KR950026994A - Direct rolled cold rolled steel sheet with excellent formability and manufacturing method - Google Patents

Direct rolled cold rolled steel sheet with excellent formability and manufacturing method Download PDF

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Publication number
KR950026994A
KR950026994A KR1019940006072A KR19940006072A KR950026994A KR 950026994 A KR950026994 A KR 950026994A KR 1019940006072 A KR1019940006072 A KR 1019940006072A KR 19940006072 A KR19940006072 A KR 19940006072A KR 950026994 A KR950026994 A KR 950026994A
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KR
South Korea
Prior art keywords
steel sheet
cold rolled
less
rolled steel
direct
Prior art date
Application number
KR1019940006072A
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Korean (ko)
Other versions
KR960014505B1 (en
Inventor
윤정봉
김성주
김종화
Original Assignee
김만제
포항종합제철주식회사
백덕현
재단법인산업과학기술연구소
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Application filed by 김만제, 포항종합제철주식회사, 백덕현, 재단법인산업과학기술연구소 filed Critical 김만제
Priority to KR1019940006072A priority Critical patent/KR960014505B1/en
Publication of KR950026994A publication Critical patent/KR950026994A/en
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Publication of KR960014505B1 publication Critical patent/KR960014505B1/en

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Classifications

    • 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
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • 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
    • 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
    • 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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium

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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)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

본 발명은 통상 강판과의 밀착성 향상과 기포 결함의 발생을 억제하기 위해 처리하는 하유법랑처리를 생략하고, 극저탄소강을 직접 법랑처리하여도 법랑 특성 및 성형성이 우수한 직접법랑용 냉연강판 및 그 제조방법을 제공하고자하는데, 그 목적이 있다. 본 발명은 직접 법라용 냉연강판에 있어서, 중량%로, C:0.005% 이하, Mn:0.2-0.5%, P:0.015%이하, S:0.015% 이하, B:0.005-0.015%, Nb:0.004-0.005%, N:0.007-0.02%, 잔부 Fe 및 기타 불가피하게 합유되는 원소로 조성되고, 상기 C와 Nb이 0.13x(%Nb)/(%C)=0.5-1.5의 조성범위를 만족하는 것을 특징으로 하는 성형성이 우수한 직접 법랑용 냉연강판 및 이 냉연강판의 제조방법에 관한 것을 그 요지로 한다.In the present invention, a cold rolled steel sheet for direct enamel having an enamel property and formability is excellent even if the enameling treatment of ultra low carbon steel is directly omitted, while eliminating the enameled enameling treatment to improve adhesion to the steel sheet and suppress the occurrence of bubble defects. To provide a manufacturing method, the purpose is. The present invention is directly in the cold rolled steel sheet for the method, in weight%, C: 0.005% or less, Mn: 0.2-0.5%, P: 0.015% or less, S: 0.015% or less, B: 0.005-0.015%, Nb: 0.004 -0.005%, N: 0.007-0.02%, the balance Fe and other unavoidable elements, and C and Nb satisfy the composition range of 0.13x (% Nb) / (% C) = 0.5-1.5 The present invention is directed to a cold rolled steel sheet for direct enamel having excellent moldability and a method for producing the cold rolled steel sheet.

Description

성형성이 우수한 직접 법랑용 냉연강판 및 그 제조방법Direct rolled cold rolled steel sheet with excellent formability and manufacturing method

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

Claims (2)

직접 법랑용 냉연강판에 있어서, 중량%로, C:0.005% 이하, Mn:0.2-0.5%, P:0.015%이하, S:0.015% 이하, B:0.005-0.015%, Nb:0.004-0.05%, N:0.007-0.02%, 잔부 Fe 및 기타 불가피하게 합유되는 원소로 조성되고, 상기 C와 Nb이 0.13x(%Nb)/(%C)=0.5-1.5의 조건범위를 만족하는 것을 특징으로 하는 성형성이 우수한 직접 법랑용 냉연강판.Cold rolled steel sheet for direct enamel, in weight%, C: 0.005% or less, Mn: 0.2-0.5%, P: 0.015% or less, S: 0.015% or less, B: 0.005-0.015%, Nb: 0.004-0.05% , N: 0.007-0.02%, balance Fe and other unavoidable elements, and C and Nb satisfy the condition range of 0.13x (% Nb) / (% C) = 0.5-1.5. Direct rolled cold rolled steel sheet with excellent moldability. 직접 법랑용 냉연강판의 제조방법에 있어서, 중량%, C:0.005% 이하, Mn:0.2-0.5%, P:0.015%이하, S:0.015% 이하, B:0.005-0.015%, Nb:0.004-0.05%, N:0.007-0.02%, 잔부 Fe 및 기타 불가피하게 합유되는 원소로 조성되고, 상기 C와 Nb이 0.13x(%Nb)/(%C)=0.5-1.5의 조건범위를 만족한 극저탄소강을 통상의 방법으로 열간압연하고, 650℃ 이상의 온도에서 열연권취한 다음, 50-80%의 압하율로 냉간압연한 후, 재결정 이상의 온도에서 연속소둔하는 것을 특징으로 하는 성형성이 우수한 직접 법랑용 냉연강판의 제조방법.In the manufacturing method of the direct enameled cold rolled steel sheet, the weight%, C: 0.005% or less, Mn: 0.2-0.5%, P: 0.015% or less, S: 0.015% or less, B: 0.005-0.015%, Nb: 0.004- Pole composed of 0.05%, N: 0.007-0.02%, balance Fe and other unavoidable elements, and C and Nb satisfying the condition range of 0.13x (% Nb) / (% C) = 0.5-1.5 The low carbon steel is hot rolled by a conventional method, hot rolled at a temperature of 650 ° C. or higher, cold rolled at a reduction ratio of 50-80%, and then continuously annealed at a temperature of recrystallization or higher. Method for manufacturing cold rolled steel sheet for enamel. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940006072A 1994-03-25 1994-03-25 Making method of cold rolling steel sheet with enamel and the same product KR960014505B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940006072A KR960014505B1 (en) 1994-03-25 1994-03-25 Making method of cold rolling steel sheet with enamel and the same product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940006072A KR960014505B1 (en) 1994-03-25 1994-03-25 Making method of cold rolling steel sheet with enamel and the same product

Publications (2)

Publication Number Publication Date
KR950026994A true KR950026994A (en) 1995-10-16
KR960014505B1 KR960014505B1 (en) 1996-10-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100468447B1 (en) * 2000-12-20 2005-01-29 주식회사 포스코 A method for manufacturing porcelain enamel steel sheet for non-hairline crack
KR100470056B1 (en) * 2000-11-25 2005-02-04 주식회사 포스코 A cold rolled steel sheet for direct-on enamel applications with excellent adherence

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040048027A (en) * 2002-12-02 2004-06-07 주식회사 포스코 A method for manufacturing enameling steel plate with excellent formability
KR101142500B1 (en) * 2008-12-18 2012-05-07 주식회사 포스코 Enameling steel sheet with bubble defect free and manufacturing method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100470056B1 (en) * 2000-11-25 2005-02-04 주식회사 포스코 A cold rolled steel sheet for direct-on enamel applications with excellent adherence
KR100468447B1 (en) * 2000-12-20 2005-01-29 주식회사 포스코 A method for manufacturing porcelain enamel steel sheet for non-hairline crack

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Publication number Publication date
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