JPS5672127A - Manufacture of low yield ratio complex structure high tension steel having excellent ductility - Google Patents

Manufacture of low yield ratio complex structure high tension steel having excellent ductility

Info

Publication number
JPS5672127A
JPS5672127A JP14927779A JP14927779A JPS5672127A JP S5672127 A JPS5672127 A JP S5672127A JP 14927779 A JP14927779 A JP 14927779A JP 14927779 A JP14927779 A JP 14927779A JP S5672127 A JPS5672127 A JP S5672127A
Authority
JP
Japan
Prior art keywords
steel
heated
manufacture
complex structure
high tension
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP14927779A
Other languages
Japanese (ja)
Inventor
Yoshio Hashimoto
Kunio Watanabe
Toyohiko Sato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP14927779A priority Critical patent/JPS5672127A/en
Publication of JPS5672127A publication Critical patent/JPS5672127A/en
Pending legal-status Critical Current

Links

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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Abstract

PURPOSE:To obtain inexpensively the titled steel plate which is excellent in the strength-ductility balance and of high quality in comparison with conventional ones, by winding a steel consisting of a specified composition such as C, Si at >= 300 deg.C after said steel is heated at a specified temperature and then is heated, rolled and cooled under specified conditions. CONSTITUTION:A steel consisting of 0.05-0.15% C, <=2% Si, 0.5-2% Mn, 0.01-0.1% Al and the residue of Fe and some impurities is rolled in >=90% total draft and more than Ar3 point after it has been heated in 1,000-1,150 deg.C, and then the steel is wound at <=300 deg.C after it has been cooled at 10-100 deg.C/sec. cooling rate. Thus, by means of only cheap alloy elements and reducing of heating temperature, the titled steel plte which is excellent in strength-ductility balance in comparison with conventional ones can be obtained inexpensively. Moreover, when <=0.015% S and Zr (2<=Zr/S<=10) or rear earth element (REM) (1.3<=REM/S<=5) or Ca (0.5<=Ca/S<=1.5) are added to said compositions, the above-mentioned characteristics is improved more.
JP14927779A 1979-11-17 1979-11-17 Manufacture of low yield ratio complex structure high tension steel having excellent ductility Pending JPS5672127A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14927779A JPS5672127A (en) 1979-11-17 1979-11-17 Manufacture of low yield ratio complex structure high tension steel having excellent ductility

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14927779A JPS5672127A (en) 1979-11-17 1979-11-17 Manufacture of low yield ratio complex structure high tension steel having excellent ductility

Publications (1)

Publication Number Publication Date
JPS5672127A true JPS5672127A (en) 1981-06-16

Family

ID=15471688

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14927779A Pending JPS5672127A (en) 1979-11-17 1979-11-17 Manufacture of low yield ratio complex structure high tension steel having excellent ductility

Country Status (1)

Country Link
JP (1) JPS5672127A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58123823A (en) * 1981-12-11 1983-07-23 Nippon Steel Corp Manufacture of high strength hot rolled steel sheet of super fine grain
JPS58174523A (en) * 1982-04-03 1983-10-13 Nippon Steel Corp Manufacture of very fine-grained high-strength hot-worked steel material
JPS61170518A (en) * 1985-01-25 1986-08-01 Kobe Steel Ltd Production of high-strength hot rolled steel sheet having excellent formability
WO2001029272A1 (en) * 1999-10-19 2001-04-26 Aspector Oy Method of producing ultra-fine grain structure for unalloyed or low-alloyed steel

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58123823A (en) * 1981-12-11 1983-07-23 Nippon Steel Corp Manufacture of high strength hot rolled steel sheet of super fine grain
JPS58174523A (en) * 1982-04-03 1983-10-13 Nippon Steel Corp Manufacture of very fine-grained high-strength hot-worked steel material
JPS627247B2 (en) * 1982-04-03 1987-02-16 Nippon Steel Corp
JPS61170518A (en) * 1985-01-25 1986-08-01 Kobe Steel Ltd Production of high-strength hot rolled steel sheet having excellent formability
WO2001029272A1 (en) * 1999-10-19 2001-04-26 Aspector Oy Method of producing ultra-fine grain structure for unalloyed or low-alloyed steel
US6719860B1 (en) 1999-10-19 2004-04-13 Aspector Oy Method of producing ultra-fine grain structure for unalloyed or low-alloyed steel
CN1332043C (en) * 1999-10-19 2007-08-15 阿斯帕克特有限公司 Method of producing ultra-fine grain structure for unalloyed or low-alloyed steel

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