Fronius International Gmbh

Florian Silbermayr

Heribert Pauser

Daniel Platzer

Harald Langeder

Wolfgang Haberler

Alexander Speigner

Alexander Eder

Max Stöger

Thomas Stehrer

Robert Nimmervoll

Michal Heinrich

A method and a device for generating a plasma jet under atmospheric pressure for the surface treatment of workpieces has a supply line for the plasma-capable medium, and an apparatus for electrically exciting the plasma-capable medium by an electric arc periodically ignited between a cathode and an anode constructed as a nozzle. To achieve a highly effective plasma jet even at relatively low temperatures of the plasma jet, a heating apparatus for preheating the plasma-capable medium is arranged upstream of the apparatus for electrically exciting the plasma-capable medium.

Method and device for generating a plasma jet

The invention relates to a vapor plasma burner () comprising a burner handle () and a burner base (). Inside the burner base (), a liquid feed pipe (), a heating device (), a burner chamber (), a cathode (), connected to a cathode support (), and an anode () which is configured as a nozzle () and has an exit opening () are arranged. The invention also relates to a cathode () and to a nozzle () for such a vapor plasma burner (). The aim of the invention is to provide a vapor plasma burner () that can be optimally ignited and the wearing parts of which can be easily removed. For this purpose, the cathode support () is configured together with the cathode () as an axially displaceable piston and is connected to a spring element () in such a manner that the cathode (), in the rest position, is forced against the nozzle () and that the cathode support () communicates with the liquid feed line () in such a manner that during operation, the cathode () is lifted off the nozzle () when water is supplied so that an electric arc can be ignited between the cathode () and the anode ().

Vapor plasma burner

The invention describes a method for transforming a liquid () into a gaseous state for a cutting process with a water-steam cutting device (), consisting of a torch (), an evaporator (), an energy supply and a supply line () for a liquid (), an appropriate temperature () being generated for evaporation of the liquid (). To create a method of this type it is now provided that the temperature () is regulated during operation such that a sensor () senses the temperature () of the evaporator () and transmits it to a regulation unit which correspondingly supplies a heating element () with the energy necessary and by which a required pressure () of the liquid () supplied to the torch () is regulated so that an approximately constant temperature () of the evaporated liquid () is provided for a cutting process.

Water-steam cutting process and torch therefor

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Eberstalzell, Austria

Florian Silbermayr