JPS57177927A - Manufacture of high tensile steel plate with superior workability - Google Patents

Manufacture of high tensile steel plate with superior workability

Info

Publication number
JPS57177927A
JPS57177927A JP6363981A JP6363981A JPS57177927A JP S57177927 A JPS57177927 A JP S57177927A JP 6363981 A JP6363981 A JP 6363981A JP 6363981 A JP6363981 A JP 6363981A JP S57177927 A JPS57177927 A JP S57177927A
Authority
JP
Japan
Prior art keywords
temp
transformation point
manufacture
steel plate
high tensile
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
JP6363981A
Other languages
Japanese (ja)
Other versions
JPS6330971B2 (en
Inventor
Arihiko Morita
Norio Tsukiji
Hisao Imatomi
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.)
NITSUSHIN SEIKOU KK
Nippon Steel Nisshin Co Ltd
Original Assignee
NITSUSHIN SEIKOU KK
Nisshin Steel Co 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 NITSUSHIN SEIKOU KK, Nisshin Steel Co Ltd filed Critical NITSUSHIN SEIKOU KK
Priority to JP6363981A priority Critical patent/JPS57177927A/en
Publication of JPS57177927A publication Critical patent/JPS57177927A/en
Publication of JPS6330971B2 publication Critical patent/JPS6330971B2/ja
Granted 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

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)

Abstract

PURPOSE:To manufacture a high tensile steel plate with >=50kg/mm.<2> tensile strength and superior workability by hot rolling a steel contg. specified amounts of C, Si, Mn, Cr and Al by an ordinary method and box-annealing it at a temp. from the A1 transformation point to the A3 transformation point. CONSTITUTION:A steel consisting of, by weight, 0.02-0.15% C, 0.1-1.5% Si, 1.9-3% Mn, 0.2-1.3% Cr, <=0.1% Al and the balance Fe with inevitable impurities is forged and hot rolled by an ordinary method at >=850 deg.C finish temp. and >=500 deg.C coiling temp. The rolled steel is then box-annealed at a temp. from the A1 transformation point to the A3 transformation point to obtain a composite structure contg. ferrite and martensite. It is more effective to add 0.01-0.1% Nb and/or 0.01-0.2% Ti to said composition.
JP6363981A 1981-04-27 1981-04-27 Manufacture of high tensile steel plate with superior workability Granted JPS57177927A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6363981A JPS57177927A (en) 1981-04-27 1981-04-27 Manufacture of high tensile steel plate with superior workability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6363981A JPS57177927A (en) 1981-04-27 1981-04-27 Manufacture of high tensile steel plate with superior workability

Publications (2)

Publication Number Publication Date
JPS57177927A true JPS57177927A (en) 1982-11-01
JPS6330971B2 JPS6330971B2 (en) 1988-06-21

Family

ID=13235121

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6363981A Granted JPS57177927A (en) 1981-04-27 1981-04-27 Manufacture of high tensile steel plate with superior workability

Country Status (1)

Country Link
JP (1) JPS57177927A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005100618A3 (en) * 2004-03-18 2006-01-12 Mittal Steel Gandrange Forged or stamped average or small size mechanical part

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5693822A (en) * 1979-12-27 1981-07-29 Nippon Kokan Kk <Nkk> Production of low-yield-ratio, high-tension hot-rolled steel-plate having excellent workability
JPS56136928A (en) * 1980-03-26 1981-10-26 Sumitomo Metal Ind Ltd Production of composite structure type high tensile hot rolled steel plate of superior cold workability
JPS5713124A (en) * 1980-06-23 1982-01-23 Kawasaki Steel Corp Production of high tensile steel sheet of superiror cold workability

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5693822A (en) * 1979-12-27 1981-07-29 Nippon Kokan Kk <Nkk> Production of low-yield-ratio, high-tension hot-rolled steel-plate having excellent workability
JPS56136928A (en) * 1980-03-26 1981-10-26 Sumitomo Metal Ind Ltd Production of composite structure type high tensile hot rolled steel plate of superior cold workability
JPS5713124A (en) * 1980-06-23 1982-01-23 Kawasaki Steel Corp Production of high tensile steel sheet of superiror cold workability

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005100618A3 (en) * 2004-03-18 2006-01-12 Mittal Steel Gandrange Forged or stamped average or small size mechanical part

Also Published As

Publication number Publication date
JPS6330971B2 (en) 1988-06-21

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