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GB1048833A - Heat treatment of elongate material - Google Patents

Heat treatment of elongate material

Info

Publication number
GB1048833A
GB1048833A GB600363A GB600363A GB1048833A GB 1048833 A GB1048833 A GB 1048833A GB 600363 A GB600363 A GB 600363A GB 600363 A GB600363 A GB 600363A GB 1048833 A GB1048833 A GB 1048833A
Authority
GB
United Kingdom
Prior art keywords
bed
coiled
rod
sorbitic
heat treatment
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.)
Expired
Application number
GB600363A
Inventor
Robert Frederick Jenkin Morgan
Jack Smith
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.)
Davy Loewy Ltd
Original Assignee
Davy Loewy 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 Davy Loewy Ltd filed Critical Davy Loewy Ltd
Priority to GB600363A priority Critical patent/GB1048833A/en
Publication of GB1048833A publication Critical patent/GB1048833A/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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/34—Methods of heating
    • C21D1/53—Heating in fluidised beds
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/84—Controlled slow cooling
    • 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
    • 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
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • C21D9/5732—Continuous furnaces for strip or wire with cooling of wires; of 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)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

Hot rod from a rolling mill is continuously coiled into a cooled fluidized bed where it is retained until the desired structure has been retained and is then removed. The process is particularly applied to steel containing 0.4 to 0.85% carbon which is coiled into a bed held at such a temperature that a fine pearlite structure is formed; the bed temperature may be such that the rod cools from the A3 point to the upper limit of the sorbitic range in not more than four seconds, and is maintained in the sorbitic range for at least ten seconds before removal. The Specification also claims apparatus consisting of a fluidized bed device and a laying head; there may also be included a perforated container which may be removably located in the bed and into which the rod is coiled.
GB600363A 1963-02-14 1963-02-14 Heat treatment of elongate material Expired GB1048833A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB600363A GB1048833A (en) 1963-02-14 1963-02-14 Heat treatment of elongate material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB600363A GB1048833A (en) 1963-02-14 1963-02-14 Heat treatment of elongate material

Publications (1)

Publication Number Publication Date
GB1048833A true GB1048833A (en) 1966-11-23

Family

ID=9806644

Family Applications (1)

Application Number Title Priority Date Filing Date
GB600363A Expired GB1048833A (en) 1963-02-14 1963-02-14 Heat treatment of elongate material

Country Status (1)

Country Link
GB (1) GB1048833A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4011110A (en) * 1974-07-25 1977-03-08 Arbed-F & G Drahtwerke Koln Gmbh Method and apparatus for forming and treating bundles of steel rods
GB2397071A (en) * 2003-01-13 2004-07-14 Boc Group Plc Quenching method and quenching chamber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4011110A (en) * 1974-07-25 1977-03-08 Arbed-F & G Drahtwerke Koln Gmbh Method and apparatus for forming and treating bundles of steel rods
GB2397071A (en) * 2003-01-13 2004-07-14 Boc Group Plc Quenching method and quenching chamber

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