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公开(公告)号：US5961856A
公开(公告)日：1999-10-05
申请号：US119069
申请日：1998-07-10
CPC分类号： B23K9/0061
摘要： A hopper feeds powder underwater to a welding torch. The hopper includes a housing having a lower chamber and an integral upper chamber. An inlet joins the upper chamber for receiving powder and a pressurized carrier gas. A powder outlet joins the lower chamber for discharging the powder to the torch. A gas outlet joins the upper chamber for releasing the carrier gas. And, a control valve joins the gas outlet for selectively controlling pressure internal the housing.
摘要翻译： 一个漏斗将水下的粉末送入焊枪。 料斗包括具有下室和整体上室的壳体。 入口连接上腔室以接收粉末和加压载气。 粉末出口连接下室，用于将粉末排放到割炬。 气体出口连接上部腔室以释放载气。 并且，控制阀连接气体出口以选择性地控制壳体内部的压力。
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公开(公告)号：US5719369A
公开(公告)日：1998-02-17
申请号：US629290
申请日：1996-04-08
CPC分类号： B23K10/02 , B23K9/0061 , C21D1/00 , C21D9/50
摘要： Stress corrosion cracking damage to stainless steels and nickel base superalloys is repaired by underwater plasma transferred arc welding which under conditions which reduce residual tensile stresses in the weld and adjacent portions of the repaired structure.
摘要翻译： 在不锈钢和镍基超级合金的应力腐蚀开裂损坏下，通过水下等离子体转移电弧焊修复，在焊接和修复结构的相邻部分减少残余拉伸应力的条件下。
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3.发明授权Method for developing residual compressive stress in stainless steel and nickel base superalloys 失效在不锈钢和镍基超级合金中开发残余压应力的方法
公开(公告)号：US5710405A
公开(公告)日：1998-01-20
申请号：US629669
申请日：1996-04-09
CPC分类号： C21D1/00 , B23K10/02 , B23K9/0061 , C21D9/50
摘要： Compressive residual stresses can be developed by underwater plasma transferred arc welding. The development of these compressive stresses act to prevent hot cracking and He embrittlement that can develop during welding or stress corrosion cracking that can develop subsequent to the welding operation.
摘要翻译： 压电残余应力可以通过水下等离子体转移电弧焊开发。 这些压缩应力的发展用于防止在焊接过程中可能发生的热裂纹和He脆化，或者在焊接操作之后可以发展的应力腐蚀开裂。
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公开(公告)号：US5690844A
公开(公告)日：1997-11-25
申请号：US701930
申请日：1996-08-26
CPC分类号： B23K10/02 , B23K9/0061
摘要： An apparatus and method feeds weld material to an underwater plasma transferred arc welding torch. The weld material comprises a powder, which can be entrained in a fluidizing gas flow. The weld material is fed by the apparatus from a first supply through at least one conduit to a supply container. The apparatus comprises a first powder supply pressurized with a powder carrier gas positioned above the surface of the body of water; a second powder supply container positioned below the surface of the body of water and the second powder supply container comprising at least one powder outlet port and a gas vent open to the above surface atmosphere; at least one powder conduit connecting the first container with the second container; an underwater welding torch positioned near the second container and having at least one powder inlet; and at least one powder conduit connecting the second powder supply container to the at least one powder inlet of the torch. The method of underwater welding includes transferring of weld filler powder from the underwater supply container to the torch at a reduced flow rate by venting at least a portion of the carrier gas to the atmosphere above the surface of the body of water.
