专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明授权

US5170033A Swirl ring and flow control process for a plasma arc torch 失效
标题翻译：用于等离子弧焊的SWIRL环和流量控制过程
公开(公告)号：US5170033A
公开(公告)日：1992-12-08
申请号：US682991
申请日：1991-04-12
申请人： Richard W. Couch, Jr. , Lifeng Luo , Nicholas A. Sanders
发明人： Richard W. Couch, Jr. , Lifeng Luo , Nicholas A. Sanders
IPC分类号： B23K10/00 , H05H1/34
CPC分类号： H05H1/341 , B23K10/006 , H05H2001/3421 , H05H2001/3426 , H05H2001/3442 , H05H2001/3468 , H05H2001/3478 , H05H2001/3494
摘要： A process and apparatus for reducing wear of an electrode in a plasma arc torch involves providing a substantial pressure drop in a flow of plasma gas from the torch to a plasma arc chamber defined by the electrode and a nozzle. The pressure drop is immediately before the plasma arc chamber. There is also a small, localized supply of the plasma gas located between the pressure drop and the plasma chamber. The supply is sufficient to stabilize the arc when the gas flow is cut off upstream of the pressure drop and the arc current is cut off very shortly thereafter. The pressure drop is small enough to permit an adequate flow of plasma gas to the plasma arc chamber during normal operations, but large enough to isolate residual gas in the torch from the plasma arc chamber when the arc current is cut off. The apparatus is preferably a swirl ring with an annular pre-chamber fed by a set of choke holes to feed gas to the chamber and create the pressure drop. A set of swirl holes feed gas from the pre-chamber to the plasma arc chamber.

22. 发明授权

US4791268A Arc plasma torch and method using contact starting 失效
标题翻译：电弧等离子火炬和方法使用接触启动
公开(公告)号：US4791268A
公开(公告)日：1988-12-13
申请号：US9508
申请日：1987-01-30
申请人： Nicholas A. Sanders , Richard W. Couch, Jr.
发明人： Nicholas A. Sanders , Richard W. Couch, Jr.
IPC分类号： H05H1/32 , B23K9/00 , B23K9/06 , B23K9/067 , B23K9/29 , B23K10/00 , H05H1/34
CPC分类号： B23K9/0671 , B23K9/296 , H05H1/34 , H05H2001/3415 , H05H2001/3426 , H05H2001/3489
摘要： An arc plasma torch includes a moveable cathode and a fixed anode which are automatically separated by the buildup of gas pressure within the torch after a current flow is established between the cathode and the anode. The gas pressure draws a nontransferred pilot arc to produce a plasma jet. The torch is thus contact started, not through contact with an external workpiece, but through internal contact of the cathode and anode. Once the pilot arc is drawn, the torch may be used in the nontransferred mode, or the arc may be easily transferred to a workpiece. In a preferred embodiment, the cathode has a piston part which slidingly moves within a cylinder when sufficient gas pressure is supplied. In another embodiment, the torch is a hand-held unit and permits control of current and gas flow with a single control.
摘要翻译：电弧等离子体焰炬包括可移动阴极和固定阳极，其在阴极和阳极之间建立电流之后通过气枪内的气体压力的积聚自动分离。气体压力绘制非转移的导电弧以产生等离子体射流。因此，手电筒接触开始，而不是通过与外部工件接触，而是通过阴极和阳极的内部接触。一旦引导电弧被拉出，手电筒可以在非转移模式下使用，或者电弧可以容易地转移到工件上。在优选实施例中，阴极具有活塞部件，当提供足够的气体压力时，该活塞部件在气缸内滑动移动。在另一个实施例中，手电筒是手持式单元，并且允许通过单个控制来控制电流和气体流量。

