GB1372798A - Induction heating coils - Google Patents

Induction heating coils

Info

Publication number
GB1372798A
GB1372798A GB5121472A GB5121472A GB1372798A GB 1372798 A GB1372798 A GB 1372798A GB 5121472 A GB5121472 A GB 5121472A GB 5121472 A GB5121472 A GB 5121472A GB 1372798 A GB1372798 A GB 1372798A
Authority
GB
United Kingdom
Prior art keywords
coil
aluminium
silver
induction heating
nov
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
GB5121472A
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB1372798A publication Critical patent/GB1372798A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Abstract

1372798 Induction heating coil SIEMENS AG 7 Nov 1972 [24 Nov 1971] 51214/72 Heading H5H To prevent spark overs, a single or multiturn induction heating coil 1 for zone melting semiconductor rods is made at least in part of aluminium tubing provided with an electrically insulating external coating. As shown, the ends 2, 3 of the aluminium coil 1 are secured in vacuum-tight manner by aluminium solder in respective bores 4, 5 in aluminium connection elements 6, 7 respectively. Thereafter the coil 1 is anodically oxidized to provide an aluminium oxide layer of 10-200 Á thickness. This assembly is connected to a silver plated brass coil holder. In Fig. 2, not shown, the coil is anodically oxidized before it is connected, by non-coated ends, to a silver connection elements. A tight fitting steel cylinder is fitted within each coil end to improve heat dissipation during soldering the end by tin solder, into a bore in its silver connection element. The steel cylinder is removed and the assembly connected to a silver-plated brass coil holder. The zone melting process is carried out in a vacuum or in hydrogen, argon or other inert gas.
GB5121472A 1971-11-24 1972-11-07 Induction heating coils Expired GB1372798A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2158274A DE2158274A1 (en) 1971-11-24 1971-11-24 INDUCTION HEATING COIL FOR CRUCIBLE-FREE ZONE MELTING OF BARS MADE OF SEMICONDUCTOR MATERIAL

Publications (1)

Publication Number Publication Date
GB1372798A true GB1372798A (en) 1974-11-06

Family

ID=5826017

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5121472A Expired GB1372798A (en) 1971-11-24 1972-11-07 Induction heating coils

Country Status (7)

Country Link
US (1) US3801769A (en)
JP (1) JPS5241894B2 (en)
DE (1) DE2158274A1 (en)
FR (1) FR2160901B1 (en)
GB (1) GB1372798A (en)
IT (1) IT971048B (en)
NL (1) NL7212781A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2331004C3 (en) * 1973-06-18 1982-02-04 Siemens AG, 1000 Berlin und 8000 München Induction heating coil for crucible-free zone melting
DE4142245A1 (en) * 1991-12-17 1993-06-24 Tro Transformatoren Und Schalt Inductor insulation mfr. used for induction heating - sand-blasts surface to roughen it, melts aluminium-oxide powder coating with plasma beam, and covers with silicon@ lacquer
JP2006169060A (en) * 2004-12-17 2006-06-29 Shin Etsu Handotai Co Ltd Apparatus and method for manufacturing single crystal
DE102005060391B4 (en) * 2004-12-17 2012-02-16 Shin-Etsu Handotai Co., Ltd. An apparatus for producing a single crystal and a method for producing a single crystal
JP5505365B2 (en) * 2011-04-28 2014-05-28 信越半導体株式会社 Insulating member for preventing discharge in induction heating coil, single crystal manufacturing apparatus and single crystal manufacturing method using the same
US20130168146A1 (en) * 2011-12-28 2013-07-04 Jin-San Kim Metal terminal block adapted for surface mounting and method of mounting the same
ES2736074A1 (en) * 2018-06-21 2019-12-23 Bsh Electrodomesticos Espana Sa Induction cooking device (Machine-translation by Google Translate, not legally binding)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR872340A (en) * 1941-01-15 1942-06-04 Forges Ateliers Const Electr New method of insulation applicable in particular to machines and electrical devices
US2446202A (en) * 1941-09-24 1948-08-03 Vang Alfred Induction heat-treatment
DE1226984B (en) * 1959-05-14 1966-10-20 Siemens Ag Device for crucible-free zone melting of semiconductor rods
FR1280493A (en) * 1961-02-21 1961-12-29 Anaconda Aluminium Company Electric windings in aluminum tape
US3363079A (en) * 1965-02-15 1968-01-09 Black Clawson Co Induction heating
US3403241A (en) * 1966-08-22 1968-09-24 Ohio Crankshaft Co Induction heating element
US3488236A (en) * 1966-12-22 1970-01-06 Beaver Precision Prod Method and apparatus for heat treating a metallic workpiece

Also Published As

Publication number Publication date
DE2158274A1 (en) 1973-05-30
NL7212781A (en) 1973-05-28
JPS4860333A (en) 1973-08-24
IT971048B (en) 1974-04-30
FR2160901B1 (en) 1976-08-20
JPS5241894B2 (en) 1977-10-21
FR2160901A1 (en) 1973-07-06
US3801769A (en) 1974-04-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees