US3163407A - Method of threading wires in muffles and apparatus for practicing same - Google Patents

Method of threading wires in muffles and apparatus for practicing same Download PDF

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Publication number
US3163407A
US3163407A US118416A US11841661A US3163407A US 3163407 A US3163407 A US 3163407A US 118416 A US118416 A US 118416A US 11841661 A US11841661 A US 11841661A US 3163407 A US3163407 A US 3163407A
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United States
Prior art keywords
wire
wires
threading
treatment zone
speed
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Expired - Lifetime
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US118416A
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English (en)
Inventor
Guingand Jean Raymond
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Heurtey SA
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Heurtey SA
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0043—Muffle furnaces; Retort furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire

Definitions

  • the invention relates to furnaces equipped with muffies and designed for treating'wire.
  • the furnaces may provide a heat treatment process or a metallization process in which the wires to be treated are received in tubular mufiles the diameter of which is very small in relation to their length.
  • the furnaces are intended for operation in continuous fashion, however, a threading problem arises periodically each time work is resumed or after a wire breaks accidentally.
  • the threading method commonly employed is a manual one and consists, generally, in using several men at once to push the wire as fast as possible by hand until it emerges at the downstream end of the tube. This is a laborious method requiring personnel for the purpose; it is furthermore unreliable in the case of tubes'exceeding a certain length and becomes entirely inapplicable where excessively long installations are involved.
  • the invention has for one of its objects a' method whereby the threading of a wire through a muf le is accomplished by high speed mechanical propulsion, this speed being greatly in excess of the normal rate of travel of the wire in the course of treatment and being such that the wire has virtually no time to heat up other than superficially, the core of the wire retaining the mechanical properties needed to ensure stiffness.
  • the invention further has for its object apparatus for practicing such a method, and, in a preferred embodiment of such apparatus, high speed propulsion of the wire is accomplished by means of a pair of clamping rollers which are movable relative to each other to enable wire engagement to take place, said rollers being associated to at least one motor and to means for synchronizing their motion.
  • the assembly consisting of the propelling rollers and their driving and synchronizing means is mounted in the form of a mobile and retractable mechanism, together with locking means whereby said mechanism may be clamped in position opposite a given tubular muflie, the retractability feature enabling the positioning to be accomplished without interferingwith the neigh bouring mufliesa
  • . 1 is a front elevation of the wire threading device.
  • 2 is a side elevation of the device of FIG. 1.
  • 3 is-a plan View of the device of FIG. 1.
  • FIG. 4 is an edgewise view of the threading rollers of the device showing their synchronizing gears
  • FIG. 5 is a partial schematic perspective view of a heat treatment furnace with a cut away portion showing the rnufiles.
  • FIG. 5 is on a reduced scale when compared with FIGS. 1-4.
  • a heat treatment furnace 1a Onto the front face 1 of a heat treatment furnace 1a open tubes 2a are arranged in single or multiple rows with front openings 2, and there is secured to this face a supporting frame 3 which surrounds the front openings of said tubes.
  • the tubes in extend through a heat treatment zone in the furnace la;
  • Said frame 3 has two reinforcing parallel stays 4 and 5 which extend perpendicular to the plane of the frame.
  • These stays are joined together, on the one hand, by a round shaft 6 at the top and are joined, on the other hand, to a square shaft 8 having cylindrical end trunnions, said square shaft 8 being rotatable by means of a stud 9 rigidly connected to each of its ends, each such stud being designed to cooperate with a tubular manipulating rod.
  • the cylindrical shaft 6 is fixed between the stays 4 and 5.
  • Protective casing it? is coupled to shaft 6 so as to be pivotable thereabout while being slidable along shaft 6 coupled to the outer face of easing it) is a lever arm 11 supporting on its end a counterweight 12.
  • Said casing encloses an upper grooved roller 14 mounted on a shaft 13, adjacent which is arranged a large-module geaiwheel 15.
  • Shaft 13 is the drive shaft of a compressed ah motor 16 the casing of which is fixed to the side of casing lthand compressed air motor 16 is equipped with a cock 17 which is connected to'a flexible supply lead 18.
  • a cylindrical rod 1% is located beneath the shaft 6 and is slidable in bearings in the stays 4 andS, one of these hearings comprising a spring-loaded ball type lock Zil designed to cooperate with grooves 21 on said rod 19 and spaced at intervals equal to those separating the tubes 2.
  • Said rod 19 is provided with an operating handle.
  • the forward portion of casing 23 comprises, at a level corresponding to a plane approximately tangential to said roller 24, a bracket 23a on which are mounted two guiding rollers 27 which are freely rotatable about their respective axes.
  • the bottom of casing 23 is designed to cooperate with a positioning strip 28 rigidly connected to the square shafts, and strip 28 cooperates at its extremities with limit stops 29 and 30 provided at the vertical ends of the stays 4 and 5 as best seen; in FIG. 2.
  • V The device described hereinabove functions in the following manner: a V The bottom casing can'be moved whenin the lowered position shown by the chain-dotted lines in FIG. 2, to a 7 position opposite one of the'tu-bes 2 through which the wire is to be threaded.
  • the bottom casing 23 is moved by a transverse sliding motion underneath the, loom of wires running through the adjacent tubes 2 so asnot to interfere with the passage of the wires through the adjacent tu-bes.
  • movement is stopped and transverse motion is prevented by the springloaded ball 2% as it drops into the corresponding groove 21 of shaft 19.
  • the casing 23 is then raised by swivelling the strip 23. Having thus been lifted by the strip 23, the
  • casing 23 is retained against the stop 3%). With the casing alignment with casing 23 and then pivoted downwardly to assume the position shown in solid lines in FIG. 2. In the latter position,.the roller 14 clamps the wire against the roller 24 and the gearwheels '15 and 25 mesh together.
  • the cock 17 is then opened and the wire is driven through the tube 2, preferably with uniform acceleration,
  • the compressed air-motor 16 -prevents any sudden increases in the speed of the wire, any slip between the rollers 14. and 25 and the wire; and any danger of the auxiliary Wire being tightened about its bobbin.
  • the threading operation is accomplished at high speed, e.g., in an installation 50 metres (164 feet) long threading is completed at an average speed of about 150- metres (492 feet) per minute.
  • heating up of the auxiliary wire in a tube 2 can onlyaffect thewire superficially, so that its mechanical characteristics, insofaras its resistance to buckling is concerned, remain virtually unimpaired.
  • nism can then be :opened and retracted sideways, after which drawing of the wire to be treated through tube 2 can be performed'by any conventional means.
  • the large-rnodule gearwheels 15 and 25 are-but a convenient means of synchronizing therollers and avoiding buckling due to'ditferences in speed from oneroller to another.
  • an individual motor could be provided for each roller.
  • the compressed-air. motor could be replaced by a motor of any type :whatsoever, for instance an electricmotor, certain motors of this type being capable of driving the system at uniformly accelerated speed.
  • Apparatus for threading a wire through a heated treatment zone comprising means defining said treatmentzone, said rneans being provided with a plurality of openings equally spaced along-a line to permit passage of a plurality of said wires through said zone, means selectively movable to each of said openings in a manner avoiding the other of'the openings whereby the latter said means can be movedpastopenings through which wires are passing while avoiding said wires, said latter means being engageable with one of'said wires in driving relation, means for driving .said latter; means in accelerating fashion and at a speed sufiicient to cause passage of said wire through said treatment zone so that mechanical strength properties of said one wire are sub-' stantially unafliected by passage through-said treatment zone,a pair of parallel shafts, each being on either side of said line of openings, and meansfor supporting one of said shafts from said means defining said-treatment zone for movement along the line of said opening in lookable intervals corresponding to
  • Apparatus as claimed in claim 2, wherein said means engageable with said wire includes a pair of rollers, each being supported for pivotal movement'by one of said shafts.
  • Apparatus as claimed in claim 3 wherein the means for driving the rollers includes means synchronizing the drive thereof, and a motor operatively coupled to one of the rollers in driving-relation.
  • Apparatus as claimed in claim. 3 comprising means coupled to each of said rollers for causing pivotal movement thereofabout the corresponding shaft'between positions corresponding to engaged and disengaged positions.
  • Apparatus as claimed in claim 4 wherein the means synchronizingthe drive of the rollers includes a pair of gearwheels, each being rigidly coupled to one of saidrollers and in meshing engagement with the other gearwheel with the rollers in position corresponding to said engaged position.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Tunnel Furnaces (AREA)
  • Ropes Or Cables (AREA)
  • Treatment Of Fiber Materials (AREA)
US118416A 1960-06-30 1961-06-20 Method of threading wires in muffles and apparatus for practicing same Expired - Lifetime US3163407A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR831565A FR1269268A (fr) 1960-06-30 1960-06-30 Procédé d'enfilage de fils dans les fours à moufles et appareillage permettant la mise en oeuvre de ce procédé

