US3390220A - Electrode holder for arc furnaces - Google Patents

Electrode holder for arc furnaces Download PDF

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Publication number
US3390220A
US3390220A US652156A US65215667A US3390220A US 3390220 A US3390220 A US 3390220A US 652156 A US652156 A US 652156A US 65215667 A US65215667 A US 65215667A US 3390220 A US3390220 A US 3390220A
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US
United States
Prior art keywords
electrode
jaw members
jaws
electrode holder
group
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 - Lifetime
Application number
US652156A
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English (en)
Inventor
Wagner Alfred
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.)
Beteiligungs und Patentverwaltungs GmbH
Original Assignee
Beteiligungs und Patentverwaltungs GmbH
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 Beteiligungs und Patentverwaltungs GmbH filed Critical Beteiligungs und Patentverwaltungs GmbH
Application granted granted Critical
Publication of US3390220A publication Critical patent/US3390220A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00—Heating by electric discharge
    • H05B7/02—Details
    • H05B7/10—Mountings, supports, terminals or arrangements for feeding or guiding electrodes
    • H05B7/103—Mountings, supports or terminals with jaws

Definitions

  • An electrode holder and contact member for holding a generally cylindrical electrode and for applying current to the electrode including a plurality of jaw members arranged .in at least two groups with three jaw members in each group, the jaw members of each group being positioned to receive a generally cylindrical electrode, the plane defined by the three jaw members of each group being substantially perpendicular to the axis of the electrode, the groups of jaw members being spaced from each other along the axis of the electrode, and the individual jaw members of each group being circumferentially spaced with respect to each other and circumferentially staggered with respect to the jaw members of the adjacent groups.
  • the present invention relates to an electrode holder for an arc furnace, which holder serves to support the electrode and also acts as a contact member for the transmission of current from the high-amperage current line to the electrode.
  • the invention includes at least six jaw members each having a relatively small surface area and arranged in two groups with three members in each group, the jaw members of each group being positioned to define a plane which is substantially perpendicular to the axis of the electrode, the groups of jaw members being spaced from each other along the axis of the electrode, and the individual jaw members being circumferentially spaced with respect to each other.
  • this invention it has been found that it is not the size of the contact areas but the number of contact points which is decisive for good current transmission between the high-amperage current line and the electrode, and this invention accordingly employs six small jaws instead of the previously used two or three large jaws.
  • FIGURE 1 is a vertical cross-sectional view of one illustrative electrode holder of this invention.
  • FIGURE 2 is a horizontal cross-sectional view taken substantially along the plane defined by reference line 22 in FIGURE 1.
  • An electrode 1 of an arc furnace (not shown) is firmly clamped by means of jaws 2, 3 and 4 in an upper plane and by means of jaws 5, 6 and 7 in a lower plane.
  • the jaws 2 and 3 of the upper plane are circumferentially staggered by with respect to the jaws 5 and 6 of the lower plane and the third jaw each, 4 or 7, respectively, is disposed on the vertical symmetrical plane of jaws 2, 3 or 5, 6, respectively.
  • the jaws 2 to 7 are movably disposed in a housing 8 surrounding them or in a clamp'ng device 10 so that they can be adjusted to conform to the electrode surface. It is advisable to have the supports of the jaws 2 to 7 constructed as ball sockets to accommodate irregularities in the electrode surface.
  • jaws 2, 3 and 7 advantageously for the transmission of current in addition to jaws 4, 5 and 6 by connecting the high-amperage current line 9 thereto.
  • the electrode holder of this invention provides a threepoint connection in two planes which are perpendicular to the electrode axis and in which the jaws are disposed in two groups of three. Furthermore, jaws 2, 3 and 7 or 4, 5 and 6, also realize statically determined three-point connections in two planes parallel to the electrode axis.
  • the three jaws 2, 3 and 7 connected to the clamping device 10 can be removed from electrode 1.
  • Canals 11 are provided in the jaws 4, 5 and 6 which are connected with pipes 12. Coolant can be flowed through said pipes and said canals so that the jaws 4, 5 and 6 are cooled.
  • a pump which serves to a positive circulation of the coolant, can be provided.
  • the electrode holder of this invention has the particular advantage that a statically determined three-point connection of the electrodes, a uniform pressure of the individual jaws on the electrode and thus a fault-less contact between the jaws and the electrode is produced.
  • the electrode holder of this invention thus makes possible the use of baked electrodes of low manufacturing accuracy whose cylindrical surface has not been turned, thereby appreciably lowering the cost of arc furnace electrodes without degrading their performance.
  • An electrode holder and contact member for holding a generally cylindrical electrode and for applying current thereto, comprising a plurality of jaw members arranged in at least two groups with three jaw members in each group, the jaw members of each group being positioned to receive such a generally cylindrical electrode, the plane defined by the three jaw members of each group be ng substantially perpendicular to the axis of such a generally cylindrical electrode, and said groups of jaw members being spaced from each other along the axis of such a generally cylindrical electrode.
  • An electrode holder as defined in claim 1 comprising two groups of three jaw members each, the individual jaw members of each group being circumferentially spaced with respect to each other and being circumferentially staggered by 180 with respect to the jaw members of the other group.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Discharge Heating (AREA)
  • Furnace Details (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
US652156A 1966-07-26 1967-07-10 Electrode holder for arc furnaces Expired - Lifetime US3390220A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0088179 1966-07-26