23. 发明授权

US4203022A Method and apparatus for positioning a plasma arc cutting torch 失效
标题翻译：定位等离子弧割炬的方法和装置
公开(公告)号：US4203022A
公开(公告)日：1980-05-13
申请号：US846637
申请日：1977-10-31
申请人： Richard W. Couch, Jr. , William V. Bailey
发明人： Richard W. Couch, Jr. , William V. Bailey
IPC分类号： B23K10/00 , B23K9/00
CPC分类号： B23K10/006
摘要： The positioning method disclosed herein is particularly applicable to a plasma arc cutting torch of the type in which tangential swirl is imparted to an ionizable gas through which the arc discharge takes place. The gas flow is initiated while the torch is in a retracted position and the torch is then advanced toward the workpiece. The vortex pressure is sensed and a signal is generated which is responsive to changes in vortex pressure. The advance of the torch is terminated in response to a change in the signal corresponding to the abrupt drop in the vortex pressure caused by attachment of the vortex to the workpiece.
摘要翻译：本文公开的定位方法特别适用于其中发生切向涡流到发生电弧放电的可电离气体的类型的等离子弧割炬。当割炬处于缩回位置时，气流开始，然后手电筒朝向工件前进。感测到涡流压力，产生响应于涡流压力变化的信号。响应于对应于由涡流附着到工件引起的涡流压力的突然下降的信号的变化，火炬的前进被终止。

24. 发明授权

US5841095A Apparatus and method for improved assembly concentricity in a plasma arc torch 失效
标题翻译：用于改进等离子弧焊炬组装同心度的装置和方法
公开(公告)号：US5841095A
公开(公告)日：1998-11-24
申请号：US736707
申请日：1996-10-28
申请人： Zhipeng Lu , Richard W. Couch, Jr. , Jennifer L. Freeman
发明人： Zhipeng Lu , Richard W. Couch, Jr. , Jennifer L. Freeman
IPC分类号： B23K10/00 , H05H1/34 , H05H1/38
CPC分类号： H05H1/38 , H05H2001/3442 , H05H2001/3478
摘要： Disclosed is a method and structure for improving alignment of a plasma arc with an axial centerline of a plasma arc torch. At least one of an electrode and nozzle are mounted in respective bores of a cathode block and torch body using a radial spring element. By concentrically machining the bores along an axial centerline of the torch and centering the consumable components within the bores using the spring elements, an insert disposed in a tip of the electrode is axially aligned with an orifice formed in a tip of the nozzle. Asymmetric wear of the nozzle orifice due to a skewed arc path is markedly reduced or eliminated. The torch may be employed in computer controlled cutting and marking systems to produce components or workpieces with reduced dimensional and angular errors.
摘要翻译：公开了一种用于改善等离子体电弧与等离子弧焊炬的轴向中心线的对准的方法和结构。使用径向弹簧元件将电极和喷嘴中的至少一个安装在阴极块和割炬本体的相应孔中。通过沿着手电筒的轴向中心线同心地加工孔，并使用弹簧元件将消耗部件定心在孔内，设置在电极的尖端中的插入件与形成在喷嘴的尖端中的孔口轴向对准。由于偏斜电弧路径引起的喷嘴孔的不对称磨损显着降低或消除。手电筒可用于计算机控制的切割和标记系统，以产生具有减小的尺寸和角度误差的部件或工件。

