GB513219A - Improvements in, or relating to, continuous heat treatment furnaces - Google Patents

Improvements in, or relating to, continuous heat treatment furnaces

Info

Publication number
GB513219A
GB513219A GB995938A GB995938A GB513219A GB 513219 A GB513219 A GB 513219A GB 995938 A GB995938 A GB 995938A GB 995938 A GB995938 A GB 995938A GB 513219 A GB513219 A GB 513219A
Authority
GB
United Kingdom
Prior art keywords
oil
furnace
articles
heat treatment
continuous heat
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
GB995938A
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
THOMAS GORDON TANNER
Original Assignee
BIRMINGHAM ELECTR FURNACES Ltd
THOMAS GORDON TANNER
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, THOMAS GORDON TANNER filed Critical BIRMINGHAM ELECTR FURNACES Ltd
Priority to GB995938A priority Critical patent/GB513219A/en
Publication of GB513219A publication Critical patent/GB513219A/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
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material

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)
  • Manufacture And Refinement Of Metals (AREA)
  • Furnace Details (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

513,219. Continuous metal-heating furnaces. BIRMINGHAM ELECTRIC FURNACES, Ltd., and TANNER, T. G. April 1, 1938, No. 9959. [Class 51 (ii)] In the continuous heat treatment of metal articles which are contaminated by oil or grease, the articles are passed, before entering the main heating-chamber b, through a preheating chamber d maintained at a constant temperature between the volatilization and cracking temperatures of the oil or grease, the oil vapours being removed by a stream of non- oxidizing or reducing gas which is circulated through the furnace in counter-current with the articles. The outflowing protective gas may be passed through a condenser or filter i and a burner apparatus j, for the removal of oil vapour and oxygen respectively, and recirculated through the furnace by a pump h. A portion e of the furnace between the main and preheating sections is fitted with a cooling- jacket to reduce the temperature of the circulating gas to below the cracking temperature of the oil.
GB995938A 1938-04-01 1938-04-01 Improvements in, or relating to, continuous heat treatment furnaces Expired GB513219A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB995938A GB513219A (en) 1938-04-01 1938-04-01 Improvements in, or relating to, continuous heat treatment furnaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB995938A GB513219A (en) 1938-04-01 1938-04-01 Improvements in, or relating to, continuous heat treatment furnaces

Publications (1)

Publication Number Publication Date
GB513219A true GB513219A (en) 1939-10-06

Family

ID=9881928

Family Applications (1)

Application Number Title Priority Date Filing Date
GB995938A Expired GB513219A (en) 1938-04-01 1938-04-01 Improvements in, or relating to, continuous heat treatment furnaces

Country Status (1)

Country Link
GB (1) GB513219A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1032294B (en) * 1954-01-26 1958-06-19 Berkenhoff & Co Kommanditgesel Process for bright annealing of iron, steel, metals and metal alloys
FR2072539A5 (en) * 1969-11-28 1971-09-24 Aichelin Fa J Process for the purification of the protective atmosphere of an industrial furnace and pass-through furnace for the implementation of this process.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1032294B (en) * 1954-01-26 1958-06-19 Berkenhoff & Co Kommanditgesel Process for bright annealing of iron, steel, metals and metal alloys
FR2072539A5 (en) * 1969-11-28 1971-09-24 Aichelin Fa J Process for the purification of the protective atmosphere of an industrial furnace and pass-through furnace for the implementation of this process.

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