US3820586A - Apparatus for sweeping the beam from a plasma electron gun on the surface of a mold of a continuous ingot casting device - Google Patents

Apparatus for sweeping the beam from a plasma electron gun on the surface of a mold of a continuous ingot casting device Download PDF

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Publication number
US3820586A
US3820586A US00304800A US30480072A US3820586A US 3820586 A US3820586 A US 3820586A US 00304800 A US00304800 A US 00304800A US 30480072 A US30480072 A US 30480072A US 3820586 A US3820586 A US 3820586A
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US
United States
Prior art keywords
mold
guns
electron gun
ingot
plasma electron
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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 - Lifetime
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US00304800A
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English (en)
Inventor
H Takei
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.)
Ulvac Inc
CULVAC CORP
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Ulvac Inc
CULVAC CORP
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Publication date
Application filed by Ulvac Inc, CULVAC CORP filed Critical Ulvac Inc
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Publication of US3820586A publication Critical patent/US3820586A/en
Assigned to ULVAC JAPAN, LTD., reassignment ULVAC JAPAN, LTD., CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: NIHON SHINKA GIJUTSU KABUSHIKI, KAISHA
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D23/00—Casting processes not provided for in groups B22D1/00 - B22D21/00
    • B22D23/06—Melting-down metal, e.g. metal particles, in the mould
    • B22D23/10—Electroslag casting

Definitions

  • the bottom plate of the mold is gradually lowered whereby there is obtained on the bottom plate a gradually solidified rectangular pillar-shaped ingot.
  • the plasma electron gun is oscillated by a power source, such as a hydraulic cylinder so that the beam from the electron gun is reciprocated over the upper surface of the material in the mold whereby the temperature at the upper surface of the material can be made substantially uniform.
  • This invention relates to a plasma electron gun arrangement in apparatus for the continuous manufacture of an ingot and more particularly-to such gun arrangement for complete irradiation of the upper surface of material in amold.
  • An object of the invention is to provide an apparatus which is free from the foregoing unfavorable result.
  • an improvement comprising means for reciprocally moving the plasma electron gun by amotive'source such as a hydraulic cylinder orthe like,- so that the beam irradiation by the electron gun may be substantially equalized over the entire upper surface of the material.
  • Numeral 1 denotes a vacuum chamber which is evacuated by a vacuum pump (not illustrated). Within this vacuum chamber 1 there are disposed a hopper 2 for supplying a main raw material and a hopper 3 for supplying an additiveraw material. The hoppers 2 and 3 are provided with respective measuring devices 4 and 5 at their lower outlet ends. Below the hoppers 2 and 3 are respective conveyers 6, 7, which supply the respective materials to a common conveyer 8 which feeds the material through a guide 9 to a water-cooled mold l0.
  • a hollow hot cathode type plasma electron gun 11 is mounted above the guide 9 to melt the material therein and a hollow hot cathode plasma electron gun 12 is mounted above the mold 10 to maintain the material in molten state therein.
  • the mold I0 is composed of a stationary rectangular side frame 10a and a movable bottom plate 101;.
  • the raw materials supplied to the conveyers 6, 7 from the respective hoppers 2, 3 are supplied by the conveyer 8 into the guide 9, while being mixed together, and are heated and melted by the plasma electron gun 11 so as to be de-gasified and refined, the resultant molten material then being charged into the mold 10.
  • the upper surface of the molten material is heated by electron gun 12 thereby insuring that the material is molten thereat.
  • the bottom plate 10b of the mold is lowered at the same rate that the molten material is gradually solidified so that a solid rectangular ingot is continuously formed on the bottom plate 10b.
  • Numerals l3 and 14 denote electric sources for operating the electron guns ll, 12 respectively
  • numeral l5 denotes a carrier gas supply system
  • numeral l9 denotes a solenoid coil.
  • the above described structure is substantially conventional and, in lieu of a single gun, pluralities of plasma electron guns ll, 12 may be provided.
  • pluralities of plasma electron guns ll, 12 may be provided.
  • beam irradiation is effected over three circular areas as shown in FIG. 4, and nonirradiated surface portions remain therebetween. This is not desirable and this invention seeks to remove this disadvantage.
  • each electron gun 12 is pivotably supported at a middle portion 16 thereof and the upper portions of the guns are connected in common by a connecting rod 17 to a motive or power source 18 such as piston of a common hydraulic cylinder.
  • a motive or power source 18 such as piston of a common hydraulic cylinder.
  • the plasma electron gun facing the upper surface of the mold is so displaced that the effective area of the irradiation beam is reciprocated over the surface of the ingot so that it becomes possible for the upper surface of the forming ingot to be subjected to uniform irradiation over the entire surface thereof.
  • a plurality of plasma electron guns being mounted above the mold to supply heat to the upper surface of the molten material in the mold, an improvement comprising means supporting the plasma electron guns for relative movement with respect to the mold so that the radiation beams from the guns can travel along the upper surface of the material in the mold, and power means for moving the guns in concert to effect reciprocal movement of the beams on said upper surface of the material in the mold; said means which supports the guns including a pivotal connection for each cal paths.
  • cover sheet I 73 should read Nihoh Shinku Gijutsu Kabushiki Kaisha (Ulvac Corporation in g 5 Kan agawa-ken, Japan L Signed and sealed this 26th day of November 19%.,

