KR830004428A - Manufacturing method of high strength cold rolled steel sheet with good paintability, weldability, workability and workability - Google Patents

Manufacturing method of high strength cold rolled steel sheet with good paintability, weldability, workability and workability Download PDF

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Publication number
KR830004428A
KR830004428A KR1019800004514A KR800004514A KR830004428A KR 830004428 A KR830004428 A KR 830004428A KR 1019800004514 A KR1019800004514 A KR 1019800004514A KR 800004514 A KR800004514 A KR 800004514A KR 830004428 A KR830004428 A KR 830004428A
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South Korea
Prior art keywords
workability
high strength
rolled steel
sec
cooling
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KR1019800004514A
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Korean (ko)
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KR850000875B1 (en
Inventor
오사무 아끼스에
데루아끼 야마다
Original Assignee
사이도오 에이시로오
신닛본 세이데쓰 가부시기 가이샤
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Application filed by 사이도오 에이시로오, 신닛본 세이데쓰 가부시기 가이샤 filed Critical 사이도오 에이시로오
Priority to KR1019800004514A priority Critical patent/KR850000875B1/en
Publication of KR830004428A publication Critical patent/KR830004428A/en
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Publication of KR850000875B1 publication Critical patent/KR850000875B1/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
    • C21D8/02—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
    • 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
    • C22C38/02—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

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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

내용 없음No content

Description

도장성, 용접성, 가공성 및 그 가공성이 양호한 고강도냉연강판의 제조방법Manufacturing method of high strength cold rolled steel sheet with good paintability, weldability, workability and workability

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

Claims (4)