25. 发明授权

US5756960A Detecting non-symmetrical nozzle wear in a plasma arc torch 失效
标题翻译：检测等离子弧焊枪中的非对称喷嘴磨损
公开(公告)号：US5756960A
公开(公告)日：1998-05-26
申请号：US716267
申请日：1996-09-24
申请人： Maciej Wlodzimierz Rogozinski , Subramania Ramakrishnan , Ashley Grant Doolette , Nicholas A. Sanders , Richard W. Couch, Jr.
发明人： Maciej Wlodzimierz Rogozinski , Subramania Ramakrishnan , Ashley Grant Doolette , Nicholas A. Sanders , Richard W. Couch, Jr.
IPC分类号： B23K10/00 , H05H1/34 , H05H1/36
CPC分类号： H05H1/36 , B23K10/00 , H05H2001/3494
摘要： A method and apparatus for detecting non-axisymmetric wear (i.e. grooving 22) of the orifice (12) of the nozzle (13) of a plasma arc torch (1) involves placement of a probe adjacent a plasma jet (21) that emerges from the nozzle (13) such that a number of electrically isolated elements (23) of the probe surround the jet (21) and measuring a voltage drop across an electrode (11) of the torch (1) and each probe element (23) to detect whether there is any deflection of the plasma jet (21). The presence of a groove (22) causes the jet (21) to deflect and is indicated by an increased voltage at the probe elements (23) towards which the jet is deflected and a decreased voltage at the opposite elements. The probe may be formed by segmenting a shield (17) of the torch. Alternatively, the voltage across an electrode (11) of a plasma torch (1) and an external electrode (30) that provides a sloping surface (31) to which the plasma arc jet attaches may be monitored while relatively rotating the torch (1) and the external electrode (30) to detect changes in length of the arc, any such change indicating that the nozzle of the torch is grooved. The degree of wear of a nozzle (i.e. size of a groove) is determinable by comparing the size of a measured voltage variation with a reference voltage representative of an ungrooved nozzle.
摘要翻译： PCT No.PCT / AU95 / 00165 Sec。 371日期：1996年9月24日 102（e）1996年9月24日PCT 1995年3月24日PCT PCT。公开号WO95 / 26252 日期1995年10月5日用于检测等离子体电弧炬（1）的喷嘴（13）的孔口（12）的非轴对称磨损（即，切槽22）的方法和装置包括将探头放置在等离子体射流附近 21），其从所述喷嘴（13）出现，使得所述探针的多个电隔离元件（23）围绕所述射流（21）并测量所述割炬（1）的电极（11）上的电压降，并且每个探针元件（23）以检测是否存在等离子体射流的任何偏转（21）。凹槽（22）的存在导致射流（21）偏转并且由探针元件（23）处的电压增加而使射流偏转，并且在相对元件处的电压降低。可以通过分割割炬的屏蔽（17）来形成探针。或者，可以在相对旋转割炬（1）的同时监视等离子体焰炬（1）的电极（11）和提供等离子弧喷射附着的倾斜表面（31）的外部电极（30）之间的电压，以及用于检测电弧长度变化的外部电极（30），指示割炬的喷嘴开槽的任何这种变化。喷嘴的磨损程度（即槽的尺寸）可以通过将测量的电压变化的大小与代表未插入喷嘴的参考电压进行比较来确定。

