EP0149064A1 - Kontinuierliches Plattieren von Eisenlegierungen mit geschmolzenem Kupfer - Google Patents

Kontinuierliches Plattieren von Eisenlegierungen mit geschmolzenem Kupfer Download PDF

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Publication number
EP0149064A1
EP0149064A1 EP19840114169 EP84114169A EP0149064A1 EP 0149064 A1 EP0149064 A1 EP 0149064A1 EP 19840114169 EP19840114169 EP 19840114169 EP 84114169 A EP84114169 A EP 84114169A EP 0149064 A1 EP0149064 A1 EP 0149064A1
Authority
EP
European Patent Office
Prior art keywords
core
copper
bath
layer
preheated
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Withdrawn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
EP19840114169
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English (en)
French (fr)
Inventor
Robert R. Brenan
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.)
Osram Sylvania Inc
Original Assignee
GTE Products 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 GTE Products Corp filed Critical GTE Products Corp
Publication of EP0149064A1 publication Critical patent/EP0149064A1/de
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/38—Wires; Tubes
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material

Definitions

  • the invention relates to the manufacture of copper-clad redraw rod and, more particularly, to the continuous casting of a molten copper coating to a hot, active, ferrous alloy base rod under controlled conditions.
  • the disclosure suggests either a rod and solvent swabbing technique or a high pressure solvent system for pumping liquid solvent through the sheath. Thereafter both the core and surrounding sheath are drawn through a reducing die exhibiting a die angle of approximately 30 to 40 degrees. In this process, while the core diameter remains substantially unaltered, the cross-sectional area of the sheath can be expected to experience a reduction of approximately 20 to 50 percent, depending on, inter alia, the original thickness of the sheath and the die angle employed.
  • the cold bonded sheath and rod process described above provides a high quality composite wire with only a modest capital requirement, it is-available to provide wire of only limited sizes, generally 2 millimeter diaemter or less. Furthermore, the cold bonding process is significantly dependent on existence of quality copper tubes.
  • Copper-clad composite wire may also be produced by extrusion of the constituent rod and copper tube.
  • a cold, hydrostatic, extrusion process for forming copper-clad aluminum is described in publication pamphlet AG 14-110 E (January 1972) of the ASEA corporation, Vasteras, Sweden.
  • the pressure chamber requires hydraulic fluid, normally castor oil, in order to provide an enveloping pressure so as to force the billet through the die.
  • Pressure in the chamber is developed by a ram driven into the chamber, thereby compressing the oil.
  • the billet begins to extrude through the die. Extrusion continues as long as the ram moves in the chamber in the direction of the die.
  • the process desribed above is alleged to extrude material at a high rate of reduction and into desired geometrical shapes. Because the castor oil also serves as a lubricant, the billet and die also need be configured so that the castor oil cannot escape between the billet and the die.
  • a primary disadvantage of the hydrostatic extrusion process presently described is that there are no known refinements allowing the process to be used for the formation of copper-clad ferrous composites.
  • a "dip-forming" method of manufacturing copper-clad dumet (a nickel-iron alloy) is described in THE IRON AGE, December 22, 1966, pp. 46,47.
  • the conceptual basis of that process is that, under appropriate circumstances, molten metal will form a sheath around a metal rod passing through the melt at a proper speed.
  • a properly cleaned nickel-iron rod is caused to pass through a refractory metal bushing where it enters a graphite crucible holding a molten copper bath.
  • molten copper freezes around the rod.
  • the thickness of the copper sheath is determined by the temperature and depth of the bath as well as the speed with which the rod passes through the bath.
  • U.S. Patent No. 3,714,701 entitled “Manufacture of Clad Metals" by Dion et al. represents yet another approach to the production of cladding a metal core rod with a sheath of dissimilar metal.
  • two thin, flat strips of cladding material are preformed into confronting semicylindrical shapes and positioned into convergence around a core rod.
  • the strips and rods, which must remain substantially contaminant-free, are maintained at equal temperatures as the assembly is solid-phase roll bonded.
  • the result is asserted to be a clad rod suitable for subsequent drawing into wire, requiring neither subsequent sintering, metal removal, or similar finishing operations.
  • a method of forming a composite conductor the conductor characterized by a ferrous core and a copper cladding.
  • the method comprises the steps of preheating the core in a hydrogen atmosphere to a temperature approximately 50 to 100 degrees Farenheit below the melting point of copper, drawing the preheated core in an upwardly vertical direction through a dry orifice and a molten copper bath at a rate that permits wetting of the core and adhesion of a copper layer to the core, and cooling the composite ferrous core and copper cladding so that solidification of the cladding occurs at a point below the surface of the molten copper bath.
  • an apparatus for forming the composite conductor in another aspect of the invention, includes an annular dry orifice through which a ferrous rod is drawn up and through a molten bath into a core positioned by a nozzle threaded into an interior surface of a chill mold.
  • the chill mold is provided a fireproof lining so that it may be inserted a requisite depth into molten copper bath.
  • the drawing is an apparatus, including a chill mold, nozzle, annular core and fireproof lining, according to which the subject invention is to be practiced.
  • Patent 3,746,077 includes a water cooled jacket, or chill mold, comprising an inner pipe, and intermediate pipe and an outer pipe through which cooling water is caused to flow.
  • a nozzle is threaded into an interior of surface of the inner pipe and provides a guide surface at its lower end for a substantially annular core.
  • the nozzle, the core and an accuminated mandrel, positioned within the nozzle, define a passageway through which molten metal is caused to flow in an upward direction.
  • the chill mold itself is surrounded with a fireproof lining attached at the lower end of the nozzle so that chill may be immersed so deeply into the melt that the solidifying front is formed below the surface of the melt.
  • the extension of the inner pipe above the surface of the melt serves as an after-cooler of the pipe. Because the dimensions of the pipe are largely determined by the inner diameter of the core at the solidification front, it is possible to control relevant. pipe dimensions, principally pipe thickness, by appropriately controlling the point at which the solidification front occurs.
  • the apparatus includes a chill mold 1 including an inner pipe 11, an outer pipe 12 and an intermediate pipe 13. Cooling water is caused to run into the chill mold through pipe A and out pipe B. A nozzle 2 is threaded into an interior surfaces of pipe 11 in order to promote efficient heat transfer between the chill mold and the nozzle. It is anticipated that the nozzle may be fabricative from solid graphite or from a sintered alloy of metal and metal oxide. An annular core 3 is attached to nozzle and is positioned with the assistance a guiding surface 21 defined by the nozzle. The lower end of the chill mold is protected by a fireproof lining 5 contacted tightly to the nozzle at exterior surface 22 largely through the operation of a nut 6 or similar fastening means.
  • the process for a manufacturing a composite conductor comprising a ferrous core and copper cladding proceeds as follows.
  • the core is preheated in a reducing atmsophere, e.g. five percent hydrogen, ninety-five percent nitrogen, to a temperature slightly below the melting point of copper.
  • core may be heated to a temperature of approximately 1900° Farenheit.
  • a reducing atmosphere is utilized in order to activate, i.e., flux, the preheated core.
  • the core is drawn up through a dry orifice 7, annular in configuration, supported by the bottom of the melt furnace 8 and through the molten copper bath 9. It should be noted that prevention of copper spillage through orifice 7 depends on the maintenance of the rod temperature to just below the melting point of copper.
  • the subject invention comprises is a process and enabling apparatus for forming a composite conductor (read: wire) having a ferrous core, be it steel or iron- nickel alloy, and a copper cladding. It is to be understood that specific details of the process and apparatus are to be tailored according to the particular end product desired.
  • the subject invention is useful in the effective and efficient manufacture of copper-clad composite wire.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Continuous Casting (AREA)
  • Coating With Molten Metal (AREA)
EP19840114169 1983-12-30 1984-11-23 Kontinuierliches Plattieren von Eisenlegierungen mit geschmolzenem Kupfer Withdrawn EP0149064A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US56744183A 1983-12-30 1983-12-30
US567441 2006-12-06

