DE8900636U1 - Contact nozzle - Google Patents
Contact nozzleInfo
- Publication number
- DE8900636U1 DE8900636U1 DE8900636U DE8900636U DE8900636U1 DE 8900636 U1 DE8900636 U1 DE 8900636U1 DE 8900636 U DE8900636 U DE 8900636U DE 8900636 U DE8900636 U DE 8900636U DE 8900636 U1 DE8900636 U1 DE 8900636U1
- Authority
- DE
- Germany
- Prior art keywords
- nozzle
- egr
- contact nozzle
- contact
- nozzle according
- 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.)
- Expired
Links
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000010891 electric arc Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Plasma & Fusion (AREA)
- Electromagnetism (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Nozzles (AREA)
Description
o 3· &aacgr; »· al o 3· &aacgr; »· al
"Kontaktdüse""Contact nozzle"
Die Erfindung richtet sich auf eine Kantaktdüse in Lichtbogen-Spritzgeräten zum Beschichten von Drähten in einem elektrischen Lichtbogen, mit einer die Düse durchsetzenden Innenbohrung.The invention relates to a contact nozzle in arc spraying devices for coating wires in an electric arc, with an internal bore passing through the nozzle.
Zur Ausbildung derartiger Düsen sei lediglich als Beispiel auf die U3-PS 3 901 411 und die DE-PS 851 708 hingewiesen. Wesentlich bei der Gestaltung derartiger Düsen ist zum einen die genaue Führung der zu verspritzenden Drähte und zum anderen die funktionssichere Übertragung der elektrischen Ströme auf die Drähte zur Bildung des Lichtbogens. Da aus Vorschubgründen die Innenbohrungen der Düsen geringfügig größer sein müssen als der Drahtdurchmesser, liegt der vorgeschobene und zu verspritzende Draht nicht immer genau an, so daß der Ort der StromUbertragungen nicht exakt definiert ist. Es kommt daher zu Abbrennungen im Inneren der Düsen, die dann nach einer gewissen Betriebsdauer ausgewechselt werden müssen. Werden die Kontaktdüsen dann nicht ausgewechselt, kann es zu kurzfristigem Abreißen des Lichtbogens kommen und damit zur Beeinflussung der Oberflächenqualität der bespritzten Oberfläche, die dann aufwendig nachgearbeitet werden muß.For the design of such nozzles, reference is made to U3-PS 3 901 411 and DE-PS 851 708 as examples. The key factors in the design of such nozzles are, on the one hand, the precise guidance of the wires to be sprayed and, on the other hand, the reliable transmission of the electrical currents to the wires to form the arc. As the inner bores of the nozzles have to be slightly larger than the wire diameter for feed reasons, the advanced wire to be sprayed does not always fit exactly, so that the location of the current transmission is not exactly defined. This leads to burns inside the nozzles, which then have to be replaced after a certain period of operation. If the contact nozzles are not replaced, the arc can break off for a short time and thus affect the surface quality of the sprayed surface, which then has to be reworked at great expense.
Aufgabe der Erfindung ist die Schaffung einer Lösung, mitThe object of the invention is to create a solution with
r · · ar · · a
der ein genau definierter Kontakt zwischen Draht und Düse gewährleistet wird.which ensures a precisely defined contact between wire and nozzle.
Mix einer Kontaktdüse der eingangs bezeichneten Art wird diese Aufgabe gemäß der Erfindung dadurch gelöst, daß di< Düsenspitze mit einem bis zur Innenbohrung reichendenMix a contact nozzle of the type described above, this object is achieved according to the invention in that the nozzle tip is provided with a
Längsschlitz zur Bildung eines die Innenbohiung federndLongitudinal slot to form a spring-loaded inner bore
ItIt
verjüngenden Bereiches versehen ist.tapered area.
Durch die Bildung eines nach innen federnden Bereiches an der Düsenspitze wird erreicht und gewährleistet, daß permanent ein Kontakt zwischen Düse und durchgefördertem Draht besteht, so daß die Bildung kleiner, den Abbrand bedingender Lichtbogen im Inneren der Düsenepitzen vermieden wird. Die Lebensdauer einer solchen Düse wird zum einen daiti '■ t ganz erheblich verlängert , zum anderen wird das Abbrander-By creating an inwardly springy area at the nozzle tip, it is ensured that there is permanent contact between the nozzle and the wire being fed through, so that the formation of small arcs inside the nozzle tips that cause burn-off is avoided. The service life of such a nozzle is extended considerably on the one hand, and the burn-off
&Mgr; gebnis und damit die Qualität der zu beschichtenden&Mgr; result and thus the quality of the coated
•s.*: Oberfläche positiv beeinflußt.•s.*: Surface positively influenced.