26. 发明授权

US5717187A Plasma torch condition monitoring 失效
标题翻译：等离子火炬状态监测
公开(公告)号：US5717187A
公开(公告)日：1998-02-10
申请号：US716264
申请日：1996-09-24
申请人： Maciej Wlodzimierz Rogozinski , Subramania Ramakrishnan , Ashley Grant Doolette , Nicholas A. Sanders , Richard W. Couch, Jr.
发明人： Maciej Wlodzimierz Rogozinski , Subramania Ramakrishnan , Ashley Grant Doolette , Nicholas A. Sanders , Richard W. Couch, Jr.
IPC分类号： H05H1/34 , H05H1/36 , B23K10/00
CPC分类号： H05H1/36 , H05H2001/3494
摘要： A method and apparatus for monitoring the condition of a plasma arc torch determines whether the nozzle (13) of the torch and an electrode (11) of the torch have suffered any erosion and distinguishes the two. The pressure of a plasma forming gas that is supplied for the torch (p.sub.1 or p.sub.n) is monitored while the torch is operating to detect erosion of the orifice (12) of the nozzle (13), and the voltage U.sub.ne between the electrode (11) and nozzle (13) is monitored, also while the torch is operating, to detect erosion of the electrode (11). A pressure, p.sub.1 or p.sub.n below a reference pressure indicative of a good (un-eroded) nozzle indicates erosion of the orifice (12), and a voltage U.sub.ne above a reference voltage indicative of a good (un-eroded) electrode indicates erosion of the electrode. The pressure measurement and U.sub.ne are compared with appropriate reference values to logically discriminate between wear of the nozzle and wear of the electrode (given that an increase in U.sub.ne due to electrode wear is opposed by a decrease in U.sub.ne due to nozzle wear). The apparatus and method may provide a binary "good" or "bad" output for the nozzle and electrode, respectively, or may allow for the degree of wear of each to be determined.
摘要翻译： PCT No.PCT / AU95 / 00164 Sec。 371日期：1996年9月24日 102（e）1996年9月24日PCT 1995年3月24日PCT PCT。公开号WO95 / 26251 日期1995年10月5日用于监测等离子弧焊炬的状态的方法和装置确定炬的喷嘴（13）和炬的电极（11）是否遭受了任何侵蚀并区分两者。在割炬正在操作以检测喷嘴（13）的孔口（12）的侵蚀和电极（11）之间的电压Une的同时，监视供给炬（p1或pn）的等离子体形成气体的压力）和喷嘴（13），同时在割炬操作的同时也监测电极（11）的腐蚀。低于表示良好（未侵蚀）喷嘴的参考压力的压力p1或pn表示孔口（12）的侵蚀，并且高于指示良好（未侵蚀）电极的参考电压的电压Une表示侵蚀电极。将压力测量和Une与适当的参考值进行比较，以逻辑上区分喷嘴的磨损和电极的磨损（假设由于电极磨损引起的Une的增加与喷嘴磨损引起的Une的减小相反）。该装置和方法可以分别为喷嘴和电极提供二进制“好”或“坏”输出，或者可以允许确定每个的磨损程度。

27. 发明授权

US5653896A Process for high quality plasma arc and laser cutting of stainless steel and aluminum 失效
标题翻译：高品质等离子弧和不锈钢和铝激光切割工艺
公开(公告)号：US5653896A
公开(公告)日：1997-08-05
申请号：US711162
申请日：1996-09-09
申请人： Richard W. Couch, Jr. , Nicholas A. Sanders , Zhipeng Lu , Lifeng Luo , Staffan C. O. Stenfelt
发明人： Richard W. Couch, Jr. , Nicholas A. Sanders , Zhipeng Lu , Lifeng Luo , Staffan C. O. Stenfelt
IPC分类号： B23K10/00 , B23K26/12 , B23K26/14 , B23K35/38
CPC分类号： B23K26/123 , B23K10/00 , B23K26/12 , B23K26/125 , B23K26/1429 , B23K35/38 , B23K2203/05 , B23K2203/10
摘要： Plasma arc or laser cutting uses a mix of reactive and reducing gas flows to cut sheets of stainless steel, aluminum and other non-ferrous metals. The reducing gas flow to the cut varies as a percentage of the total gas flow to maintain a reducing atmosphere down through the cut, but to leave a predominantly oxidizing atmosphere at the intersection of the cut and the bottom surface of the sheet being cut. In plasma arc cutting these flows can also be characterized as either a plasma gas flow, one that forms the arc, or a shield gas flow that surrounds the arc. The reactive gas is preferably a flow of air, oxygen, nitrogen, carbon dioxide or a combination of these gases. The reducing gas is preferably hydrogen, hydrogen 35, methane, or a mixture of these gases. For aluminum, the reactive gas is preferably air or nitrogen and the reducing gas is preferably methane or a mixture of methane and air. In laser cutting the reducing gases such as methane can be used by mixing them with reactive assist gases.
摘要翻译：等离子弧或激光切割使用反应和还原气流的混合来切割不锈钢，铝和其他有色金属。到切割的还原气体流量以总气体流量的百分比变化，以通过切割保持还原气氛，但是在被切割的片材的切割和底部表面的交叉处留下主要的氧化气氛。在等离子体电弧切割中，这些流动也可以表征为等离子体气流，形成电弧的气流或围绕电弧的保护气体流。反应气体优选为空气，氧气，氮气，二氧化碳或这些气体的组合。还原气体优选为氢气，氢气，甲烷或这些气体的混合物。对于铝，反应性气体优选为空气或氮气，并且还原气体优选为甲烷或甲烷和空气的混合物。在激光切割中，还原气体如甲烷可以通过将其与活性助剂气体混合来使用。

