Electrode for a contact start plasma arc torch and contact start plasma arc torch employing such electrodes

A component for a contact start plasma arc torch is provided. The component includes a hollow body defining a channel with a longitudinal axis. The channel is capable of slideably receiving an electrode body along the longitudinal axis. The component includes a contact element disposed in the hollow...

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Bibliographische Detailangaben
Hauptverfasser: Duan Zheng, Twarog Peter, Mather Jonathan P, Sanders Nicholas A, Lindsay Jon W, Shipulski E. Michael, Cook David Jonathan
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A component for a contact start plasma arc torch is provided. The component includes a hollow body defining a channel with a longitudinal axis. The channel is capable of slideably receiving an electrode body along the longitudinal axis. The component includes a contact element disposed in the hollow body and includes a first surface and a second surface. The first surface is adapted to facilitate electrical communication with a power supply and the second surface is adapted to physically contact a surface of the electrode body when the plasma arc torch is operated in a transferred arc mode. In addition, the second surface is characterized by the absence of physical contact with the surface of the electrode body when the torch is operated in a pilot arc mode.