KR910012297A - Manufacturing method of high strength steel for tensile strength 100kgf / mm2 welded structure - Google Patents

Manufacturing method of high strength steel for tensile strength 100kgf / mm2 welded structure Download PDF

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Publication number
KR910012297A
KR910012297A KR1019890020408A KR890020408A KR910012297A KR 910012297 A KR910012297 A KR 910012297A KR 1019890020408 A KR1019890020408 A KR 1019890020408A KR 890020408 A KR890020408 A KR 890020408A KR 910012297 A KR910012297 A KR 910012297A
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KR
South Korea
Prior art keywords
welded structure
100kgf
manufacturing
tensile strength
less
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Application number
KR1019890020408A
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Korean (ko)
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KR920005617B1 (en
Inventor
이창선
주웅용
Original Assignee
정명식
포항종합제철 주식회사
박태준
재단법인 산업과학기술연구소
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Priority to KR1019890020408A priority Critical patent/KR920005617B1/en
Publication of KR910012297A publication Critical patent/KR910012297A/en
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Publication of KR920005617B1 publication Critical patent/KR920005617B1/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

내용 없음No content

Description

인장강도 100kgf/㎟급 용접구조용 고장력강의 제조방법Manufacturing method of high strength steel for tensile strength 100kgf / mm2 welded structure

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

제1도는 마무리 압연 온도에 따른 기계적 성질의 변화를 나타내는 그래프.1 is a graph showing the change in mechanical properties with the finish rolling temperature.

Claims (1)

중량%로 C : 0.07-0.15%, Si : 0.1-0.3%, Mn : 0.6-1.0%, Ni : 0.7-1.5%, Cr : 0.4-0.6%, Mo : 0.4-0.6%, V : 0.05%, 이하, Nb : 0.02-0.1%, Ti : 0.01-0.04%, P : 0.02%이하, S : 0.01%이하, B : 0.001-0.002%, Sol, Al : 0.01-0.08%, 와 Cu : 1%이하 및 기타 불가피한 불순물로 조성되는 강슬라브를 1100-1250℃로 가열하여 재결정온도 이하에서의 누적압하율을 40%이상으로 하고 마무리 압연온도를 Ar3이상으로 하여 제어압연압 다음 곧바로 수냉하여 580-680℃에서 템퍼링하는 것을 특징으로 하는 인장강도 100kgf/㎟급 용접구조용 고장력강의 제조방법.By weight% C: 0.07-0.15%, Si: 0.1-0.3%, Mn: 0.6-1.0%, Ni: 0.7-1.5%, Cr: 0.4-0.6%, Mo: 0.4-0.6%, V: 0.05%, Nb: 0.02-0.1%, Ti: 0.01-0.04%, P: 0.02% or less, S: 0.01% or less, B: 0.001-0.002%, Sol, Al: 0.01-0.08%, and Cu: 1% or less And steel slabs composed of other unavoidable impurities, heated to 1100-1250 ° C. to a cumulative reduction ratio of 40% or more under recrystallization temperature, and to a finish rolling temperature of Ar 3 or more, followed by water cooling immediately after controlled rolling pressure. A method of manufacturing high tensile steel for tensile strength 100kgf / mm2 welded structure, characterized in that tempering at ℃. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019890020408A 1989-12-30 1989-12-30 Making process for high tensile steel KR920005617B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019890020408A KR920005617B1 (en) 1989-12-30 1989-12-30 Making process for high tensile steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019890020408A KR920005617B1 (en) 1989-12-30 1989-12-30 Making process for high tensile steel

Publications (2)

Publication Number Publication Date
KR910012297A true KR910012297A (en) 1991-08-07
KR920005617B1 KR920005617B1 (en) 1992-07-10

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ID=19294436

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890020408A KR920005617B1 (en) 1989-12-30 1989-12-30 Making process for high tensile steel

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100256330B1 (en) * 1995-12-26 2000-05-15 이구택 The manufacturing method for tensile strength 120kgf/mm2 high strength steel
KR100276312B1 (en) * 1996-12-13 2000-12-15 이구택 The manufacturing method of 80kg grade direct quenching type high strength steel sheet with excellent toughness
KR100419648B1 (en) * 1999-10-12 2004-02-25 주식회사 포스코 A method for manufacturing ultra high tensile strenth steel

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003225398A1 (en) * 2003-04-16 2004-11-04 Tubos De Acero De Mexico, S.A. Method for the production of a collar for installing an underwater pipeline and the product thus obtained
KR101149132B1 (en) * 2009-04-27 2012-05-25 현대제철 주식회사 Steel with superior impact characteristic at law temperature and the method of producing the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100256330B1 (en) * 1995-12-26 2000-05-15 이구택 The manufacturing method for tensile strength 120kgf/mm2 high strength steel
KR100276312B1 (en) * 1996-12-13 2000-12-15 이구택 The manufacturing method of 80kg grade direct quenching type high strength steel sheet with excellent toughness
KR100419648B1 (en) * 1999-10-12 2004-02-25 주식회사 포스코 A method for manufacturing ultra high tensile strenth steel

Also Published As

Publication number Publication date
KR920005617B1 (en) 1992-07-10

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