US3585353A - Cylindrical contact electrode for supplying electric current to an element{13 especially pipes{13 heated by resistance heating - Google Patents

Cylindrical contact electrode for supplying electric current to an element{13 especially pipes{13 heated by resistance heating Download PDF

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Publication number
US3585353A
US3585353A US801458A US3585353DA US3585353A US 3585353 A US3585353 A US 3585353A US 801458 A US801458 A US 801458A US 3585353D A US3585353D A US 3585353DA US 3585353 A US3585353 A US 3585353A
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United States
Prior art keywords
electrode
sections
heated
openings
pair
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Expired - Lifetime
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US801458A
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English (en)
Inventor
Kazimierz Markiewicz
Leslaw Kus
Jan Golek
Jozef Dudek
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Individual
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Individual
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Filing date
Publication date
Priority claimed from PL125503A external-priority patent/PL58072B3/pl
Application filed by Individual filed Critical Individual
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Publication of US3585353A publication Critical patent/US3585353A/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0004—Devices wherein the heating current flows through the material to be heated
    • H05B3/0009—Devices wherein the heating current flows through the material to be heated the material to be heated being in motion

Definitions

  • This invention relates to a cylindrical contact electrode of segmented design to supply current to an element-especially pipesheated by resistance heating, the segments having wire brushes permanently fixed to their surfaces directed towards the heated element.
  • the electrode according to Polish Pat. No. 54246 is in the form of hollow cylindrical sections to permit forced circulation of the cooling medium and connected electrically to one another by means of flexible conductors. These sections are externally embraced by resilient clamping rings and are equipped with protrusions and connector pipes for connecting them to the cooling medium supply. Annular lugs provided with projections and terminals are situated on both sides of the electrode sections for fastening the electrode and for supplying the electric current respectively, as well as with longitudinal openings permitting movement of the sections during change of the electrode internal diameter stemming from the change of the external diameter of the element being heated.
  • the electrode so designed is intended for connecting the heated element to one pole of a currentsupply source only; a second electrode is required to connect the element to the second pole.
  • the current passes from the supply source to the heated element through the annular lugs and through the sections electrically connected to one other and to said lugs by means of flexible conductors.
  • This known electrode design permits a relatively large contact surface to be obtained between the electrode and an element being heated by resistance heating, ensures thatthe electrode is in resilient contact with the heated element which results in reducing contact resistance between them and ensures an easy supply of current, especially in the case of elements of smooth surfaces.
  • Such design also allows intensive cooling of the electrode parts exposed to'relatively high temperatures. In many cases it is required, during the continuous resistance heating of elements, e.g.
  • a cylindrical electrode according to the present invention consists of hollowed sections provided on the whole length of their inner walls with wire brushes and being located in longitudinal openings of two annular lugs, wherein said longitudinal openings are arranged at equal distances from one another and from the electrode axis along a family of spiral curves having' their beginning on the electrode axis and lying on planes perpendicular to this axis.
  • the electrode is equipped on both sides with a cooling nozzle and with a delivery chamber for the coolant created by the electrode guard.
  • FIG. 3 is a cross-sectional view along the line A-A, and FIG. 4
  • sections 1 having channels 2 drilled through them for their forced positive cooling, said sections have wire brushes 3 mounted on their inner walls, facing the axis of the annulus formed by said sections and are provided with connection pipes 4 to connect the cooling medium supply and. with terminals 5 to connect them to the electric current circuit.
  • the sections 1 are additionall rovidedon both sides with protrusions 6 by means of whic ey are held in longitudinal openings8 machined in both plates 7 and spaced at equal distances to one other and to the axis of the electrode itself along a family of spiral curves having their beginning at the electrode axis and lying in a plane perpendicular to this axis.
  • each plate 7 is provided with an arm 10 to which the pressing force is applied.
  • the sections 1 together with plates 7 controlling the pressing force are suspended on fixtures l1 connecting them to a supporting structure 12 to which a housing 13 is also fixed with an outlet 14 serving to drain the cooling medium away.
  • Cooling medium inlet chambers 15 with connection pipes 16 are fitted in the housing 13 on both sides of the electrode, being disposed axially in relation to the electrode and provided with an annular nozzle 17 for cooling the heated element.
  • the electrode according to the invention also serves to connect one pole of the current supply source to the heated element; a second electrode being necessary to connectboth poles of said source. The current passes through terminals 5, sections 1 and brushes 3 to the heated element 9.
  • the radially movable sections 1 together with brushes 3 are pressed against the heated element by means of controlling plates 7 due to longitudinal openings 8, through the medium of arm 10.
  • the electrode cooling circuit is connected to the cooling medium source by connection pipes 4 and channels 2; and the circuit to cool the thermally treated element is connected to said cooling source by means of connecting pipe 16, inlet chambers 15 and outlet pipe 14 o the housing 15.
  • the electrode so designed is more universal as well as simple in servicing.
  • a cylindrical contact electrode for supplying electric current to a cylindrical metal element heated by passage of current therethrough, comprising a plurality of hollow wedgeshaped sections positioned relative to one another in cylinderforming relationship about the heated element, inlet and outlet openings in each of said sections for the passage therethrough of a cooling medium, wire brush means extending the length of each said section and directed towards the axis of said element, at least one longitudinally extending lug at each end of each of said sections, and a pair of platelike members at each end of said sections coaxial with the cylinder formed thereby, each said plates having a plurality of elongated openings arranged at equal distances from one another and to the electrode axis, the openings in one plate of each of said pair of plates extending along straight radial lines and the openings in the other plate of each of said pair of plates extending along curves constituting a family of spirals having their beginning on said electrode axis, said platelike members being assembled with said lugs extending through said openings, one of each.

