上の昇温速度で一次均熱温度まで昇温し、
前記一次均熱する段階は、均熱温度1000℃〜1150℃で実施し、前記二次均熱する段階は、均熱温度700℃〜1050℃で実施するが、一次均熱温度と二次均熱温度との差は、20℃以上であり、一次均熱が完了した鋼板を冷却する時、冷却速度は、10℃/秒以上であり、二次均熱が完了した鋼板を200℃以下の温度に冷却するが、冷却速度は、20℃/秒以上であり、
前記浸窒焼鈍後、鋼板の総窒素含有量が0.0180〜0.0250重量%である、
方向性電磁鋼板の製造方法。 - スラブの全体組成100重量%を基準として、C:0.01%〜0.1%、Si:2.0%〜4.0%、Mn:0.01%〜0.30%、Al:0.005%〜0.040%、Sn:0.005%〜0.20%、S:0.0005%〜0.020%、Se:0.0005%〜0.020%、P:0.005%〜0.1%、N:0.0005%〜0.015%、Ti:0.0001%〜0.020%、V:0.0001%〜0.020%、Nb:0.0001%〜0.020%、および、B:0.0001%〜0.020%を含み、
Cr:0.001%〜0.20%、Ni:0.001%〜0.20%、Cu:0.001%〜0.90%、Mo:0.002%〜0.1%、Sb:0.005%〜0.20%、Bi:0.0005%〜0.1%、Pb:0.0001%〜0.02%、As:0.0001%〜0.02%、またはこれらの組み合わせをさらに含み、
残部はFeおよびその他不純物からなるスラブを加熱した後、熱間圧延して熱延板を製造する段階と、
前記熱延板を焼鈍する段階と、
熱延板焼鈍が完了した鋼板を冷却した後、冷間圧延して冷延板を製造する段階と、
前記冷延板を脱炭焼鈍後に浸窒焼鈍するか、脱炭焼鈍および浸窒焼鈍を同時に実施する段階と、
前記脱炭焼鈍および浸窒焼鈍が完了した鋼板を最終焼鈍する段階とを含むが、
前記熱間圧延して熱延板を製造する段階において、熱間圧延終了温度は、850℃以上であり、
前記熱延板を製造する段階の後、熱延板を巻取る段階をさらに含み、熱延板の巻取温度は、600℃以下であり、
前記熱延板焼鈍する段階は、鋼板を昇温させる昇温段階と、昇温が完了した後に鋼板を一次均熱する段階と、一次均熱が完了した鋼板を冷却した後、二次均熱する段階と、二次均熱が完了した鋼板を冷却する段階とを含み、
前記昇温段階は、15℃/秒以上の昇温速度で一次均熱温度まで昇温し、
前記一次均熱する段階は、均熱温度1000℃〜1150℃で実施し、前記二次均熱する段階は、均熱温度700℃〜1050℃で実施するが、一次均熱温度と二次均熱温度との差は、20℃以上であり、一次均熱が完了した鋼板を冷却する時、冷却速度は、10℃/秒以上であり、二次均熱が完了した鋼板を200℃以下の温度に冷却するが、冷却速度は、20℃/秒以上であり、
前記浸窒焼鈍後、鋼板の総窒素含有量が0.0180〜0.0250重量%である、
方向性電磁鋼板の製造方法。 - 前記熱延板焼鈍する段階において、
前記一次均熱する段階は、5秒以上均熱処理する、請求項1または2に記載の方向性電磁鋼板の製造方法。 - 前記熱延板焼鈍する段階において、
前記二次均熱する段階は、1秒以上均熱処理する、請求項3に記載の方向性電磁鋼板の製造方法。 - 前記冷間圧延時の圧下率は、80%以上である、請求項4に記載の方向性電磁鋼板の製造方法。
(ここで、圧下率は、(圧延前の鋼板の厚さ−圧延後の鋼板の厚さ)/(圧延前の鋼板の厚さ)である) - 前記冷間圧延は、1パスの圧延によって最終厚さまで冷間圧延するか、
中間焼鈍を含む2パス以上の圧延によって最終厚さまで冷間圧延するが、
最小1パスは、150℃〜300℃で実施する、請求項5に記載の方向性電磁鋼板の製造方法。 - 前記スラブに含まれているTi、V、Nb、およびB成分の総含有量は、スラブの全体組成100重量%を基準として、0.0004%〜0.043%である、請求項1〜6のいずれか1項に記載の方向性電磁鋼板の製造方法。
- 前記スラブに含まれているTi、V、Nb、およびB成分の総含有量は、スラブの全体組成100重量%を基準として、0.0004%〜0.040%である、請求項1〜6のいずれか1項に記載の方向性電磁鋼板の製造方法。
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JP2018505962A (ja) | 2018-03-01 |
EP3235914A1 (en) | 2017-10-25 |
KR101633255B1 (ko) | 2016-07-08 |
EP3235914B1 (en) | 2021-03-31 |
US20180002772A1 (en) | 2018-01-04 |
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