公开(公告)号：WO2017062676A1

公开(公告)日：2017-04-13

申请号：PCT/US2016/055833

申请日：2016-10-06

Applicant: HYPERTHERM, INC.

Inventor： MITRA, Soumya ,  LIEBOLD, Stephen, M. ,  AMES, Jonathan ,  PASSAGE, Christopher, S. ,  PETERS, John ,  DUNBAR, Steve

IPC: H05H1/34 ,  H05H1/36

CPC classification number: B23K10/006 ,  B23K10/00 ,  H05H1/34 ,  H05H1/36 ,  H05H2001/3426 ,  H05H2001/3473 ,  H05H2001/3494

Abstract: In some aspects, methods for preserving a usable life of a plasma arc electrode consumable installed in a plasma arc torch can include measuring a characteristic of an electrical signal being provided to the torch to generate a plasma arc between the torch and a workpiece to be processed; monitoring the characteristic during operation of the torch over a time period; comparing the characteristic to a threshold value; and responsive to determining that a measured characteristic meets and/or exceeds the threshold value, initiating an arc extinguishing sequence to preserve the life of the electrode.

Abstract translation: 在一些方面，用于保持安装在等离子弧焊炬中的等离子弧电极消耗品的可使用寿命的方法可以包括测量提供给炬的电信号的特性，以在炬和待加工的工件之间产生等离子弧 ; 在一段时间内监测手电筒的运行特性; 将特性与阈值进行比较; 并且响应于确定测量的特性是否达到和/或超过所述阈值，启动灭弧序列以保持所述电极的寿命。

公开(公告)号：WO2015183616A1

公开(公告)日：2015-12-03

申请号：PCT/US2015/031368

申请日：2015-05-18

Applicant: HYPERTHERM, INC.

Inventor： PETERS, John ,  LINDSAY, Jon, W.

IPC: H05H1/34 ,  B23K10/02

CPC classification number: H05H1/34 ,  B23K10/006 ,  H05H1/3405 ,  H05H2001/3426 ,  H05H2001/3468 ,  H05H2001/3494

Abstract: A method of operating a plasma arc torch system is provided. A first plasma gas supply source, a second plasma gas supply source, and a control unit are provided. A first plasma gas composition is flowed through a first plasma gas flow path, and a plasma arc is generated using the first plasma gas composition. After arc generation, the plasma gas composition is changed to a second plasma gas composition, and the plasma gas flow path is changed to a second plasma gas flow path, wherein the second plasma gas flow path is different from the first plasma gas flow path. The plasma arc is sustained using the second plasma gas composition. The first and second plasma gas flow paths are both at least partially disposed within the plasma arc torch.

Abstract translation: 提供了一种操作等离子弧焊炬系统的方法。 提供第一等离子体气体供应源，第二等离子体气体供应源和控制单元。 第一等离子体气体组合物流过第一等离子体气体流动路径，并且使用第一等离子体气体组合物产生等离子体电弧。 在电弧产生之后，将等离子体气体组成改变为第二等离子体气体组成，等离子体气体流动路径改变为第二等离子体气体流动路径，其中第二等离子体气体流动路径与第一等离子体气体流动路径不同。 使用第二等离子体气体组合物维持等离子弧。 第一和第二等离子体气体流动路径至少部分地设置在等离子弧焊炬内。

公开(公告)号：WO2014209974A1

公开(公告)日：2014-12-31

申请号：PCT/US2014/043828

申请日：2014-06-24

Applicant: THERMAL DYNAMICS CORPORATION

Inventor： HEBERT, Brandon ,  CONWAY, Christopher, J.

IPC: H05H1/34 ,  B23K10/00

CPC classification number: H05H1/34 ,  B23K10/00 ,  H05H2001/3421 ,  H05H2001/3426

Abstract: A plasma arc torch is provided that includes a torch head, a pre-flow gas conduit for directing a pre-flow gas through the plasma arc torch, at least one plasma gas conduit for directing a plasma gas through the plasma arc torch, and a gas control device. The pre-flow gas conduit and the plasma gas conduit extend into a proximal end portion of the torch head. The gas control device is disposed proximate the torch head and extends between a distal end portion of the pre-flow gas conduit and a distal end portion of the plasma gas conduit. The gas control device is operatively connected to each of the pre-flow gas conduit and the plasma gas conduit. The gas control device selectively allows one of the pilot gas and the plasma gas to flow through the plasma arc torch.

