JPS56156714A - Rolling method for high-tenacity steel - Google Patents

Rolling method for high-tenacity steel

Info

Publication number
JPS56156714A
JPS56156714A JP5991180A JP5991180A JPS56156714A JP S56156714 A JPS56156714 A JP S56156714A JP 5991180 A JP5991180 A JP 5991180A JP 5991180 A JP5991180 A JP 5991180A JP S56156714 A JPS56156714 A JP S56156714A
Authority
JP
Japan
Prior art keywords
rolling
temperature
thickness
steel slab
composition according
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
JP5991180A
Other languages
Japanese (ja)
Inventor
Motomu Kimura
Noriaki Koshizuka
Yoshiyuki Saito
Teiichi Enami
Shuzo Aoki
Jiro Yano
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.)
JFE Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP5991180A priority Critical patent/JPS56156714A/en
Publication of JPS56156714A publication Critical patent/JPS56156714A/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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working

Landscapes

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

Abstract

PURPOSE:To control rolling behavior correctly by hot rolling a steel slab containing <=0.3wt% and alloy elements adjusted in composition according to the purpose controlling the rolling by calculated average temperature through the thickness by using the thickness of material and career of rolling to become to that thickness as factors. CONSTITUTION:A steel slab containing <=0.3wt% C and alloy elements adjusted in composition according to the purpose is soaked to above 900 deg.C and hot-rolled. At this time, the change of temperature during the rolling process of the steel slab is grasped in the average temperature through the thickness Tm. In calculating temperature by heat transmission based upon rolling data to the steel slab, actual temperature of transformation is estimated by deviation of actually measured temperature from temperature calculated by extrapolation making the values of propperty of material in the austenite domain as data after equilibrium transformation. Then, rolling pattern is so made that the pass holding time from immediately before Tm reaches Ar3' to starting of pass is within 15 seconds, and the total rolling reduction (r) from a temperature higher than Ar3' by 100 deg.C to Ar3 becomes 10% or more.
JP5991180A 1980-05-08 1980-05-08 Rolling method for high-tenacity steel Pending JPS56156714A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5991180A JPS56156714A (en) 1980-05-08 1980-05-08 Rolling method for high-tenacity steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5991180A JPS56156714A (en) 1980-05-08 1980-05-08 Rolling method for high-tenacity steel

Publications (1)

Publication Number Publication Date
JPS56156714A true JPS56156714A (en) 1981-12-03

Family

ID=13126773

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5991180A Pending JPS56156714A (en) 1980-05-08 1980-05-08 Rolling method for high-tenacity steel

Country Status (1)

Country Link
JP (1) JPS56156714A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59200723A (en) * 1983-04-26 1984-11-14 Nippon Steel Corp Manufacture of high tension steel plate with superior toughness

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59200723A (en) * 1983-04-26 1984-11-14 Nippon Steel Corp Manufacture of high tension steel plate with superior toughness
JPS626729B2 (en) * 1983-04-26 1987-02-13 Nippon Steel Corp

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