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  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Heat Treatment Of Articles (AREA)
  • Control Of Resistance Heating (AREA)
US801458A 1968-02-28 1969-02-24 Cylindrical contact electrode for supplying electric current to an element{13 especially pipes{13 heated by resistance heating Expired - Lifetime US3585353A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL125503A PL58072B3 (cs) 1968-02-28

Publications (1)

Publication Number Publication Date
US3585353A true US3585353A (en) 1971-06-15

Family

ID=19949898

Family Applications (1)

Application Number Title Priority Date Filing Date
US801458A Expired - Lifetime US3585353A (en) 1968-02-28 1969-02-24 Cylindrical contact electrode for supplying electric current to an element{13 especially pipes{13 heated by resistance heating

Country Status (5)

Country Link
US (1) US3585353A (cs)
CS (1) CS157057B2 (cs)
DE (1) DE1910027C3 (cs)
FR (1) FR2002784A1 (cs)
GB (1) GB1245538A (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3843894A (en) * 1973-03-29 1974-10-22 Little Inc A Electrical contact apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US484637A (en) * 1892-10-18 Apparatus for annealing wire or metallic rods by electricity
US2086305A (en) * 1931-08-07 1937-07-06 Frank L Sessions Apparatus for electric welding
US2365539A (en) * 1941-05-07 1944-12-19 Westinghouse Electric & Mfg Co Electrolytic etching polished surfaces

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US484637A (en) * 1892-10-18 Apparatus for annealing wire or metallic rods by electricity
US2086305A (en) * 1931-08-07 1937-07-06 Frank L Sessions Apparatus for electric welding
US2365539A (en) * 1941-05-07 1944-12-19 Westinghouse Electric & Mfg Co Electrolytic etching polished surfaces

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3843894A (en) * 1973-03-29 1974-10-22 Little Inc A Electrical contact apparatus

Also Published As

Publication number Publication date
FR2002784A1 (cs) 1969-10-31
CS157057B2 (cs) 1974-08-23
GB1245538A (en) 1971-09-08
DE1910027A1 (cs) 1969-09-11
DE1910027B2 (de) 1975-05-07
DE1910027C3 (de) 1975-12-11

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