JP6596016B2 - 無方向性電磁鋼板およびその製造方法 - Google Patents
無方向性電磁鋼板およびその製造方法 Download PDFInfo
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- 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
- 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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- 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
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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
- 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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- 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
- C21D8/1233—Cold rolling
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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
- 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
- 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
- C21D8/1272—Final recrystallisation annealing
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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
- 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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- 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
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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
- C22C38/002—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
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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
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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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
- C22C38/12—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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
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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
- H01F1/16—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 in the form of sheets
Description
[式1]
0.9<([Al]+[Mn])<1.5
[式2]
0.05<([Sb]+[Sn])<0.25
[式3]
0.04<([Sb]+[Sn])/([Al]+[Mn])<0.17
ただし、上記式1〜3中、[Al]、[Mn]、[Sb]、および[Sn]は、それぞれAl、Mn、Sb、およびSnの重量パーセント(%)を意味する。
[式1]
0.9<([Al]+[Mn])<1.5
[式2]
0.05<([Sb]+[Sn])<0.25
[式3]
0.04<([Sb]+[Sn])/([Al]+[Mn])<0.17
ただし、上記式1〜3中、[Al]、[Mn]、[Sb]、および[Sn]は、それぞれAl、Mn、Sb、およびSnの重量パーセント(%)を意味する。
[式1]
0.9<([Al]+[Mn])<1.5
[式2]
0.05<([Sb]+[Sn])<0.25
[式3]
0.04<([Sb]+[Sn])/([Al]+[Mn])<0.17
ただし、上記式1〜3中、[Al]、[Mn]、[Sb]、および[Sn]は、それぞれAl、Mn、Sb、およびSnの重量パーセント(%)を意味する。
以下、本発明を構成する成分元素の範囲とその成分元素間の添加比率を限定した理由について説明する。
Siは、材料の比抵抗を高めて鉄損を低下させる役割を果たし、2.5%未満で添加される場合、高周波鉄損の改善効果が不足し、3.5%を超えて添加される場合、材料の硬度が上昇して生産性および打抜性に劣るので、好ましくない。より具体的には、2.7〜3.4重量%であるとよい。
Alは、材料の比抵抗を高めて鉄損を低下させ、窒化物を形成する。Alが0.3%未満で添加されると、高周波鉄損の低減に効果がなく、窒化物が微細に形成されて磁性を劣化させ、1.5%を超えて添加されると、製鋼と連続鋳造などの全ての工程上に問題を生じて生産性を大きく低下させる。より具体的には、0.5〜1.0重量%であるとよい。
Mnは、材料の比抵抗を高めて鉄損を改善し、硫化物を形成させる役割を果たし、0.3%以下で添加されると、MnSが微細に析出して磁性を劣化させ、高周波鉄損の改善効果がほとんどない。Mnが1.5%を超えて添加されると、磁性に不利な{111}面が電磁鋼板の板面と15°内で平行をなしている組織の形成を助長して磁束密度が減少するので、Mnの添加量は0.1〜1.5%に制限することが好ましい。より具体的には、0.1〜0.7重量%であるとよい。
Nは、母材の内部に微細で長いAlN析出物を形成して結晶粒の成長を抑制して鉄損を劣化させるので、できるたけ少なく含有させることが好ましいが、本発明では、結晶粒界偏析元素によってNの拡散が制限されるので、その含有量を0.001〜0.005%に制限する。より具体的には、0.0021〜0.0024%であるとよい。
