JPS5638426A - Direct heat treatment of hot-rolled metal wire - Google Patents

Direct heat treatment of hot-rolled metal wire

Info

Publication number
JPS5638426A
JPS5638426A JP11489479A JP11489479A JPS5638426A JP S5638426 A JPS5638426 A JP S5638426A JP 11489479 A JP11489479 A JP 11489479A JP 11489479 A JP11489479 A JP 11489479A JP S5638426 A JPS5638426 A JP S5638426A
Authority
JP
Japan
Prior art keywords
temperature
wire material
salt
bath
hot
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
JP11489479A
Other languages
Japanese (ja)
Other versions
JPS5937725B2 (en
Inventor
Jiro Tominaga
Kinya Wakimoto
Kyoichiro Matsuoka
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 JP11489479A priority Critical patent/JPS5937725B2/en
Priority to GB8028315A priority patent/GB2064593B/en
Priority to DE19803033500 priority patent/DE3033500A1/en
Priority to SE8006201A priority patent/SE448742B/en
Priority to US06/184,324 priority patent/US4314860A/en
Publication of JPS5638426A publication Critical patent/JPS5638426A/en
Publication of JPS5937725B2 publication Critical patent/JPS5937725B2/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
    • 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 manufacture a wire material having an excellent drawability and an excellent processability by a method in which nonconcentric ringlike hot-rolled metal wire is soaked to a specific temperature continuously in a constant-temperature furnace, quickly cooled in a low-temperature salt-bath, and then completely modified into sorbite in a high-temperature salt-bath. CONSTITUTION:The wire material 2 coming out of the final finish rolling machine 1 is water-cooled to Ar1 or more in the cooling induction tube 3, supplied onto the conveyer 6 in the form of nonconcentric ringlike loose coil 7 through the pinch roll 4 and the laying cone 5, passed through the constant-temperature furnace 8, and soaked to a temperature right above the point Ar1 throughout the whole length of all the sectional area of the wire material. Then, the wire material is dipped in and passed through the high-temperature salt-bath 11 of a temperature corresponding to the TTT curve nose portion to complete the modification of the unmodified austenite into sorbite structure in a short time. Then, it is dipped in the washing tank 11 to wash and remove adhered salt and then collected in the collecting tub 12.
JP11489479A 1979-09-06 1979-09-07 Direct heat treatment method for hot rolled wire rod Expired JPS5937725B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP11489479A JPS5937725B2 (en) 1979-09-07 1979-09-07 Direct heat treatment method for hot rolled wire rod
GB8028315A GB2064593B (en) 1979-09-06 1980-09-02 Direct sorbitic transformation of hotrolled steel rod
DE19803033500 DE3033500A1 (en) 1979-09-06 1980-09-05 METHOD FOR THE DIRECT HEAT TREATMENT OF HOT ROLLED STEEL WIRE
SE8006201A SE448742B (en) 1979-09-06 1980-09-05 Heat treatment of steel rod leaving rolling mill
US06/184,324 US4314860A (en) 1979-09-06 1980-09-05 Method for direct heat treating hot rolled steel wire rod

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11489479A JPS5937725B2 (en) 1979-09-07 1979-09-07 Direct heat treatment method for hot rolled wire rod

Publications (2)

Publication Number Publication Date
JPS5638426A true JPS5638426A (en) 1981-04-13
JPS5937725B2 JPS5937725B2 (en) 1984-09-11

Family

ID=14649303

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11489479A Expired JPS5937725B2 (en) 1979-09-06 1979-09-07 Direct heat treatment method for hot rolled wire rod

Country Status (1)

Country Link
JP (1) JPS5937725B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6160362A (en) * 1984-08-20 1986-03-28 アメリカン・スタンダード・インコーポレイテツド Brake controller
US5578150A (en) * 1992-07-28 1996-11-26 Nippon Steel Corporation Heat treatment process for wire rods
JP2009275252A (en) * 2008-05-13 2009-11-26 Nippon Steel Corp Steel wire rod excellent in cold forgeability after annealing, and method for production thereof
JP2010159476A (en) * 2009-01-09 2010-07-22 Nippon Steel Corp Steel wire rod having excellent cold forgeability after low temperature annealing and method for producing the same, and method for producing steel wire rod having excellent cold forgeability

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6160362A (en) * 1984-08-20 1986-03-28 アメリカン・スタンダード・インコーポレイテツド Brake controller
JPH0418585B2 (en) * 1984-08-20 1992-03-27 American Standard Inc
US5578150A (en) * 1992-07-28 1996-11-26 Nippon Steel Corporation Heat treatment process for wire rods
JP2009275252A (en) * 2008-05-13 2009-11-26 Nippon Steel Corp Steel wire rod excellent in cold forgeability after annealing, and method for production thereof
JP2010159476A (en) * 2009-01-09 2010-07-22 Nippon Steel Corp Steel wire rod having excellent cold forgeability after low temperature annealing and method for producing the same, and method for producing steel wire rod having excellent cold forgeability

Also Published As

Publication number Publication date
JPS5937725B2 (en) 1984-09-11

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