Consumable designs for a plasma arc torch
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United States of America Patent
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Aug 23, 2022
Grant Date -
May 20, 2021
app pub date -
Nov 19, 2020
filing date -
Nov 19, 2019
priority date (Note) -
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Abstract
A liquid cooled electrode for a contact start plasma arc cutting torch is provided. The electrode includes an elongated body defining a longitudinal axis. The elongated body includes a proximal end shaped to matingly engage a torch body of the plasma arc cutting torch and a distal end located substantially opposite of the proximal end along the longitudinal axis. The electrode also includes one or more contact surfaces disposed on an external surface of the distal end of the electrode body between the proximal and distal ends. The one or more contact surfaces are shaped to physically contact a nozzle disposed within the plasma arc cutting torch during a portion of a pilot arc initiation process. The physical contact is configured to support transmission of a pilot arc current between the electrode and the nozzle with a density of at least about 3000 amps per square inch.
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