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公开(公告)号：US5935458A
公开(公告)日：1999-08-10
申请号：US929848
申请日：1997-09-15
CPC分类号： B23K9/04
摘要： A wire thermal spray gun such as a two-wire arc gun has a speed regulator for a DC pull motor in the gun. Armature current corresponds to pulling torque on the pull motor depending on load resistance of the wires. A DC push motor is between a wire supply and the gun, with wire conduits connecting to the gun. A controller provides the push motor with a controlled pushing torque. Feedback of the armature current of the pull motor to the controller adjusts the pushing torque in direct response to change in the pulling torque, such that load sharing is maintained between the push motor and the pull motor.
摘要翻译： 诸如双线弧枪的线热喷枪具有用于枪中的直流拉马达的速度调节器。 电枢电流对应于牵引电机上的拉力矩，这取决于电线的负载电阻。 直流推动电机位于电源线和喷枪之间，导线连接枪。 控制器为推动马达提供受控的推力。 拉动电机到控制器的电枢电流的反馈可以直接响应于拉力转矩的变化来调节推力转矩，从而保持推力和牵引电机之间的负载共享。
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公开(公告)号：US5014916A
公开(公告)日：1991-05-14
申请号：US514648
申请日：1990-04-25
IPC分类号： B05B7/20
CPC分类号： B05B7/205
摘要： A gas cap for a thermal spray gun has a passage therethrough including an entrance channel, an exit channel, and an intermediate channel connecting between the entrance and exit channels. The entrance channel is cylindrical on an entrance axis, and the exit channel is convergingly conical on an exit axis oriented at 45.degree. to the entrance axis. The intermediate channel is symmetrical to the plane of the entrance and exit axes and has a near portion and a far portion. The near portion is semicylindrical about the entrance axis, and the far portion is semicylindrical about a far axis segment lying in the plane. That segment is offset from the entrance axis away from the exit end of the gas cap, and is oriented at 14.degree. to the entrance axis, the three axes intersecting at a common point.
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公开(公告)号：US4668852A
公开(公告)日：1987-05-26
申请号：US698305
申请日：1985-02-05
申请人： Thomas J. Fox , Lawrence A. Saia , Robert F. Savill, Jr. , Richard D. Trapani , Melvyn E. Turner
发明人： Thomas J. Fox , Lawrence A. Saia , Robert F. Savill, Jr. , Richard D. Trapani , Melvyn E. Turner
CPC分类号： B05B7/224
摘要： An arc spray gun has a generally frusto-conical head member of electrically insulating material, with the small end facing forwardly in the direction of spray. Wire is fed through a pair of electrically conductive tubular wire guides containing pressure contact means that extend through the head member and converge to contact the wire ends for arc formation and melting of the metal. A gas jet nozzle provides compressed gas for atomization and spraying of the molten metal. A first gas cap is disposed coaxially on the head with rear and forward gas seals so as to define an annular gas chamber. A secondary gas is supplied to the annular chamber, and the first gas cap has a pair of diametrically opposite orifices therein for directing the secondary gas from the chamber to modify the molten metal spray in a fan shape. The orifice may have elongated cross sections to produce a rough coating surface if desired. A second gas cap is adapted to replace the first gas cap in sealing relationship with only the rear gas seal so as to provide, as an option, an annular flow of the secondary gas about the wire ends. A pair of hose assemblies supply the primary and secondary gases seprately to the gun, as well as wire and arc current. A distribution block on the gun separates the gas flow and metal wire from the hose assembly.
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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：US5408066A
公开(公告)日：1995-04-18
申请号：US135703
申请日：1993-10-13
申请人： Richard D. Trapani , Roopnarine Tilkaran , Joseph P. Mercurio , Henry A. Budke, Jr. , Michael R. D'Arpa , Burton A. Kushner
发明人： Richard D. Trapani , Roopnarine Tilkaran , Joseph P. Mercurio , Henry A. Budke, Jr. , Michael R. D'Arpa , Burton A. Kushner
CPC分类号： B23K10/027
摘要： A powder injection apparatus for a plasma spray gun includes a block having channelling therein for liquid coolant. A powder port extends through the block in proximity to the channelling so as to be cooled by coolant flowing therein. The port has a powder inlet receptive of spray powder in a carrier gas, and has a powder outlet end formed as a tubular protrusion extending from the block. A pair of extensions extend from the block proximate the protrusion on diametrically opposite sides thereof. Each extension has at least one orifice therein disposed so as to direct gas onto the protrusion. A pair of additional gas exit openings direct gas to the face of the gun.
摘要翻译： 一种用于等离子体喷枪的粉末喷射装置，包括在其中引导液体冷却剂的块体。 粉末端口延伸穿过块体靠近沟道，以便由其中流动的冷却剂冷却。 该端口具有容纳在载气中的喷雾粉末的粉末入口，并且具有形成为从该块延伸的管状突出部的粉末出口端。 一对延伸部从邻近突起的块在其直径相对的侧面延伸。 每个延伸部具有至少一个孔，其中设置有将气体引导到突出部上。 一对额外的气体出口将气体引导到枪的表面。
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