DRAG TIP FOR A PLASMA CUTTING TORCH
First Claim
1. A drag tip comprising:
- an inner tip portion defining;
a distal end face;
an inner cavity through which a plasma gas flows; and
an orifice disposed between the distal end face and the inner cavity,an outer tip portion surrounding the inner tip portion and defining;
an inner chamber to accommodate a flow of secondary gas;
anda distal end portion,wherein the distal end face of the inner tip portion is adapted for contact with a workpiece and extends distally beyond the distal end portion of the outer tip portion, and the flow of secondary gas exits the outer tip portion proximate the distal end portion.
11 Assignments
0 Petitions
Accused Products
Abstract
A drag tip for use in a plasma cutting torch is provided that includes an inner tip portion defining a distal end face, an inner cavity through which a plasma gas flows, and an orifice disposed between the distal end face and the inner cavity. An outer tip portion surrounds the inner tip portion and defines an inner chamber to accommodate a flow of secondary gas and also a distal end portion. The distal end face of the inner tip portion is adapted for contact with a workpiece and extends distally beyond the distal end portion of the outer tip portion, and the flow of secondary gas exits the outer tip portion proximate the distal end portion. Variations of the drag tip and methods of operation are also provided.
34 Citations
25 Claims
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1. A drag tip comprising:
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an inner tip portion defining; a distal end face; an inner cavity through which a plasma gas flows; and an orifice disposed between the distal end face and the inner cavity, an outer tip portion surrounding the inner tip portion and defining; an inner chamber to accommodate a flow of secondary gas; and a distal end portion, wherein the distal end face of the inner tip portion is adapted for contact with a workpiece and extends distally beyond the distal end portion of the outer tip portion, and the flow of secondary gas exits the outer tip portion proximate the distal end portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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- 13. A drag tip comprising at least one outer tip portion that is offset proximally from a distal end face of the tip and a deflecting wall disposed proximate a distal end portion of the tip that directs a flow of shield gas along and away from the distal end portion of the tip.
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21. A drag tip comprising:
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an inner tip member defining; a distal end face; an inner cavity through which a plasma gas flows; and an orifice disposed between the distal end face and the inner cavity, the orifice transitioning to an enlarged recessed area proximate the distal end face, and an outer tip member surrounding the inner tip member; wherein a distal end face of the inner tip member is adapted for contact with a workpiece and extends distally beyond a distal end portion of the outer tip member, and a flow of secondary gas exits the outer tip member proximate the distal end portion and is angled outwardly. - View Dependent Claims (22, 23)
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- 24. A method of operating a plasma arc torch in a drag cutting mode, the method comprising directing a flow of secondary gas along a distal end portion of a drag tip, subsequently directing the flow of secondary gas away from the distal end portion of the drag tip a distance proximal from a workpiece, and directing the flow of secondary gas against the workpiece.
Specification