EP0371988B1 - Appareil de vaporisation de metal - Google Patents

Appareil de vaporisation de metal Download PDF

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Publication number
EP0371988B1
EP0371988B1 EP88906458A EP88906458A EP0371988B1 EP 0371988 B1 EP0371988 B1 EP 0371988B1 EP 88906458 A EP88906458 A EP 88906458A EP 88906458 A EP88906458 A EP 88906458A EP 0371988 B1 EP0371988 B1 EP 0371988B1
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EP
European Patent Office
Prior art keywords
coolant
wires
guide tubes
wire
spaces
Prior art date
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Expired - Lifetime
Application number
EP88906458A
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German (de)
English (en)
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EP0371988A4 (en
EP0371988A1 (fr
Inventor
Thomas J. Fox
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Individual
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Individual
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Priority to AT88906458T priority Critical patent/ATE94106T1/de
Publication of EP0371988A1 publication Critical patent/EP0371988A1/fr
Publication of EP0371988A4 publication Critical patent/EP0371988A4/en
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Publication of EP0371988B1 publication Critical patent/EP0371988B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
    • B05B7/22—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc
    • B05B7/222—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc using an arc
    • B05B7/224—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc using an arc the material having originally the shape of a wire, rod or the like
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/131—Wire arc spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/28—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with integral means for shielding the discharged liquid or other fluent material, e.g. to limit area of spray; with integral means for catching drips or collecting surplus liquid or other fluent material

