Plasma arc torch
View Patent ↗A plasma arc torch is provided that comprises a set of torch consumable components secured to a torch head, wherein a supply of cooling fluid flows coaxially through the torch to cool torch components and a supply of plasma gas and secondary gas flows through the torch to generate and stabilize a plasma stream for operations such as cutting workpieces. The torch consumable components, in part, comprise an electrode and a tip that include a variety of configurations for improved cooling, electrical contact, and attachment to adjacent torch components. Further, a consumables cartridge is provided for ease of use and replacement of the torch consumable components. Additionally, methods of operating the plasma arc torch at relatively high current levels are also provided by the present invention.
1. An assembly for use in a plasma arc torch comprising:
a tip comprising a plurality of flutes; and
a coolant guide comprising a plurality of radial tabs disposed within the flutes of the tip,
wherein the radial tabs direct a flow of fluid through the plasma arc torch.
2. An assembly for use in a plasma arc torch comprising:
a tip comprising a plurality of flutes;
a coolant guide comprising a plurality of radial tabs disposed within the flutes of the tip; and
a coolant seal disposed at a distal end portion of the coolant guide, wherein the assembly directs a flow of fluid and current through the plasma arc torch.
3. An assembly for use in a plasma arc torch comprising:
an electrode comprising a plurality of ribs and flutes configured for the passage of fluid and electrical contact with an adjacent cathodic member; and
a spacer disposed at a distal end portion of the electrode,
wherein the assembly directs a flow of plasma gas and current through the plasma arc torch.