Plasma cutting torch with distinguished gas injection circuits

摘要

The torch has a main body including two feeding circuits (C, E) for supplying process gas and starting gas to a plasma-producing chamber (8), respectively, where the circuit (E) is remote from the circuit (C). The plasma-producing chamber includes two sets of openings (D, F) arranged on a diffuser part to permit the passage of the process gas and the starting gas through the plasma-producing chamber. Independent claims are also included for the following: (A) a plasma arc processing installation including a plasma torch (B) a process for cutting metal parts.