GB878686A - Improvements in and relating to the heat treatment of metals - Google Patents

Improvements in and relating to the heat treatment of metals

Info

Publication number
GB878686A
GB878686A GB32220/59A GB3222059A GB878686A GB 878686 A GB878686 A GB 878686A GB 32220/59 A GB32220/59 A GB 32220/59A GB 3222059 A GB3222059 A GB 3222059A GB 878686 A GB878686 A GB 878686A
Authority
GB
United Kingdom
Prior art keywords
furnace
workpieces
primary
gases
scale
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
GB32220/59A
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.)
INDUGAD GES fur IND GASVERWEN
Original Assignee
INDUGAD GES fur IND GASVERWEN
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 INDUGAD GES fur IND GASVERWEN filed Critical INDUGAD GES fur IND GASVERWEN
Publication of GB878686A publication Critical patent/GB878686A/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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)

Abstract

878,686. Metal heating furnaces. INDUGAS GESELLSCHAFT FUR INDUSTRIELLE GASUERWENDING. Sept. 22, 1959 [Oct. 29, 1958], No. 32220/59. Classes 51 (1) and 51 (2). In a furnace for heating metal workpieces without the formation of scale, the end 2 of the furnace at which the primary burners are located is of diffuser shape, and inclined secondary air inlet nozzles or burners 3 are arranged in an inclined part of the furnace roof. The velocities of the primary and secondary air and gas are selected so that the gases from the secondary combustion do not reach the workpieces 5 until they reach a part of the furnace where the temperature is too low for the formation of scale. The furnace roof is so shaped that the radiation from it is directed on to the workpieces 5 while they are enveloped by the gases from the primary combustion. Specification 606,401 is referred to.
GB32220/59A 1958-10-29 1959-09-22 Improvements in and relating to the heat treatment of metals Expired GB878686A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE878686X 1958-10-29

Publications (1)

Publication Number Publication Date
GB878686A true GB878686A (en) 1961-10-04

Family

ID=6818655

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32220/59A Expired GB878686A (en) 1958-10-29 1959-09-22 Improvements in and relating to the heat treatment of metals

Country Status (1)

Country Link
GB (1) GB878686A (en)

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