Definitions

  • This invention relates to a hand held gun for spraying metal in a forward direction according to the preamble of claim 1 (see US-A-4 512 513).
  • Such spray guns are commonly referred to in the art as arc spray guns or, for brevity, "arc guns.”
  • arc spray metallizing guns are well known and have been suitable for many purposes, experience has shown that they are not practical for certain tasks.
  • the spray rate of present day arc guns is such that it is too labor-intensive to use them for spraying large structures such as bridges.
  • Metallized spraying of such structures is a very desirable technique since it is possible to spray a zinc coating which will give cathodic protection which is more effective and more durable than conventional painting of such structures.
  • US 4 512 513 discloses an arc metal spray apparatus and a method to provide coatings on objects.
  • This apparatus comprises a base housing with driving, controlling and feeding means and a portable head.
  • An atomizing gas nozzle provides the transport of metal droplets thereby also becoming a coolant.
  • One object of the invention is to provide an arc spray gun which is suitable for large scale projects and is capable of delivering a higher spray rate than existing devices of this type.
  • Another object is to provide an arc spray gun which is relatively lightweight and is easily manipulated, yet is also able to deliver a metallizing spray at a high rate.
  • Another object is to provide an arc spray gun which is effective, relatively uncomplicated and easily maintained.
  • the first area of improvement to such an arc spray gun is the inclusion of means for cooling the electrical conductor by circulating a stream of coolant liquid along the electrical conductor.
  • a second improvement relates to a gun where guide tubes are located in forwardly convergent bores in an insulating gun head. The walls of the guide tubes are spaced radially from the tubes to provide spaces for coolant fluid around the guide tubes.
  • Wire feed rolls have their axes perpendicular relative to the wire guides and at an obtuse angle relative to each other.
  • each of these fittings has an internal coolant passage which is in communication with one of the coolant fluid spaces within the head.
  • the head may have a coolant passage which extends between the coolant fluid spaces so that a stream of coolant fluid may flow serially through the coolant fluid spaces.
  • the guide tubes extend through the conductive fittings and to provide compression fittings which are operable to affix the guide tubes to the conductive fittings.
  • compression fittings are releasable to permit longitudinal adjustment movement of the guide tubes, and the compression fittings include cap nuts which are threadedly connected to the conductive fittings.
  • the wire feed means includes a motor connected to a main drive shaft which has drive gear means mounted thereon for rotation therewith.
  • the drive gear means includes a first set of drive gear teeth and a second set of drive gear teeth.
  • a first wire feed wheel is connected to and driven by a first driven gear which has its teeth engaged with the first set of drive gear teeth.
  • a second wire feed wheel is connected to and driven by a second driven gear which has its teeth engaged with the second set of drive gear teeth.
  • the two driven gears are located on opposite sides of the shaft and the first and second sets of drive gear teeth face in opposite axial directions on the main drive shaft so that the driven gears and their respective feed wheels are rotated in directions which drive the wires forwardly in the wire guide means.
  • the driven gears and feed wheels rotatable about axes which, in plan view, lie at an obtuse angle relative to each other. Also, these rotational axes lie perpendicular to the guide tubes.
  • Fig. 1 is a partially sectioned perspective view of a metallizing gun constructed according to the invention.
  • Fig. 2 is a plan view of the apparatus of Fig. 1.
  • Fig. 3 is a partially sectioned elevational view of the gun of Fig. 1.
  • Fig. 4 is a front view showing only a forward portion of the gun of Fig. 1.
  • Fig. 5 is a sectional view as seen along the line 5-5 in Fig. 2.
  • Fig. 6 is a sectional view as seen along the line 6-6 in Fig. 2.
  • Fig. 7 is a plan view of the insulating body of the gun of Fig. 1.
  • Fig. 8 is a sectional view as seen along the line 8-8 in Fig. 7 to show the passages for spray shaping air.
  • Fig. 9 is a sectional view as seen along the line 9-9 of Fig. 7 to show the passages for atomizing air.
  • Fig. 10 is a sectional view of a modified type of spray shaping and shielding means for a metallizing gun.
  • the gun has a main body 2 mounted on the upper end of a handle 4.
  • a conventional hand-operated switch actuator 5 is mounted on the handle to deactivate the apparatus when the operator's grip is released.
  • a head 6 is mounted on the forward end of the body 2 and is arranged so that metal sprayed by the gun is discharged in a forward direction represented by the arrow 8.
  • Wires 10 and 12 are fed in a forward direction by a pair of feed wheels, one of which is shown at 14, into guide tubes, one of which is shown at 16.
  • the wires pass through the head 6 and emerge at tips 18 and 20 which constitute the forward ends of the guide tubes.
  • the wires are on converging paths and they are maintained at different electrical potentials so that an arc will be formed between the wires to heat them and melt their forward ends.
  • the wire material thus molten is impinged by a high velocity stream of atomizing air from the air outlet 22 at the forward end of the head 6, thus breaking the molten metal into small droplets and propelling them as a spray for deposition on a surface.
  • An airborne stream of molten metal droplets is propelled forwardly until it strikes the surface of the workpiece which is being sprayed.
  • a shield 27 is mounted on the head 6 in order to surround the area of the electric arc.
