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GB1122151A - High-frequency electric induction furnace - Google Patents

High-frequency electric induction furnace

Info

Publication number
GB1122151A
GB1122151A GB5511065A GB5511065A GB1122151A GB 1122151 A GB1122151 A GB 1122151A GB 5511065 A GB5511065 A GB 5511065A GB 5511065 A GB5511065 A GB 5511065A GB 1122151 A GB1122151 A GB 1122151A
Authority
GB
United Kingdom
Prior art keywords
crystal
induction furnace
dec
melt
frequency electric
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
GB5511065A
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.)
Societe Europeenne des Produits Refractaires SAS
Original Assignee
Electro Refractaire SA
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
Priority claimed from FR234A external-priority patent/FR1430192A/en
Priority claimed from FR233A external-priority patent/FR1427905A/en
Priority claimed from FR24198A external-priority patent/FR88911E/en
Application filed by Electro Refractaire SA filed Critical Electro Refractaire SA
Publication of GB1122151A publication Critical patent/GB1122151A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/22—Furnaces without an endless core
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/653—Processes involving a melting step
    • 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
    • F27B14/00—Crucible or pot furnaces
    • F27B14/04—Crucible or pot furnaces adapted for treating the charge in vacuum or special atmosphere
    • 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
    • F27B14/00—Crucible or pot furnaces
    • F27B14/06—Crucible or pot furnaces heated electrically, e.g. induction crucible furnaces with or without any other source of heat
    • 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
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/06—Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
    • H02H11/006—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of too high or too low voltage
    • H02H11/007—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of too high or too low voltage involving automatic switching for adapting the protected apparatus to the supply voltage

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Power Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Furnace Details (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

1,122,151. Crystal pulling. L'ELECTROREFRACTAIRE. 29 Dec., 1965 [29 Dec., 1964; 9 July, 1965], No. 55110/65. Heading B1S [Also in Division H5] Crystal-pulling apparatus comprises an induction furnace consisting of a hollow cylindrical member 1 which forms both a crucible for the melt and a single-turn induction coil. It is directly connected to a source of highfrequency current and also to conduits for circulation of cooling fluid. A crystal 18 of e.g. alumina, silica, magnesia is pulled from the melt by means of a rod 16 which is raised and rotated by means of a mechanism 13, 14, 15. The whole apparatus is enclosed in a vessel 19 of e.g. refractory glass into which an inert gas may be introduced. The specification refers to the preparation of a single crystal of alumina containing a small quantity of chromium.
GB5511065A 1964-12-29 1965-12-29 High-frequency electric induction furnace Expired GB1122151A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR234A FR1430192A (en) 1964-12-29 1964-12-29 Electric high frequency induction furnace
FR233A FR1427905A (en) 1964-12-29 1964-12-29 High frequency electric induction heating and melting process
FR24198A FR88911E (en) 1965-07-09 1965-07-09 Electric high frequency induction furnace

Publications (1)

Publication Number Publication Date
GB1122151A true GB1122151A (en) 1968-07-31

Family

ID=27241827

Family Applications (2)

Application Number Title Priority Date Filing Date
GB5391665A Expired GB1120648A (en) 1964-12-29 1965-12-20 Improvements in processes for heating and melting by high frequency electrical induction
GB5511065A Expired GB1122151A (en) 1964-12-29 1965-12-29 High-frequency electric induction furnace

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB5391665A Expired GB1120648A (en) 1964-12-29 1965-12-20 Improvements in processes for heating and melting by high frequency electrical induction

Country Status (5)

Country Link
BE (2) BE673541A (en)
CH (2) CH439518A (en)
DE (1) DE1519747B2 (en)
GB (2) GB1120648A (en)
NL (2) NL6516634A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004047495A1 (en) * 2002-11-15 2004-06-03 Liquid Ceramics Technology Pty Ltd Method and apparatus for heating refractory oxides
DE102010047690A1 (en) 2010-10-06 2012-04-12 Vsm-Vereinigte Schmirgel- Und Maschinen-Fabriken Ag A method of making zirconia reinforced alumina abrasive grains and abrasive grains produced thereby
CN113446848B (en) * 2020-03-24 2022-03-29 中国科学院金属研究所 Method for melting kilogram-level oxide and metal powder mixture at ultrahigh temperature

Also Published As

Publication number Publication date
NL6516634A (en) 1966-06-30
CH453519A (en) 1968-06-14
CH439518A (en) 1967-07-15
GB1120648A (en) 1968-07-24
NL6517050A (en) 1966-06-30
DE1519747A1 (en) 1970-02-26
BE673541A (en) 1966-06-09
DE1519747B2 (en) 1972-03-16
BE674148A (en) 1966-04-15

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