KR930021801A - Manufacturing Method of High Strength Building for Resistance Complex Construction - Google Patents

Manufacturing Method of High Strength Building for Resistance Complex Construction Download PDF

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Publication number
KR930021801A
KR930021801A KR1019920006285A KR920006285A KR930021801A KR 930021801 A KR930021801 A KR 930021801A KR 1019920006285 A KR1019920006285 A KR 1019920006285A KR 920006285 A KR920006285 A KR 920006285A KR 930021801 A KR930021801 A KR 930021801A
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KR
South Korea
Prior art keywords
less
steel
manufacturing
resistance
high tensile
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KR1019920006285A
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Korean (ko)
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KR940008057B1 (en
Inventor
김결실
Original Assignee
정명식
포항종합제절 주식회사
백덕현
재단법인산업과학기술연구소
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Priority to KR1019920006285A priority Critical patent/KR940008057B1/en
Publication of KR930021801A publication Critical patent/KR930021801A/en
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Publication of KR940008057B1 publication Critical patent/KR940008057B1/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

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

Abstract

본 발명은 건축용 구조물등에 사용되는 저항복비를 갖는 고장력강의 제조방법에 관한 것으로서, 강의성분, 열간압연 및 가속냉각조건을 적절히 제어하므로서 열처리를 행하지 않고서도 저항복비를 갖는 건축용 60Rg/mm2급 고장력강을 제조할 수 있는 향상된 방법을 제공하고자 하는데, 그 목적있다. 본 발명은, 고장력강을 제조하는 방법에 있어서, 중량%로, C:0.12-0.15%, Si:0.5%이하, Mn:1.2-1.5%,P : 0.02% 이하, S : 0.01%이하,Nb:0.01-0.03%, 잔부 Fe 및 기타불가피하게 함유되는 불순물로 조성되는 저합금강을 1150-1250℃로 재가열하고, Ar3온도이하 Ar1온도 이상의 마무리압연온도 조건으로 열간압연 한후, 500-550℃의 수냉정지 온도까지 가속냉각처리하여 저항복비 건축용 고장력강을 제조하는 방법을 그 요지로 한다.The present invention relates to a method for manufacturing high tensile strength steel having a resistance ratio used in building structures, etc., which is suitable for controlling the composition of steel, hot rolling, and accelerated cooling conditions, thereby achieving 60 Rg / mm 2 high tensile strength steel for construction without resistance to heat treatment. It is an object of the present invention to provide an improved method for manufacturing. In the method for producing high tensile steel, the present invention provides a weight% of C: 0.12-0.15%, Si: 0.5% or less, Mn: 1.2-1.5%, P: 0.02% or less, S: 0.01% or less, Nb: Low-alloy steel composed of 0.01-0.03%, balance Fe and other unavoidable impurities is reheated to 1150-1250 ° C, hot rolled to a finish rolling temperature of less than Ar 3 or higher and Ar 1 or higher, and then to 500-550 ° C. Its main purpose is to produce a high-strength steel for resistance-welding construction by accelerating cooling to the water cooling stop temperature.

Description

저항복비 건축용 고장력강의 제조방법Manufacturing method of high strength steel

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

제2도는 본 발명에 따라 고장력강을 제조함에 있어 조직제어공정을 개략적으로 나타내는 조직제어공정도.2 is a tissue control process diagram schematically showing a tissue control process in manufacturing high tensile steel according to the present invention.

제3도는 본 발명에 따라 Ar3온도이하 Ar1온도 이상의 마무리 압연온도 조건으로 열간압연 한 열간압연 강판의 미세조직 사진.3 is a microstructure photograph of a hot rolled steel sheet hot rolled under the conditions of the finish rolling temperature of Ar 3 temperature or less and Ar 1 temperature or more according to the present invention.

제4도는 본 발명에 따라 제조된 발명재와 본 발명의 범위를 벗어난 조건으로 제조된 비교재에 대한 미세조직사진.4 is a microstructure photograph of the inventive material prepared according to the present invention and the comparative material prepared under conditions outside the scope of the present invention.

Claims (2)

고장력강을 제조하는 방법에 있어서, 중량%로, C : 0.12-0.15%, Si : 0.5%이하, Mn : 1.2-1.5%,P : 0.02% 이하, S : 0.01%이하, Nb : 0.01-0.03%, 잔부 Fe 및 기타불가피하게 함유되는 불순물로 조성되는 저합금강을 1150-1250℃을 재가열하고, Ar3온도이하 Ar1온도 이상의 마무리압연온도 조건으로 열간압연 한후, 500-550℃의 수냉정지 온도까지 가속냉각처리하여 저항복비 건축용 고장력강을 제조방법.In the method of manufacturing high tensile steel, in weight%, C: 0.12-0.15%, Si: 0.5% or less, Mn: 1.2-1.5%, P: 0.02% or less, S: 0.01% or less, Nb: 0.01-0.03% Re-heat the low alloy steel, which is composed of the balance Fe and other inevitable impurities, 1150-1250 ℃, hot-rolled under Ar 3 temperature or less, at the finish rolling temperature of Ar 1 or higher, and then to the water cooling stop temperature of 500-550 ℃. Method of manufacturing high strength steel for resistive-building construction by accelerated cooling treatment. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920006285A 1992-04-15 1992-04-15 Making method of high tension steel KR940008057B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920006285A KR940008057B1 (en) 1992-04-15 1992-04-15 Making method of high tension steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920006285A KR940008057B1 (en) 1992-04-15 1992-04-15 Making method of high tension steel

Publications (2)

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KR930021801A true KR930021801A (en) 1993-11-23
KR940008057B1 KR940008057B1 (en) 1994-09-01

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KR1019920006285A KR940008057B1 (en) 1992-04-15 1992-04-15 Making method of high tension steel

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100276300B1 (en) * 1996-11-26 2000-12-15 이구택 The manufacturing method of high strength hot rolling steel sheet with having low tensil strength
KR100419647B1 (en) * 1999-10-12 2004-02-25 주식회사 포스코 A METHOD FOR MANUFACTURING 50kgf/㎟ GRADE BUILDING STEEL PLATE WITH HIGH TEMPERATURE STRENGTH

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100276300B1 (en) * 1996-11-26 2000-12-15 이구택 The manufacturing method of high strength hot rolling steel sheet with having low tensil strength
KR100419647B1 (en) * 1999-10-12 2004-02-25 주식회사 포스코 A METHOD FOR MANUFACTURING 50kgf/㎟ GRADE BUILDING STEEL PLATE WITH HIGH TEMPERATURE STRENGTH

Also Published As

Publication number Publication date
KR940008057B1 (en) 1994-09-01

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