Publications (1)

Publication Number Publication Date
US3390220A true US3390220A (en) 1968-06-25

Family

ID=6984164

Family Applications (1)

Application Number Title Priority Date Filing Date
US652156A Expired - Lifetime US3390220A (en) 1966-07-26 1967-07-10 Electrode holder for arc furnaces

Country Status (5)

Country Link
US (1) US3390220A (cs)
BE (1) BE701610A (cs)
DE (1) DE1565429B1 (cs)
GB (1) GB1187246A (cs)
SE (1) SE353438B (cs)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3578893A (en) * 1967-11-20 1971-05-18 Boehler & Co Ag Geb Electrical component clamping device in an electromelting installation for metals
US5283768A (en) * 1991-06-14 1994-02-01 Baker Hughes Incorporated Borehole liquid acoustic wave transducer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BG36780A1 (en) * 1983-03-15 1985-01-15 Peev Contact head for electrode holders in electric arc furnaces
DE4122151A1 (de) * 1991-07-04 1993-01-07 Flohe Gmbh & Co Elektrodenfassung eines elektrodentragarms

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1702359A (en) * 1928-03-19 1929-02-19 Molmark Einar Electrode holder
US2903494A (en) * 1957-02-23 1959-09-08 Demag Elektrometallurgie Gmbh Electrode attaching device for electric arc furnaces
US3189673A (en) * 1962-09-19 1965-06-15 Union Carbide Corp Electrode holder

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE386631C (de) * 1923-12-14 Carl Burbott Vorrichtung fuer die Stromzufuehrung an Elektroden elektrischer OEfen
DE496921C (de) * 1926-04-25 1930-04-29 Gustav Hilger Elektrodenfassung, bestehend aus zwei uebereinanderliegenden, wassergekuehlten Einzelfassungen
US2386260A (en) * 1943-09-16 1945-10-09 Payne William Harvey Mounting for electric arc furnace electrodes
FR914080A (fr) * 1944-01-24 1946-09-27 Brown Porte-électrode à refroidissement naturel, pour fours électriques à arc
US2538603A (en) * 1946-07-17 1951-01-16 Thys Edouard Furnace electrode holder
US2884475A (en) * 1957-07-12 1959-04-28 Elektrokemisk As Clamp members for supporting electrodes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1702359A (en) * 1928-03-19 1929-02-19 Molmark Einar Electrode holder
US2903494A (en) * 1957-02-23 1959-09-08 Demag Elektrometallurgie Gmbh Electrode attaching device for electric arc furnaces
US3189673A (en) * 1962-09-19 1965-06-15 Union Carbide Corp Electrode holder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3578893A (en) * 1967-11-20 1971-05-18 Boehler & Co Ag Geb Electrical component clamping device in an electromelting installation for metals
US5283768A (en) * 1991-06-14 1994-02-01 Baker Hughes Incorporated Borehole liquid acoustic wave transducer

Also Published As

Publication number Publication date
GB1187246A (en) 1970-04-08
SE353438B (cs) 1973-01-29
BE701610A (cs) 1968-01-02
DE1565429B1 (de) 1971-07-01

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