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21. 发明申请

US20060289407A1 Composite electrode for a plasma arc torch 有权
公开(公告)号：US20060289407A1
公开(公告)日：2006-12-28
申请号：US11495945
申请日：2006-07-28
申请人： David Cook , Kirk Ferland , Charles Hackett , Yong Yang , Richard Couch , Zhipeng Lu
发明人： David Cook , Kirk Ferland , Charles Hackett , Yong Yang , Richard Couch , Zhipeng Lu
IPC分类号： B23K9/00 , B23K9/02
CPC分类号： H05H1/34 , H05H2001/3436 , H05H2001/3442
摘要： 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.

22. 发明授权

US06841754B2 Composite electrode for a plasma arc torch 有权
公开(公告)号：US06841754B2
公开(公告)日：2005-01-11
申请号：US10094000
申请日：2002-03-08
申请人： David J. Cook , Kirk H. Ferland , Charles Hackett , Young Yang , Richard W. Couch , Zhipeng Lu
发明人： David J. Cook , Kirk H. Ferland , Charles Hackett , Young Yang , Richard W. Couch , Zhipeng Lu
IPC分类号： B23K10/02 , H05B7/07 , H05B7/18 , H05H1/34 , B23K10/00
CPC分类号： H05H1/34 , H05H2001/3436 , H05H2001/3442
摘要： 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.

23. 发明授权

US06720518B2 Process and apparatus for cutting or welding a workpiece 有权
公开(公告)号：US06720518B2
公开(公告)日：2004-04-13
申请号：US10314645
申请日：2002-12-09
申请人： Nicholas A. Sanders , Richard W. Couch , Yong Yang , Zhipeng Lu , Robert C. Dean , Kenneth J. Woods , Charles M. Hackett , John Sobr , William J. Connally
发明人： Nicholas A. Sanders , Richard W. Couch , Yong Yang , Zhipeng Lu , Robert C. Dean , Kenneth J. Woods , Charles M. Hackett , John Sobr , William J. Connally
IPC分类号： B23K1000
CPC分类号： B26F3/004 , B23K28/00 , B26F3/06
摘要： A metal jet cutting system, which includes a jetting heat, a heater and a power source, is used for modifying a workpiece. The jetting head includes a crucible and an inlet for receiving a feed stock of a conductive material. The heater melts the conductive material in the crucible to provide a conductive fluid, which exits the jetting head via an outlet. The power source, which is in electrical communication with the conductive fluid, increases the temperature of the conductive fluid. The conductive fluid is applied to the workpiece to modify the workpiece.

24. 发明授权

US06525291B1 Process and apparatus for cutting or welding a workpiece 有权
公开(公告)号：US06525291B1
公开(公告)日：2003-02-25
申请号：US09665650
申请日：2000-09-20
申请人： Nicholas A. Sanders , Richard W. Couch , Yong Yang , Zhipeng Lu , Robert C. Dean , Kenneth J. Woods , Charles M. Hackett , John Sobr , William J. Connally
发明人： Nicholas A. Sanders , Richard W. Couch , Yong Yang , Zhipeng Lu , Robert C. Dean , Kenneth J. Woods , Charles M. Hackett , John Sobr , William J. Connally
IPC分类号： B23K1000
CPC分类号： B26F3/004 , B23K28/00 , B26F3/06
摘要： A metal jet cutting system, which includes a jetting heat, a heater and a power source, is used for modifying a workpiece. The jetting head includes a crucible and an inlet for receiving a feed stock of a conductive material. The heater melts the conductive material in the crucible to provide a conductive fluid, which exits the jetting head via an outlet. The power source, which is in electrical communication with the conductive fluid, increases the temperature of the conductive fluid. The conductive fluid is applied to the workpiece to modify the workpiece.

25. 发明授权

US5994663A Plasma arc torch and method using blow forward contact starting system 失效
标题翻译：等离子弧焊炬和方法采用前馈接触启动系统
公开(公告)号：US5994663A
公开(公告)日：1999-11-30
申请号：US727028
申请日：1996-10-08
申请人： Zhipeng Lu
发明人： Zhipeng Lu
IPC分类号： H05H1/34 , B23K10/00
CPC分类号： H05H1/34 , H05H2001/3489
摘要： Disclosed is a novel method and structure for contact starting a plasma arc torch. A translatable, electrically conductive component such as a nozzle or swirl ring is biased into contact with an electrode by a compliant spring element. A pilot arc is formed by first passing current through the electrode/component interface. Thereafter, the component is translated under the influence of gas pressure in a plasma chamber formed between the electrode and component, compressing the compliant element and initiating the pilot arc. The spring element may be a separate element or may be maintained integrally with the nozzle, swirl ring, or a retaining cap, facilitating removal and replacement of the spring element with consumable components of the torch.
摘要翻译：公开了一种用于接触等离子弧焊炬的新方法和结构。诸如喷嘴或涡流环的可平移的导电部件被柔性弹簧元件偏置成与电极接触。首先通过电极通过电极/部件接口形成引弧。此后，在形成于电极和部件之间的等离子体室内，在气体压力的作用下使部件平移，压缩柔性元件并起动引导电弧。弹簧元件可以是单独的元件，或者可以与喷嘴，涡流环或保持盖一体地保持，从而有助于使用手电筒的消耗部件移除和更换弹簧元件。

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