EP0037679A1 - Conduits de refroidissement incorporés dans des pièces coulées - Google Patents

Conduits de refroidissement incorporés dans des pièces coulées Download PDF

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Publication number
EP0037679A1
EP0037679A1 EP81301262A EP81301262A EP0037679A1 EP 0037679 A1 EP0037679 A1 EP 0037679A1 EP 81301262 A EP81301262 A EP 81301262A EP 81301262 A EP81301262 A EP 81301262A EP 0037679 A1 EP0037679 A1 EP 0037679A1
Authority
EP
European Patent Office
Prior art keywords
copper
casting
tubes
castings
coolant
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.)
Withdrawn
Application number
EP81301262A
Other languages
German (de)
English (en)
Inventor
Thomas Westley
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.)
WESTLEY BROTHERS Ltd
Original Assignee
WESTLEY BROTHERS Ltd
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 WESTLEY BROTHERS Ltd filed Critical WESTLEY BROTHERS Ltd
Publication of EP0037679A1 publication Critical patent/EP0037679A1/fr
Withdrawn legal-status Critical Current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
    • H05B7/105—Mountings, supports or terminals with jaws comprising more than two jaws equally spaced along circumference, e.g. ring holders

Definitions

  • the present invention relates to coolant conduits incorporated in castings.
  • the electrode holder carries current to the electrode and is exposed to severe heating when in use in the furnace and in particular may undergo severe local heating as a result of arcing between the electrode and the holder.
  • fine cracking can occur in the body of the casting which would allow cooling water to leak away if the coolant duct was formed directly in the casting.
  • the integrity of the copper pipe incorporated in the casting is maintained for a much longer period and thus leakage of coolant is prevented.
  • a cast article incorporates coolant conduits which have been prefabricated from at least two bend members having generally U-shaped passages therein and a plurality of tubes joined at their ends to the bend members to connect the said U-shaped passages.
  • the tubes can be substantially straight, though curves and bends of large radius are possible to fit the shape of the cast article, and can be placed as required in the cast article for effecting the required cooling. In particular they can be more closely spaced than is possible with bent pipe because the formation of bends of small radius in the bend members, for example by casting the bend members, is relatively simple.
  • the body portion shown in Figs. 1, 2 and 3 is a copper casting.
  • the casting 10 has a concave face 11 provided with grooves 12 to receive graphite pads which engage a cylindrical coated graphite electrode.
  • Copper tubes 13 embedded in the casing 10 serve to convey cooling water through the casting at positions close to the grooves 12.
  • the casting is' economical in use of material because it follows the outline of the ccoling pipes and its back face has rectangular recesses bounded by side walls 14 and 15, a central fin 16 and top and bottom walls 17 and 18.
  • Formed as an integral part of the casting is an upstanding bracket 19 with side plates 20 and 21 and a rearwardly extending connecting plate 22.
  • the coolant conduit assembly comprises the tubes 13, now identified as outer tubes 13A and 13B and four intermediate tubes 13C, and two castings 23 and 24.
  • the upper casting 23 comprises two generally U-shaped pipe bend sections 25 and 26 joined by a web 27.
  • the tubes 13C are welded to the bend sections 25 and 26 which connect the tubes in pairs.
  • the lower casting 24 to which the tubes 13A, 13B and 13C are welded has three generally U-shaped pipe bend sections 28, 29 and 30 joined by webs 31 and 32.
  • the bend section 29 connects the inner pair of intermediate tubes 13C while the bend sections 28 and 30 join the outer tubes 13A and 13B, respectively, to the adjacent intermediate tubes 13C.
  • the castings 23 and 24 are shaped to follow the curvature of the face 11 of the clamp body (Fig.3) and the upper ends of the outer tubes 13A and 13B are cranked back to emerge from the rear part of the top face of the body 10 as seen at 33 in Fig.l.
  • fabricating the coolant conduit assembly involves producing the two castings 23 and 24 and welding lengths of copper tube to them. Only the tubes 13A and 13B require bending and this is only through relatively small angles. After fabrication of this assembly the body 10 is cast around it. The tubes 13 czn be accurately placed in the best positions to effect the cooling and the casting can be designed to fit closely around the assembly with a minimum of excess material.
  • the cooling conduit assembly is of the same material as the casting but in other applications of the invention the materials may be different, for example steel tubes in a copper casting, and the invention is not limited to copper castings.
  • the cast pipe bend sections may be shrink fitted, using tubes of larger diameter than the openings in the pipe bend sections and expanding the latter by heating before assembly. This may give latter sealing against leakage of coolant.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP81301262A 1980-03-28 1981-03-24 Conduits de refroidissement incorporés dans des pièces coulées Withdrawn EP0037679A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8010621 1980-03-28
GB8010621 1980-03-28

