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EP0271032A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Method for depositing an inner coating in tubes or similar hollow spaces with a small diameter, and plasma spray gun therefor

Assignee: ECG Immobilier SA
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Filing: 1987-12-05
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Granted: —
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Expires: 2007-12-05
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Abstract

Abstract Translated from German Ein Plasmaspritzbrenner mit einer eine Elektrode bilden­den, einen Düsenkanal (72,72a) enthaltenden, insbesondere ano­disch geschalteten Spritzdüse (52) und einer dieser zugeord­neten zweiten Elektrode (60) in einem gegen die Spritzdüse elektrisch isolierten Brennerteil eines Brennerarms, der Strömungskanäle für Arbeitsgas sowie für Kühlmedium auf­weist, soll zur Verbesserung der Innenbeschichtung sehr enger Rohre od.dgl. Hohlräume verbessert werden, insbe­sondere soll die Einstellbarkeit seines Lichtbogens und dessen Relation zur Zone der Ausschmelzung gesteuert und die Kühlung optimiert werden. A plasma spray burner with an electrode forming a nozzle nozzle (72, 72a), in particular anodically connected spray nozzle (52) and a second electrode (60) assigned to it, in a burner part of a burner arm that is electrically insulated from the spray nozzle, the flow channels for working gas and for Has cooling medium, should improve the inner coating of very narrow pipes or the like. Cavities are to be improved, in particular the adjustability of its arc and its relation to the zone of melting are to be controlled and the cooling to be optimized. Hierzu ist der Strömungskanal (39) für das Arbeitsgas an einen die zweite Elektrode (60) durchsetzenden Kanal (59) angeschlossen und der Düsenkanal (72, 72 a ) zumin­dest im Bereich seiner Mündung (73) zur Längsachse A des Brennerarms bzw. des Strömungskanals (39) in einem Winkel (t) geneigt. For this purpose, the flow channel (39) for the working gas is connected to a channel (59) passing through the second electrode (60) and the nozzle channel (72, 72 a ) at least in the region of its mouth (73) to the longitudinal axis A of the burner arm or the flow channel (39) inclined at an angle (t).

Inventors

  • 👤 Niklaus Ing. Müller

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-30 20:33
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/32; H05H1/34; B; B05; B05B; B05B7/00; B05B7/16; B05B7/22; B05B7/222; B05B7/226; C; C23; C23C; C23C4/00; C23C4/12; C23C4/134; C23C4/14; C23C4/16; H05H1/28; H05H1/3436; H05H1/3463; H05H1/42

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