JPS5591935A - Preparation of high tension, high ductility wire rod and steel bar for high strength bolt - Google Patents

Preparation of high tension, high ductility wire rod and steel bar for high strength bolt

Info

Publication number
JPS5591935A
JPS5591935A JP16472778A JP16472778A JPS5591935A JP S5591935 A JPS5591935 A JP S5591935A JP 16472778 A JP16472778 A JP 16472778A JP 16472778 A JP16472778 A JP 16472778A JP S5591935 A JPS5591935 A JP S5591935A
Authority
JP
Japan
Prior art keywords
steel bar
strength bolt
steel material
wire rod
high strength
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
JP16472778A
Other languages
Japanese (ja)
Other versions
JPS5811492B2 (en
Inventor
Naoki Eguchi
Masaki Araki
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 JP16472778A priority Critical patent/JPS5811492B2/en
Publication of JPS5591935A publication Critical patent/JPS5591935A/en
Publication of JPS5811492B2 publication Critical patent/JPS5811492B2/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (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 Strip Materials And Filament Materials (AREA)

Abstract

PURPOSE:To manufacture the steel material for high strength bolt, by drawing the steel material into having balanced constitution of strength and ductility wire into rod, steel bar etc. controlling cooling after carrying out hot rolling of the steel material. CONSTITUTION:Wire rod or steel bar, is manufactured by carrying out hot rolling of steel material added C; 0.01-0.20%, Si; 0.03-1.20%, Mn; 0.30-2.50%, Al< 0.10%, Ti; 0.005-0.30%, B; 0.0003-0.0050%, Cu; 0.1-0.5% or moreover, Cr; 0.1-0.8% and contained Ni; 0.10-1.0%, if necessary. Finishing temperature is made 1050-850 deg.C and cooling is carried out at the cooling speed of 1-60 deg.C/sec. from a temperature of Ar1 transformation point +50 deg.C or more to 500 deg.C. Ferrite and pearlite or bainite structure, are formed minutely and strength-ductility balance is improved remarkably. The above material is suitable for the material of high strength bolt for motor car, electrical machinery and appliances, architecture, engineering works or machine parts.
JP16472778A 1978-12-28 1978-12-28 Manufacturing method of high-tensile and high-ductility wire and steel bars for high-strength bolts Expired JPS5811492B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16472778A JPS5811492B2 (en) 1978-12-28 1978-12-28 Manufacturing method of high-tensile and high-ductility wire and steel bars for high-strength bolts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16472778A JPS5811492B2 (en) 1978-12-28 1978-12-28 Manufacturing method of high-tensile and high-ductility wire and steel bars for high-strength bolts

Publications (2)

Publication Number Publication Date
JPS5591935A true JPS5591935A (en) 1980-07-11
JPS5811492B2 JPS5811492B2 (en) 1983-03-03

Family

ID=15798741

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16472778A Expired JPS5811492B2 (en) 1978-12-28 1978-12-28 Manufacturing method of high-tensile and high-ductility wire and steel bars for high-strength bolts

Country Status (1)

Country Link
JP (1) JPS5811492B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4491476A (en) * 1982-04-03 1985-01-01 Sumitomo Electric Industries, Ltd. Boron-containing steel and a process for producing the same
US4563222A (en) * 1983-06-29 1986-01-07 Sugita Wire Mfg. Co., Ltd. High strength bolt and method of producing same
US4812182A (en) * 1987-07-31 1989-03-14 Hongsheng Fang Air-cooling low-carbon bainitic steel
EP2199422A1 (en) * 2008-12-15 2010-06-23 Swiss Steel AG Low-carbon precipitation-strengthened steel for cold heading applications
WO2012098938A1 (en) * 2011-01-18 2012-07-26 株式会社神戸製鋼所 Delayed-fracture-resistant boron-containing steel for high-strength bolts, and high-strength bolts
CN104894476A (en) * 2015-06-12 2015-09-09 常州东大中天钢铁研究院有限公司 Steel wire rod for building grid and preparation method of steel wire rod
JP2015190002A (en) * 2014-03-28 2015-11-02 Ｊｆｅ条鋼株式会社 Non-refined steel material for weld bolt and method for producing the same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4491476A (en) * 1982-04-03 1985-01-01 Sumitomo Electric Industries, Ltd. Boron-containing steel and a process for producing the same
US4563222A (en) * 1983-06-29 1986-01-07 Sugita Wire Mfg. Co., Ltd. High strength bolt and method of producing same
US4812182A (en) * 1987-07-31 1989-03-14 Hongsheng Fang Air-cooling low-carbon bainitic steel
EP2199422A1 (en) * 2008-12-15 2010-06-23 Swiss Steel AG Low-carbon precipitation-strengthened steel for cold heading applications
WO2012098938A1 (en) * 2011-01-18 2012-07-26 株式会社神戸製鋼所 Delayed-fracture-resistant boron-containing steel for high-strength bolts, and high-strength bolts
JP2012162798A (en) * 2011-01-18 2012-08-30 Kobe Steel Ltd Boron-containing steel for high strength bolt, excellent in delayed fracture resistance, and high-strength bolt
JP2015190002A (en) * 2014-03-28 2015-11-02 Ｊｆｅ条鋼株式会社 Non-refined steel material for weld bolt and method for producing the same
CN104894476A (en) * 2015-06-12 2015-09-09 常州东大中天钢铁研究院有限公司 Steel wire rod for building grid and preparation method of steel wire rod

Also Published As

Publication number Publication date
JPS5811492B2 (en) 1983-03-03

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