WO2012087045A3 - 저철손 고강도 무방향성 전기강판 및 그 제조방법 - Google Patents

저철손 고강도 무방향성 전기강판 및 그 제조방법 Download PDF

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Publication number
WO2012087045A3
WO2012087045A3 PCT/KR2011/009979 KR2011009979W WO2012087045A3 WO 2012087045 A3 WO2012087045 A3 WO 2012087045A3 KR 2011009979 W KR2011009979 W KR 2011009979W WO 2012087045 A3 WO2012087045 A3 WO 2012087045A3
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WO
WIPO (PCT)
Prior art keywords
weight
less
steel sheet
iron loss
low iron
Prior art date
Application number
PCT/KR2011/009979
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English (en)
French (fr)
Other versions
WO2012087045A2 (ko
Inventor
김재성
김재관
신수용
김용수
Original Assignee
주식회사 포스코
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020100133456A external-priority patent/KR101296115B1/ko
Priority claimed from KR1020110070891A external-priority patent/KR101308725B1/ko
Priority claimed from KR1020110070893A external-priority patent/KR101308727B1/ko
Priority claimed from KR1020110070892A external-priority patent/KR101308726B1/ko
Priority claimed from KR1020110070894A external-priority patent/KR101308728B1/ko
Application filed by 주식회사 포스코 filed Critical 주식회사 포스코
Priority to EP11851879.4A priority Critical patent/EP2657357B1/en
Priority to US13/824,082 priority patent/US9260764B2/en
Priority to JP2013540908A priority patent/JP5990528B2/ja
Publication of WO2012087045A2 publication Critical patent/WO2012087045A2/ko
Publication of WO2012087045A3 publication Critical patent/WO2012087045A3/ko

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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
    • C21D8/02—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
    • C21D8/0273—Final recrystallisation annealing
    • 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
    • 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
    • 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
    • C22C38/02—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
    • 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
    • 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
    • C21D2201/00—Treatment for obtaining particular effects
    • C21D2201/05—Grain orientation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

본 발명은 저철손 고강도 무방향성 전기강판 및 그 제조방법에 관한 것으로, 중량%로 C: 0.005% 이하, Si: 4.0% 이하, P: 0.1% 이하, S: 0.03% 이하, Mn: 0.1~2.0%, Al: 0.3~2.0%, N: 0.003% 이하, Ti: 0.005% 이하, 잔부 Fe 및 기타 불가피하게 혼입되는 불순물로 이루어지는 슬라브를 열간압연하고, 냉간압연한 후, 강판 단면에서의 미재결정 조직의 면적분율이 50% 이하(0%를 포함하지 않음)가 되도록 최종소둔을 실시하는 저철손 고강도 무방향성 전기강판의 제조방법 등을 제공한다. 본 발명에 따르면, 강판 단면에서의 미재결정 조직의 면적분율을 적정 수준으로 관리하고, 재결정된 결정립의 평균 결정립 크기를 제어함으로써 강도가 우수하면서도 철손이 낮은 무방향성 전기강판을 제조할 수 있으며, 최종소둔의 온도변화에 따른 항복강도의 변화율이 낮은 온도 영역에서 최종소둔을 실시함으로써 연신률의 저하를 방지하고, 자성과 강도의 편차를 줄여 저철손 고강도 특성을 안정적으로 확보할 수 있다.
PCT/KR2011/009979 2010-12-23 2011-12-22 저철손 고강도 무방향성 전기강판 및 그 제조방법 WO2012087045A2 (ko)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP11851879.4A EP2657357B1 (en) 2010-12-23 2011-12-22 Low iron loss high strength non-oriented electromagnetic steel sheet and method for manufacturing same
US13/824,082 US9260764B2 (en) 2010-12-23 2011-12-22 Low iron loss high strength non-oriented electromagnetic steel sheet and method for manufacturing same
JP2013540908A JP5990528B2 (ja) 2010-12-23 2011-12-22 低鉄損高強度無方向性電磁鋼板およびその製造方法