摘要翻译： 一种装置和方法将焊接材料馈送到水下等离子体转移电弧焊炬。 焊接材料包括可以夹带在流化气体流中的粉末。 焊接材料由设备从第一供应通过至少一个导管供给到供应容器。 该装置包括用位于水体表面上方的粉末载体气体加压的第一粉末供应源; 第二粉末供应容器，其位于水体表面下方，第二粉末供应容器包括至少一个粉末出口和与上述表面气氛相通的排气口; 将所述第一容器与所述第二容器连接的至少一个粉末导管; 位于第二容器附近并具有至少一个粉末入口的水下焊枪; 以及将第二粉末供应容器连接到手电筒的至少一个粉末入口的至少一个粉末导管。 水下焊接方法包括：通过将载气的至少一部分排放到水体表面上方的大气中，以较低的流速将焊接填料粉末从水下供应容器转移到割炬。
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公开(公告)号：US5705786A
公开(公告)日：1998-01-06
申请号：US581386
申请日：1995-12-29
CPC分类号： B23K9/0061
摘要： Persistent compressive stresses sufficient to suppress hot cracking, reheat cracking and stress corrosion cracking are developed in welds containing alloys of plural materials by quenching of the weld after onset of solidification but while the weld remains soft or "mushy" at a temperature above the melting point of eutectic alloys which may form. Control of the time of quenching is preferably established during submerged welding by a cup-shaped exclusion fitting which is sized relative to the dimensions of a molten weld pool and the speed of travel of a welding heat source such as a plasma transfer arc torch. The cup-shaped exclusion fitting provides improved protection of the weld and heat source with inert gas supplied thereto while also permitting submerged welding at higher hydrostatic pressures than has heretofore been possible. An improved apparatus for transport of powdered welding materials provides for bleeding off of a portion of a flow of transport gas used to transport the powdered materials and can thus provide a reliable supply of such materials over increased distances and against increased gas pressures without compromising the welding heat source or the quality of the weld.
摘要翻译： 在含有多种材料的合金的焊缝中，通过在凝固开始之后淬火，但焊接在高于熔点的温度下保持柔软或“糊状”，则开发了足以抑制热裂纹，再热裂纹和应力腐蚀开裂的持续压缩应力 的共晶合金。 淬火时间的控制优选通过杯形排除配件在浸没焊接期间建立，杯形排除配件的尺寸相对于熔融焊池的尺寸和焊接热源如等离子体转移电弧焊炬的行进速度。 杯形排除配件提供了对供应的惰性气体的焊接和热源的改进的保护，同时还允许在比迄今为止可能的更高的静水压力下进行浸没式焊接。 用于输送粉末焊接材料的改进装置提供用于输送粉末材料的输送气体流的一部分的渗出，并且因此能够在不损害焊接的情况下提供这种材料在增加的距离和不增加气体压力的可靠供应 热源或焊接质量。
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公开(公告)号：US06265689B1
公开(公告)日：2001-07-24
申请号：US09557392
申请日：2000-04-24
IPC分类号： B23K1000
CPC分类号： H05H1/42 , B23K10/02 , B23K10/027
摘要： A plasma arc torch includes a housing having a nozzle at one end with a central orifice. An electrode extends into the orifice for producing a plasma arc. A port is disposed in the nozzle adjacent the orifice for injecting powder into the arc. The port includes an outlet, an inlet, and a reniform manifold extending therebetween for laterally distributing the powder about the nozzle orifice. In this way, the powder may be carried to the torch underwater and is distributed circumferentially about the plasma arc while simultaneously diffusing its carrier gas.
摘要翻译： 等离子弧焊炬包括在一端具有中心孔的喷嘴的壳体。 电极延伸到孔中以产生等离子弧。 一个端口设置在邻近孔口的喷嘴中，用于将粉末注入电弧。 该端口包括在其间延伸的出口，入口和肾形歧管，用于横向地分布围绕喷嘴孔的粉末。 以这种方式，粉末可以在水下运送到火炬，并围绕等离子体电弧周向分布，同时使其载气扩散。
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公开(公告)号：US07709057B2
公开(公告)日：2010-05-04
申请号：US10409523
申请日：2003-04-08
CPC分类号： C23C14/042 , C23C4/01 , C23C4/02 , C23C14/048
摘要： Described herein is a method for providing a clean edge at the interface of a portion of a substrate coated with a coating system and an adjacent portion of the substrate which is uncoated. The method includes the step of forming a zone of non-adherence on the substrate portion which is to be uncoated, prior to application of the coating system. The zone of non-adherence is adjacent the interface, so that the coating system will not adhere to the zone of non-adherence, but will adhere to the portion of the substrate which is to be coated with the coating system.
