CA1245727A - Levitation heating using single variable frequency power supply - Google Patents
Levitation heating using single variable frequency power supplyInfo
- Publication number
- CA1245727A CA1245727A CA000498873A CA498873A CA1245727A CA 1245727 A CA1245727 A CA 1245727A CA 000498873 A CA000498873 A CA 000498873A CA 498873 A CA498873 A CA 498873A CA 1245727 A CA1245727 A CA 1245727A
- Authority
- CA
- Canada
- Prior art keywords
- coil
- heating
- frequency
- workpiece
- current
- 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
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 45
- 238000005339 levitation Methods 0.000 title claims abstract description 34
- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 4
- 230000003455 independent Effects 0.000 claims 1
- 230000006698 induction Effects 0.000 description 13
- 239000002184 metal Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000000155 melt Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000035515 penetration Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 210000003000 inclusion body Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
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
- H05B6/32—Arrangements for simultaneous levitation and heating
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Induction Heating (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US761,271 | 1985-08-01 | ||
| US06/761,271 US4578552A (en) | 1985-08-01 | 1985-08-01 | Levitation heating using single variable frequency power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1245727A true CA1245727A (en) | 1988-11-29 |
Family
ID=25061717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000498873A Expired CA1245727A (en) | 1985-08-01 | 1986-01-02 | Levitation heating using single variable frequency power supply |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4578552A (OSRAM) |
| JP (1) | JPS6235491A (OSRAM) |
| CA (1) | CA1245727A (OSRAM) |
| DE (1) | DE3604503A1 (OSRAM) |
| GB (1) | GB2178567A (OSRAM) |
Families Citing this family (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2197995B (en) * | 1986-11-25 | 1991-06-19 | Ti Creda Ltd | Improvements in or relating to induction heating circuits for cooking appliances |
| EP0294913A3 (en) * | 1987-06-12 | 1989-08-09 | Inductotherm Corp. | Polyphase power supply for continuous levitation casting |
| US4896849A (en) * | 1987-06-26 | 1990-01-30 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Sample levitation and melt in microgravity |
| JPH0254554A (ja) * | 1988-08-19 | 1990-02-23 | Fujitsu Ltd | 半導体装置およびその製造方法 |
| DE3833255A1 (de) * | 1988-09-30 | 1990-04-05 | Deutsche Forsch Luft Raumfahrt | Vorrichtung zum behaelterlosen positionieren und schmelzen von elektrisch leitenden materialien |
| DE3836239A1 (de) * | 1988-10-25 | 1990-04-26 | Deutsche Forsch Luft Raumfahrt | Vorrichtung zum behaelterlosen positionieren und schmelzen von elektrisch leitenden materialien |
| US5014769A (en) * | 1989-04-17 | 1991-05-14 | Inductotherm Corp. | Induction melting of metals without a crucible |
| JP2517550Y2 (ja) * | 1989-12-28 | 1996-11-20 | 神鋼電機株式会社 | 溶解炉への供給電力制御装置 |
| US5150272A (en) * | 1990-03-06 | 1992-09-22 | Intersonics Incorporated | Stabilized electromagnetic levitator and method |
| JPH0413088A (ja) * | 1990-04-27 | 1992-01-17 | Mitsubishi Electric Corp | リング電極型静電浮遊炉 |
| US5003551A (en) * | 1990-05-22 | 1991-03-26 | Inductotherm Corp. | Induction melting of metals without a crucible |
| US5319670A (en) * | 1992-07-24 | 1994-06-07 | The United States Of America As Represented By The United States Department Of Energy | Velocity damper for electromagnetically levitated materials |
| JP3398172B2 (ja) * | 1993-04-09 | 2003-04-21 | 電気興業株式会社 | 高周波誘導加熱における加熱温度制御方法及び高周波誘導加熱温度制御装置 |
| US5528620A (en) * | 1993-10-06 | 1996-06-18 | Fuji Electric Co., Ltd. | Levitating and melting apparatus and method of operating the same |
