Plasma arc torch cutting component with optimized water cooling

摘要

A nozzle, retaining cap, or shield for a plasma arc torch that includes a surface defining a conductive contact portion for exchanging heat with an adjacent torch component. The adjacent torch component can be a retaining cap, electrode or nozzle. The surface of the nozzle, retaining cap, or shield can also at least partially define a cooling channel having a curvilinear surface. A sealant portion can be positioned between the conductive contact portion and the cooling channel. The sealant portion can form or create a fluid barrier between the cooling channel and the conductive portion.

主权项

1. A shield for a plasma arc torch comprising:
an exterior surface defining a conductive contact portion for exchanging heat with an adjacent torch component; a curvilinear surface having a concave curvilinear portion defining a fluid flow path to reduce stagnation of a flow fluid, the curvilinear surface facing outward relative to a longitudinal axis of the shield; and a sealing component disposed between the conductive contact portion and the fluid flow path, the sealant portion prevents the flow fluid from leaking out of the plasma arc torch, wherein the fluid flow path comprises at least a portion of a fluid chamber that includes a convex curvilinear portion, the convex curvilinear portion promoting fluid flow into the concave curvilinear portion.