KR970043177A - Non-oriented electrical steel sheet with low iron loss and manufacturing method - Google Patents

Non-oriented electrical steel sheet with low iron loss and manufacturing method Download PDF

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Publication number
KR970043177A
KR970043177A KR1019950051398A KR19950051398A KR970043177A KR 970043177 A KR970043177 A KR 970043177A KR 1019950051398 A KR1019950051398 A KR 1019950051398A KR 19950051398 A KR19950051398 A KR 19950051398A KR 970043177 A KR970043177 A KR 970043177A
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South Korea
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less
steel sheet
oriented electrical
electrical steel
temperature
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KR1019950051398A
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Korean (ko)
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KR100240993B1 (en
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배병근
우종수
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김종진
포항종합제철 주식회사
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Publication of KR100240993B1 publication Critical patent/KR100240993B1/en

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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
    • 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
    • C21D6/001—Heat treatment of ferrous alloys containing Ni
    • 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
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • 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
    • 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
    • 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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper

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

Abstract

본 발명은 모터, 발진기와 같은 중대형 회전기와 소형변압기와 같은 정지기의 철심으로 사용되는 무방향성 전기강판의 제조방법에 관한 것으로, 본 발명은 강의 열간압연 조건을 제어하여 Sn, Ni, Cu 및 Mn을 함유하고 Si함량이 많은 소재에서도 철손이 낮은 무방향성 전기강판 및 이를 제조할 수 있는 방법을 제공하고자 하는데, 그 목적이 있다.The present invention relates to a method for manufacturing a non-oriented electrical steel sheet used as an iron core of a medium and large rotor such as a motor, an oscillator and a stationary transformer, the present invention controls the hot rolling conditions of steel, Sn, Ni, Cu and Mn To provide a non-oriented electrical steel sheet containing a low iron loss even in a material containing a lot of Si and a method for manufacturing the same, and its purpose is to.

상기한 목적을 달성하기 위한 본 발명은 중량%로, C:0.01% 이하, Si:2.0-3.5%, Mn:1.0-1.5%, P:0.01-0.15% S:0.008% 이하, Al:1.0% 이하, N:0.007% 이하, Sn:0.03-0.3%, Ni:0.05-0.7%, Cu:0.03-0.5%, 잔부: Fe 및 기타 불가피하게 함유되는 불순물로 조성되는 철손이 낮은 무방향성 전기강판 및 이와같이 조성되는 강의 슬라브를 1250℃ 이하의 온도로 가열한후, 열간압연시 사상압연의 마무리압연을 800-950℃의 온도범위의 페라이트 상에서 7-20%의 압하율로 압연하고, 650℃ 이하의 온도로 권취하여, 900℃ 이상의 온도로 연속소둔한 다음, 산세하고 1회냉간압연 또는 중간소둔을 포함한 2회냉간압연후 고온소둔하는 철손이 낮은 무방향성 전기강판의 제조방법에 관한 것을 그 요지로 한다.The present invention for achieving the above object by weight, C: 0.01% or less, Si: 2.0-3.5%, Mn: 1.0-1.5%, P: 0.01-0.15% S: 0.008% or less, Al: 1.0% Or less, N: 0.007% or less, Sn: 0.03-0.3%, Ni: 0.05-0.7%, Cu: 0.03-0.5%, remainder: non-oriented electrical steel sheet having a low iron loss composed of Fe and other unavoidable impurities After heating the slab of the steel thus formed to a temperature of 1250 ° C. or lower, the finish rolling of the filament rolling during hot rolling is rolled at a reduction ratio of 7-20% on a ferrite in the temperature range of 800-950 ° C., and the temperature is lower than 650 ° C. The present invention relates to a method for manufacturing a non-oriented electrical steel sheet having low iron loss, which is wound up to a temperature, continuously annealed to a temperature of 900 ° C. or higher, then pickled, and subjected to high temperature annealing after two cold rolling including one cold rolling or intermediate annealing. do.

