Plasma arc torch providing angular shield flow injection

Details Plasma arc torch providing angular shield flow injection Plasma arc torch providing angular shield flow injection

2006-04-19

2010-11-09

Paschall, Mark H (Department: 3742)

Electric heating

Metal heating

By arc

C219S121510, C219S075000, C219S121480

Reexamination Certificate

active

07829816

ABSTRACT:
Plasma arc torches described herein include a torch tip with an improved nozzle that provides angular shield flow injection. In particular, the nozzle provides angular/conical impingement of a fluid (e.g., a shield gas) on an ionized plasma gas flowing through a plasma arc torch. Some of the torch tips described herein include a nozzle with a conical external shape combined with a shield with complementing internal geometry to form the angular fluid flow. As a result, a plasma arc torch including the improved nozzle have the benefits of a stabilized ionized plasma gas flow together with enhanced nozzle cooling and protection from reflecting slag during torch use.

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