Invention Grant
- Patent Title: Composite electrode for a plasma arc torch
- Patent Title (中): 等离子弧焊炬复合电极
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Application No.: US11495945Application Date: 2006-07-28
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Publication No.: US07659488B2Publication Date: 2010-02-09
- Inventor: David J. Cook , Kirk H. Ferland , Charles M. Hackett , Yong Yang , Richard W. Couch, Jr. , Zhipeng Lu
- Applicant: David J. Cook , Kirk H. Ferland , Charles M. Hackett , Yong Yang , Richard W. Couch, Jr. , Zhipeng Lu
- Applicant Address: US NH Hanover
- Assignee: Hypertherm, Inc.
- Current Assignee: Hypertherm, Inc.
- Current Assignee Address: US NH Hanover
- Agency: Proskauer Rose LLP
- Main IPC: B23K10/00
- IPC: B23K10/00

Abstract:
A plasma arc torch that includes a torch body having a nozzle mounted relative to a composite electrode in the body to define a plasma chamber. The torch body includes a plasma flow path for directing a plasma gas to the plasma chamber in which a plasma arc is formed. The nozzle includes a hollow, body portion and a substantially solid, head portion defining an exit orifice. The composite electrode can be made of a metallic material (e.g., silver) with high thermal conductivity in the forward portion electrode body adjacent the emitting surface, and the aft portion of the electrode body is made of a second low cost, metallic material with good thermal and electrical conductivity. This composite electrode configuration produces an electrode with reduced electrode wear or pitting comparable to a silver electrode, for a price comparable to that of a copper electrode.
Public/Granted literature
- US20060289407A1 Composite electrode for a plasma arc torch Public/Granted day:2006-12-28
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