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GB1043397A - Improvements in and relating to electron beam melting furnaces - Google Patents

Improvements in and relating to electron beam melting furnaces

Info

Publication number
GB1043397A
GB1043397A GB3194863A GB3194863A GB1043397A GB 1043397 A GB1043397 A GB 1043397A GB 3194863 A GB3194863 A GB 3194863A GB 3194863 A GB3194863 A GB 3194863A GB 1043397 A GB1043397 A GB 1043397A
Authority
GB
United Kingdom
Prior art keywords
chamber
gas
electron
ions
anode
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
GB3194863A
Inventor
Manfred Von Ardenne
Siegfried Schiller
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.)
LOKOMOTIVBAU ELEKTROTECH
Original Assignee
LOKOMOTIVBAU ELEKTROTECH
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
Priority to BE637889D priority Critical patent/BE637889A/xx
Priority to NL296714D priority patent/NL296714A/xx
Priority to DEA43571A priority patent/DE1176771B/en
Application filed by LOKOMOTIVBAU ELEKTROTECH filed Critical LOKOMOTIVBAU ELEKTROTECH
Priority to GB3194863A priority patent/GB1043397A/en
Priority to FR948028A priority patent/FR1380537A/en
Publication of GB1043397A publication Critical patent/GB1043397A/en
Expired legal-status Critical Current

Links

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
    • H01J37/301—Arrangements enabling beams to pass between regions of different pressure
    • 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
    • H01J37/02—Details
    • H01J37/21—Means for adjusting the focus
    • 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
    • H01J37/3002—Details
    • H01J37/3007—Electron or ion-optical systems
    • 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

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Electron Sources, Ion Sources (AREA)

Abstract

1,043,397. Electron beam apparatus. VEB. LOKOMOTIVBAU ELEKTROTECHNISCHE WERKE HANS BEIMLER. Aug. 13, 1963, No. 31948/63. Heading H1D. A gas focused electron beam melting furnace includes an electron gun arranged to fire a beam through a chamber in which the gas pressure is higher than that along the beam path on either side of the chamber, and in which ions generated by the beam are exhausted from the chamber along the beam path both in and counter to the direction of the beam, whereby to reduce beam spread by compensating the space charge of the beam. The beam from an electron gun 2, having cathode 1, focusing electrode 3, and anode 4, is focused by coils 7 and 18, and is directed through an intermediate chamber 10, and a chamber 15 having a gas inlet 17, on to a workpiece 22 in a melting chamber 21, the communicating passages 9, 13, and 19 being of reduced cross-section to impede gas flow therethrough. Gas supply 17 and vacuum pumps connected at 6, 11, and 16, maintain a maximum pressure of argon in chamber 15, the beam producing a plasma 14 therein; the withdrawal of the plasma ions through passages 13 and 19 may be further promoted by the use of ring electrodes 12 and 20. Electrode 8, which may be either positive or negative with respect to the anode, prevents ions from passing into the gun 2. Dimensions and operating values are given.
GB3194863A 1963-07-13 1963-08-13 Improvements in and relating to electron beam melting furnaces Expired GB1043397A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE637889D BE637889A (en) 1963-08-13
NL296714D NL296714A (en) 1963-08-13
DEA43571A DE1176771B (en) 1963-07-13 1963-07-13 Focusing aid for electron beam furnaces and methods for their execution
GB3194863A GB1043397A (en) 1963-08-13 1963-08-13 Improvements in and relating to electron beam melting furnaces
FR948028A FR1380537A (en) 1963-08-13 1963-09-19 Large capacity electron beam melting furnace with focusing aid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3194863A GB1043397A (en) 1963-08-13 1963-08-13 Improvements in and relating to electron beam melting furnaces

Publications (1)

Publication Number Publication Date
GB1043397A true GB1043397A (en) 1966-09-21

Family

ID=10330770

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3194863A Expired GB1043397A (en) 1963-07-13 1963-08-13 Improvements in and relating to electron beam melting furnaces

Country Status (3)

Country Link
BE (1) BE637889A (en)
GB (1) GB1043397A (en)
NL (1) NL296714A (en)

Also Published As

Publication number Publication date
BE637889A (en)
NL296714A (en)

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