  • the head 6 is formed of an electrically insulating plastic material. It has a forward truncated conical portion 29, a cylindrical portion 31 which is externally threaded, and a rear portion which, as shown in Fig. 5, is attached by screws 33 to the main body 2. As shown in Fig. 1, a cap 35 is removably mounted on an unthreaded section of the cylindrical portion 31, and the shield 27 is threaded onto the portion 31. A pair of spray shaping nozzles 24 and 26 are affixed to the cap 35, and these nozzles direct converging streams of spray-shaping air into and downstream of the droplet-forming region. This produces a fan shaped spray. For convenience of illustration, the cap 35 is not shown in Figs. 2-5.
  • An atomizing air source is connected to the gun by a conduit 28, and spray-shaping air for the nozzles 24 and 26 is supplied by a conduit 30.
  • a coolant supply unit sends a liquid or gaseous coolant to the gun through a conduit 32, and this unit receives a return flow of the coolant fluid from the conduit 34.
  • a conventional electric power source is connected to a motor in handle 4 by a cord (not shown), and the arc-generating electrical power source is connected to the gun by braided copper conductors 36 and 38 which extend through the coolant conduits 32 and 34.
  • Figs. 2, 3 and 6 The means for guiding and feeding the wires is best shown in Figs. 2, 3 and 6. Referring to Fig. 2, it will be seen that the wires are guided lengthwise along two axes which are mutually convergent in a forward direction so that, in the area of the electric arc, the forward ends of the wire will lie proximate to each other.
  • each wire guide tube 16 receives the wire 10 at its rear end and releases the wire at a tip 18 at the forward end of the guide tube.
  • the guide tube extends concentrically through a bore in the head 6, and this bore has sections of three different diameters.
  • the small diameter forward portion 40 of the bore snugly receives the guide tube and is sealed thereagainst by means of an O-ring 42.
  • the intermediate portion 44 of the bore is somewhat larger than the guide tube in order to provide a radial spacing and a cylindrical passage for coolant fluid as will be later described.
  • the large diameter rear portion 46 has a diameter corresponding approximately to the outside diameter of a cylindrical extension 48 of a fitting 50, the functions of which will be subsequently described.
  • An O-ring 52 provides a seal between the bore portion 46 and extension 48.
  • the fitting 50 is formed of an electrically conductive material such as brass, and it is mounted on the head 6 by a screw 53.
  • the fitting 50 has a horizontal bore 54 which is intersected by a vertical bore 56.
  • the forward portion of bore 54 is larger than the guide tube 16, thus providing a cylindrical space which is an extension of and communicates with the cylindrical coolant fluid passage in the head 6.
  • the rear end of the bore 54 has a diameter approximately equal to the outside diameter of the guide tube 16, and this lies within a fitting portion 58 which is externally threaded to receive the internal threads of a cap nut 60.
  • the principal electrical connection between the fitting 50 and the guide tube 16 is in the area or zone within the fitting portion.
  • the coolant passage around the guide tube is in the area between this electrical connection and the arc zone at the front of the gun.
  • a brass compression ring 62 is located within the cap nut.
  • the compression fitting comprising the cap nut 60 and compression ring 62 is usually tightened to affix the guide tube 16 to the fitting 50. However, loosening of the cap nut 60 releases the compression fitting to permit longitudinal and/or rotational adjustment movement of the guide tube 16.
  • the rear end of the tube 16 is received in an opening formed in a flange 39 on the main body 2.
  • FIG. 3 only shows one guide tube 16, it will be understood that the guide tube 16A on the right side of the gun is constructed and mounted in a similar manner.
  • each wire at the gun moves in an unbent linear path to the arc zone.
  • Fig. 2 where it will be noted that the rotational axes of the feed wheels 14 and 14A, coincident with the section line 6-6, lie at an obtuse angle relative to each other, and they also lie perpendicularly to the linear paths established by the guide tubes 16 and 16A.
  • the cooling means for the gun includes a fluid circulating unit which is connected to the gun by the supply and return conduits 32 and 34 respectively.
  • the supply conduit is affixed to a tube 64 which is integral with the fitting 50.
  • liquid or other coolant fluid from the supply conduit 32 will flow in the direction of arrow 66 into the cylindrical space which extends around and longitudinally of the guide tube 16.
  • the fluid exits this space via a transverse bore 68 which can also be seen in Figs. 4 and 5.
  • an arrow 70 indicates the direction of coolant fluid movement in this area.
  • the right side of the gun has a fitting 50A shown in Fig. 2 which is identical to the fitting 50 and also provides a cylindrical fluid passage around the corresponding guide tube 16A. Therefore, the coolant fluid which passes transversely through the bore 68 into the coolant space around the tube 16A then flows rearwardly around the tube 16A until it arrives at the vertical bore which corresponds with the bore 56 shown in Fig. 3. From this point, the coolant fluid flows downwardly into the return conduit 34 shown in Fig. 1 which then carries the fluid to the coolant circulator.
  • the circulating unit can include a heat exchanger which is cooled by air, water, or a refrigeration system.
  • the coolant fluid serves the important function of cooling the electrical conductors 36 and 38 which provide the arc-forming electrical potential difference between the tips 18 and 20 and their respective wires.
  • these electrical conductors are elongated braided copper wires and they have a generally rectangular transverse cross section.
  • the electrical conductor 36 is electrically connected to the tube 64 of fittings 50 by silver soldering at 72.
  • the coolant is circulated through the conduits 32 and 34 in order to cool the electrical conductors which, if uncooled, would overheat due to the very high current required for high spray rates.
  • the body 2 and head 6 have a series of internal passages which carry the atomizing air and the spray shaping air to the outlets 22, 24 and 26.
