Multi-Component Electrode For A Plasma Cutting Torch And Torch Including The Same

摘要

Embodiments of the present invention are directed to a plasma arc cutting torch and an electrode assembly used in the torch. The electrode assembly includes a high thermionic emissive insert and a high thermally conductive and high work function shell into which the insert is inserted. The shell aids in cooling the insert during operation and also has a design which ensures that the shell remains in a proper position during manufacture of the electrode assembly.

主权项

1. A cutting electrode assembly, comprising:
an electrode body having a cooling cavity and a second cavity positioned at a distal end of the electrode body; a thermally conductive shell inserted into said second cavity, where said thermally conductive shell has an outer wall surface and a shell cavity with an opening at a distal end of said thermally conductive shell; and a thermionic emissive insert positioned in said shell cavity, wherein said outer wall surface has a plurality of grooves which engage with said second cavity of said electrode body, such that at least some of a material which makes up said electrode body is inserted into said plurality of grooves.