GB515331A - Improvements in, or relating to, annealing and other heat-treatment furnaces - Google Patents

Improvements in, or relating to, annealing and other heat-treatment furnaces

Info

Publication number
GB515331A
GB515331A GB1812238A GB1812238A GB515331A GB 515331 A GB515331 A GB 515331A GB 1812238 A GB1812238 A GB 1812238A GB 1812238 A GB1812238 A GB 1812238A GB 515331 A GB515331 A GB 515331A
Authority
GB
United Kingdom
Prior art keywords
hearth
pipes
furnace
gas
exhaust
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
GB1812238A
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.)
BIRMINGHAM ELECTR FURNACES Ltd
Original Assignee
BIRMINGHAM ELECTR FURNACES 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 BIRMINGHAM ELECTR FURNACES Ltd filed Critical BIRMINGHAM ELECTR FURNACES Ltd
Priority to GB1812238A priority Critical patent/GB515331A/en
Publication of GB515331A publication Critical patent/GB515331A/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
    • C21D9/663—Bell-type furnaces
    • C21D9/667—Multi-station furnaces
    • C21D9/67—Multi-station furnaces adapted for treating the charge in vacuum or special atmosphere

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)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

515,331. Metal-heating furnaces. BIRMINGHAM ELECTRIC FURNACES, Ltd. LOBLEY, A. G., and ROBIETTE, A. G. E. June 18, 1938, No. 18122. [Class 51 (ii)] The hearth of a bright annealing furnace having a removable heating hood or bell is formed of a porous refractory, and arrangements are provided for forcing gas through the material of the hearth for removing moisture or occluded gases which may act detrimentally on the metal. The purging gas may be that used as a protective atmosphere in the furnace. In the arrangement shown, pipes a, e for the supply and exhaust respectively of a protective gas extend vertically through the hearth f and open into the space beneath the hood h, and other exhaust pipes g are connected at points on a circle to the underside of the hearth. The pipes e and g lead to a common exhaust main, the latter through a moisture trap i. In starting up the furnace, either initially or after it has been standing idle, the offtake e is closed and gas supplied through the intake a is exhausted through the porous hearth and the pipes g, while for normal working the offtake e is opened and the pipes g are closed or left open as may be desired. In a modification a single exhaust pipe for the protective gas is connected to a chamber beneath the hearth which is supported on a perforated plate. A fan d may be provided to circulate the furnace atmosphere.
GB1812238A 1938-06-18 1938-06-18 Improvements in, or relating to, annealing and other heat-treatment furnaces Expired GB515331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1812238A GB515331A (en) 1938-06-18 1938-06-18 Improvements in, or relating to, annealing and other heat-treatment furnaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1812238A GB515331A (en) 1938-06-18 1938-06-18 Improvements in, or relating to, annealing and other heat-treatment furnaces

Publications (1)

Publication Number Publication Date
GB515331A true GB515331A (en) 1939-12-01

Family

ID=10107031

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1812238A Expired GB515331A (en) 1938-06-18 1938-06-18 Improvements in, or relating to, annealing and other heat-treatment furnaces

Country Status (1)

Country Link
GB (1) GB515331A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2971871A (en) * 1958-01-29 1961-02-14 Midland Ross Corp Annealing furnace seal
US3037889A (en) * 1958-12-04 1962-06-05 United States Steel Corp Method and apparatus for annealing coils of strip metal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2971871A (en) * 1958-01-29 1961-02-14 Midland Ross Corp Annealing furnace seal
US3037889A (en) * 1958-12-04 1962-06-05 United States Steel Corp Method and apparatus for annealing coils of strip metal

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