  • the passages for the atomizing air are best shown in Figs 5, 7 and 9. Referring to Figs. 7 and 9, it will be seen that the atomizing air initially moves through a horizontal bore 74 to a vertical bore 76 which has a plug 78 obstructing its upper end, and thence through a horizontal bore 79, the forward end of which terminates at an O-ring seat 80. As shown in Fig. 5, seat 80 aligns with a similar O-ring seat 82 formed in the head 6. From this area a bore 84 extends forwardly to the atomizing air outlet 22. As shown in Fig. 4, this outlet preferably has an oval shape and it is located centrally between the guide tips 18 and 20.
  • the passages for the spray shaping air can be seen best in Figs. 5, 7 and 8. This air passes sequentially through the horizontal bore 86, a vertical bore 88 which is capped by a plug 90, and a pair of horizontal bores 92 and 92A. The air then passes into the diverging bores 96 and 96A which are shown in Fig. 5. Finally, the spray shaping air is carried by the spray-shaping nozzle tubes 24 and 26 which have forwardly inclined mutually convergent axes for shaping the spray which emerges from the gun.
  • the wire supply is preferably of the push-pull type wherein the wire comes from a stationary supply which is spaced from the spray gun.
  • the wire supply has pusher rolls 97 which engage the wires 10 and 12 and drive them toward the gun.
  • a flexible wire guiding conduit 99 has its opposite ends affixed to the wire supply and to the gun so that it acts in some respects like a Boden wire system.
  • the wire feed rolls 97 connected to motor 101 at the wire supply are operated, the wire is pushed forwardly to the feed rolls 14 which pull the wire and deliver it toward the head.
  • the effect of the pusher rolls is to apply compressive forces to the wires within the wire guiding conduits, and also to apply tensile forces to the conduits 99 themselves.
  • the use of pusher rolls reduces the demands on the wire feeding motor in the gun handle, thus making it possible to use a very lightweight motor in the gun.
  • the wires 10 and 12 are fed along their respective longitudinal axes by two substantially identical mechanisms which are mirror images of each other.
  • the wire 10 is frictionally engaged between the feed wheel 14 and an idler wheel 100 which is mounted on a swinging plate 102.
  • the plate 102 is pivotally mounted on a screw 104 and it is biased in a clockwise direction by a compression spring 105.
  • the biasing force is adjustable by manually rotating the knurled adjustment knob 106 which is integral with a spring-supporting pin 108 which is threaded into a mounting plate 109 on the body 2.
  • rotation of the adjustment knob 106 will change the degree of compression of the spring 105, thus changing the loading force which the idler wheel 100 exerts on the wire 10 to hold the wire against the feed wheel 14.
  • a small electric motor is housed within the handle 4. This motor rotationally drives a vertical shaft 110 which is mounted on ball bearing assemblies 112 and 114, and it carries a lower bevel gear 116 and an upper bevel gear 118.
  • the left feed wheel 14 is mounted on a shaft 120 which is rotationally supported on a pair of ball bearing units 122 and 124. At the right end of the shaft, there is a bevel gear 126 with teeth which mesh with the teeth of the lower bevel gear 116 on the motor-driven shaft 110. Thus, the upper wire-engaging portion of the wheel 14 is rotated in a forward direction to feed the wire through the guide tube and to the fusion area.
  • the right feed wheel 14A must also be driven so that its upper wire-engaging surface is moving in a forward direction. Such motion is achieved by mounting the feed wheel 14A on a shaft 128 which has, at its left end, a bevel gear 130 with teeth which mesh with the teeth of the upper bevel gear 118.
  • the shaft 128 is rotationally supported by the ball bearing units 132 and 134.
  • the rotational axes of the shafts 120 and 128 are at an obtuse angle relative to each other. These rotational axes are perpendicular to their respective wires and guide tubes.
  • the wire-engaging circumferences of the feed wheels 14 and 14A are electrically insulated from the shafts 120 and 128. Such insulation may be provided, for example, by providing the wheels with internally threaded plastic hubs which are threaded onto the respective shafts. Metal rings which contact the wires are affixed to the plastic hubs.
  • Figs. 1-9 differs slightly from the version shown in Figs. 2-9.
  • the upper surface of head 6 has a raised central portion
  • the body 2 has an upper surface which is flat except for a raised forward portion
  • the swing plate has a rear extension which receives the pivot screw 104.
  • the cone 27, cap 35 and spray-shaping nozzles 24 and 26 are removed from the head and replaced by an assembly, shown in Fig. 10, which includes a cone 136 and a shield 137. Air is introduced into the cone from the bores 96 and 96A. The resulting spray strikes a smaller area than the fan shaped spray, and a smoother coating is produced.
  • the cone 136 has a circumferentially protruding flange at its base which is received in a corresponding recess on the internal surface of the spray shield 137.
  • the invention is particularly advantageous because it provides a relatively small, easily manipulable gun capable of delivering a very high spray rate which, in some instances, can be as much as seven to eight times the spray rate normally achieved with existing lightweight handheld guns.
  • a gun made according to the present invention weighs less than 1.25 kg (four and one half pounds). It has a length of approximately 20 cm (eight inches), a height of approximately 21.4 cm (eight and one half inches) including the handle, and a width of about 11.3 cm (four and one half inches).
  • the conduits 32, 34 and cables 36, 38 are 24 m (seventy feet) long, and water is circulated through the conduits at a rate of 9 l/min (two gallons per minute).
  • the temperature difference between the incoming and outgoing water is twenty-five degrees C.
  • the electric power source delivered 1400 amperes at 50 volts, making it possible to spray aluminum wire of 0.3 cm (1/8 inch) diameter at a rate of 40 kg (80 pounds) per hour.
  • the gun is capable of spraying wire having diameters from 0.15 to 0.3 cm (1/16 to 1/8 inch), and numerous metal compositions such as aluminum, zinc, steel, bronze, babbit and other alloys.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electromagnetism (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Nozzles (AREA)

