GB1003530A - Improvements in or relating to electron-beam melting methods and apparatus - Google Patents

Improvements in or relating to electron-beam melting methods and apparatus

Info

Publication number
GB1003530A
GB1003530A GB2356962A GB2356962A GB1003530A GB 1003530 A GB1003530 A GB 1003530A GB 2356962 A GB2356962 A GB 2356962A GB 2356962 A GB2356962 A GB 2356962A GB 1003530 A GB1003530 A GB 1003530A
Authority
GB
United Kingdom
Prior art keywords
molten metal
level
zone
detectors
june
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
GB2356962A
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.)
WC Heraus GmbH and Co KG
Original Assignee
WC Heraus GmbH and Co KG
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 WC Heraus GmbH and Co KG filed Critical WC Heraus GmbH and Co KG
Publication of GB1003530A publication Critical patent/GB1003530A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/22—Remelting metals with heating by wave energy or particle radiation
    • C22B9/228—Remelting metals with heating by wave energy or particle radiation by particle radiation, e.g. electron beams
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/288—X-rays; Gamma rays or other forms of ionising radiation
    • G01F23/2885—X-rays; Gamma rays or other forms of ionising radiation for discrete levels
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
    • G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means
    • 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)
  • Chemical & Material Sciences (AREA)
  • Electromagnetism (AREA)
  • Plasma & Fusion (AREA)
  • General Physics & Mathematics (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Automation & Control Theory (AREA)
  • Fluid Mechanics (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

1,003,530. Determining molten metal level in a furnace. W.C.HERAEUS G.m.b.H. June 19, 1962 [June 19, 1961], No. 23569/62. Heading G1A. [Also in Division H1] In an electron beam smelting furnace, a radiation detector 20a e.g. a thermocouple or a photo-cell, is arranged to receive radiation from a predetermined zone 22b of crucible 8 immediately above the required maximum height of molten metal 12 therein, so that when the melt reaches this zone an electrical signal is produced and may be used to adjust automatically the lowering speed of the crucible base 14, to maintain the melt level constant. As shown, a further radiation detector 20b is arranged to receive radiation from a zone 22a below the required level of molten metal, to produce a signal which may be used to reduce or even reverse the action of a motor 18 which effects movement of crucible base 14, when the level of molten metal is too low. The detectors 20a 20b are arranged in tubes provided with cooled diaphragms 21 which prevent condensation of metal vapour on the detectors.
GB2356962A 1961-06-19 1962-06-19 Improvements in or relating to electron-beam melting methods and apparatus Expired GB1003530A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH42893A DE1152770B (en) 1961-06-19 1961-06-19 Method for operating an electron beam melting plant and an electron beam melting plant

Publications (1)

Publication Number Publication Date
GB1003530A true GB1003530A (en) 1965-09-02

Family

ID=7155016

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2356962A Expired GB1003530A (en) 1961-06-19 1962-06-19 Improvements in or relating to electron-beam melting methods and apparatus

Country Status (3)

Country Link
DE (1) DE1152770B (en)
FR (1) FR1323043A (en)
GB (1) GB1003530A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117737461A (en) * 2023-12-20 2024-03-22 沈阳真空技术研究所有限公司 Automatic ingot pulling control method based on visual liquid level detection

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3923899A1 (en) * 1989-07-19 1991-01-31 Leybold Ag METHOD FOR REGULATING THE HIT POSITIONS OF SEVERAL ELECTRON BEAMS ON A MOLT BATH

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117737461A (en) * 2023-12-20 2024-03-22 沈阳真空技术研究所有限公司 Automatic ingot pulling control method based on visual liquid level detection

Also Published As

Publication number Publication date
DE1152770B (en) 1963-08-14
FR1323043A (en) 1963-04-05
DE1152770C2 (en) 1964-02-27

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