GB252405A - Improvements in or relating to bright annealing furnaces - Google Patents

Improvements in or relating to bright annealing furnaces

Info

Publication number
GB252405A
GB252405A GB13203/26A GB1320326A GB252405A GB 252405 A GB252405 A GB 252405A GB 13203/26 A GB13203/26 A GB 13203/26A GB 1320326 A GB1320326 A GB 1320326A GB 252405 A GB252405 A GB 252405A
Authority
GB
United Kingdom
Prior art keywords
bell
charge
inert gas
heating
cover
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
GB13203/26A
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.)
Siemens Elektrowaerme GmbH
Original Assignee
Siemens Elektrowaerme GmbH
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 Siemens Elektrowaerme GmbH filed Critical Siemens Elektrowaerme GmbH
Publication of GB252405A publication Critical patent/GB252405A/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

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)
  • Furnace Details (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

252,405. Siemens-Elektrowarme Ges. May 25,1925, [Convention date]. Resistance furnaces. -An annealing-furnace using an inert atmosphere comprises a heating bell 1 making a joint with an oil bath 3 in a charge supporting base, and a protecting bell 3 fitting into a sand seal 8 and within which the charge is allowed to cool after removal of the heating bell. The latter may be stationary and the charged bell 3 inserted and removed from below or, as shown, the base supporting the charge 2 and bell 3 may be fixed and the cover 1 movable. Inert gas is supplied to and discharged from the space 4 and the bell 3 through pipes 5, and ports 9, 10 respectively. On completion of the heating period the gas is withdrawn from the space 4 and delivered to another furnace or to a storage vessel, and the hot cover 1 is removed to another freshly-charged bell 3 and replaced by a cold cover. As the cooling proceeds, inert gas from a storage vessel is supplied to the interior of the bell 3 to maintain atmospheric pressure and so prevent entry of air. The cooling may be acceleratedby circulating inert gas through the bell 3 and either a cooling device or another furnace.
GB13203/26A 1925-05-25 1926-05-25 Improvements in or relating to bright annealing furnaces Expired GB252405A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE252405X 1925-05-25

Publications (1)

Publication Number Publication Date
GB252405A true GB252405A (en) 1926-12-09

Family

ID=5947834

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13203/26A Expired GB252405A (en) 1925-05-25 1926-05-25 Improvements in or relating to bright annealing furnaces

Country Status (1)

Country Link
GB (1) GB252405A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2657036A (en) * 1950-09-27 1953-10-27 Jones & Laughlin Steel Corp Cooling apparatus
US2775441A (en) * 1953-02-02 1956-12-25 Bethlehem Steel Corp Cooling cover for annealing furnaces
US2781188A (en) * 1953-07-06 1957-02-12 Controlled Heat & Air Ltd Means for cooling the load of a coil annealing furnace or the like

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2657036A (en) * 1950-09-27 1953-10-27 Jones & Laughlin Steel Corp Cooling apparatus
US2775441A (en) * 1953-02-02 1956-12-25 Bethlehem Steel Corp Cooling cover for annealing furnaces
US2781188A (en) * 1953-07-06 1957-02-12 Controlled Heat & Air Ltd Means for cooling the load of a coil annealing furnace or the like

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