Abstract translation: 提供了一种等离子弧焊炬，其包括炬头，用于引导预流气体通过等离子弧炬的预流气体导管，用于引导等离子体气体通过等离子弧炬的至少一个等离子气体导管，以及 气体控制装置 预流动气体管道和等离子体气体管道延伸到炬头的近端部分。 气体控制装置设置在炬头附近并且在预流动气体导管的远端部分和等离子体气体导管的远端部分之间延伸。 气体控制装置可操作地连接到每个预流动气体导管和等离子体气体导管。 气体控制装置选择性地允许先导气体和等离子体气体之一流过等离子弧焊炬。

公开(公告)号：WO2012140425A1

公开(公告)日：2012-10-18

申请号：PCT/GB2012/050803

申请日：2012-04-12

Applicant: EDWARDS LIMITED ,  VORONIN, Sergey Alexandrovich ,  CLEMENTS, Christopher James Philip ,  MCGRATH, Daniel Martin ,  GRAY, Fraser ,  SEELEY, Andrew James

Inventor： VORONIN, Sergey Alexandrovich ,  CLEMENTS, Christopher James Philip ,  MCGRATH, Daniel Martin ,  GRAY, Fraser ,  SEELEY, Andrew James

IPC: H05H1/34

CPC classification number: H05H1/34 ,  H05H2001/3426 ,  H05H2001/3468 ,  H05H2001/3484

Abstract: To lengthen the service period on DC plasma abatement devices a modified DC plasma torch is provided with an electrically conductive cathode and an electrically conductive anode spaced apart from one another to form a gap therebetween; a metal swirl bush at least partially located within the gap and comprising a channel adapted to permit, in use, a gas to flow through the gap; and a ceramic element interposed between any one or more of: the cathode and the swirl bush; and the anode and the swirl bush.

Abstract translation: 为了延长DC等离子体消除装置的使用期限，改进的DC等离子体焰炬设置有彼此间隔开的导电阴极和导电阳极，以在它们之间形成间隙; 至少部分地位于所述间隙内的金属涡流套管，包括适于在使用中允许气体流过所述间隙的通道; 以及插入在所述阴极和所述涡流套筒中的任一个或多个中的陶瓷元件; 和阳极和涡流衬套。

公开(公告)号：WO2009008271A1

公开(公告)日：2009-01-15

申请号：PCT/JP2008/061760

申请日：2008-06-27

Applicant: コマツ産機株式会社 ,  山口 義博 ,  藏岡 一浩

Inventor： 山口 義博 ,  藏岡 一浩

IPC: B23K10/00 ,  H05H1/28 ,  H05H1/34

CPC classification number: H05H1/34 ,  H05H2001/3426 ,  H05H2001/3457

Abstract: 　プラズマトーチで、確実にノズルへのパイロットアーク用通電経路を形成し、ノズルの取り外しを容易にし、ノズルの中心軸位置決めの支障を無くす。ノズル（１６）が、外フランジ（６２）を有し、外フランジ（６２）の上面が、ノズル台座（３０）に対向するよう向けられた通電面（６４）を提供する。ノズル台座（３０）が弾性的な電気接触子（５４ａ），（５４ｂ）を有する。電気接触子（５４ａ），（５４ｂ）が、ノズルの外フランジ（６２）（通電面６４）に当接してパイロットアーク用の通電経路を形成する。ノズル（１６）がノズル台座（３０）に取り付けられた時、電気接触子（５４ａ），（５４ｂ）が、ノズルの外フランジ（６２）（通電面６４）に当接してパイロットアーク用の通電経路を形成し、ノズルの外フランジ６２（通電面６４）を、ノズルの中心軸（１６A）とほぼ平行に、ノズル台座（３０）から押し出す方向へ押圧する。

Abstract translation: 提供了一种等离子体焰炬，其中可靠地形成用于引导到喷嘴的导电路径，以便于喷嘴的移除，从而消除了对喷嘴的中心轴定位的困难。 喷嘴（16）具有外凸缘（62），其外表面提供面向喷嘴支架（30）的导电面（64）。 该喷嘴架（30）具有弹性电接点（54a，54b）。 这些电触头（54a和54b）抵靠喷嘴的外凸缘（62）（或导电面（64）），从而形成导向电弧的导电路径。 当喷嘴（16）附接到喷嘴支架（30）时，电触头（54a和54b）抵靠喷嘴的外凸缘（62）或导电面（64），从而形成导电 引导弧的路径并且推动喷嘴的外凸缘（或导电面（64）），其基本上与喷嘴的中心轴线（16A）平行并且远离喷嘴座（30） ）。

公开(公告)号：WO2007098145A2

公开(公告)日：2007-08-30

申请号：PCT/US2007/004344

申请日：2007-02-20

Applicant: HYPERTHERM, INC. ,  TWAROG, Peter, John ,  MATHER, Jon ,  EICKHOFF, Stephen, T. ,  ROBERTS, Jesse

