PLASMA CUTTING TIP WITH ADVANCED COOLING PASSAGEWAYS
First Claim
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1. A tip for a plasma arc torch comprising:
- a proximal portion adapted for connection to an adjacent anode member of the plasma arc torch, the proximal portion defining a first set of fluid passageways for entry of a cooling fluid into the tip and a second set of fluid passageways for exit of the cooling fluid from the tip; and
a tapered distal portion extending from the proximal portion to an exit orifice of the tip, the tapered distal portion defining an internal cavity in fluid communication with the first set of fluid passageways and the second set of fluid passageways, wherein the internal cavity is configured to define a base portion that surrounds the exit orifice.
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Abstract
A plasma arc torch is provided that includes a tip having an improved life. The tip defines a first set of fluid passageways, a second set of fluid passageways and an internal cavity in fluid communication with the first and second fluid passageways. The internal cavity includes a base portion disposed proximate and surrounding a central orifice of the tip. A first set of fluid passageways allow for entry of a cooling fluid into the tip and a second set of fluid passageways allow for exit of the cooling fluid from the tip.
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Citations
29 Claims
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1. A tip for a plasma arc torch comprising:
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a proximal portion adapted for connection to an adjacent anode member of the plasma arc torch, the proximal portion defining a first set of fluid passageways for entry of a cooling fluid into the tip and a second set of fluid passageways for exit of the cooling fluid from the tip; and a tapered distal portion extending from the proximal portion to an exit orifice of the tip, the tapered distal portion defining an internal cavity in fluid communication with the first set of fluid passageways and the second set of fluid passageways, wherein the internal cavity is configured to define a base portion that surrounds the exit orifice. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A tip for a plasma arc torch, comprising:
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a central member adapted for connection to an adjacent anode member of the plasma arc torch, the central member defining an exit orifice and a first fluid passageway for entry of a cooling fluid into the tip; and an outer member disposed around the central member and defining a second fluid passageway for exit of the cooling fluid from the tip. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A tip for a plasma arc torch, comprising:
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a central member adapted for connection to an adjacent anode member of the plasma arc torch, the central member defining; a first set of fluid passageways for entry of a cooling fluid into the tip; a tapered distal end portion having an outer peripheral wall section; and an exit orifice; and an outer member disposed around the central member and defining; a second set of fluid passageways for exit of the cooling fluid from the tip; and an inner peripheral wall section, wherein the outer peripheral wall section of the central member and the inner peripheral wall section of the outer member define an internal cavity in fluid communication with the first set of fluid passageways and the second set of fluid passageways, and a base portion of the internal cavity surrounds the exit orifice.
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28. A tip for a plasma arc torch comprising:
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a proximal portion adapted for connection to an adjacent anode member of the plasma arc torch; and a distal portion extending from the proximal portion to an exit orifice of the tip, the distal portion defining an internal cavity configured for entry and exit of a cooling fluid into and out of the tip, wherein a base portion of the internal cavity surrounds the exit orifice.
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29. A plasma arc torch comprising:
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a cathode member; an electrode electrically connected to the cathode member; a tip surrounding the electrode to define a plasma chamber therebetween and comprising; a proximal portion adapted for connection to an adjacent anode member; and a distal portion extending from the proximal portion to an exit orifice of the tip, the distal portion defining an internal cavity configured for entry and exit of a cooling fluid into and out of the tip, wherein a base portion of the internal cavity surrounds the exit orifice; and a cap member surrounding the tip to define a secondary gas chamber between the tip and the cap member, the secondary gas chamber allowing a secondary gas to flow through, wherein the internal cavity is disposed between the exit orifice and the secondary gas chamber.
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Specification