KR950014345A - 소화경화성과 성형성이 우수한 냉간압연강판 제조방법 - Google Patents

소화경화성과 성형성이 우수한 냉간압연강판 제조방법 Download PDF

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Publication number
KR950014345A
KR950014345A KR1019930023953A KR930023953A KR950014345A KR 950014345 A KR950014345 A KR 950014345A KR 1019930023953 A KR1019930023953 A KR 1019930023953A KR 930023953 A KR930023953 A KR 930023953A KR 950014345 A KR950014345 A KR 950014345A
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South Korea
Prior art keywords
ultra low
temperature
steel sheet
rolled steel
cold rolled
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KR1019930023953A
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English (en)
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KR960005238B1 (ko
Inventor
정우창
한성호
김일영
이성호
Original Assignee
조말수
포항종합제철 주식회사
백덕현
재단법인산업과학기술연구소
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Priority to KR1019930023953A priority Critical patent/KR960005238B1/ko
Publication of KR950014345A publication Critical patent/KR950014345A/ko
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Publication of KR960005238B1 publication Critical patent/KR960005238B1/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
    • C21D8/0263—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
    • 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
    • C21D8/0221—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
    • 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
    • C21D8/0221—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
    • 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
    • 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%
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

본 발명에 의하면 소부경화성과 성형성이 우수한 고장력 냉연강판 제조방법이 제공되며, 이 방법은 중량%로 C:0.002-0.004%, Mn:0.1-0.4%, P:0.05-0.10%, S:0.004-0.009%, 가용 Al:0.02-0.06%, N:0.0015-0.0025%, Ti:0.005-0.026%를 포함하여 상기 Ti의 범위가 (48/14)(48/14)N+(48/32)S+0.004%의 식을 만족하는, 극저질소, 극저황 및 극저탄소의 알킬드(Al-Killed)강 슬라브를 1200℃ 이상에서 균질화처리하여 900-920℃의 마무리 압연온도로 열간압연하고, 700-730℃의 온도에서 권취한 다음, 60-80% 압화율로 냉간압연, 800-850℃의 온도에서 연속소둔, 0.5-1.5%의 조질압연을 행함을 포함한다.
상기 방법으로부터 소부경화양 3-5kg f/mm2, r1,5, 인장강도 35-40kg f/mm2급 고장력 냉연강판을 제조할 수 있다.

Description

소화경화성과 성형성이 우수한 냉간압연강판 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (1)

  1. 중량%로 C:0.002-0.004%, Mn:0.1-0.4%, P:0.05-0.10%, S:0.004-0.009%, 가용(Soluble) Al:0.02-0.06%, N:0.0015-0.0025%, Ti:0.005-0.026%이면서 또한 Ti양의 범위가 (48/14)(48/14)N+(48/32)S+0.004%의 식을 만족하도록 Ti를 첨가한 극저질소, 극저황 및 극저탄소의 Al-Killed강 슬라브를 1200℃ 이상에서 균질화처리하여 900-920℃의 마무리 압연온도로 열간압연하고, 700-730℃의 온도에서 권취한 다음, 60-80% 압화율로 냉가압연, 800-850℃의 온도에서 연속소둔, 0.5-1.5%의 조질압연을 실시하는 것을 특징으로 하는 소부경화양 3-5kg f/mm2, r1,5, 인장강도 35-40kg f/mm2급 고장력 냉연강판의 제조방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019930023953A 1993-11-11 1993-11-11 소부경화성과 성형성이 우수한 냉간압연강판 제조방법 KR960005238B1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930023953A KR960005238B1 (ko) 1993-11-11 1993-11-11 소부경화성과 성형성이 우수한 냉간압연강판 제조방법

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930023953A KR960005238B1 (ko) 1993-11-11 1993-11-11 소부경화성과 성형성이 우수한 냉간압연강판 제조방법

Publications (2)

Publication Number Publication Date
KR950014345A true KR950014345A (ko) 1995-06-15
KR960005238B1 KR960005238B1 (ko) 1996-04-23

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KR1019930023953A KR960005238B1 (ko) 1993-11-11 1993-11-11 소부경화성과 성형성이 우수한 냉간압연강판 제조방법

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100244659B1 (ko) * 1995-12-29 2000-03-02 이구택 기포발생이 없는 고가공용 법랑용 냉연강판의 제조방법
KR100433248B1 (ko) * 1999-12-28 2004-05-27 주식회사 포스코 가공성 및 내벤트성이 우수한 고가공용 고강도 냉연강판및 그 제조방법
KR100946064B1 (ko) * 2002-12-18 2010-03-10 주식회사 포스코 상온 내시효성이 우수한 고강도 소부경화형 냉연강판의제조방법

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100403962B1 (ko) * 1998-12-29 2004-06-04 주식회사 포스코 초고성형,고강도소부경화형냉연강판및그제조방법

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100244659B1 (ko) * 1995-12-29 2000-03-02 이구택 기포발생이 없는 고가공용 법랑용 냉연강판의 제조방법
KR100433248B1 (ko) * 1999-12-28 2004-05-27 주식회사 포스코 가공성 및 내벤트성이 우수한 고가공용 고강도 냉연강판및 그 제조방법
KR100946064B1 (ko) * 2002-12-18 2010-03-10 주식회사 포스코 상온 내시효성이 우수한 고강도 소부경화형 냉연강판의제조방법

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