Sは、微細な析出物のMnSおよびCuSを形成して磁気特性を悪化させるため、低く管理することが好ましく、鋼中に必須不可欠に存在する元素で、製鋼で精練過程をなるべく除去することが好ましいが、本発明では、結晶粒界偏析元素によってSの拡散が制限されるので、その含有量を0.001〜0.005%に制限する。より具体的には、0.0019〜0.0024%であるとよい。
Sbは、鋼板の表面および結晶粒界に偏析して焼鈍時の表面酸化を抑制し、結晶粒界による元素の拡散を妨げ、{111}面が電磁鋼板の板面と15°内で平行をなしている組織の再結晶を妨げて集合組織を改善させる役割を果たす。0.02%以下で添加されると、その効果がなく、0.25%以上添加されると、結晶粒界偏析量の増加によって靭性が低下して磁性改善対比の生産性が低下するので、好ましくない。より具体的には、0.03〜0.12%であるとよい。
Snは、鋼板の表面および結晶粒界に偏析して焼鈍時の表面酸化を抑制し、結晶粒界による元素の拡散を妨げ、{111}面が電磁鋼板の板面と15°内で平行をなしている組織の再結晶を妨げて集合組織を改善させる役割を果たす。0.02%以下で添加されると、その効果がなく、0.25%以上添加されると、結晶粒界偏析量の増加によって靭性が低下して磁性改善対比の生産性が低下するので、好ましくない。より具体的には、0.03〜0.12%であるとよい。
Claims (2)
- 重量%で、C:0.0025%以下、Si:2.5〜3.5%、Al:0.3〜1.5%、Mn:0.1〜1.5%、N:0.001〜0.005%、S:0.001〜0.005%、Sb:0.02〜0.25%、およびSn:0.02〜0.25%を含有し、残部Feおよびその他不可避に混入する不純物からなり、
前記Al、Mn、Sb、およびSnの含有量が下記式1〜3を満足し、AlNおよびMnSの中から選択された1種または2種を含む複合介在物を含み、大きさが10nm以上の複合介在物の分布密度が0.02個/mm2以下であり、
電磁鋼板の厚さが0.15〜0.35mmであり、
電磁鋼板の平均の結晶粒の大きさが50〜150μmであり、
{001}面が電磁鋼板の板面と誤差範囲15°内で平行をなしている組織の分率が25%以上である、無方向性電磁鋼板。
[式1]
0.9<([Al]+[Mn])<1.5
[式2]
0.06≦([Sb]+[Sn])<0.25
[式3]
0.04<([Sb]+[Sn])/([Al]+[Mn])<0.17
ただし、上記式1〜3中、[Al]、[Mn]、[Sb]、および[Sn]は、それぞれAl、Mn、Sb、およびSnの重量パーセント(%)を意味する。 - 重量%で、C:0.0025%以下、Si:2.5〜3.5%、Al:0.3〜1.5%、Mn:0.1〜1.5%、N:0.001〜0.005%、S:0.001〜0.005%、Sb:0.02〜0.25%、およびSn:0.02〜0.25%を含有し、残部Feおよびその他不可避に混入する不純物からなり、前記Al、Mn、Sb、およびSnの含有量が下記式1〜3を満足するスラブを製造する段階と、
前記スラブを再加熱した後、熱間圧延して熱延鋼板を製造する段階と、
前記熱延鋼板を冷間圧延して冷延鋼板を製造する段階と、
前記冷延鋼板を最終焼鈍する段階とを含み、
前記最終焼鈍段階を経た電磁鋼板は、その中に、AlNおよびMnSの中から選択された1種または2種を含む複合介在物を含み、大きさが10nm以上の介在物の分布密度が0.02個/mm2以下であり、
前記電磁鋼板の厚さが0.15〜0.35mmであり、
前記電磁鋼板の平均の結晶粒の大きさが50〜150μmであり、
前記電磁鋼板は、{001}面が電磁鋼板の板面と誤差範囲15°内で平行をなしている組織の分率が25%以上であり、
前記スラブの再加熱は、1,100℃〜1,200℃の温度で行われ、
前記熱間圧延は、800℃以上の温度で仕上げられ、
前記熱延鋼板を熱延板焼鈍する段階をさらに含み、前記熱延板焼鈍は、850〜1,150℃の温度で行われ、
前記冷延鋼板は、70〜95%の圧下率を適用して0.15〜0.35mmの厚さに製造される、無方向性電磁鋼板の製造方法。
[式1]
0.9<([Al]+[Mn])<1.5
[式2]
0.06≦([Sb]+[Sn])<0.25
[式3]
0.04<([Sb]+[Sn])/([Al]+[Mn])<0.17
ただし、上記式1〜3中、[Al]、[Mn]、[Sb]、および[Sn]は、それぞれAl、Mn、Sb、およびSnの重量パーセント(%)を意味する。
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PCT/KR2014/011931 WO2015099315A1 (ko) | 2013-12-23 | 2014-12-05 | 무방향성 전기강판 및 그의 제조방법 |
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CN105908073B (zh) * | 2016-05-24 | 2017-12-08 | 嵊州北航投星空众创科技有限公司 | 一种电机用无取向硅钢的制备方法 |
CN105908072B (zh) * | 2016-05-24 | 2017-12-19 | 嵊州北航投星空众创科技有限公司 | 一种高强度无取向硅钢的制备方法 |
CN106756475B (zh) * | 2016-12-02 | 2019-04-30 | 武汉钢铁有限公司 | 中高频驱动电机用0.27mm厚无取向硅钢及生产方法 |
KR101903008B1 (ko) * | 2016-12-20 | 2018-10-01 | 주식회사 포스코 | 무방향성 전기강판 및 그 제조방법 |
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JP7127308B2 (ja) * | 2018-03-16 | 2022-08-30 | 日本製鉄株式会社 | 無方向性電磁鋼板 |
PL3770294T3 (pl) * | 2018-03-23 | 2024-02-19 | Nippon Steel Corporation | Blacha cienka z niezorientowanej stali elektrotechnicznej |
US20220396848A1 (en) * | 2019-11-12 | 2022-12-15 | Lg Electronics Inc. | Non-oriented electrical steel sheet and manufacturing method therefore |
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PL2832882T3 (pl) * | 2012-03-29 | 2020-02-28 | Nippon Steel Corporation | Blacha cienka z niezorientowanej stali elektrotechnicznej i sposób jej wytwarzania |
CN102634729B (zh) * | 2012-04-01 | 2013-07-17 | 首钢总公司 | 一种低铁损高磁感高牌号无取向硅钢的制备方法 |
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