&Ggr; In Ausgestaltung ist vorgesehen, daß der Schlitz einer Ra-&Ggr; In an embodiment, it is provided that the slot of a Ra-
■ dialebene die Düsenspitze durchsetzt.■ dial plane penetrates the nozzle tip.
Grundsätzlich kann die Federwirkung direkt in die Düse bei deren Herstellung, etwa durch Schmieden od. dgl., einge-In principle, the spring effect can be incorporated directly into the nozzle during its manufacture, for example by forging or similar.
< bracht werden. Eine einfache Möglichkeit ist aber das Vor< A simple possibility is to
sehen eines elastischen Elementes, z.B. eines Federringee, der zweckmäßig in einar umlaufenden Nut gesichert ist.see an elastic element, e.g. a spring ring, which is conveniently secured in a circumferential groove.
Auch diese Gestaltungen sind nach der Erfindung vorgese- ": hen. '.',jThese designs are also provided according to the invention. ' . ',j
Natürlich ist die Erfindung nicht darauf beschränkt, lediglich einen Schlitz vorzusehen, am Umfang können mehrere
Länc·sschlitze eingebracht sein, etvrs air. kreuzför~iqsr Dop= ^
pelschlitz, so daß sich an der Diisenspitze vier Finqer ausbilden .Of course, the invention is not limited to providing only one slot, several can be provided on the circumference
Longitudinal slots should be introduced, preferably a cross-shaped double slot, so that four fingers are formed at the nozzle tip.
Die Erfindung ist nachstehend anhand de' Zeichnung beispielsweise
näher erläutert. Diese zeigt in der einzigen
Abbildung eine Düsenspitze nach der Erfindung.The invention is explained in more detail below with reference to the drawing. This shows in the only
Illustration of a nozzle tip according to the invention.
Die mit 1 bezeichnete Diisenspitze weist im dargestellten
Beispiel einen die Radialebene durchsetzenden Längsschlitz
2 auf, der von dem freien Ende 3 der Düsenspitze aus in
der Mittelebene eingebracht ist. im Uberganqsbereich zwischen
der sich verjüngenden Diisenspitze 3 und dem zylindrischen Bereich der Düse 1 ist eine umlaufende Nut 4 eingebracht,
in die ein geschlitzter Federring 5 eingelegt '.st,
derart, daß die durch die Schlitzung entstandenen Halbkör- .·*The nozzle tip marked 1 has in the illustrated
Example of a longitudinal slot penetrating the radial plane
2, which extends from the free end 3 of the nozzle tip into
the central plane. In the transition area between the tapered nozzle tip 3 and the cylindrical area of the nozzle 1, a circumferential groove 4 is introduced, into which a slotted spring ring 5 is inserted.
such that the half-bodies created by the slitting .·*
per la und Ib aufeinander zugetrieben werden, derart, daß | die gestrichelt angegebene Innenbohrung 6 sich im Bereich % per la and Ib are driven towards each other in such a way that | the dashed inner bore 6 is in the range %
der Diisenspitze 3 verjüngt. athe nozzle tip 3 is tapered. a
Claims (1)
dadurch gekennzeichnet,2. Contact nozzle according to claim 1,
characterized,
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8900636U DE8900636U1 (en) | 1989-01-21 | 1989-01-21 | Contact nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8900636U DE8900636U1 (en) | 1989-01-21 | 1989-01-21 | Contact nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE8900636U1 true DE8900636U1 (en) | 1989-03-16 |
Family
ID=6835237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE8900636U Expired DE8900636U1 (en) | 1989-01-21 | 1989-01-21 | Contact nozzle |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE8900636U1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4102158B4 (en) * | 1991-01-25 | 2009-02-12 | Sulzer Metco Osu Gmbh | Device for guiding and contacting arc-melting spray wires |
| DE102020100460A1 (en) * | 2020-01-10 | 2021-07-15 | Gebr. Heller Maschinenfabrik Gmbh | Arc torch with an electrical connection device |
-
1989
- 1989-01-21 DE DE8900636U patent/DE8900636U1/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4102158B4 (en) * | 1991-01-25 | 2009-02-12 | Sulzer Metco Osu Gmbh | Device for guiding and contacting arc-melting spray wires |
| DE102020100460A1 (en) * | 2020-01-10 | 2021-07-15 | Gebr. Heller Maschinenfabrik Gmbh | Arc torch with an electrical connection device |
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