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公开(公告)号：US4788408A
公开(公告)日：1988-11-29
申请号：US47757
申请日：1987-05-08
CPC分类号： H05H1/34 , H05H1/28 , H05H2001/3436 , H05H2001/3452 , H05H2001/3494
摘要： An arc plasma generating system includes components for adjusting spacing between the cathode and the anode. A piston affixed to the cathode is slidingly positioned in a cylinder partitioning therein a first chamber and a second chamber. The first chamber is receptive of discharged cooling fluid at reduced pressure. A first valve selectively infuses pressurized control fluid into the second chamber such as to move the piston against the reduced pressure and thereby move the cathode axially in a first direction. A second valve selectively discharges the control fluid from the second chamber such that the reduced pressure in the first chamber moves the piston opposite the first direction. Telescoping tubing affixed between the piston and the end wall of the cylinder is located within the cylinder and conveys cooling fluid to the cathode. A flexible electrical cable connected between the cathode and a source of arc current is located within the cylinder member such as to be cooled by fluid therein.
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公开(公告)号：US4445021A
公开(公告)日：1984-04-24
申请号：US292763
申请日：1981-08-14
CPC分类号： H05H1/28 , H05H1/34 , H05H2001/3436 , H05H2001/3484
摘要： A heavy duty plasma spray gun for extended industrial service is disclosed. The gun includes a gas distribution member made of a material having a coefficient of expansion different from that of the parts surrounding it. The gas distribution member is forcibly urged by a resilient member such as a coiled spring against a seal so as to assure the plasma gas is introduced into the gun arc in a manner only defined by the gas distribution member. The gun has liquid cooling for the nozzle (anode) and the cathode. Double seals are provided between the coolant and the arc region and a vent is provided between the seals which provides an indication when a seal has failed. Some parts of the gun are electrically isolated from others by an intermediate member which is formed as a sandwich of two rigid metal face pieces and an insulator disposed between them. The metal face pieces provide a rigid body to attach the remaining parts in proper alignment therewith.
摘要翻译： 公开了一种用于扩展工业服务的重型等离子喷枪。 枪包括由与其周围部分的膨胀系数不同的膨胀系数的材料制成的气体分配构件。 气体分配构件被诸如螺旋弹簧的弹性构件强制地推靠在密封件上，以确保以仅由气体分配构件限定的方式将等离子体气体引入到枪弧中。 枪具有用于喷嘴（阳极）和阴极的液体冷却。 在冷却剂和弧形区域之间提供双重密封，并且在密封件之间提供通气口，当密封件发生故障时提供指示。 枪的一些部分通过中间构件与其他部件电隔离，所述中间构件形成为两个刚性金属面片的夹层和设置在它们之间的绝缘体。 金属面片提供刚体以使其余部分与其正确对准。
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公开(公告)号：US4024369A
公开(公告)日：1977-05-17
申请号：US589723
申请日：1975-06-23
摘要： An arc spray gun in which the ends of two metal wires, respectively connected to opposite terminals of a DC power source, are fed to an intersection point to strike and maintain an electric arc, melting the wires. A gas jet directed at the intersection point sprays the molten metal onto the object to be coated. The wire connected to the positive terminal of the power source is of larger diameter than the negative-terminal-connected wire. Parallel guides are provided for feeding the wires through hollow electrodes converging toward the arc-melting zone, the guide path of the larger wire being straighter than that of the smaller wire.
摘要翻译： 一种电弧喷枪，其中分别连接到直流电源的相对端子的两根金属线的端部被馈送到交叉点以撞击并保持电弧，使电线熔化。 指向交叉点的气体喷射将熔融金属喷射到待涂覆的物体上。 连接到电源正极的电线的直径大于负极端子连接的导线。 提供平行引导件，用于通过朝向电弧熔融区域会聚的中空电极进给电线，较大导线的引导路径比较小导线的引导路径更直。
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