JPS54119323A - Production of high strength reinforcing steel material of superior weldability - Google Patents

Production of high strength reinforcing steel material of superior weldability

Info

Publication number
JPS54119323A
JPS54119323A JP2652378A JP2652378A JPS54119323A JP S54119323 A JPS54119323 A JP S54119323A JP 2652378 A JP2652378 A JP 2652378A JP 2652378 A JP2652378 A JP 2652378A JP S54119323 A JPS54119323 A JP S54119323A
Authority
JP
Japan
Prior art keywords
high strength
reinforcing steel
strength reinforcing
steel material
weldability
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
JP2652378A
Other languages
Japanese (ja)
Other versions
JPS5929648B2 (en
Inventor
Masaaki Murakami
Hiroshi Sato
Shin5Ichi Mogami
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 JP2652378A priority Critical patent/JPS5929648B2/en
Publication of JPS54119323A publication Critical patent/JPS54119323A/en
Publication of JPS5929648B2 publication Critical patent/JPS5929648B2/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
    • C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • C21D8/08—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires for concrete reinforcement

Abstract

PURPOSE:To produce a high strength reinforcing steel material of superior weldability by depositing a large amount of AlN in medium carbon steel of a carbon equivalent range of not impairing weldability to fine the texture and rapidly performing cooling from finishing of rolling up to taking-up. CONSTITUTION:The medium carbon steel which contains C; 0.29 to 0.38%, Si; 0.15 to 0.35%, Mn; 0.30 to 1.30%, N; 0.004 to 0.006%, Al; 0.03 to 0.06% and which is of such constitution wherein the value of (C+Mn/6) becomes 0.5% is heated to 1050 deg.C or higher. Next, this material is hot rolled to a wire material and the temperature range of 900 to 500 deg.C upon ending of the final pass is quenched at mean cooling rates of 8 to 13 deg.C/sec. A large amount of AlN precipitates and the fine texture whose ferrite crystal grain size is 10 or more in ASTM ferrite crystal grain size is provided. Finally, the material is cold drawn at 50 to 80% of reduction of area, whereby the high strength reinforcing steel material of superior weldability is produced.
JP2652378A 1978-03-10 1978-03-10 Method for manufacturing high-strength reinforcing bars with excellent weldability Expired JPS5929648B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2652378A JPS5929648B2 (en) 1978-03-10 1978-03-10 Method for manufacturing high-strength reinforcing bars with excellent weldability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2652378A JPS5929648B2 (en) 1978-03-10 1978-03-10 Method for manufacturing high-strength reinforcing bars with excellent weldability

Publications (2)

Publication Number Publication Date
JPS54119323A true JPS54119323A (en) 1979-09-17
JPS5929648B2 JPS5929648B2 (en) 1984-07-21

Family

ID=12195828

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2652378A Expired JPS5929648B2 (en) 1978-03-10 1978-03-10 Method for manufacturing high-strength reinforcing bars with excellent weldability

Country Status (1)

Country Link
JP (1) JPS5929648B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100432244C (en) * 2007-04-02 2008-11-12 马鞍山钢铁股份有限公司 Method for producing medium-carbon steel deformation induced ferrite
RU2764045C1 (en) * 2020-12-14 2022-01-13 Открытое акционерное общество "Магнитогорский метизно-калибровочный завод "ММК-МЕТИЗ" Method for manufacturing high-strength steel reinforcement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01158052U (en) * 1988-04-20 1989-10-31

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100432244C (en) * 2007-04-02 2008-11-12 马鞍山钢铁股份有限公司 Method for producing medium-carbon steel deformation induced ferrite
RU2764045C1 (en) * 2020-12-14 2022-01-13 Открытое акционерное общество "Магнитогорский метизно-калибровочный завод "ММК-МЕТИЗ" Method for manufacturing high-strength steel reinforcement

Also Published As

Publication number Publication date
JPS5929648B2 (en) 1984-07-21

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