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
KR1020100133456A KR101296115B1 (ko) 2010-12-23 2010-12-23 저철손 고강도 무방향성 전기강판 및 그 제조방법
KR10-2010-0133456 2010-12-23
KR1020110070891A KR101308725B1 (ko) 2011-07-18 2011-07-18 저철손 고강도 무방향성 전기강판 및 그 제조방법
KR10-2011-0070894 2011-07-18
KR10-2011-0070892 2011-07-18
KR1020110070893A KR101308727B1 (ko) 2011-07-18 2011-07-18 저철손 고강도 무방향성 전기강판 및 그 제조방법
KR1020110070892A KR101308726B1 (ko) 2011-07-18 2011-07-18 저철손 고강도 무방향성 전기강판 및 그 제조방법
KR1020110070894A KR101308728B1 (ko) 2011-07-18 2011-07-18 저철손 고강도 무방향성 전기강판 및 그 제조방법
KR10-2011-0070893 2011-07-18
KR10-2011-0070891 2011-07-18

Publications (2)

Publication Number Publication Date
WO2012087045A2 WO2012087045A2 (ko) 2012-06-28
WO2012087045A3 true WO2012087045A3 (ko) 2012-10-04

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Application Number Title Priority Date Filing Date
PCT/KR2011/009979 WO2012087045A2 (ko) 2010-12-23 2011-12-22 저철손 고강도 무방향성 전기강판 및 그 제조방법

Country Status (4)

Country Link
US (1) US9260764B2 (ko)
EP (1) EP2657357B1 (ko)
JP (1) JP5990528B2 (ko)
WO (1) WO2012087045A2 (ko)

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EP2832882B1 (en) * 2012-03-29 2019-09-18 Nippon Steel Corporation Non-oriented electromagnetic steel sheet and method for producing same
KR101719445B1 (ko) * 2013-04-09 2017-03-23 신닛테츠스미킨 카부시키카이샤 무방향성 전자 강판 및 그 제조 방법
CN104789862A (zh) * 2015-03-20 2015-07-22 宝山钢铁股份有限公司 表面状态良好的高磁感低铁损无取向电工钢板及其制造方法
KR102009587B1 (ko) * 2015-04-27 2019-08-09 닛폰세이테츠 가부시키가이샤 무방향성 전자 강판
JP6852965B2 (ja) * 2015-09-16 2021-03-31 日本製鉄株式会社 電磁鋼板とその製造方法
JP6852966B2 (ja) * 2015-09-16 2021-03-31 日本製鉄株式会社 無方向性電磁鋼板を使用したモータ用高強度部材とその製造方法
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JP6518950B2 (ja) * 2016-10-31 2019-05-29 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
KR102120276B1 (ko) * 2018-09-27 2020-06-08 주식회사 포스코 무방향성 전기강판 및 그 제조방법
WO2020085448A1 (ja) * 2018-10-24 2020-04-30 日本製鉄株式会社 無方向性電磁鋼板とそれを用いた積層コアの製造方法
KR102164113B1 (ko) * 2018-11-29 2020-10-13 주식회사 포스코 낮은 철손 및 우수한 표면품질을 갖는 무방향성 전기강판 및 그 제조방법
KR102178341B1 (ko) * 2018-11-30 2020-11-12 주식회사 포스코 자성이 우수한 무방향성 전기강판 및 그 제조방법
MX2021008802A (es) * 2019-01-24 2021-08-24 Jfe Steel Corp Chapa de acero electrico no orientado y metodo para producir el mismo.
CN110340144B (zh) * 2019-07-02 2021-01-08 北京首钢股份有限公司 一种薄规格超高硅硅钢的热轧轧制方法
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JPH06330255A (ja) * 1993-05-21 1994-11-29 Nippon Steel Corp 高張力無方向性電磁鋼板およびその製造方法
JP2005113185A (ja) * 2003-10-06 2005-04-28 Nippon Steel Corp 磁気特性の優れた高強度電磁鋼板とその製造方法
JP2007186790A (ja) * 2005-12-15 2007-07-26 Jfe Steel Kk 高強度無方向性電磁鋼板およびその製造方法
JP2007254801A (ja) * 2006-03-22 2007-10-04 Jfe Steel Kk 高強度無方向性電磁鋼板およびその製造方法

Also Published As

Publication number Publication date
EP2657357B1 (en) 2018-08-22
JP2014503685A (ja) 2014-02-13
WO2012087045A2 (ko) 2012-06-28
EP2657357A4 (en) 2016-03-02
US9260764B2 (en) 2016-02-16
EP2657357A2 (en) 2013-10-30
US20130167987A1 (en) 2013-07-04
JP5990528B2 (ja) 2016-09-14

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