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Toxicology (AREA)
  • Plasma & Fusion (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Continuous Casting (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Electron Sources, Ion Sources (AREA)
US00304800A 1971-11-08 1972-11-08 Apparatus for sweeping the beam from a plasma electron gun on the surface of a mold of a continuous ingot casting device Expired - Lifetime US3820586A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46088263A JPS522371B2 (enExample) 1971-11-08 1971-11-08

Publications (1)

Publication Number Publication Date
US3820586A true US3820586A (en) 1974-06-28

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ID=13937983

Family Applications (1)

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US00304800A Expired - Lifetime US3820586A (en) 1971-11-08 1972-11-08 Apparatus for sweeping the beam from a plasma electron gun on the surface of a mold of a continuous ingot casting device

Country Status (3)

Country Link
US (1) US3820586A (enExample)
JP (1) JPS522371B2 (enExample)
DE (1) DE2254642A1 (enExample)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981002430A1 (fr) * 1980-02-27 1981-09-03 Elektrosvarki Inst Patona Procede et dispositif de refusion au moyen d'un arc au plasma de la couche de surface d'une piece a usiner metallique plate possedant des bords paralleles
US4612973A (en) * 1984-08-31 1986-09-23 Northeastern University Cold-hearth melt-spinning apparatus for providing continuous casting of refractory and reactive alloys
US4627148A (en) * 1983-12-07 1986-12-09 Hitachi, Ltd. Method of producing high-purity metal member
FR2603506A1 (fr) * 1987-05-05 1988-03-11 Inst Elektroswarki Patona Installation pour la refusion au plasma de la couche superficielle de lingots metalliques
EP0289116A1 (en) * 1987-03-04 1988-11-02 Westinghouse Electric Corporation Method and device for casting powdered materials
US4794979A (en) * 1984-06-15 1989-01-03 Mcdonnell Douglas Corporation Method for melting metal, particularly scrap, and forming metal billets
US4884625A (en) * 1982-01-14 1989-12-05 Paton Boris E Method of the plasma jet remelting of a surface layer of a flat metal work having parallel side edges and apparatus for carrying out the method
US5273102A (en) * 1991-06-05 1993-12-28 General Electric Company Method and apparatus for casting an electron beam melted metallic material in ingot form
EP3015191A4 (en) * 2013-06-27 2017-03-01 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Continuous casting apparatus for ingots obtained from titanium or titanium alloy

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5273101A (en) * 1991-06-05 1993-12-28 General Electric Company Method and apparatus for casting an arc melted metallic material in ingot form

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981002430A1 (fr) * 1980-02-27 1981-09-03 Elektrosvarki Inst Patona Procede et dispositif de refusion au moyen d'un arc au plasma de la couche de surface d'une piece a usiner metallique plate possedant des bords paralleles
AT381055B (de) * 1980-02-27 1986-08-25 Inst Elektroswarki Patona Verfahren zum plasmalichtbogenumschmelzen der oberflaechenschicht eines flachen metallwerkstueckes mit gleichlaufenden seitenkanten sowie anlage zur durchfuehrung des verfahrens
US4884625A (en) * 1982-01-14 1989-12-05 Paton Boris E Method of the plasma jet remelting of a surface layer of a flat metal work having parallel side edges and apparatus for carrying out the method
US4627148A (en) * 1983-12-07 1986-12-09 Hitachi, Ltd. Method of producing high-purity metal member
US4794979A (en) * 1984-06-15 1989-01-03 Mcdonnell Douglas Corporation Method for melting metal, particularly scrap, and forming metal billets
US4612973A (en) * 1984-08-31 1986-09-23 Northeastern University Cold-hearth melt-spinning apparatus for providing continuous casting of refractory and reactive alloys
EP0289116A1 (en) * 1987-03-04 1988-11-02 Westinghouse Electric Corporation Method and device for casting powdered materials
FR2603506A1 (fr) * 1987-05-05 1988-03-11 Inst Elektroswarki Patona Installation pour la refusion au plasma de la couche superficielle de lingots metalliques
US5273102A (en) * 1991-06-05 1993-12-28 General Electric Company Method and apparatus for casting an electron beam melted metallic material in ingot form
EP3015191A4 (en) * 2013-06-27 2017-03-01 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Continuous casting apparatus for ingots obtained from titanium or titanium alloy
US10022784B2 (en) 2013-06-27 2018-07-17 Kobe Steel, Ltd. Continuous casting method for ingots obtained from titanium or titanium alloy

Also Published As

Publication number Publication date
JPS522371B2 (enExample) 1977-01-21
JPS4852634A (enExample) 1973-07-24
DE2254642A1 (de) 1973-05-30

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AS Assignment

Owner name: ULVAC JAPAN, LTD.,

Free format text: CHANGE OF NAME;ASSIGNOR:NIHON SHINKA GIJUTSU KABUSHIKI, KAISHA;REEL/FRAME:004833/0631