JPS57194214A - Production of high ductility and high yield point steel - Google Patents

Production of high ductility and high yield point steel

Info

Publication number
JPS57194214A
JPS57194214A JP7735881A JP7735881A JPS57194214A JP S57194214 A JPS57194214 A JP S57194214A JP 7735881 A JP7735881 A JP 7735881A JP 7735881 A JP7735881 A JP 7735881A JP S57194214 A JPS57194214 A JP S57194214A
Authority
JP
Japan
Prior art keywords
steel
ductility
yield point
high yield
production
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
JP7735881A
Other languages
Japanese (ja)
Inventor
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 JP7735881A priority Critical patent/JPS57194214A/en
Publication of JPS57194214A publication Critical patent/JPS57194214A/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)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

PURPOSE:To produce high ductility and high yield point steel at a low cost in reduced stages by casting steel contg. specific amts. of C, Si, Mn, Ti, N, Al continuously, and ending hot rolling at temps. higher than specific temp. directly or after heat holding. CONSTITUTION:The steel consisting of 0.02-0.10% C, <=0.05% Si, 0.10-0.80% Mn, 0.002-0.02% Ti, <=50ppm N, 0.005-0.05% Al and unavoidable impurities is cast continuously. This high temp. ingot is directly hot rolled or is completed of hot rolling at temps. higher than the Ar3 point by way of a soaking stage of holding its heat or light heating. With this steel, the degradation of its ductility by the deposition of carbonitride of Ti deposited in the direct rolling state is obviated by the addition of a limited amt. of Ti in particular, and in spite of this, the ferrite structure is fined and the strength is increased. In this way, the original unit of fuel in the production of the high ductility and high yield point steel is reduced.
JP7735881A 1981-05-23 1981-05-23 Production of high ductility and high yield point steel Pending JPS57194214A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7735881A JPS57194214A (en) 1981-05-23 1981-05-23 Production of high ductility and high yield point steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7735881A JPS57194214A (en) 1981-05-23 1981-05-23 Production of high ductility and high yield point steel

Publications (1)

Publication Number Publication Date
JPS57194214A true JPS57194214A (en) 1982-11-29

Family

ID=13631679

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7735881A Pending JPS57194214A (en) 1981-05-23 1981-05-23 Production of high ductility and high yield point steel

Country Status (1)

Country Link
JP (1) JPS57194214A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59143021A (en) * 1983-02-04 1984-08-16 Nippon Steel Corp Production of hot rolled steel sheet having excellent ductility
JPS6056024A (en) * 1983-09-05 1985-04-01 Sumitomo Metal Ind Ltd Manufacture of hot-rolled high-tension steel plate
JPS61170512A (en) * 1985-01-25 1986-08-01 Nippon Steel Corp Manufacture of high tension steel for high heat input welding

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59143021A (en) * 1983-02-04 1984-08-16 Nippon Steel Corp Production of hot rolled steel sheet having excellent ductility
JPH0558044B2 (en) * 1983-02-04 1993-08-25 Nippon Steel Corp
JPS6056024A (en) * 1983-09-05 1985-04-01 Sumitomo Metal Ind Ltd Manufacture of hot-rolled high-tension steel plate
JPH0132292B2 (en) * 1983-09-05 1989-06-30 Sumitomo Metal Ind
JPS61170512A (en) * 1985-01-25 1986-08-01 Nippon Steel Corp Manufacture of high tension steel for high heat input welding

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