Abstract

Un pistolet de métallisation à vaporisation en arc électrique est pourvu de conducteurs électriques (36, 38) qui sont refroidis par la mise en circulation d'un courant de liquide réfrigérant sur la longueur des conducteurs. Le mécanisme d'alimentation en fil métallique comprend un moteur (101) pourvu d'un arbre (110) portant deux engrenages d'entraînement (116, 118). L'un des engrenages d'entraînement (116) est en prise avec un engrenage commandé (128) relié à une première roue d'alimentation en fil métallique (14) et l'autre engrenage d'entraînement (118) est relié à un engrenage commande (120) relié à une seconde roue d'alimentation en fil métallique (14A). Les engrenages commandés sont disposés sur des côtés opposés de l'arbre et les dents des deux engrenages d'entraînement s'étendent dans des directions axiales opposées sur l'arbre. Ainsi, les engrenages commandés et les roues d'alimentation (14, 14A) qui y sont reliées tournent tous dans des directions permettant l'entraînement des fils métalliques (10, 12) vers l'avant dans des guides de fils convergents (16, 16A).

Claims (8)

  1. Pistolet-pulverisateur à main pour la pulverisation de métal en direction avant comprenant:
    - une tête (6) formée d'un materiau isolant électriquement,
    - deux tubes conducteurs électriques (16,16A) utilisable comme moyens de guidage de fil, afin de guider au moins deux fils en métal (10,12) en direction longitudinal le long de deux voies convergant mutuellement en direction avant, les extremités avants des fils étant proche l'une de l'autre,
    - des moyens d'amenée de fil (14, 100, 102, 104, 105, 106, 108, 109) pour mouvoir les fils en direction avant dans les tubes de guidage de fil (16,16A),
    - des moyens de circuit électriques pour créer une difference de tension électrique entre les deux fils (10,12) pour former un arc qui s'étend entre les deux fils (10,12) afin de fondre les extremités avant des fils dans une zone d'arc, et
    - des moyens d'orientation (24,26) pour diriger un flux de liquide gazeux aux extremités avant (18,20) des fils pour projecter des gouttelettes du métal fondu en direction avant (8),
    characterisée en ce que
    - une poignée (4) est prévue qui peut être saisie par l'opérateur,
    - la tête (6) présente une paire d'alésages (54) s'étendant au travers de celle-ci,
    - les tubes de guidage de fil (16,16A) et les moyens d'amenée de fil sont disposés de manière à guider les fils (10,12) et à les amener dans le pistolet le long des voies linéaires sans courbures, les moyens de guidage de fil comprennent des rouleaux d'amenée (14,100) disposées sur le pistolet près des tubes de guidage (16,16A), les rouleaux d'amenée s'engrenant avec les fils (14,100) et guider celles-ci dans les tubes de guidage de fil (16,16A) en direction avant, et les rouleaux d'amenée (14,100) sont mobiles sur des axes de rotation essentiellement perpendiculaires aux voies linéaires des fils (10,12) dans le pistolet,
    - les moyens de circuit électriques comprennent des tubes de guidage de fil (16,16A) et des moyens de connection électriques, qui relient un conducteur électrique oblongue (36,38) à une zone de raccord aux tubes de guidage de fil (16,16A),
    - les alésages (54) dans la tête (6) comprennent des paroies qui sont espacées radialement des tubes (16,16A), pour faire de la place pour le liquide de refroidissement autour des tubes de guidage (16,16A), les espacements se trouvant entre les moyens de connection et la zone courbe,
    - les espacements comprennent des extrémités avant (40), où les tubes de guidage (16,16A) sont étanchés par rapport à la tête (6), des ouvertures d'admission et d'échappement de liquide de refroidissement espacées axialement dans les espacements d'agent de refroidissement pour l'intro-duction et l'évacuation de liquide de refroidissement dans les/des espacements d'agent de refroidissement, et
    - des moyens sont prévus pour mouvoir un liquide de refroidissement (32,34,64) au travers les espacements d'agent de refroidissement, les tubes de guidage (16,16A) comprennent des paroies externes exposées aux espacements d'agent de refroidissement, afin de garantir un transfert de chaleur du tube de guidage (16,16A) au liquide de refroidissement.
  2. Pistolet-pulverisateur selon la revendication 1, characterisée en ce que les moyens de circuit électriques comprennent deux élements conducteurs électriques (50,50A) fixés à la tête, chacun des élements conducteurs comprennent un passage de refroidissement interne, étant en contact avec un des espacements pour le liquide de refroidissement.
  3. Pistolet-pulverisateur selon la revendication 2, characterisée en ce que les tubes de guidage (16,16A) s'étendent au travers les élements conducteurs (50,50A).
  4. Pistolet-pulverisateur selon la revendication 3, qui comprend des moyens d'ajustage de compression (60,62) par lesquelles les tubes de guidage (16,16A) peuvent être fixés aux moyens conducteurs (50,50A), les moyens d'ajustage de compression étant détachable pour permettre un mouvement d'ajustage des tubes de guidage, et les moyens d'ajustage de compression présentant des écroux-raccords (60) connectés aus élements conducteurs par des filetages.
  5. Dispositif selon la revendication 1, comprenant des moyens d'amenée d'agent de refroidissement qui sont reliée aux ouvertures d'admission d'agent de refroidissement (64).
  6. Pistolet-pulverisateur selon l'une des revendications 1 - 5, characterisée en ce que les tubes de guidage (16,16A) comprend des extrémités avant (18,20), espacées des extrémités avant des espacements de l'agent de refroidissement pas plus d'environ 2 cm.
  7. Pistolet-pulverisateur selon l'une des revendications 1 - 5, characterisée en ce que la tête (6) comprend un passage d'agent de refroidissement (68), qui s'étend entre les espacements pour le liquide de refroidissement.
  8. Pistolet-pulverisateur selon l'une des revendications 1 - 5 en connection avec des moyens d'amenée de fil espacés du pistolet-pulverisateur, les moyens d'amenée de fil présentant des moyens de rouleaux de poussée pour saisir les fils et pour les transporter vers le pistolet.
EP88906458A 1987-06-25 1988-06-24 Appareil de vaporisation de metal Expired - Lifetime EP0371988B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88906458T ATE94106T1 (de) 1987-06-25 1988-06-24 Metallspritzvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US6617387A 1987-06-25 1987-06-25
US66173 1987-06-25