Inventor： TWAROG, Peter, John ,  MATHER, Jon ,  EICKHOFF, Stephen, T. ,  ROBERTS, Jesse

IPC: H05H1/34

CPC classification number: H05H1/34 ,  B23K10/006 ,  H05H2001/3426 ,  H05H2001/3489

Abstract: An electrode for a contact start plasma arc torch includes an elongated electrode body formed of an electrically conductive material that defines a longitudinal axis and a distal end for housing an emissive element. The electrode includes a second end positioned adjacent the electrode body. The second end defines an extensive portion having a first length along a first direction and a second length along a second direction. The second length is greater than the first length. A component for use with the electrode includes a hollow body element having an interior surface with one or more of a contour, step, or flange that defines a shaped opening capable of slideably receiving a complementary-shaped portion of an electrode body.

Abstract translation: 用于接触式起始等离子弧焊炬的电极包括由限定纵向轴线的导电材料形成的细长电极体和用于容纳发射元件的远端。 电极包括邻近电极体定位的第二端。 第二端限定具有沿第一方向的第一长度和沿着第二方向的第二长度的大部分。 第二长度大于第一长度。 用于电极的部件包括具有内表面的中空本体元件，该内表面具有轮廓，台阶或凸缘中的一个或多个，其限定能够可滑动地接收电极体的互补形状部分的成形开口。

公开(公告)号：WO2003072293A1

公开(公告)日：2003-09-04

申请号：PCT/US2003/005757

申请日：2003-02-25

Applicant: THERMAL DYNAMICS CORPORATION ,  JONES, Joseph, P. ,  HORNER-RICHARDSON, Kevin, D. ,  CHEN, Shiyu ,  HEWITT, Roger, W.

Inventor： JONES, Joseph, P. ,  HORNER-RICHARDSON, Kevin, D. ,  CHEN, Shiyu ,  HEWITT, Roger, W.

IPC: B23K10/00

CPC classification number: H05H1/34 ,  B23K10/006 ,  H05H2001/3426 ,  H05H2001/3468 ,  H05H2001/3489

Abstract: A contact start plasma arc torch (120) is provided that comprises an electrode, a tip, and an initiator (50) that is resiliently biased into contact with the tip (40), the initiator being movable against the resilient bias to separate from the tip and establish a pilot arc between the initiator and the tip. The initiator is disposed within a start cartridge (42), which preferably comprises a coil spring that biases the initiator into contact with the tip. The plasma arc torch (12) further comprises a plurality of head vent holes to vent gas from within the start cartridge during operation of the torch. Additionally, the tip defines a plurality of swirl holes and secondary gas holes to generate and control a plasma stream that is subsequently blown from a central exit orifice in the tip.

Abstract translation: 提供接触启动等离子体电弧炬（120），其包括电极，尖端和引导器（50），所述电极，尖端和引发器（50）被弹性地偏置成与所述尖端（40）接触，所述引发器可抵抗所述弹性偏压移动， 并在起始器和尖端之间建立一个导向电弧。 引发器设置在启动盒（42）内，其优选地包括螺旋弹簧，该螺旋弹簧偏压起动器与尖端接触。 等离子弧焊炬（12）还包括多个头部通气孔，用于在割炬操作期间从启动盒内排出气体。 另外，尖端限定多个涡流孔和二次气体孔，以产生和控制随后从尖端中的中心出口孔吹出的等离子体流。

公开(公告)号：WO1991016165A1

公开(公告)日：1991-10-31

申请号：PCT/US1991002770

申请日：1991-04-23

Applicant: HYPERTHERM, INC.

Inventor： HYPERTHERM, INC. ,  LUO, Lifeng ,  SANDERS, Nicholas, A. ,  COUCH, Richard, W., Jr.

IPC: B23K09/00

CPC classification number: H05H1/341 ,  B23K10/00 ,  B23K10/006 ,  H05H2001/3421 ,  H05H2001/3426 ,  H05H2001/3442 ,  H05H2001/3457 ,  H05H2001/3468 ,  H05H2001/3478 ,  H05H2001/3494

Abstract: A process and apparatus for reducing wear of an electrode in a plasma arc torch involves altering the gas flow in a plasma chamber surrounding the electrode (22) immediately before and continuing after cutting of the current that sustain the arc (18). The altering includes closing off the gas flow upstream of the chamber (32), switching from a swirling flow to a radial/axial flow through the plasma chamber (32), reducing the arc current level in conjunction with either of the above, and venting the plasma chamber (32) to rapidly change the gas flow and pressure in the chamber. The interval is sufficient to reduce electrode wear, but short enough that the arc remains stabilized until cut-off. In the flow stop mode, a solenoid valve (48) is placed on an inlet tube (46) for the plasma gas. Flow altering also occurs on start up. A gas preflow is established prior to pilot arc ignition. On transfer, the flow increases to its full operating value in conjunction with an increase in the arc current. The preflow can be axial, or partially axial. Also, the type or composition of the gas used in the preflow and in the operating flow can change during the start up from a less reactive to more reactive gas.

