JPS5655525A - Production of high yield ratio type nonskin-pass hot-rolled high tensile steel plate - Google Patents

Production of high yield ratio type nonskin-pass hot-rolled high tensile steel plate

Info

Publication number
JPS5655525A
JPS5655525A JP13062879A JP13062879A JPS5655525A JP S5655525 A JPS5655525 A JP S5655525A JP 13062879 A JP13062879 A JP 13062879A JP 13062879 A JP13062879 A JP 13062879A JP S5655525 A JPS5655525 A JP S5655525A
Authority
JP
Japan
Prior art keywords
hot
rolled
steel plate
nonskin
steel
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.)
Granted
Application number
JP13062879A
Other languages
Japanese (ja)
Other versions
JPS60418B2 (en
Inventor
Jiro Jizaimaru
Yasuo Takahashi
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP13062879A priority Critical patent/JPS60418B2/en
Publication of JPS5655525A publication Critical patent/JPS5655525A/en
Publication of JPS60418B2 publication Critical patent/JPS60418B2/en
Expired 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
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing

Landscapes

  • 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)
  • Heat Treatment Of Sheet Steel (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

PURPOSE:To produce a titled steel plate of superior cold workability, low temperature toughness and weldability by hot-rolling the low C-high Mn/Si/Ti base steel having decreased C content, is added with Cr to have a controlled Ti amount, under specific hot rolling conditions. CONSTITUTION:The steel of the composition contg. 0.02-0.08% C, 0.1-1.0% Si, 1.5-2.0% Mn, 0.2-0.6% Cr, 0.1-02% Ti, <=0.05% acid soluble Al, <=0.01% S, and <=0.01% N, further, contg., if necessary, 0.005-0.01% one of Ca or rare earth elements or total of two kinds, and comprising Fe and impurities for the remainder, is used. The steel is heated to >=1,200 deg.C, is hot-rolled at finishing temperatures above 880 deg.C, and is hot rolled at 450-600 deg.C. At this time, the mean cooling rates from the hot-rolling finishing temperature up to the coiling temperature are regulated to >=8 deg.C/sec.
JP13062879A 1979-10-08 1979-10-08 Manufacturing method for high yield ratio non-tempered hot-rolled high-strength steel sheets Expired JPS60418B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13062879A JPS60418B2 (en) 1979-10-08 1979-10-08 Manufacturing method for high yield ratio non-tempered hot-rolled high-strength steel sheets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13062879A JPS60418B2 (en) 1979-10-08 1979-10-08 Manufacturing method for high yield ratio non-tempered hot-rolled high-strength steel sheets

Publications (2)

Publication Number Publication Date
JPS5655525A true JPS5655525A (en) 1981-05-16
JPS60418B2 JPS60418B2 (en) 1985-01-08

Family

ID=15038781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13062879A Expired JPS60418B2 (en) 1979-10-08 1979-10-08 Manufacturing method for high yield ratio non-tempered hot-rolled high-strength steel sheets

Country Status (1)

Country Link
JP (1) JPS60418B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58185719A (en) * 1982-04-20 1983-10-29 Kobe Steel Ltd Manufacture of high yield ratio type unnormalized hot-rolled high-tension steel plate
CN104011234A (en) * 2011-12-27 2014-08-27 杰富意钢铁株式会社 Hot-rolled steel sheet and process for manufacturing same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58185719A (en) * 1982-04-20 1983-10-29 Kobe Steel Ltd Manufacture of high yield ratio type unnormalized hot-rolled high-tension steel plate
CN104011234A (en) * 2011-12-27 2014-08-27 杰富意钢铁株式会社 Hot-rolled steel sheet and process for manufacturing same
CN104011234B (en) * 2011-12-27 2015-12-23 杰富意钢铁株式会社 Hot-rolled steel sheet and manufacture method thereof

Also Published As

Publication number Publication date
JPS60418B2 (en) 1985-01-08

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