Description

철손이 낮은 무방향성 전기강판 및 그 제조방법Non-oriented electrical steel sheet with low iron loss and manufacturing method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (2)

중량%로, C:0.01% 이하, Si:2.0-3.5%, Mn:1.0-1.5%, P:0.01-0.15% S:0.008% 이하, Al:1.0% 이하, N:0.007% 이하, Sn:0.03-0.3%, Ni:0.05-0.7%, Cu:0.03-0.5%, 잔부: Fe 및 기타 불가피하게 함유되는 불순물로 조성됨을 특징으로 하는 철손이 낮은 무방향성 전기강판.By weight%, C: 0.01% or less, Si: 2.0-3.5%, Mn: 1.0-1.5%, P: 0.011-0.15% S: 0.008% or less, Al: 1.0% or less, N: 0.007% or less, Sn: 0.03-0.3%, Ni: 0.05-0.7%, Cu: 0.03-0.5%, Remainder: Low iron loss non-oriented electrical steel sheet characterized by being composed of Fe and other inevitable impurities. 무방향성 전기강판의 제조방법에 있어서, 중량%로, C:0.01% 이하, Si:2.0-3.5%, Mn:1.0-1.5%, P:0.01-0.15% S:0.008% 이하, Al:1.0% 이하, N:0.007% 이하, Sn:0.03-0.3%, Ni:0.05-0.7%, Cu:0.03-0.5%, 잔부: Fe 및 기타 불가피하게 함유되는 불순물로 조성되는 강의 슬라브를 1250℃ 이하의 온도로 가열한후, 열간압연시 사상압연의 마무리압연을 800-950℃의 온도범위의 페라이트 상에서 7-20%의 압하율로 압연하고, 650℃ 이하의 온도로 권취하여, 900℃ 이상의 온도로 연소소둔한 다음, 산세하고 1회냉간압연 또는 중간소둔을 포함한 2회냉간압연후 고온소둔하는 것을 특징으로 하는 철손이 낮은 무방향성 전기강판의 제조방법.In the method for producing a non-oriented electrical steel sheet, in weight%, C: 0.01% or less, Si: 2.0-3.5%, Mn: 1.0-1.5%, P: 0.01-0.15% S: 0.008% or less, Al: 1.0% Or less: N: 0.007% or less, Sn: 0.03-0.3%, Ni: 0.05-0.7%, Cu: 0.03-0.5%, remainder: The slab of the steel composed of Fe and other unavoidable impurities is a temperature of 1250 ° C or less. After heating in hot rolling, finishing rolling of finishing rolling during hot rolling is rolled at a reduction ratio of 7-20% on ferrite in the temperature range of 800-950 ° C, wound up to a temperature of 650 ° C or lower, and burned at a temperature of 900 ° C or higher. After annealing, pickling and hot-rolled after two cold rolling including one cold rolling or intermediate annealing, the method for producing a non-oriented electrical steel sheet having low iron loss.
KR1019950051398A 1995-12-18 1995-12-18 The manufacturing method for non-oriented electric steel sheet with excellent hysterisys loss KR100240993B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100544417B1 (en) * 1998-12-16 2006-04-06 주식회사 포스코 Method for manufacturing non-oriented electrical steel sheet with excellent magnetic properties
KR100544416B1 (en) * 1997-11-04 2006-05-03 주식회사 포스코 Non-oriented electrical steel sheet with high magnetic flux density and low iron loss and its manufacturing method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CR20170156A (en) * 2014-10-20 2017-09-22 Arcelormittal METHOD OF PRODUCTION OF LEAF CONTAINING A SILICON STEEL SHEET OF NON-ORIENTED GRAIN, STEEL SHEET OBTAINED AND USE OF THIS.
JP6575269B2 (en) * 2015-09-28 2019-09-18 日本製鉄株式会社 Non-oriented electrical steel sheet and manufacturing method thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR930011407B1 (en) * 1991-10-22 1993-12-06 포항종합제철 주식회사 Method and product of manufacturing silicon steel sheet having improved magnetic flux density

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100544416B1 (en) * 1997-11-04 2006-05-03 주식회사 포스코 Non-oriented electrical steel sheet with high magnetic flux density and low iron loss and its manufacturing method
KR100544417B1 (en) * 1998-12-16 2006-04-06 주식회사 포스코 Method for manufacturing non-oriented electrical steel sheet with excellent magnetic properties

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