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JPS5723026A - Spheroidization treatment for bar steel material - Google Patents

Spheroidization treatment for bar steel material

Info

Publication number
JPS5723026A
JPS5723026A JP9665980A JP9665980A JPS5723026A JP S5723026 A JPS5723026 A JP S5723026A JP 9665980 A JP9665980 A JP 9665980A JP 9665980 A JP9665980 A JP 9665980A JP S5723026 A JPS5723026 A JP S5723026A
Authority
JP
Japan
Prior art keywords
steel material
bar steel
rate
heating
temperature
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
JP9665980A
Other languages
Japanese (ja)
Other versions
JPS6115930B2 (en
Inventor
Takeshi Inoue
Koji Kaneko
Tetsuo Toyoda
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP9665980A priority Critical patent/JPS5723026A/en
Publication of JPS5723026A publication Critical patent/JPS5723026A/en
Publication of JPS6115930B2 publication Critical patent/JPS6115930B2/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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods

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 Strip Materials And Filament Materials (AREA)

Abstract

PURPOSE:To give an evenly spheroidized structure to a bar steel material by a short-period heat treatment in which a stranded bar steel material is subjected to an annealing treatment involving heating and cooling under specific conditions. CONSTITUTION:A bar steel material, e.g., of carbon steel for the structures of machinery, cold rolling, etc., is made into a strand form, and then heated to a target temperature of Ac1+30 deg.C to Ac1+150 deg.C at an average heating rate of 50 deg.C/min or more. Then, the bar steel material is held at the target temperature for 5min or less, cooled for 10min or less to the transformation point Ar1, and then cooled at an average cooling rate of 0.5 to 5 deg.C/min in a temperature region of Ac1 to 40 deg.C for spheroidization. Thus, high temperatures can be effectively utilized because the rate, time, and temperature of heating the bar steel material can be exactly controlled, so that a bar steel material having evenly spheroidized structure can be obtained by a short-period heat treatment.
JP9665980A 1980-07-14 1980-07-14 Spheroidization treatment for bar steel material Granted JPS5723026A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9665980A JPS5723026A (en) 1980-07-14 1980-07-14 Spheroidization treatment for bar steel material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9665980A JPS5723026A (en) 1980-07-14 1980-07-14 Spheroidization treatment for bar steel material

Publications (2)

Publication Number Publication Date
JPS5723026A true JPS5723026A (en) 1982-02-06
JPS6115930B2 JPS6115930B2 (en) 1986-04-26

Family

ID=14170952

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9665980A Granted JPS5723026A (en) 1980-07-14 1980-07-14 Spheroidization treatment for bar steel material

Country Status (1)

Country Link
JP (1) JPS5723026A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59113126A (en) * 1982-12-17 1984-06-29 Sumitomo Metal Ind Ltd Continuous spheroidization treatment of steel wire
JPS59116330A (en) * 1982-12-21 1984-07-05 Sumitomo Metal Ind Ltd Continuous spheroidizing treatment of steel wire
CN1089116C (en) * 1999-04-30 2002-08-14 吴凡 Carbide annealing process for high-speed great-deformation hot-rolled and cold-upset steel
KR100653134B1 (en) 2006-04-25 2006-12-04 광진실업 주식회사 A machine for spheroidization
JP2007077432A (en) * 2005-09-13 2007-03-29 Sanyo Special Steel Co Ltd Method for producing ball screw or one-way clutch component
JP2009242919A (en) * 2008-03-31 2009-10-22 Jfe Steel Corp Heat-treatment method for bearing steel
JP2009242917A (en) * 2008-03-31 2009-10-22 Jfe Steel Corp Heat-treatment method for bearing steel
KR100946129B1 (en) * 2002-12-11 2010-03-10 주식회사 포스코 A spheroidizing annealing method to soften medium carbon steel rapidly
CN102399954A (en) * 2011-11-28 2012-04-04 燕山大学 Variable-temperature treatment fast nodulizing method for high-carbon pearlite steel
CN111270066A (en) * 2020-02-11 2020-06-12 宝钢湛江钢铁有限公司 Humidification method of continuous annealing unit based on ultrasonic technology and aiming at nodulation prevention and treatment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62208213A (en) * 1986-03-07 1987-09-12 株式会社新宮商行 Cord delivery apparatus of reaper

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59113126A (en) * 1982-12-17 1984-06-29 Sumitomo Metal Ind Ltd Continuous spheroidization treatment of steel wire
JPS59116330A (en) * 1982-12-21 1984-07-05 Sumitomo Metal Ind Ltd Continuous spheroidizing treatment of steel wire
CN1089116C (en) * 1999-04-30 2002-08-14 吴凡 Carbide annealing process for high-speed great-deformation hot-rolled and cold-upset steel
KR100946129B1 (en) * 2002-12-11 2010-03-10 주식회사 포스코 A spheroidizing annealing method to soften medium carbon steel rapidly
JP2007077432A (en) * 2005-09-13 2007-03-29 Sanyo Special Steel Co Ltd Method for producing ball screw or one-way clutch component
JP4569961B2 (en) * 2005-09-13 2010-10-27 山陽特殊製鋼株式会社 Manufacturing method of parts for ball screw or one-way clutch
KR100653134B1 (en) 2006-04-25 2006-12-04 광진실업 주식회사 A machine for spheroidization
JP2009242919A (en) * 2008-03-31 2009-10-22 Jfe Steel Corp Heat-treatment method for bearing steel
JP2009242917A (en) * 2008-03-31 2009-10-22 Jfe Steel Corp Heat-treatment method for bearing steel
CN102399954A (en) * 2011-11-28 2012-04-04 燕山大学 Variable-temperature treatment fast nodulizing method for high-carbon pearlite steel
CN111270066A (en) * 2020-02-11 2020-06-12 宝钢湛江钢铁有限公司 Humidification method of continuous annealing unit based on ultrasonic technology and aiming at nodulation prevention and treatment

Also Published As

Publication number Publication date
JPS6115930B2 (en) 1986-04-26

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