摘要翻译： 本文描述了一种在涂覆有涂层系统的基底的一部分和未涂覆的基底的相邻部分的界面处提供清洁边缘的方法。 该方法包括在施加涂覆系统之前，在待涂覆的基底部分上形成非附着区域的步骤。 非附着区域与界面相邻，因此涂层体系不会粘附到非粘附区域，而是粘附到待涂覆系统的基材部分上。
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公开(公告)号：US06592948B1
公开(公告)日：2003-07-15
申请号：US09683513
申请日：2002-01-11
IPC分类号： C23C402
CPC分类号： C23C14/042 , C23C4/01 , C23C4/02 , C23C14/048
摘要： Described herein is a method for providing a clean edge at the interface of a portion of a substrate coated with a coating system and an adjacent portion of the substrate which is uncoated. The method includes the step of forming a zone of non-adherence on the substrate portion which is to be uncoated, prior to application of the coating system. The zone of non-adherence is adjacent the interface, so that the coating system will not adhere to the zone of non-adherence, but will adhere to the portion of the substrate which is to be coated with the coating system.
摘要翻译： 本文描述了一种在涂覆有涂层系统的基底的一部分和未涂覆的基底的相邻部分的界面处提供清洁边缘的方法。 该方法包括在施加涂覆系统之前，在待涂覆的基底部分上形成非附着区域的步骤。 非附着区域与界面相邻，因此涂层体系不会粘附到非粘附区域，而是粘附到待涂覆系统的基材部分上。
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公开(公告)号：US06963044B2
公开(公告)日：2005-11-08
申请号：US10682228
申请日：2003-10-08
IPC分类号： B05B15/04 , B05B7/22 , B05D1/10 , B23K9/04 , B23K10/00 , B23K10/02 , C23C4/02 , C23C4/08 , C23C4/12 , C23C6/00 , C23C26/02 , F01D5/28 , H05H1/42
CPC分类号： B23K10/00 , B23K9/04 , B23K9/044 , B23K10/027 , B23K2101/001 , C23C4/02 , C23C26/02 , F01D5/288 , Y02T50/67
摘要： A local environmental cell for a welding spray gun includes an annular ring having a top surface and a bottom surface, wherein the annular ring is adapted for attachment to an outer perimeter of the spray gun; and a plurality of fluid passageways radially disposed about the annular ring having a plurality of openings in the bottom surface of the ring in fluid communication with a vacuum source for providing a vacuum thereto. The use of the local environmental cell permits deposition of local bond coats as well as minimizes the number of steps associated with welding repair processes. For example, the use of the local environmental cell permits welding and formation of a low oxide bond coat during the welding process, thereby eliminating the need for placing the substrate subsequent to a welding process in a separate spray cell to deposit the bond coating.
摘要翻译： 用于焊接喷枪的局部环境池包括具有顶表面和底表面的环形环，其中环形环适于附接到喷枪的外周边; 以及围绕所述环形环径向设置的多个流体通道，所述环形环在所述环的底表面中具有与真空源流体连通的多个开口，用于向其提供真空。 使用局部环境细胞允许沉积局部粘合涂层，并且最小化与焊接修复过程相关的步骤数量。 例如，使用局部环境细胞允许在焊接过程中焊接和形成低氧化物接合涂层，从而消除了在焊接过程之后将基底放置在单独的喷雾池中以沉积粘结涂层的需要。
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公开(公告)号：US06887528B2
公开(公告)日：2005-05-03
申请号：US10320480
申请日：2002-12-17
申请人： Yuk-Chiu Lau , Farshad Ghasripoor , Robert Anthony Fusaro, Jr. , Raymond Edward Chupp , Donald Joseph Baldwin , Canan Uslu Hardwicke
发明人： Yuk-Chiu Lau , Farshad Ghasripoor , Robert Anthony Fusaro, Jr. , Raymond Edward Chupp , Donald Joseph Baldwin , Canan Uslu Hardwicke
CPC分类号： C23C4/01 , Y10T428/12611
摘要： Method of producing a profiled abradable coating on a substrate in which an abradable ceramic coating composition is applied to a substrate using direct-write technology, or plasma sprayed onto the substrate through a mask or by use of a narrow foot-print plasma gun. These methods of producing abradable coatings are performed in the absence of a grid.
摘要翻译： 在基板上制造成型耐磨涂层的方法，其中使用直接写入技术将可磨损陶瓷涂层组合物施加到基板上，或者通过掩模或通过使用窄脚印等离子体枪喷涂到基板上。 这些生产可磨损涂层的方法是在不存在网格的情况下进行的。
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