Publications (1)

Publication Number Publication Date
US3163407A true US3163407A (en) 1964-12-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
US118416A Expired - Lifetime US3163407A (en) 1960-06-30 1961-06-20 Method of threading wires in muffles and apparatus for practicing same

Country Status (5)

Country Link
US (1) US3163407A (enrdf_load_stackoverflow)
ES (1) ES268448A1 (enrdf_load_stackoverflow)
FR (1) FR1269268A (enrdf_load_stackoverflow)
GB (1) GB970730A (enrdf_load_stackoverflow)
LU (1) LU40310A1 (enrdf_load_stackoverflow)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1481886A (en) * 1922-07-19 1924-01-29 Michigan Steel Tube Products C Machine for feeding tubing
GB278459A (en) * 1926-07-16 1927-10-13 William Rose Improvements in apparatus for feeding strips or webs of paper, foil, or like material
US1653215A (en) * 1922-11-15 1927-12-20 Western Electric Co Apparatus for heat-treating metals
US1939320A (en) * 1931-10-14 1933-12-12 Cleveland Automatic Machine Co Stock feeding mechanism
US1960453A (en) * 1931-06-08 1934-05-29 Wolverine Tube Company Apparatus for bright annealing tubes
US2096119A (en) * 1936-04-13 1937-10-19 Lensch Rudolph Metal spray gun
US2294611A (en) * 1940-10-04 1942-09-01 Wheeling Steel Corp Handling and treatment of skelp or the like

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1481886A (en) * 1922-07-19 1924-01-29 Michigan Steel Tube Products C Machine for feeding tubing
US1653215A (en) * 1922-11-15 1927-12-20 Western Electric Co Apparatus for heat-treating metals
GB278459A (en) * 1926-07-16 1927-10-13 William Rose Improvements in apparatus for feeding strips or webs of paper, foil, or like material
US1960453A (en) * 1931-06-08 1934-05-29 Wolverine Tube Company Apparatus for bright annealing tubes
US1939320A (en) * 1931-10-14 1933-12-12 Cleveland Automatic Machine Co Stock feeding mechanism
US2096119A (en) * 1936-04-13 1937-10-19 Lensch Rudolph Metal spray gun
US2294611A (en) * 1940-10-04 1942-09-01 Wheeling Steel Corp Handling and treatment of skelp or the like

Also Published As

Publication number Publication date
GB970730A (en) 1964-09-23
ES268448A1 (es) 1961-10-01
FR1269268A (fr) 1961-08-11
LU40310A1 (enrdf_load_stackoverflow) 1961-08-24

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