Patent ID: 11865650
Assignee: KJELLBERG-STIFTUNG
Field: Chemical engineering (Chemistry)
Classification: CPC B  H | IPC B  H

Claim 0:
1. An electrode for a gas-cooled plasma cutting torch comprising:
an elongate electrode body with an open end and with a closed end which define a longitudinal axis L, and
an emission insert in said closed end, wherein a cavity extends in said electrode body from said open end of said electrode body towards said closed end, and said cavity is fluidically connected via at least one opening in a wall of said electrode body or in a front solid portion of said closed end to a radial outer side, in relation to said longitudinal axis L, of said electrode body;
wherein said cavity has a first cylindrical portion with straight parallel sides and a circular cross section having a first diameter D and has a second cylindrical portion with straight parallel sides and a circular cross section having a second diameter D wherein said first cylindrical portion is situated closer to said closed end than said second cylindrical portion, and said first diameter D is smaller than said second diameter D;
wherein said radial outer surface, in relation to said longitudinal axis L, of said electrode body has—proceeding from said closed end—a substantially cylindrical first portion and a second portion which adjoins said first portion, wherein said second portion has, per unit of length along said longitudinal axis L, a larger surface area than said first portion and has a thread or at least one spiral-shaped groove.