GB1332034A - Apparatus for refining a product by zone melting - Google Patents

Apparatus for refining a product by zone melting

Info

Publication number
GB1332034A
GB1332034A GB185971A GB185971A GB1332034A GB 1332034 A GB1332034 A GB 1332034A GB 185971 A GB185971 A GB 185971A GB 185971 A GB185971 A GB 185971A GB 1332034 A GB1332034 A GB 1332034A
Authority
GB
United Kingdom
Prior art keywords
coil
ingot
coils
boat
ring
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
GB185971A
Inventor
Jean-Marie Jacquerie
George Defosse
Paul Lams
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.)
Elphiac SA
Original Assignee
Elphiac 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
Application filed by Elphiac SA filed Critical Elphiac SA
Publication of GB1332034A publication Critical patent/GB1332034A/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
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/101—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces
    • H05B6/102—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces the metal pieces being rotated while induction heated
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B13/00—Single-crystal growth by zone-melting; Refining by zone-melting
    • C30B13/16—Heating of the molten zone
    • C30B13/20—Heating of the molten zone by induction, e.g. hot wire technique
    • 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
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/101—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces
    • 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
    • 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
    • H05B6/24—Crucible furnaces
    • 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
    • H05B6/30—Arrangements for remelting or zone melting

Landscapes

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

Abstract

1332034 Zone-melting apparatus ELPHIAC SA 14 Jan 1971 [14 Jan 1970 8 July 1970] 1859/71 Heading BIS In apparatus, in which two or more inductive heating coils 7, 8 are moved in unison over an ingot 1, in a refractory boat 2, means are provided for adjustably weakening the magnetic field of the trailing coil, so that the sizes of the molten zones under each coil are the same. A greater heat output is required from the leading coil as this has to heat the -ingot up from cold. As shown, a short circuit ring 9 weakens the magnetic field of the trailing coil 8. When the direction of motion of the coils 7, 8 is reversed, adjustment means 10 is used to bring ring 9 nearer to coil 7. The ring and coils may be water-cooled. An aluminium ingot may be refined, in a graphite boat 2, in an atmosphere of argon, in a quartz tube 4. The boat 2 is supported on hollow water-cooled stainless steel rails 3 held under tension.
GB185971A 1970-01-14 1971-01-14 Apparatus for refining a product by zone melting Expired GB1332034A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE744394A BE744394A (en) 1970-01-14 1970-01-14 Zone refining process
BE753738 1970-07-08

Publications (1)

Publication Number Publication Date
GB1332034A true GB1332034A (en) 1973-10-03

Family

ID=25656789

Family Applications (1)

Application Number Title Priority Date Filing Date
GB185971A Expired GB1332034A (en) 1970-01-14 1971-01-14 Apparatus for refining a product by zone melting

Country Status (7)

Country Link
US (1) US3762912A (en)
BE (1) BE744394A (en)
CA (1) CA928082A (en)
DE (1) DE2101653A1 (en)
FR (1) FR2076089A1 (en)
GB (1) GB1332034A (en)
SE (1) SE380734B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4447690A (en) * 1981-12-28 1984-05-08 Selas Corporation Of America Inductive preheating of upset tubing
US5034586A (en) * 1990-05-03 1991-07-23 Ajax Magnethermic Corporation Induction heating assembly including an interposed closed conductive loop for suppression of intercoil coupling
EP1191948A2 (en) * 1999-06-11 2002-04-03 Neorx Corporation High dose radionuclide complexes for bone marrow suppression
JP4545899B2 (en) * 2000-07-31 2010-09-15 キヤノン株式会社 Heating apparatus and image forming apparatus
US7466740B2 (en) * 2005-12-07 2008-12-16 Ajax Tocco Magnethermic Corporation Induction coil having internal and external faradic rings

Also Published As

Publication number Publication date
DE2101653A1 (en) 1971-07-22
FR2076089A1 (en) 1971-10-15
BE744394A (en) 1970-07-14
US3762912A (en) 1973-10-02
SE380734B (en) 1975-11-17
CA928082A (en) 1973-06-12

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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