C 0.05∼0.12%, Si≤1.2%, Mn 0.7∼1.5%, P 0.04∼0.15%, Sol Al 0.01∼0.10%, 그밖에 Fe 및 불가피적인 불순물을 함유하는 강을 상법(常法)에 따라서, 열연, 냉연후 연속소둔을 행함에 있어서, 730℃∼850℃로서 20초∼2분간 균열후, 기체 및 물에 의한 냉각에 의하여 30℃∼300℃/초의 냉각속도로서 급냉하는 것을 특징으로 하는 도장성, 용접성, 가공성 및 그 가공성이 양호한 고강도냉연강판의 제조방법.C 0.05 to 0.12%, Si ≤ 1.2%, Mn 0.7 to 1.5%, P 0.04 to 0.15%, Sol Al 0.01 to 0.10%, and other steels containing Fe and unavoidable impurities according to the conventional method. In the continuous annealing after cold rolling, after being cracked at 730 ° C. to 850 ° C. for 20 seconds to 2 minutes, the coating is quenched at a cooling rate of 30 ° C. to 300 ° C./sec by cooling with gas and water. Process for producing high strength cold rolled steel with good weldability, workability and workability. C 0.05∼0.12%, Si≤1.2%, Mn 0.7∼1.5%, P 0.04∼0.15%, Sol Al 0.01∼0.10%, 그밖에 Fe 및 불가피적인 불순물을 함유하는 강을 상법에 따라서, 열연, 냉연후 연속소둔을 행함에 있어서, 730℃∼850℃로서 20초∼2분간 균열후, 기체 및 물의 냉각에 의하여, 30℃∼300℃/초의 냉각속도로서 500∼300℃의 온도범위까지 급냉하고, 그후 300∼500℃의 온도로서 과시효(過時) 처리를 행하는 것을 특징으로 하는 도장성, 용접성, 가공성 및 그 가공성이 양호한 고강도냉연강판의 제조방법.C 0.05 to 0.12%, Si ≤ 1.2%, Mn 0.7 to 1.5%, P 0.04 to 0.15%, Sol Al 0.01 to 0.10%, and other steels containing Fe and unavoidable impurities, according to the conventional method, hot and cold continuous In the annealing, after cracking for 20 seconds to 2 minutes at 730 ° C. to 850 ° C., by quenching the gas and water, it is quenched to a temperature range of 500 ° C. to 300 ° C. at a cooling rate of 30 ° C. to 300 ° C./sec. Overaging at a temperature of ～ 500 ℃ A process for producing a high strength cold rolled steel sheet having good coating property, weldability, workability and workability, characterized in that the treatment is carried out. C 0.05∼0.12%, Si≤1.2%, Mn 0.7∼1.5%, P 0.04∼0.15%, Sol Al 0.01∼0.10%, 그밖에 Fe 및 불가피적인 불순물을 함유하는 강을 상법에 따라서 열연, 냉연후 연속소둔을 행함에 있어서, 730℃∼850℃로서 20초∼2분간 균열후, 720∼650℃의 사이의 급냉개시 온도까지를 20℃/초 이하의 냉각속도로서 서서히 냉각함과 함께 상기한 급냉개시온도에서, 기체 및 물로서 냉각함으로서 30℃∼300℃/초의 냉각속도로서 급냉하는 것을 특징으로 하는 도장성, 용접성, 가공성 및 그 가공성이 양호한 고강도냉연강판의 제조방법.C 0.05 to 0.12%, Si≤1.2%, Mn 0.7 to 1.5%, P 0.04 to 0.15%, Sol Al 0.01 to 0.10%, and other steels containing Fe and unavoidable impurities. In this step, after the crack for 20 seconds to 2 minutes at 730 ° C. to 850 ° C., the cooling start temperature between 720 ° and 650 ° C. is gradually cooled at a cooling rate of 20 ° C./sec or less, and the above rapid cooling start temperature is The method of manufacturing a high strength cold rolled steel sheet having good paintability, weldability, processability and workability, characterized by quenching at a cooling rate of 30 ° C to 300 ° C / sec by cooling with gas and water. C 0.05∼0.12%, Si≤1.2%, Mn 0.7∼1.5%, P 0.04∼0.15%, SolAl 0.01∼0.10%, 그밖에 Fe 및 불가피적인 불순물을 함유하는 강을 상법에 따라서, 열연, 냉연후 연속소둔을 행함에 있어서, 730℃∼850℃로서 20초∼2분간 균열후 720∼650℃의 사이의 급냉개시온도까지를 20℃/초 이하의 냉각속도로서 서서히 냉각함과 함께 상기한 급냉개시온도에서 기체 및 물의 냉각에 의하여 30℃∼300℃/초의 냉각속도로서 500∼300℃의 온도 범위까지 급냉하고, 그후 300℃∼500℃의 온도로서 과시효처리를 행하는 것을 특징으로 하는 도장성, 용접성, 가공성 및 그 가공성이 양호한 고강도 냉연강판의 제조방법.C 0.05 to 0.12%, Si ≤ 1.2%, Mn 0.7 to 1.5%, P 0.04 to 0.15%, SolAl 0.01 to 0.10%, and other steels containing Fe and unavoidable impurities according to the conventional method. In the step of 730 ° C. to 850 ° C., after 20 seconds to 2 minutes of cracking, the quench start temperature between 720 and 650 ° C. is gradually cooled at a cooling rate of 20 ° C./sec or less, and at the above quench start temperature. By cooling the gas and water, it is quenched to a temperature range of 500 to 300 ° C. at a cooling rate of 30 ° C. to 300 ° C./sec, and thereafter, an overaging treatment is performed at a temperature of 300 ° C. to 500 ° C. Process for producing high strength cold rolled steel sheet having good workability and workability. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019800004514A 1980-11-26 1980-11-26 Method of process high strength cold steel sheet KR850000875B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019800004514A KR850000875B1 (en) 1980-11-26 1980-11-26 Method of process high strength cold steel sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019800004514A KR850000875B1 (en) 1980-11-26 1980-11-26 Method of process high strength cold steel sheet

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KR830004428A true KR830004428A (en) 1983-07-13
KR850000875B1 KR850000875B1 (en) 1985-06-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100554760B1 (en) * 2003-12-20 2006-02-24 주식회사 포스코 High formable and high strength cold rolled steel sheets with excellent weldability and paintability, and method for manufacturing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100554760B1 (en) * 2003-12-20 2006-02-24 주식회사 포스코 High formable and high strength cold rolled steel sheets with excellent weldability and paintability, and method for manufacturing the same

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Publication number Publication date
KR850000875B1 (en) 1985-06-22

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