Kjellberg Finsterwalde Plasma Und Maschinen Gmbh

Kjellberg-stiftung

Kjellberg Finsterwalde Plasma and Maschinen Gmbh

Ralf-Peter Reinke

Volker Krink

Frank Laurisch

Timo Grundke

Thomas Hassel

Martin Kroschwald

Thomas Steudtner

Katrin Jehnert

Friedrich-Wilhelm Bach

A gas conducting unit for a gas-cooled plasma cutting torch, wherein the gas-conducting unit is single-part or multi-part tubular or annular. The gas-conducting unit comprises a single-part or multi-part tubular or annular gas-conducting unit body with a longitudinal axis L. In a wall of the gas-conducting unit body, there are situated at least one opening, which is inclined by an angle δ in a range of ±15° with respect to the longitudinal axis L, and at least one second opening, which is inclined radially with respect to the longitudinal axis Lor which, in a radial plane, is inclined at an angle γ in the range of ±30° from the radial to the longitudinal axis L

Electrodes for gas- and liquid-cooled plasma torches

The invention relates to an electrode for an especially gas-cooled plasma torch, in particular plasma cutting torch, the electrode comprising: an elongated electrode body with an open end and a closed end, the ends defining a longitudinal axis L, and an emission insert in the closed end, a cavity extending in the electrode body from the open end of the electrode body towards the closed end, the cavity fluidically communicating with the outer face of the electrode body which is radial with regard to the longitudinal axis, via at least one opening in its wall or in the front solid portion of the closed end. The invention further relates to a system consisting of said electrode and cooling tube, to a gas conducting unit, a plasma torch comprising same, a method for conducting gas in a plasma torch and a method for operating the plasma torch.

A method for conducting gas in a gas-cooled plasma torch wherein the plasma torch has a plasma torch body which holds an electrode with an open end and a closed end. A cavity extends from the open end in the direction of the closed end, and which, with a spacing in an axial direction, holds a nozzle by means of a nozzle holder. The nozzle has a central opening with an upstream inlet end, into which the electrode projects, and with an outlet end with a nozzle bore and is surrounded by a nozzle cap and/or a nozzle protection cap. The plasma torch body has an opening for a gas feeder, which opening is fluidically connected to a cooling tube which projects into the open end of the electrode.

An electrode holder for an arc plasma torch includes an elongate holder body. The holder body includes a holder end for receiving an electrode and a hollow interior. An internal thread is positioned in the hollow interior for screwing in a rear end of said cooling tube. A cylindrical inner surface adjoins the internal thread for centering the cooling tube relative to the electrode holder.

Cooling pipes, electrode holders and electrode for an arc plasma torch

The invention relates to an electrode structure for plasma cutting torches, wherein a recess or borehole open at one side in the direction of a workpiece to be processed is formed in an electrode holder or in a holding element for receiving an emission insert, in which recess or borehole the inserted emission insert can be fastened in a force transmitting manner, in a shape-matching manner and/or with material continuity. At least one pressure equalization passage and/or an at least temporarily active pressure equalization passage is present between a hollow space formed in a recess or borehole and the emission insert and the environment through the emission insert and/or between an outer jacket surface region of the emission insert and the inner wall of the recess or borehole, which is formed in the holding element or in the electrode holder ().

Electrode structure for plasma cutting torches

A cooling tube for an arc plasma torch, comprising an elongate body with an end which can be arranged in the open end of an electrode, and a coolant duct extending therethrough, characterized in that at said end there is a bead-like thickening of the wall of the cooling tube pointing inwards and/or outwards, and an arrangement of a cooling tube for an arc plasma torch, comprising an elongate body with a rear end which can be releasably connected to an electrode holder of an arc plasma torch, and a coolant duct extending therethrough, and an electrode holder for an arc plasma torch, comprising an elongate body with an end for receiving an electrode and a hollow interior, and characterized in that on the outer surface of the cooling tube at least one projection is provided for centring the cooling tube in the electrode holder.

A plasma torch head, a plasma torch shaft and a plasma torch for providing a quick and simple possibility of changing the plasma torch head are described.

Plasma torch head, plasma torch shaft and plasma torch

Connection between a plasma torch wearing part and a plasma torch wearing part holder, plasma torch wearing part and plasma torch wearing part holder.

Interconnection arrangement for a plasma torch wearing part and part holder

An electrode for a plasma torch and a plasma torch head comprise an elongated electrode holder with a front surface on the electrode tip and a hole arranged in the electrode tip along a central axis through the electrode holder, and an emission insert arranged in the hole such that an emission surface of the emission insert is exposed. The emission surface is set back relative to the front surface of the electrode holder. An electrode for a plasma torch and a plasma torch head also comprise an electrode socket and an electrode holder, the electrode socket having an internal thread, and the electrode holder having an external thread and an O-ring in a groove in the cylindrical outer surface. The electrode holder is screwed together with the electrode socket via the external thread and the internal thread and sealed by means of the O-ring.

Electrode for a plasma torch

The invention relates to a liquid-cooled plasma burner, comprising a nozzle bore for the plasma gas jet to exit at a nozzle tip and a first section whose outer surface gradually tapers in the shape of a cone at an angle &#x3b1; in the direction of the nozzle tip, except for at least one deflection section that extends in the shape of a cone at an angle &#x3b2; in the direction of the nozzle tip. The invention also relates to an arrangement thereof with a nozzle cap and to a plasma burner comprising such an arrangement.

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Finsterwalde, Germany

Ralf-Peter Reinke