Publications (1)

Publication Number Publication Date
EP0149064A1 true EP0149064A1 (de) 1985-07-24

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ID=24267166

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840114169 Withdrawn EP0149064A1 (de) 1983-12-30 1984-11-23 Kontinuierliches Plattieren von Eisenlegierungen mit geschmolzenem Kupfer

Country Status (2)

Country Link
EP (1) EP0149064A1 (de)
DE (1) DE149064T1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002055753A1 (en) * 2000-12-20 2002-07-18 Outokumpu Oyj A method for the manufacture of layered metal product slabs and layered metal product slabs
EP2360286A1 (de) 2010-02-15 2011-08-24 Bogumil Miklasz Verfahren zur Herstellung eines überzogenen Drahts

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT239043B (de) * 1960-09-12 1965-03-10 Gen Electric Verfahren zum Anlagern von geschmolzenem Kupfer an einem kontinuierlich bewegten Kernstab
GB1527746A (en) * 1974-12-20 1978-10-11 Gen Electric Metal casting
WO1981003136A1 (en) * 1980-05-08 1981-11-12 S Ekerot Method of manufacturing metallic wire products by direct casting of molten metal,and apparatus for carrying out the method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT239043B (de) * 1960-09-12 1965-03-10 Gen Electric Verfahren zum Anlagern von geschmolzenem Kupfer an einem kontinuierlich bewegten Kernstab
GB1527746A (en) * 1974-12-20 1978-10-11 Gen Electric Metal casting
WO1981003136A1 (en) * 1980-05-08 1981-11-12 S Ekerot Method of manufacturing metallic wire products by direct casting of molten metal,and apparatus for carrying out the method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, unexamined applications, C field, vol. 4, no. 50, April 16, 1980 THE PATENT OFFICE JAPANESE GOVERNMENT page 43 C 7 * JP - A -55-21 537 ( YAZAKI SOUGIYOU K.K. ) * *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002055753A1 (en) * 2000-12-20 2002-07-18 Outokumpu Oyj A method for the manufacture of layered metal product slabs and layered metal product slabs
US7024750B2 (en) 2000-12-20 2006-04-11 Outokumpu Oyj Method for the manufacture of layered metal product slabs and layered metal product slabs
AU2002217180B2 (en) * 2000-12-20 2006-05-25 Outokumpu Oyj A method for the manufacture of layered metal product slabs and layered metal product slabs
EP2360286A1 (de) 2010-02-15 2011-08-24 Bogumil Miklasz Verfahren zur Herstellung eines überzogenen Drahts

Also Published As

Publication number Publication date
DE149064T1 (de) 1985-10-24

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Inventor name: BRENAN, ROBERT R.