28. 发明授权

US5464962A Electrode for a plasma arc torch 失效
标题翻译：等离子弧焊炬电极
公开(公告)号：US5464962A
公开(公告)日：1995-11-07
申请号：US283070
申请日：1994-07-29
申请人： Lifeng Luo , Richard W. Couch, Jr.
发明人： Lifeng Luo , Richard W. Couch, Jr.
IPC分类号： B23K10/00 , H05H1/34
CPC分类号： H05H1/34 , H05H2001/3442 , H05H2001/3452
摘要： An insert securely disposed in a bottom end of an electrode has an exposed emission surface shaped to define a recess in the insert, wherein the recess is initially dimensioned as a function of the operating current level of the torch, the diameter of the insert, and the plasma gas flow pattern in the torch. The electrode has an elongated body formed of a high thermal conductivity material such as copper, and a bore disposed in the bottom end of the body along a central axis. The insert is formed of a high thermionic emissivity material, such as hafnium, and securely disposed in the bore with the emission surface exposed. The emission surface may be initially shaped by removing a predetermined amount of the high thermionic emissivity material from the insert to define a generally concave recess, a generally cylindrical recess or other shapes. When used in a torch, the electrode provides for reduced deposition of the high thermionic emissivity material on the nozzle, thereby reducing nozzle wear in the torch.
摘要翻译：牢固地设置在电极的底端中的插入件具有被形成为在插入件中限定凹部的暴露的发射表面，其中，所述凹部的初始尺寸是根据手电筒的操作电流水平，插入件的直径和火炬中的等离子气体流动模式。电极具有由诸如铜的高导热性材料形成的细长主体，以及沿着中心轴设置在主体的底端中的孔。插入件由诸如铪的高热离子辐射材料形成，并且牢固地设置在孔中，发射表面暴露。可以通过从插入件移除预定量的高热离子发射率材料来形成发射表面，以限定大体上凹形的凹部，大致圆柱形的凹部或其他形状。当用于手电筒时，电极提供了在喷嘴上沉积高热离子辐射材料，从而减少了焊炬上的喷嘴磨损。

