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    Plasma torch of high cooling performance and components therefor
    3.
    发明授权
    Plasma torch of high cooling performance and components therefor 有权
    等离子火炬的高冷却性能及其组件

    公开(公告)号：US06268583B1

    公开(公告)日：2001-07-31

    申请号：US09572935

    申请日：2000-05-18

    申请人： Yoshihiro Yamaguchi ,  Kazuhiro Kuraoka

    发明人： Yoshihiro Yamaguchi ,  Kazuhiro Kuraoka

    IPC分类号： B23K1000

    CPC分类号： B23K10/00 ,  H05H1/34 ,  H05H1/3405 ,  H05H2001/3442 ,  H05H2001/3457

    摘要： An object is to provide a plasma torch having a function to achieve fully satisfactory cooling of the nozzle and shield cap. A plasma torch 1 comprises a nozzle 17 positioned at the front end portion of the torch 1 so as to cover an electrode 13, with a plasma gas passage 37 interposed therebetween. A shield cap 21 is mounted at the front end of the nozzle 17, and these components 13, 17 and 21 are accommodated in a retainer cap 23. Assist gas passages 45, 55 are formed in the wall of the retainer cap 23, and feed assist gas to the vicinity of the plasma arc 81. A space enclosed by the retainer cap 23, nozzle 17 and shield cap 21 is a cooling water passage 63. The retainer cap 23, nozzle 17 and shield cap 21 faces the cooling water passage 63, and hence directly and powerfully water-cooled.

    摘要翻译： 目的是提供一种等离子体焰炬，其具有完全令人满意地冷却喷嘴和屏蔽帽的功能。 等离子体焰炬1包括位于割炬1的前端部分的喷嘴17，以覆盖电极13，其中插入有等离子体气体通道37。 屏蔽帽21安装在喷嘴17的前端，这些部件13,17和21被容纳在保持器盖23中。辅助气体通道45,55形成在保持盖23的壁中，并且进给 辅助气体到等离子弧81附近。由保持盖23，喷嘴17和屏蔽盖21包围的空间是冷却水通道63.保持盖23，喷嘴17和屏蔽盖21面向冷却水通道63 ，因此直接有力地水冷。

    PLASMA TORCH, PLASMA TORCH NOZZLE, AND PLASMA-WORKING MACHINE
    4.
    发明申请
    PLASMA TORCH, PLASMA TORCH NOZZLE, AND PLASMA-WORKING MACHINE 有权
    等离子喷枪，等离子喷枪喷嘴和等离子工作机

    公开(公告)号：US20100155373A1

    公开(公告)日：2010-06-24

    申请号：US12600616

    申请日：2008-06-27

    申请人： Yoshihiro Yamaguchi ,  Kazuhiro Kuraoka

    发明人： Yoshihiro Yamaguchi ,  Kazuhiro Kuraoka

    IPC分类号： B23K10/00

    CPC分类号： H05H1/34 ,  H05H2001/3426 ,  H05H2001/3457

    摘要： A plasma torch includes a torch main unit and a nozzle. The torch main unit has a nozzle seat member on which the nozzle is mounted. The nozzle is arranged to move toward or away from the nozzle seat member in a direction substantially parallel to a center axis of the nozzle when the nozzle is mounted on or removed from the nozzle seat member. The nozzle has an electroconductive surface facing the nozzle seat member. The torch main unit has an elastic electric contact portion contacting with the electroconductive surface of the nozzle to form an electroconductive path for a pilot arc to the nozzle. The electroconductive surface of the nozzle presses the electric contact portion in the direction substantially parallel to the center axis when the nozzle is moved toward the nozzle seat member to mount the nozzle on the nozzle seat member.

    摘要翻译： 等离子体焰炬包括火炬主单元和喷嘴。 割炬主体具有安装喷嘴的喷嘴座构件。 喷嘴被布置成当喷嘴安装在喷嘴座构件上或从喷嘴座构件移除时沿大致平行于喷嘴的中心轴线的方向朝向或远离喷嘴座构件移动。 喷嘴具有面向喷嘴座构件的导电表面。 手电筒主体具有与喷嘴的导电表面接触的弹性电接触部分，以形成用于引导电弧到喷嘴的导电路径。 当喷嘴朝向喷嘴座构件移动以将喷嘴安装在喷嘴座构件上时，喷嘴的导电表面在基本上平行于中心轴线的方向上按压电接触部分。

    Plasma machining electrode and plasma machining device
    8.
    发明授权
    Plasma machining electrode and plasma machining device 失效
    等离子体加工电极和等离子体加工装置

    公开(公告)号：US06583378B1

    公开(公告)日：2003-06-24

    申请号：US09717140

    申请日：2000-11-22

    申请人： Yoshihiro Yamaguchi ,  Kazuhiro Kuraoka ,  Tetsuya Kabata

    发明人： Yoshihiro Yamaguchi ,  Kazuhiro Kuraoka ,  Tetsuya Kabata

    IPC分类号： B23K1000

    CPC分类号： H05H1/34 ,  H05H2001/3442

    摘要： The invention prolongs the electrode lifetime of plasma machining electrodes having a hafnium or zirconium insert. A hafnium or zirconium insert 21 inserted into the tip of a copper holder 22 protrudes from the tip of the copper holder 22. The protrusion length L is not larger than the diameter D of the insert, preferably not larger than 0.5 mm. The protruding portion 21a of the insert has a rounded section without sharp angles. The rear surface 21 of the insert is exposed to the flow of the cooling water inside the electrode. At least during the generation of the pilot arc, a plasma gas containing at least 5 mol % nitrogen is used.

    摘要翻译： 本发明延长了具有铪或锆插入物的等离子体加工电极的电极寿命。 插入铜保持器22的尖端的铪或锆插入件21从铜保持器22的前端突出。突出长度L不大于插入件的直径D，优选不大于0.5mm。 插入件的突出部分21a具有没有锐角的圆形部分。 插入件的后表面21暴露于电极内的冷却水的流动。 至少在导电弧的产生期间，使用含有至少5mol％氮的等离子体气体。

    Plasma cutting process and machine
    10.
    发明授权
    Plasma cutting process and machine 有权
    等离子切割工艺和机器

    公开(公告)号：US07067762B2

    公开(公告)日：2006-06-27

    申请号：US10723796

    申请日：2003-11-25

    申请人： Yoshihiro Yamaguchi ,  Tetsuya Kabata ,  Kazuhiro Kuraoka ,  Takahiro Iriyama

    发明人： Yoshihiro Yamaguchi ,  Tetsuya Kabata ,  Kazuhiro Kuraoka ,  Takahiro Iriyama

    IPC分类号： B23K10/00

    CPC分类号： B23K10/00 ,  B23K10/006

    摘要： A plasma cutting machine is provided in which a dross adhesion inhibitor is jetted from a plasma torch toward the cutting start position (piercing position) of the object material. A dross adhesion inhibitor supply flow path for feeding the dross adhesion inhibitor is connected to an assist gas feeding line in which an assist gas for assisting cutting of the object material with the plasma arc flows.

    摘要翻译： 提供了一种等离子体切割机，其中从等离子体焰炬向目标材料的切割开始位置（刺穿位置）喷射浮渣粘附抑制剂。 用于供给浮渣粘附抑制剂的浮渣粘附抑制剂供给流路连接到辅助气体供给管线，其中辅助气体用于辅助用等离子体电弧切割物体材料。