GB1214949A - Apparatus for heating a target in an electron beam furnace - Google Patents
Apparatus for heating a target in an electron beam furnaceInfo
- Publication number
- GB1214949A GB1214949A GB41551/68A GB4155168A GB1214949A GB 1214949 A GB1214949 A GB 1214949A GB 41551/68 A GB41551/68 A GB 41551/68A GB 4155168 A GB4155168 A GB 4155168A GB 1214949 A GB1214949 A GB 1214949A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polepieces
- beams
- electron
- crucible
- field
- 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
- 238000010894 electron beam technology Methods 0.000 title abstract 4
- 238000010438 heat treatment Methods 0.000 title 1
- 239000002826 coolant Substances 0.000 abstract 1
- 239000011344 liquid material Substances 0.000 abstract 1
- 239000012768 molten material Substances 0.000 abstract 1
- 238000005192 partition Methods 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
- 239000011343 solid material Substances 0.000 abstract 1
- 239000013077 target material Substances 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/30—Electron-beam or ion-beam tubes for localised treatment of objects
- H01J37/305—Electron-beam or ion-beam tubes for localised treatment of objects for casting, melting, evaporating, or etching
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Electron Sources, Ion Sources (AREA)
- Physical Vapour Deposition (AREA)
Abstract
1,214,949. Electron beam furnaces. AIR REDUCTION CO. Inc. 30 Aug., 1968 [13 Sept., 1967], No. 41551/68. Heading H1D. An electron beam furnace comprises an electron gun 16, Fig. 1, adapted to produce at least two electron beams and disposed in a compartment 14 separated from the compartment 13 containing the crucible 21 by an apertured partition 12, the two compartments being evacuated by separate pumps (not shown) to prevent vapours evolved from the target material 19 affecting the electron gun; the system is characterized by the provision adjacent the electron gun of two bowed magnetic fields 56 and 57, Fig. 3, produced by pairs of polepieces 34, 36 and 37, 38 energized by coils 39 and 41, and of a third opposing field produced by a coil 52. The fields 56 and 57 serve to focus and deflect the respective beams, whilst the coil 52 serves to establish a field 58 between the outer polepieces which causes the two beams 17 to converge, for example on the aperture 18, Fig. 1. Each electron source may comprise an elongate tungsten wire 42 or 43 disposed in a recess 44 or 47 in a negative shaping electrode 46 or 48 in front of which is arranged an earthed accelerating electrode 46a or 48a. After the beams pass through the aperture 18, Fig. 1, they pass between two quadrant shaped polepieces, of which one 26 is shown in Fig. 1; these polepieces are joined at the top by a low reluctance web 31 and by two coils (28 and 29, Fig. 2, not shown) which are separately energized to control the strength and direction of the field between the polepieces. This field focuses the beams in a vertical direction and may also be used to vary the longitudinal position of the impact area on the surface of the molten material 19 or to cause the beam to strike the end of the feedstock wire 23 which is fed by a mechanism not shown. The crucible 21 may be provided with coolant passages 22 for forming a layer of solid material between the liquid material and the crucible.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US66754667A | 1967-09-13 | 1967-09-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1214949A true GB1214949A (en) | 1970-12-09 |
Family
ID=24678647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB41551/68A Expired GB1214949A (en) | 1967-09-13 | 1968-08-30 | Apparatus for heating a target in an electron beam furnace |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3475542A (en) |
| BE (1) | BE720044A (en) |
| DE (1) | DE1790115B1 (en) |
| FR (1) | FR1578575A (en) |
| GB (1) | GB1214949A (en) |
| SE (1) | SE352508B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3622679A (en) * | 1970-09-29 | 1971-11-23 | Air Reduction | Heating system for electron beam furnace |
| US3655902A (en) * | 1970-10-19 | 1972-04-11 | Air Reduction | Heating system for electron beam furnace |
| US4891821A (en) * | 1989-03-27 | 1990-01-02 | Hanks Charles W | Magnetic correcting fence for adjacent e-guns |
| DE3929475A1 (en) * | 1989-09-05 | 1991-03-14 | Balzers Hochvakuum | METHOD AND DEVICE FOR DEFLECTING A RAY |
| CN113990722B (en) * | 2021-10-09 | 2024-05-10 | 杭州大和热磁电子有限公司 | Electron beam emission device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL225017A (en) * | 1957-02-19 | |||
| US2952791A (en) * | 1958-09-29 | 1960-09-13 | Bbc Brown Boveri & Cie | Electron beam lens |
| US3235647A (en) * | 1963-06-06 | 1966-02-15 | Temescal Metallurgical Corp | Electron bombardment heating with adjustable impact pattern |
| US3394217A (en) * | 1965-06-11 | 1968-07-23 | Air Reduction | Method and apparatus for controlling plural electron beams |
| US3388359A (en) * | 1967-01-31 | 1968-06-11 | Atomic Energy Commission Usa | Particle beam focussing magnet with a septum wall |
-
1967
- 1967-09-13 US US667546A patent/US3475542A/en not_active Expired - Lifetime
-
1968
- 1968-08-28 FR FR1578575D patent/FR1578575A/fr not_active Expired
- 1968-08-28 BE BE720044D patent/BE720044A/xx unknown
- 1968-08-30 GB GB41551/68A patent/GB1214949A/en not_active Expired
- 1968-09-12 SE SE12274/68A patent/SE352508B/xx unknown
- 1968-09-13 DE DE19681790115 patent/DE1790115B1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| SE352508B (en) | 1972-12-27 |
| DE1790115B1 (en) | 1971-07-15 |
| US3475542A (en) | 1969-10-28 |
| FR1578575A (en) | 1969-08-14 |
| BE720044A (en) | 1969-02-03 |
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