29. 发明授权

US5414236A Process for high quality plasma arc cutting of stainless steel and aluminum 失效
标题翻译：高品质等离子弧切割不锈钢和铝的工艺
公开(公告)号：US5414236A
公开(公告)日：1995-05-09
申请号：US989183
申请日：1992-12-11
申请人： Richard W. Couch, Jr. , Nicholas A. Sanders , Zhipeng Lu , Lifeng Luo
发明人： Richard W. Couch, Jr. , Nicholas A. Sanders , Zhipeng Lu , Lifeng Luo
IPC分类号： B23K10/00 , B23K26/12 , B23K26/14 , B23K35/38
CPC分类号： B23K26/123 , B23K10/00 , B23K26/125 , B23K26/1423 , B23K35/38 , B23K2203/05 , B23K2203/10
摘要： A plasma arc torch uses a mix of reactive and reducing gas flows to cut sheets of stainless steel, aluminum and other non-ferrous metals. The reducing gas flow to the cut is varied as a percentage of the total gas flow to maintain a reducing atmosphere down through the cut, but to leave a predominantly oxidizing atmosphere at the intersection of the cut and the bottom surface of the sheet being out. These flows can also be characterized as either a plasma gas flow, one that forms the arc, or a shield gas flow that surrounds the arc. The reactive gas is preferably a flow of air, oxygen, nitrogen, carbon dioxide or a combination of these gases. The reactive gas is usually in the plasma gas flow, whether alone or mixed with other gases. The reducing gas is preferably hydrogen, hydrogen 35, methane, or a mixture of these gases. For aluminum, the reactive gas is preferably air or nitrogen and the reducing gas is preferably methane or a mixture of methane and air.
摘要翻译：等离子弧焊炬使用反应和还原气流混合切割不锈钢，铝和其他有色金属片。进入切割的还原气体流量以总气体流量的百分比而变化，以通过切割保持还原气氛，但在片材的切割和底部表面的交叉点处留下主要的氧化气氛。这些流动也可以表征为等离子体气体流，形成电弧的流动或围绕电弧的屏蔽气体流。反应气体优选为空气，氧气，氮气，二氧化碳或这些气体的组合。反应气体通常处于等离子体气体流中，无论是单独还是与其他气体混合。还原气体优选为氢气，氢气，甲烷或这些气体的混合物。对于铝，反应性气体优选为空气或氮气，并且还原气体优选为甲烷或甲烷和空气的混合物。

30. 发明授权

US5380976A Process for high quality plasma arc and laser cutting of stainless steel and aluminum 失效
标题翻译：高品质等离子弧和不锈钢和铝激光切割工艺
公开(公告)号：US5380976A
公开(公告)日：1995-01-10
申请号：US24416
申请日：1993-03-01
申请人： Richard W. Couch, Jr. , Nicholas A. Sanders , Zhipeng Lu , Lifeng Luo , Staffan C. O. Stenfelt
发明人： Richard W. Couch, Jr. , Nicholas A. Sanders , Zhipeng Lu , Lifeng Luo , Staffan C. O. Stenfelt
IPC分类号： B23K10/00 , B23K26/12 , B23K26/14 , B23K35/38 , B23K9/00
CPC分类号： B23K26/123 , B23K10/00 , B23K26/12 , B23K26/125 , B23K26/1429 , B23K35/38 , B23K2203/05 , B23K2203/10
摘要： Plasma arc or laser cutting uses a mix of reactive and reducing gas flows to cut sheets of stainless steel, aluminum and other non-ferrous metals. The reducing gas flow to the cut varies as a percentage of the total gas flow to maintain a reducing atmosphere down through the cut, but to leave a predominantly oxidizing atmosphere at the intersection of the cut and the bottom surface of the sheet being cut. In plasma arc cutting these flows can also be characterized as either a plasma gas flow, one that forms the arc, or a shield gas flow that surrounds the arc. The reactive gas is preferably a flow of air, oxygen, nitrogen, carbon dioxide or a combination of these gases. The reducing gas is preferably hydrogen, hydrogen 35, methane, or a mixture of these gases. For aluminum, the reactive gas is preferably air or nitrogen and the reducing gas is preferably methane or a mixture of methane and air. In laser cutting the reducing gases such as methane can be used by mixing them with reactive assist gases.
摘要翻译：等离子弧或激光切割使用反应和还原气流的混合来切割不锈钢，铝和其他有色金属。到切割的还原气体流量以总气体流量的百分比变化，以通过切割保持还原气氛，但是在被切割的片材的切割和底部表面的交叉处留下主要的氧化气氛。在等离子体电弧切割中，这些流动也可以表征为等离子体气流，形成电弧的气流或围绕电弧的保护气体流。反应气体优选为空气，氧气，氮气，二氧化碳或这些气体的组合。还原气体优选为氢气，氢气，甲烷或这些气体的混合物。对于铝，反应性气体优选为空气或氮气，并且还原气体优选为甲烷或甲烷和空气的混合物。在激光切割中，还原气体如甲烷可以通过将其与活性助剂气体混合来使用。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式