| US5374801A (en) * | 1993-11-15 | 1994-12-20 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Plasma heating for containerless and microgravity materials processing |
| US5461215A (en) * | 1994-03-17 | 1995-10-24 | Massachusetts Institute Of Technology | Fluid cooled litz coil inductive heater and connector therefor |
| WO1999031013A1 (en) | 1997-12-15 | 1999-06-24 | Advanced Silicon Materials, Inc. | Chemical vapor deposition system for polycrystalline silicon rod production |
| US6544333B2 (en) | 1997-12-15 | 2003-04-08 | Advanced Silicon Materials Llc | Chemical vapor deposition system for polycrystalline silicon rod production |
| US6727483B2 (en) | 2001-08-27 | 2004-04-27 | Illinois Tool Works Inc. | Method and apparatus for delivery of induction heating to a workpiece |
| US6956189B1 (en) | 2001-11-26 | 2005-10-18 | Illinois Tool Works Inc. | Alarm and indication system for an on-site induction heating system |
| US7015439B1 (en) | 2001-11-26 | 2006-03-21 | Illinois Tool Works Inc. | Method and system for control of on-site induction heating |
| US8038931B1 (en) | 2001-11-26 | 2011-10-18 | Illinois Tool Works Inc. | On-site induction heating apparatus |
| US6713737B1 (en) * | 2001-11-26 | 2004-03-30 | Illinois Tool Works Inc. | System for reducing noise from a thermocouple in an induction heating system |
| US20040084443A1 (en) * | 2002-11-01 | 2004-05-06 | Ulrich Mark A. | Method and apparatus for induction heating of a wound core |
| US6911089B2 (en) | 2002-11-01 | 2005-06-28 | Illinois Tool Works Inc. | System and method for coating a work piece |
| US20050230379A1 (en) * | 2004-04-20 | 2005-10-20 | Vianney Martawibawa | System and method for heating a workpiece during a welding operation |
| DE102017100836B4 (de) | 2017-01-17 | 2020-06-18 | Ald Vacuum Technologies Gmbh | Gießverfahren |
| DE102018109592A1 (de) | 2018-04-20 | 2019-10-24 | Ald Vacuum Technologies Gmbh | Schwebeschmelzverfahren |
| DE102018117302A1 (de) | 2018-07-17 | 2020-01-23 | Ald Vacuum Technologies Gmbh | Schwebeschmelzverfahren mit einem ringförmigen Element |
| DE102018117300B3 (de) * | 2018-07-17 | 2019-11-14 | Ald Vacuum Technologies Gmbh | Schwebeschmelzverfahren mit beweglichen Induktionseinheiten |
| DE102018117304A1 (de) | 2018-07-17 | 2020-01-23 | Ald Vacuum Technologies Gmbh | Vorrichtung und Verfahren zum Schwebeschmelzen mit gekippt angeordneten Induktionseinheiten |
| WO2025093146A1 (en) | 2023-10-31 | 2025-05-08 | University Of Latvia | A technique for replenishing molten, levitating material by growing monocrystalline, polycrystalline, or other solid-state structures under electromagnetic levitation conditions |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1642198A (en) * | 1927-02-18 | 1927-09-13 | Lorenz C Ag | High-frequency furnace circuit |
| US2686864A (en) * | 1951-01-17 | 1954-08-17 | Westinghouse Electric Corp | Magnetic levitation and heating of conductive materials |
| US2664496A (en) * | 1952-11-25 | 1953-12-29 | Westinghouse Electric Corp | Apparatus for the magnetic levitation and heating of conductive materials |
| US2957064A (en) * | 1958-09-30 | 1960-10-18 | Westinghouse Electric Corp | Stabilizing of levitation melting |
| US3354285A (en) * | 1964-04-17 | 1967-11-21 | Union Carbide Corp | Electromagnetic flux concentrator for levitation and heating |
-
1985
- 1985-08-01 US US06/761,271 patent/US4578552A/en not_active Expired - Lifetime
- 1985-12-24 GB GB08531808A patent/GB2178567A/en not_active Withdrawn
-
1986
- 1986-01-02 CA CA000498873A patent/CA1245727A/en not_active Expired
- 1986-01-10 JP JP61002304A patent/JPS6235491A/ja active Granted
- 1986-02-13 DE DE19863604503 patent/DE3604503A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| US4578552A (en) | 1986-03-25 |
| GB8531808D0 (en) | 1986-02-05 |
| JPS6310557B2 (OSRAM) | 1988-03-08 |
| JPS6235491A (ja) | 1987-02-16 |
| GB2178567A (en) | 1987-02-11 |
| DE3604503A1 (de) | 1987-02-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |