GB787844A - Improvements in or relating to the heat treatment of metal objects in continuous heating furnaces - Google Patents

Improvements in or relating to the heat treatment of metal objects in continuous heating furnaces

Info

Publication number
GB787844A
GB787844A GB15514/54A GB1551454A GB787844A GB 787844 A GB787844 A GB 787844A GB 15514/54 A GB15514/54 A GB 15514/54A GB 1551454 A GB1551454 A GB 1551454A GB 787844 A GB787844 A GB 787844A
Authority
GB
United Kingdom
Prior art keywords
strip
furnace
heat treatment
temperature
pyrometer
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
GB15514/54A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB787844A publication Critical patent/GB787844A/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
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire

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

787,844. Annealing. MUNKER, T. May 26, 1954 [May 27, 1953], No. 15514/54. Class 72 A continuous process for the heat treatment of metal objects comprises subjecting the objects to a high temperature for a short time in a suitable medium to dull or darken the surface, and then subjecting them to a conventional heat treatment. As shown, applied to the treatment of metal strip, the strip is wound off a coil 2 and passed through flames from gas burners 3 which produce a temperature of 1500‹C., the strip being in the flames for such a time as will cause a darkening of the surface and the temperature of the surfaces not exceeding 200‹C. The strip then passes through an electrically heated tunnel furnace G and is recoiled at 8. The temperature of the strip may be determined before it enters the hottest zone of the furnace by a pyrometer 11 which may be traversed across the furnace and which may be used to control the speed of the strip. In the case of separate objects passing through the furnace the pyrometer may be controlled by a light sensitive cell system 16, 17 to operate only when an object is in a predetermined position. Instead of gas burners there may be used a hot liquid which may have a chemical action on the surface or a high frequency electric heater may be used. The dulling of the surface may be further improved by mechanical means, e.g. by a roughened roller.
GB15514/54A 1953-05-27 1954-05-26 Improvements in or relating to the heat treatment of metal objects in continuous heating furnaces Expired GB787844A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE787844X 1953-05-27

Publications (1)

Publication Number Publication Date
GB787844A true GB787844A (en) 1957-12-18

Family

ID=6699344

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15514/54A Expired GB787844A (en) 1953-05-27 1954-05-26 Improvements in or relating to the heat treatment of metal objects in continuous heating furnaces

Country Status (1)

Country Link
GB (1) GB787844A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000199A (en) * 1977-06-20 1979-01-04 Bulten Kanthal Ab Annealing ovens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000199A (en) * 1977-06-20 1979-01-04 Bulten Kanthal Ab Annealing ovens
GB2000199B (en) * 1977-06-20 1982-03-10 Bulten Kanthal Ab Improvements in or relating to annealing ovens

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