GB816261A - A vacuum induction furnace - Google Patents
A vacuum induction furnaceInfo
- Publication number
- GB816261A GB816261A GB7111/57A GB711157A GB816261A GB 816261 A GB816261 A GB 816261A GB 7111/57 A GB7111/57 A GB 7111/57A GB 711157 A GB711157 A GB 711157A GB 816261 A GB816261 A GB 816261A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coils
- coil
- crucible
- centre
- generator
- 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
- 230000006698 induction Effects 0.000 title abstract 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 239000004020 conductor Substances 0.000 abstract 1
- 239000000498 cooling water Substances 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 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
- H05B6/06—Control, e.g. of temperature, of power
- H05B6/067—Control, e.g. of temperature, of power for melting 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
- H05B6/24—Crucible furnaces
- H05B6/26—Crucible furnaces using vacuum or particular gas atmosphere
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Abstract
816,261. Induction furnaces. NATIONAL RESEARCH CORPORATION. March 4, 1957 [April 2, 1956], No. 7111/57. Class 39(3) An induction vacuum furnace comprises two induction coils in parallel, one having half its turns 16 surrounding the upper part of the crucible 12 and its remaining turns 18 surrounding the lower part of the crucible, and the other coil being wound to surround a part of the crucible between the half coils. The half coils are connected to the centre coil at their inner ends, and are reverse wound with respect to the centre coil 15; the outer ends of the half coils are connected and are earthed, and the centre of the coil 15 may be earthed by means of a resistor. The coils may be of copper tubing which is water cooled. Power leads from a generator 40 pass through the furnace wall 10 via a coaxial assembly 26 mounted in an insulating bushing 38, connection being made to the centre coil by conductors 28, 36. Passages for the cooling water may be provided in the coaxial assembly 26. The generator may operate at 800 volts and at a frequency of 960 c.p.s. but the earthing provided for the coils ensures that no portion of either coil is at any time more than ¢ the generator voltage above earth. The arrangement of the coils avoids unbalance of the current in them when the crucible is half full by ensuring that the inductance is equal for both coils. Specification 689,726 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US816261XA | 1956-04-02 | 1956-04-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB816261A true GB816261A (en) | 1959-07-08 |
Family
ID=22165327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7111/57A Expired GB816261A (en) | 1956-04-02 | 1957-03-04 | A vacuum induction furnace |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB816261A (en) |
-
1957
- 1957-03-04 GB GB7111/57A patent/GB816261A/en not_active Expired
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