Publications (1)

Publication Number Publication Date
EP0037679A1 true EP0037679A1 (fr) 1981-10-14

Family

ID=10512482

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81301262A Withdrawn EP0037679A1 (fr) 1980-03-28 1981-03-24 Conduits de refroidissement incorporés dans des pièces coulées

Country Status (3)

Country Link
EP (1) EP0037679A1 (fr)
JP (1) JPS56151161A (fr)
NO (1) NO811033L (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3409180A1 (de) * 1983-03-15 1984-09-20 NPP po Elektrotermia, Sofia Kontaktkopf fuer elektrodenhalter von lichtbogenoefen
WO2023217443A1 (fr) * 2022-05-11 2023-11-16 Sms Group Gmbh Mâchoire de contact en cuivre et son procédé de production

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112974791B (zh) * 2021-02-09 2022-08-30 包头市金为达稀土材料有限公司 一种阴极铸模装置及方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2128826A (en) * 1937-07-01 1938-08-30 Albert H Jung Cooled bearing
US2477077A (en) * 1946-03-09 1949-07-26 Delaware Engineering Corp Electrode clamp
US2584220A (en) * 1945-11-08 1952-02-05 Nihon Alexis Lubricating and cooling means for bearings
FR1174909A (fr) * 1957-05-10 1959-03-18 Perfectionnements apportés à la construction de plaques de contact pour fours électriques
FR2182562A5 (fr) * 1972-04-28 1973-12-07 Ishikawajima Harima Heavy Ind
FR2296343A1 (fr) * 1974-12-24 1976-07-23 Kabel Metallwerke Ghh Procede de fabrication de machoires de contact refroidies a l'eau pour fours de fusion

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2128826A (en) * 1937-07-01 1938-08-30 Albert H Jung Cooled bearing
US2584220A (en) * 1945-11-08 1952-02-05 Nihon Alexis Lubricating and cooling means for bearings
US2477077A (en) * 1946-03-09 1949-07-26 Delaware Engineering Corp Electrode clamp
FR1174909A (fr) * 1957-05-10 1959-03-18 Perfectionnements apportés à la construction de plaques de contact pour fours électriques
FR2182562A5 (fr) * 1972-04-28 1973-12-07 Ishikawajima Harima Heavy Ind
US3843106A (en) * 1972-04-28 1974-10-22 Ishikawajima Harima Heavy Ind Furnace
FR2296343A1 (fr) * 1974-12-24 1976-07-23 Kabel Metallwerke Ghh Procede de fabrication de machoires de contact refroidies a l'eau pour fours de fusion
GB1485238A (en) * 1974-12-24 1977-09-08 Kabel Metallwerke Ghh Method of producing contact jaws for electrodes of electric melting furnaces

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3409180A1 (de) * 1983-03-15 1984-09-20 NPP po Elektrotermia, Sofia Kontaktkopf fuer elektrodenhalter von lichtbogenoefen
WO2023217443A1 (fr) * 2022-05-11 2023-11-16 Sms Group Gmbh Mâchoire de contact en cuivre et son procédé de production

Also Published As

Publication number Publication date
NO811033L (no) 1981-09-29
JPS56151161A (en) 1981-11-24

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE DE FR GB IT SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19820920

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WESTLEY, THOMAS