JP6503464B2 - 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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- 229910000565 Non-oriented electrical steel Inorganic materials 0.000 title claims description 24
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 238000000137 annealing Methods 0.000 claims description 66
- 229910000831 Steel Inorganic materials 0.000 claims description 33
- 239000010959 steel Substances 0.000 claims description 33
- 230000004907 flux Effects 0.000 claims description 27
- 239000013078 crystal Substances 0.000 claims description 22
- 238000005096 rolling process Methods 0.000 claims description 17
- 238000005098 hot rolling Methods 0.000 claims description 11
- 229910052698 phosphorus Inorganic materials 0.000 claims description 11
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 238000005097 cold rolling Methods 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 20
- 229910052742 iron Inorganic materials 0.000 description 8
- 230000007423 decrease Effects 0.000 description 6
- 230000005389 magnetism Effects 0.000 description 4
- 230000005415 magnetization Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 229910001566 austenite Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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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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- 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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- 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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- C21D6/00—Heat treatment of ferrous alloys
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- 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
- C21D8/1205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a particular fabrication or treatment of ingot or slab
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- 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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- 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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- 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
- C21D8/1244—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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- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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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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- C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
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- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
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- 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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- Manufacturing Of Steel Electrode Plates (AREA)
- Soft Magnetic Materials (AREA)
Description
ここで、[Si]は、Siの添加量(重量%)、[Al]は、Alの添加量(重量%)である。
重量%で、Si:3.0%、Mn:0.4%、C:0.002%、N:0.003%、およびTi:0.001%を含み、Sn、Sb、P、S、およびAlは、Al:0.0005%〜0.02%、Sn:0.005%〜0.15%、Sb:0.005%〜0.15%、P:0.001%〜0.15%、およびS:0.0008%〜0.015%の範囲を有するようにするが、Sn、Sb、P、S、およびAlの含有量を調節して、図2のX軸のような([Sn]+[Sb]+[P]+20*[S])/[Al]の値を有するスラブを製造した。
重量%で、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%、およびS:0.005%を含み、残部はFeおよび不純物であるスラブを製造した。前記スラブを1150℃に加熱した後、熱間圧延して熱延板を製造した。熱間圧延時、熱間仕上げ圧延は900℃で実施した。以降、1100℃で熱延板焼鈍し、冷間圧延して冷延板を製造した。熱間仕上げ圧延時の温度から熱延板焼鈍温度までの焼鈍時間は、2分間であった。前記冷延板は、図3に示された温度で5秒間冷延板焼鈍した。
Claims (7)
- 重量%で、Si:1.5%〜4.0%、Mn:0.02%〜3.0%、C:0.005%以下(0%を含まない)、N:0.005%以下(0%を含まない)、Ti:0.003%以下(0%を含まない)、Al:0.0005%〜0.02%、Sn:0.005%〜0.15%、P:0.001%〜0.15%、S:0.0008%〜0.015%、およびSb:0.005%〜0.15%を含み、残部はFeおよび不純物であり、([Sn]+[Sb]+[P]+20*[S])/[Al]の値が40以上であ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、
前記熱延板を熱延板焼鈍する段階と、
前記熱延板焼鈍が完了した鋼板を冷間圧延して冷延板を製造する段階と、
前記冷延板を冷延板焼鈍する段階とを含み、
前記熱延板焼鈍する段階における熱延板焼鈍温度が前記冷延板焼鈍する段階における冷延板焼鈍温度よりも高く、前記冷延板焼鈍する段階における冷延板焼鈍温度と、前記熱延板焼鈍する段階における熱延板焼鈍温度との差は、100℃以下であり、
前記熱延板焼鈍する段階における熱延板焼鈍温度は900℃〜1200℃であり、
得られる電磁鋼板の集合組織は、オイラー方位として(30,0,45)の方位を有する結晶粒の体積分率が、オイラー方位として(10,0,45)の方位を有する結晶粒の体積分率の1.5倍以上であり、
得られる電磁鋼板のB r 値が1.79(T)以上である、無方向性電磁鋼板の製造方法。
(ここで、[Al]、[Sn]、[Sb]、[P]、および[S]はそれぞれ、Al、Sn、Sb、P、およびSの重量パーセント(%)を意味し、
B r =7.87/(7.87−0.065*[Si]−0.1105*[Al])*B 50 であり、[Si]は、Siの添加量(重量%)であり、[Al]は、Alの添加量(重量%)であり、B 50 は、5,000A/mで誘起したとき、鋼板に誘導される磁束密度の値である。) - 前記熱延板焼鈍する段階における熱延板焼鈍温度は、前記熱間圧延して熱延板を製造する段階における熱間仕上げ圧延時の温度より150℃以上高い温度で実施する、請求項1に記載の無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ける熱間仕上げ圧延時の温度から熱延板焼鈍温度までの焼鈍時間は、2分間以下である、請求項2に記載の無方向性電磁鋼板の製造方法。
- 前記冷延板焼鈍する段階における冷延板焼鈍時間は、5秒間以上である、請求項3に記載の無方向性電磁鋼板の製造方法。
- 前記熱間仕上げ圧延時の温度は、920℃以下である、請求項1〜4のいずれか1項に記載の無方向性電磁鋼板の製造方法。
- 前記熱延板焼鈍が完了した鋼板の結晶粒の粒径は、80μm以上である、請求項5に記載の無方向性電磁鋼板の製造方法。
- 重量%で、Si:1.5%〜4.0%、Mn:0.02%〜3.0%、C:0.005%以下(0%を含まない)、N:0.005%以下(0%を含まない)、Ti:0.003%以下(0%を含まない)、Al:0.0005%〜0.02%、Sn:0.005%〜0.15%、P:0.001%〜0.15%、S:0.0008%〜0.015%、およびSb:0.005%〜0.15%を含み、残部はFeおよび不純物であり、([Sn]+[Sb]+[P]+20*[S])/[Al]の値が40以上であり、
集合組織は、オイラー方位として(30,0,45)の方位を有する結晶粒の体積分率が、オイラー方位として(10,0,45)の方位を有する結晶粒の体積分率の1.5倍以上であり、
電磁鋼板のB r 値が1.79(T)以上である、無方向性電磁鋼板。
(ここで、[Al]、[Sn]、[Sb]、[P]、および[S]はそれぞれ、Al、Sn、Sb、P、およびSの重量パーセント(%)を意味すし、
B r =7.87/(7.87−0.065*[Si]−0.1105*[Al])*B 50 であり、[Si]は、Siの添加量(重量%)であり、[Al]は、Alの添加量(重量%)であり、B 50 は、5,000A/mで誘起したとき、鋼板に誘導される磁束密度の値である。)
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KR101223113B1 (ko) * | 2010-12-27 | 2013-01-17 | 주식회사 포스코 | 압연방향의 투자율이 우수한 저철손 고자속밀도 무방향성 전기강판 및 그 제조방법 |
JP5712863B2 (ja) | 2011-08-23 | 2015-05-07 | 新日鐵住金株式会社 | 無方向性電磁鋼板の製造方法 |
JP5263363B2 (ja) | 2011-10-11 | 2013-08-14 | Jfeスチール株式会社 | 無方向性電磁鋼板の製造方法 |
JP5892327B2 (ja) * | 2012-03-15 | 2016-03-23 | Jfeスチール株式会社 | 無方向性電磁鋼板の製造方法 |
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 |
KR101493059B1 (ko) | 2012-12-27 | 2015-02-11 | 주식회사 포스코 | 무방향성 전기강판 및 그 제조방법 |
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