| 摘要 |
A component for use in a plasma arc torch is provided that includes a con tinuously contoured surface extending along the component that directs a flo w of shield gas at a predetermined angle to result in a specific pierce or c ut location on a workpiece. In one form, the component is a shield cap that includes an exit orifice extending through a central portion of the shield c ap, the exit orifice defining an inlet portion and an outlet portion, and a continuously contoured surface extending between the inlet portion and the o utlet portion. The continuously contoured surfaces may be convergent, diverg ent, or a combination of convergent and divergent according to the principle s of the present disclosure. Additionally, the shield cap may comprise a sin gle, unitary piece or alternately a plurality of pieces or components.</SDOA B>
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