公开(公告)号：WO2015132657A1

公开(公告)日：2015-09-11

申请号：PCT/IB2015/000297

申请日：2015-03-09

Applicant: LINCOLN GLOBAL INC.

Inventor： WINN, Jackie, Laverne ,  NAMBURU, Praveen, Krishna

IPC: H05H1/28 ,  H05H1/34

CPC classification number: H05H1/34 ,  H05H1/28 ,  H05H2001/3426 ,  H05H2001/3436

Abstract: A plasma arc torch (100, 400) includes a cathode adaptor body (501) having at least two sealant channels with sealant rings. The torch (100, 400) also includes a cathode body (505) having at least two sealant channels with sealant rings. The torch (100, 400) further includes a pilot arc connector (509) having at least two sealant channels with sealant rings. The torch (100, 400) additionally includes a rear isolator (513, 513') that includes at least two sealant channels with sealant rings that engage an anode body (519) and are spaced apart from each other by a distance that is in a range of 2 percent to 50 percent of an over all length of the rear isolator (513, 513'). The rear isolator (513, 513') also includes at least two sealant channels with sealant rings that engage a ring isolator (521) and are spaced apart from each other by a distance that is in a range of 2 percent to 50 percent of the overall length of the rear isolator (513, 513').

Abstract translation: 等离子弧焊炬（100,400）包括具有至少两个具有密封环的密封剂通道的阴极适配器本体（501）。 手电筒（100,400）还包括具有密封剂环的至少两个密封剂通道的阴极体（505）。 所述手电筒（100,400）还包括具有密封剂环的至少两个密封剂通道的先导弧形连接器（509）。 所述手电筒（100,400）还包括后隔离器（513,513'），所述后隔离器包括至少两个密封剂通道，所述密封剂通道具有接合阳极体（519）的密封环，并且彼此隔开距离为 范围为后隔离器（513,513'）的全长的2％至50％。 后隔离器（513,513'）还包括具有密封环的至少两个密封剂通道，该密封剂通道与环形隔离件（521）接合并且彼此隔开一定距离，该距离在该隔离件的2％至50％的范围内 后隔离器（513,513'）的总长度。

公开(公告)号：WO2014124521A1

公开(公告)日：2014-08-21

申请号：PCT/CA2014/000108

申请日：2014-02-17

Applicant: PYROGENESIS CANADA INC.

Inventor： RAO, Lakshminarayana Mydala Prahlada ,  REMILLARD, Jocelyn ,  CARABIN, Pierre

IPC: H05H1/26 ,  H05H1/28

CPC classification number: H05H1/42 ,  H05H1/28 ,  H05H1/34 ,  H05H1/36 ,  H05H2001/3426 ,  H05H2001/3468

Abstract: A high power DC steam plasma torch system (S) includes a steam plasma torch assembly (1) wherein superheated steam (46) is used as the main plasma forming gas, thereby resulting in a very reactive steam plasma plume. The superheated steam (46) is injected internally directly into the plasma plume via a ceramic lined steam feed tube (25) for reducing condensation of steam before reaching the plasma plume. The superheated steam (46) flows through a gas vortex (16) which has tangentially drilled holes thereby resulting in a high speed gas swirl that minimizes electrode erosion. In the present steam plasma torch system (S), the plasma torch assembly (1) is ignited using an ignition contactor which is housed external to the plasma torch assembly (1). The superheated steam (46) is injected into the plasma plume using a water cooled steam vortex generator assembly (15).

Abstract translation: 高功率DC蒸汽等离子体焰炬系统（S）包括蒸汽等离子体炬组件（1），其中过热蒸汽（46）用作主等离子体形成气体，从而导致非常反应的蒸气等离子体羽流。 过热蒸汽（46）通过陶瓷内衬蒸汽进料管（25）内部直接注入到等离子体羽流中，用于在到达等离子体羽流之前减少蒸汽冷凝。 过热蒸汽（46）流过具有切向钻孔的气体涡流（16），从而导致高速气体涡流，使电极腐蚀最小化。 在本蒸汽等离子体焰炬系统（S）中，使用位于等离子体焰炬组件（1）外部的点火式接触器来点燃等离子炬组件（1）。 使用水冷蒸汽涡流发生器组件（15）将过热蒸汽（46）注入到等离子体羽流中。