GB866106A - Improved arc working process and apparatus - Google Patents

Improved arc working process and apparatus

Info

Publication number
GB866106A
GB866106A GB20417/57A GB2041757A GB866106A GB 866106 A GB866106 A GB 866106A GB 20417/57 A GB20417/57 A GB 20417/57A GB 2041757 A GB2041757 A GB 2041757A GB 866106 A GB866106 A GB 866106A
Authority
GB
United Kingdom
Prior art keywords
arc
nozzle
crucible
electrode
gas
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
GB20417/57A
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.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
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 Union Carbide Corp filed Critical Union Carbide Corp
Publication of GB866106A publication Critical patent/GB866106A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00Heating by electric discharge
    • H05B7/02Details
    • H05B7/06Electrodes
    • H05B7/08Electrodes non-consumable
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00Heating by electric discharge
    • H05B7/02Details
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/08Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces heated electrically, with or without any other source of heat
    • F27B3/085Arc furnaces
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00Heating by electric discharge

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Discharge Heating (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Arc Welding In General (AREA)

Abstract

866,106. Arc melting furnaces. UNION CARBIDE CORPORATION. June 28, 1957 [June 29, 1956], No. 20417/57. Class 39(3). An arc furnace comprises a chamber 44 enclosing a -crucible 40 for holding the material 52, e.g. titanium sponge to be melted and means for producing an electric discharge between an electrode 60 and the material 52, the means forming one or more arc torches producing a stable beam of ionised gas directed to the material 52. A non-consumable tungsten electrode 60 is mounted within a metal nozzle 54 having an orifice 56 through which the arc is directed; and an inert gas, e.g. argon supplied under pressure from a pipe 66 to the nozzle fills the chamber. The arc torch is mounted in a ball and socket joint 50 on a cover 51 of the water-cooled chamber, so that the arc may be directed to any part of the surface of the material 52. The electrode 60 is connected to the negative side of a D.C. source having its positive side connected to the crucible 40 and for starting the arc through a ballast resistor 64 to the nozzle 54. The orifice 56 of the nozzle shapes the cross-section of the arc and is water-cooled. Several arc torches may be mounted in the cover 51; and if material to be melted is non-conductive when cold, a pair of stabilised beams of ionised gas is arranged to impinge on one another just above the material. The electrodes may be of the same or opposite potential and the crucible is of opposite potential to at least one of the electrodes. If the material becomes conductive when hot, the arc torches are then directed on to it so that it forms a resistance in series with the arcs. The titanium sponge is fed to the crucible through a pipe 68. The arc torch impinges on the molten material, e.g. an alloy so as to cause stirring thereof. The crucible 40 is of copper and is cooled by water. A 3 phase A.C. may be used in star connection with three electrodes. In a modification a protective gas, e.g. argon or nitrogen is fed to the electrode to make the arc torch and another gas either cheaper or more reactive is fed into the arc downstream of the arc. Thus preheated oxygen may be added to the arc in making steel by an oxygen gas process. An annular consumable carbon electrode may surround the nozzle and may be fed automatically so that its lower end projects just below the nozzle. A larger current is supplied to the carbon electrode than to the central arc torch which it surrounds and supplies energy to the arc torch. Specifications 845,410 and 845,411 are referred to.
GB20417/57A 1956-06-29 1957-06-28 Improved arc working process and apparatus Expired GB866106A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US59500356A 1956-06-29 1956-06-29

Publications (1)

Publication Number Publication Date
GB866106A true GB866106A (en) 1961-04-26

Family

ID=31888527

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20417/57A Expired GB866106A (en) 1956-06-29 1957-06-28 Improved arc working process and apparatus

Country Status (6)

Country Link
AT (1) AT225955B (en)
CH (1) CH358168A (en)
DK (1) DK106569C (en)
ES (1) ES236216A2 (en)
GB (1) GB866106A (en)
SE (1) SE342122B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3105864A (en) * 1960-01-20 1963-10-01 Northwestern Steel & Wire Co Means of increasing arc power and efficiency of heat transfer
US3136835A (en) * 1961-08-03 1964-06-09 Northwestern Steel & Wire Co Method and means for equalizing the heat balance within an electric furnace
US3173981A (en) * 1962-09-24 1965-03-16 Union Carbide Corp Arch torch furnacing means and process
US3210454A (en) * 1962-05-17 1965-10-05 Alloyd Electronics Corp High temperature apparatus
US3253076A (en) * 1963-08-29 1966-05-24 Union Carbide Corp Apparatus for making precise castings
US3257196A (en) * 1961-12-01 1966-06-21 Centre Nat Rech Scient Methods of using plasm torches for treating powdery refractory materials
US5007161A (en) * 1989-02-21 1991-04-16 Yoshida Kogyo K. K. Apparatus for feeding and transferring discrete coupling elements
EP0625869A2 (en) * 1993-05-19 1994-11-23 Schuller International, Inc. Method for the melting, combustion or incineration of materials and apparatus therefor
CN102534453A (en) * 2012-01-12 2012-07-04 北京工业大学 Test device and method for simulating particle deposition molding
DE19958016B4 (en) * 1998-12-02 2013-07-18 Stefan Laure plasma generator

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3105864A (en) * 1960-01-20 1963-10-01 Northwestern Steel & Wire Co Means of increasing arc power and efficiency of heat transfer
US3136835A (en) * 1961-08-03 1964-06-09 Northwestern Steel & Wire Co Method and means for equalizing the heat balance within an electric furnace
US3257196A (en) * 1961-12-01 1966-06-21 Centre Nat Rech Scient Methods of using plasm torches for treating powdery refractory materials
US3210454A (en) * 1962-05-17 1965-10-05 Alloyd Electronics Corp High temperature apparatus
DE1219141B (en) * 1962-09-24 1966-06-16 Union Carbide Corp Method and apparatus for melting electrically conductive material
US3173981A (en) * 1962-09-24 1965-03-16 Union Carbide Corp Arch torch furnacing means and process
US3253076A (en) * 1963-08-29 1966-05-24 Union Carbide Corp Apparatus for making precise castings
US5007161A (en) * 1989-02-21 1991-04-16 Yoshida Kogyo K. K. Apparatus for feeding and transferring discrete coupling elements
EP0625869A2 (en) * 1993-05-19 1994-11-23 Schuller International, Inc. Method for the melting, combustion or incineration of materials and apparatus therefor
EP0625869A3 (en) * 1993-05-19 1995-04-19 Schuller Int Inc Method for the melting, combustion or incineration of materials and apparatus therefor.
DE19958016B4 (en) * 1998-12-02 2013-07-18 Stefan Laure plasma generator
CN102534453A (en) * 2012-01-12 2012-07-04 北京工业大学 Test device and method for simulating particle deposition molding
CN102534453B (en) * 2012-01-12 2013-12-25 北京工业大学 Test device and method for simulating particle deposition molding

Also Published As

Publication number Publication date
AT225955B (en) 1963-02-25
ES236216A2 (en) 1958-01-01
DK106569C (en) 1967-02-20
CH358168A (en) 1961-11-15
SE342122B (en) 1972-01-24

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