Publications (3)

Publication Number Publication Date
EP0371988A1 EP0371988A1 (fr) 1990-06-13
EP0371988A4 EP0371988A4 (en) 1991-10-02
EP0371988B1 true EP0371988B1 (fr) 1993-09-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP88906458A Expired - Lifetime EP0371988B1 (fr) 1987-06-25 1988-06-24 Appareil de vaporisation de metal

Country Status (3)

Country Link
EP (1) EP0371988B1 (fr)
DE (1) DE3883983T2 (fr)
WO (1) WO1988010168A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4042276A1 (de) * 1990-12-31 1992-07-02 Castolin Sa Vorrichtung und verfahren zum herstellen von schutzschichten
DE102009031360A1 (de) * 2009-07-02 2011-01-05 Bayerische Motoren Werke Aktiengesellschaft Drahtverbraucher mit einer Drahtfördereinrichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2749176A (en) * 1952-09-18 1956-06-05 Arnold Otto Meyer Electro metal spraying pistol
LU34348A1 (fr) * 1955-05-02
US3312566A (en) * 1962-08-01 1967-04-04 Giannini Scient Corp Rod-feed torch apparatus and method
CH607540A5 (fr) * 1976-02-16 1978-12-29 Niklaus Mueller
US4508951A (en) * 1982-08-19 1985-04-02 Richard B. Rehrig Fluid baffle assembly for a water-cooled welding torch
US4512513A (en) * 1982-10-18 1985-04-23 Rogers Frank S Arc metal spray apparatus and method

Also Published As

Publication number Publication date
EP0371988A4 (en) 1991-10-02
DE3883983D1 (de) 1993-10-14
WO1988010168A1 (fr) 1988-12-29
DE3883983T2 (de) 1994-04-21
EP0371988A1 (fr) 1990-06-13

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