KR950018578A - Manufacturing method of high strength cold rolled steel sheet for high processing with excellent resistance to low temperature brittleness - Google Patents

Manufacturing method of high strength cold rolled steel sheet for high processing with excellent resistance to low temperature brittleness Download PDF

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Publication number
KR950018578A
KR950018578A KR1019930028642A KR930028642A KR950018578A KR 950018578 A KR950018578 A KR 950018578A KR 1019930028642 A KR1019930028642 A KR 1019930028642A KR 930028642 A KR930028642 A KR 930028642A KR 950018578 A KR950018578 A KR 950018578A
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South Korea
Prior art keywords
steel sheet
rolled steel
cold rolled
less
high processing
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KR1019930028642A
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Korean (ko)
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KR960005236B1 (en
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김성주
윤정봉
Original Assignee
조말수
포항종합제철 주식회사
백덕현
재단법인산업과학기술연구소
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Priority to KR1019930028642A priority Critical patent/KR960005236B1/en
Publication of KR950018578A publication Critical patent/KR950018578A/en
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Publication of KR960005236B1 publication Critical patent/KR960005236B1/en

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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
    • 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)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

본 발명은 고가공용 고강도 냉연강판을 제조하는 방법에 관한 것으로써, 인장강도 높고, 가공성이 우수하고 2차 가공취성에 대한 저항성이 우수한 냉연강판을 제조하고자 하는데, 그 목적이 있다.The present invention relates to a method for manufacturing a high strength cold rolled steel sheet for high processing, and to produce a cold rolled steel sheet having high tensile strength, excellent workability, and excellent resistance to secondary work brittleness.

본 발명은 중량%로, C : 0.005% 이하, N : 0.005% 이하, S : 0.02% 이하, Mn : 0.2%~0.6%, Ti : 0.03%-0.08%, P : 0.04%-0.1%, Mo : 0.01%-0.05% 첨가하되, (Ti-(48/32)S-(48/14)N)/(12/48)C 비를 1이상, Mo/P 원자비를 0.1 이상으로 조절하고 강의 제조시 불가피하게 함유되는 원소를 포함한 알루미늄 킬드강을 통상의 방법으로 열간압연하되 열간마무리 압연온도를 Ar3변태점 이상으로 하여 통상의 온도범위에서 권취한 후 60% 이상의 압하율로 냉간압연하여 재결정온도 이상에서 연속소둔하여 저온취성에 대한 저항성이 우수한 고가공용 냉연강판을 제조하는 방법을 그 요지로 한다.The present invention is in weight%, C: 0.005% or less, N: 0.005% or less, S: 0.02% or less, Mn: 0.2% -0.6%, Ti: 0.03% -0.08%, P: 0.04% -0.1%, Mo : Add 0.01% -0.05%, adjust (Ti- (48/32) S- (48/14) N) / (12/48) C ratio to 1 or more and Mo / P atomic ratio to 0.1 or more In case of manufacture, aluminum-kilted steel containing inevitably contained elements are hot rolled by a conventional method, but hot-rolled rolling temperature is wound at an Ar 3 transformation point or higher and wound in a normal temperature range, and then cold-rolled at a reduction ratio of 60% or more to recrystallization temperature. The present invention is a method for producing a cold rolled steel sheet for high processing having excellent resistance to low temperature embrittlement by continuous annealing.

Description

저온취성에 대한 저항성이 우수한 고가공용 고강도 냉연강판의 제조방법Manufacturing method of high strength cold rolled steel sheet for high processing with excellent resistance to low temperature brittleness

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

Claims (1)

고가공용 고강도 냉연강판을 제조하는 방법에 있어서, 중량%로, C : 0.005% 이하, N : 0.005% 이하, S : 0.02% 이하, Mn : 0.2%~0.6%, Ti : 0.03%-0.08%, P : 0.04%-0.1%, Mo : 0.01%-0.05% 함유하고, [Ti-(48/32)S-(48/14)N]/(12/48)C 비가 1.0이상이고, Mo/P 원자비가 0.1 이상이고, 그리고 잔부 Fe 및 기타 불가피한 불순물로 이루어진 알루미늄 킬드강을 통상의 방법으로 열간압연하되 열간마무리 압연온도를 Ar3변태점 이상으로 하여 통상의 온도에서 권취한 후 60% 이상의 압하율로 냉간압연한 다음, 재결정온도 이상에서 연속소둔하는 것을 특징으로 하는 저온취성에 대한 저항성이 우수한 고가공용 냉연강판을 제조하는 방법.In the method of manufacturing a high strength cold rolled steel sheet for high processing, in weight%, C: 0.005% or less, N: 0.005% or less, S: 0.02% or less, Mn: 0.2% -0.6%, Ti: 0.03% -0.08%, P: 0.04% -0.1%, Mo: 0.01% -0.05%, [Ti- (48/32) S- (48/14) N] / (12/48) C ratio is 1.0 or more, Mo / P The aluminum-kilted steel with an atomic ratio of 0.1 or more and the balance of Fe and other unavoidable impurities is hot rolled in a conventional manner, but wound at a normal temperature with a hot finish rolling temperature of more than Ar 3 transformation point and then reduced to 60% or more. Cold rolling, and then annealing above the recrystallization temperature, the method for producing a cold rolled steel sheet for high processing excellent in resistance to low temperature brittleness. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930028642A 1993-12-20 1993-12-20 Making method of high strength cold rolling steel sheet KR960005236B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930028642A KR960005236B1 (en) 1993-12-20 1993-12-20 Making method of high strength cold rolling steel sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930028642A KR960005236B1 (en) 1993-12-20 1993-12-20 Making method of high strength cold rolling steel sheet

Publications (2)

Publication Number Publication Date
KR950018578A true KR950018578A (en) 1995-07-22
KR960005236B1 KR960005236B1 (en) 1996-04-23

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KR1019930028642A KR960005236B1 (en) 1993-12-20 1993-12-20 Making method of high strength cold rolling steel sheet

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100240986B1 (en) * 1995-12-05 2000-03-02 이구택 The manufacturing method for deep drawing high strength cold rolling steelsheet with excellent workability brittle
KR100241305B1 (en) * 1995-11-30 2000-03-02 이구택 The manufacturing method for cold rolling steel sheet with high workability and high strength
KR100433248B1 (en) * 1999-12-28 2004-05-27 주식회사 포스코 a cold-rolled steel with good formability and anti-dent property and the method of manufacturing the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100241305B1 (en) * 1995-11-30 2000-03-02 이구택 The manufacturing method for cold rolling steel sheet with high workability and high strength
KR100240986B1 (en) * 1995-12-05 2000-03-02 이구택 The manufacturing method for deep drawing high strength cold rolling steelsheet with excellent workability brittle
KR100433248B1 (en) * 1999-12-28 2004-05-27 주식회사 포스코 a cold-rolled steel with good formability and anti-dent property and the method of manufacturing the same

Also Published As

Publication number Publication date
KR960005236B1 (en) 1996-04-23

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