GB1173825A - Furnace Muffle - Google Patents

Furnace Muffle

Info

Publication number
GB1173825A
GB1173825A GB44407/67A GB4440767A GB1173825A GB 1173825 A GB1173825 A GB 1173825A GB 44407/67 A GB44407/67 A GB 44407/67A GB 4440767 A GB4440767 A GB 4440767A GB 1173825 A GB1173825 A GB 1173825A
Authority
GB
United Kingdom
Prior art keywords
welded
outer shell
depressions
shells
welding
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
GB44407/67A
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.)
BTU Engineering Corp
Original Assignee
BTU Engineering Corp
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 BTU Engineering Corp filed Critical BTU Engineering Corp
Publication of GB1173825A publication Critical patent/GB1173825A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/06—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
    • F27B9/08—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated heated through chamber walls
    • F27B9/082—Muffle furnaces
    • 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
    • C21D9/0043—Muffle furnaces; Retort furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/04—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere
    • F27B9/045—Furnaces with controlled atmosphere
    • F27B9/047—Furnaces with controlled atmosphere the atmosphere consisting of protective gases
    • 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
    • F27D9/00—Cooling of furnaces or of charges therein

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)

Abstract

1,173,825. Making furnace muffles; welding by fusion; brazing. BTU ENG. CORP. 29 Sept., 1967 [3 Oct., 1966], No. 44407/67. Headings B3A and B3R. [Also in Division F4] A fluid-jacketed furnace muffle is formed by bending sheets of stainless steel or other heatresistant metal to form an inner shell 16 and outer shell 22 with edge parts 20a, 20b and 24a, 24b. The shells are united by welding the four edges together by an arc process, a non- consumable electrode being used to form an arc in an inert atmosphere, e.g. helium. Depressions 38 formed in the outer shell are welded to the inner shell at poles in the bottom of the depressions. Inlet and outlet pipes for coolant are welded to the outer shell, and the ends of the spaces between the shells are closed by end plates welded to the jacket. The welds may be formed by a consumable wire process, or the join may be brazed.
GB44407/67A 1966-10-03 1967-09-29 Furnace Muffle Expired GB1173825A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US583842A US3410544A (en) 1966-10-03 1966-10-03 Furnace muffle

Publications (1)

Publication Number Publication Date
GB1173825A true GB1173825A (en) 1969-12-10

Family

ID=24334815

Family Applications (1)

Application Number Title Priority Date Filing Date
GB44407/67A Expired GB1173825A (en) 1966-10-03 1967-09-29 Furnace Muffle

Country Status (3)

Country Link
US (1) US3410544A (en)
DE (1) DE1583438B1 (en)
GB (1) GB1173825A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4298060A (en) * 1979-02-14 1981-11-03 Elliott Turbomachinery Limited Fluid jacket for a vessel
US4509588A (en) * 1982-05-20 1985-04-09 Deflecta-Shield Corporation Heat reclaimer
US4749298A (en) * 1987-04-30 1988-06-07 United Technologies Corporation Temperature resistant fastener arrangement
US4767324A (en) * 1987-05-26 1988-08-30 General Electric Company Transition section for muffle furnace
DE10163183A1 (en) * 2001-12-21 2003-07-03 Bsh Bosch Siemens Hausgeraete Cooking device muffle and method for producing a cooking device muffle
US6811145B2 (en) * 2002-05-07 2004-11-02 Edward L. Gibbs Barrier formed by resistance projection welding
US8523150B2 (en) 2004-03-15 2013-09-03 Edward L. Gibbs Fence with tiltable picket
US11761231B1 (en) 2004-03-15 2023-09-19 Ameristar Perimeter Security Usa Inc. Rail with brackets
EP3669821B1 (en) * 2018-12-17 2023-06-21 Ivoclar Vivadent AG Dental cooling method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US833640A (en) * 1905-01-19 1906-10-16 Incandescent Heat Co Ltd Muffle or furnace for annealing.
US1782234A (en) * 1928-12-31 1930-11-18 Otto U Hofmann Method of welding and the resultant product
US2391997A (en) * 1942-03-26 1946-01-01 Lilly Florence Shirley Noble Composite slab sheet or plate
US2602653A (en) * 1948-07-06 1952-07-08 Electric Furnace Co Bright strip annealing apparatus
US3058861A (en) * 1958-10-30 1962-10-16 Johns Manville Metal jacketed insulation
US3160403A (en) * 1961-09-25 1964-12-08 Hayes Inc C I Furnace construction and method of operating the construction

Also Published As

Publication number Publication date
DE1583438B1 (en) 1970-08-27
US3410544A (en) 1968-11-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee