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    • 4. 发明授权
    • Apparatus for distributing cover gas in reduced-width groove during
welding
    • 用于在焊接过程中在较宽的槽中分配覆盖气体的装置
    • US5981897A
    • 1999-11-09
    • US826096
    • 1997-03-28
    • Henry Peter OfferBenedict KazirskisPaul S. Mahoney
    • Henry Peter OfferBenedict KazirskisPaul S. Mahoney
    • B23K9/167B23K9/00B23K9/02B23K9/12B23K9/16B23K9/29
    • B23K9/164B23K9/0213
    • An apparatus for emitting a laminar flow of inert gas at a location inside a reduced-width, high-aspect-ratio (ratio of depth to width) weld groove. The portion of the gas distribution apparatus extending into the groove has a thickness less than the width of the weld groove and distributes inert gas which displaces the ambient atmosphere overlying the molten pool area at the bottom of the weld groove. The gas distribution apparatus may take the form of a tube, a planar array of mutually parallel tubes joined at the sides, a monolithic block having an elongated cross section with a parallel array of channels drilled or machined therein, or a support frame covered by a gas-permeable skin. To achieve a laminar flow, a gas diffusing structure is incorporated in each gas distribution tube. The gas diffusing structures include the following: a compression spring attached to the end of the gas distribution tube and having an opening which is covered by a porous or non-porous cover; a fine-mesh screen which is wrapped around the distal end of the gas distribution tube and having an opening which is closed by a porous closure; a metal wire wool or braided rope which is stuffed inside the tube; or a distal section of the tube is made from porous material and has an opening covered by a porous end cover.
    • 一种用于在窄宽,高纵横比(深度与宽度之比)焊接槽内的位置处发射惰性气体层流的装置。 延伸到槽中的气体分配装置的部分的厚度小于焊接槽的宽度,并且分配惰性气体,其使位于焊接槽底部的熔池区域周围的环境气体移位。 气体分配装置可以采用管的形式,在侧面连接的相互平行的管的平面阵列,具有细长横截面的整体块,其中具有在其中钻孔或加工的平行阵列的通道,或者由 透气性皮肤。 为了实现层流,在每个气体分配管中并入有气体扩散结构。 气体扩散结构包括:压缩弹簧,其附接到气体分配管的端部并且具有由多孔或无孔盖覆盖的开口; 围绕气体分配管的远端缠绕并具有由多孔封闭件关闭的开口的细网筛; 管内填充金属丝绒或编织绳; 或者管的远端部分由多孔材料制成并且具有由多孔端盖覆盖的开口。
    • 5. 发明授权
    • Method and apparatus for joining components with multiple filler
materials
    • 用多种填充材料连接组件的方法和装置
    • US5714735A
    • 1998-02-03
    • US671787
    • 1996-06-20
    • Henry Peter Offer
    • Henry Peter Offer
    • B23K9/167B23K9/10B23K9/12B23K9/133B23K9/29
    • B23K9/123B23K9/1093B23K9/1336
    • A multiple-filler-material guide nozzle assembly for feeding multiple fusible filler metal wire or other metal forms into reduced-width, high-aspect-ratio (ratio of depth to width) metallic joints with control and stability of the filler metal position as it enters the molten pool area. The multiple filler materials are fed concurrently at the same or different feed rates. To control the aiming consistency for each of the multiple fillers even with substantial amounts of "cast" in the filler shape (after being unwound from a spool), the nozzle holes can be curved to match the curvature of the "cast" filler wire. This forces the curved filler wire to consistently follow the predetermined orientation of the curved shape of the nozzle. The multiple nozzles can be used to compensate for weld dilution effects by alloying to generate more favorable uniform, gradient or stepped compositions in joints or cladding. These various composition configurations can be achieved by feeding variable rates of two or more different alloys into the joint. The multiple nozzles can also be used to deliver additives to the weld pool, such as powders for alloying effects including in-situ alloying with noble metal catalytic elements (e.g, palladium) or enrichment with SCC-resistant elements (e.g., chromium).
    • 多填料材料引导喷嘴组件,用于将多根易熔填料金属线或其他金属形式供入到宽度,高纵横比(深度与宽度之比)的金属接头中,其具有填充金属位置的控制和稳定性 进入熔池区域。 多种填料材料以相同或不同的进料速率同时进料。 为了控制多个填料中的每一个的瞄准一致性,即使在填料形状(在从卷轴展开之后)的大量“浇注”时,喷嘴孔可以弯曲以匹配“铸造”填充线的曲率。 这迫使弯曲的填充线一致地遵循喷嘴的弯曲形状的预定取向。 多个喷嘴可用于通过合金化补偿焊接稀释效应,以在接头或包层中产生更有利的均匀,梯度或阶梯组成。 可以通过将两种或更多种不同合金的可变速率喂入接头来实现这些各种组成构型。 多个喷嘴还可以用于将添加剂输送到熔池,例如用于合金化效应的粉末,包括与贵金属催化元素(例如钯)的原位合金化或与SCC抗性元素(例如,铬)的富集)。
    • 9. 发明授权
    • Welding electrode with flat blade and related method of manufacture
    • 具有扁平刀片的焊接电极及相关制造方法
    • US5649355A
    • 1997-07-22
    • US607032
    • 1996-02-26
    • Henry Peter Offer
    • Henry Peter Offer
    • B23K9/02B23K35/02B23K35/04B23K35/40C21D1/00C21D9/50G21C13/02G21C13/087H01R43/00
    • B23K35/0205B23K35/0277B23K35/402B23K9/02B23K9/0213C21D1/00C21D9/50G21C13/02G21C13/087C21D2221/10G21Y2002/104G21Y2002/202G21Y2002/302G21Y2002/303G21Y2002/40G21Y2004/301G21Y2004/50G21Y2004/501Y02E30/40Y10T29/49117
    • A welding electrode for providing a significant improvement in the detrimental tensile residual stress condition on the root side of welds, especially on the inside wall of piping welds. The electrode has a tungsten alloy blade. The blade is made from sheets of tungsten alloy by cutting or stamping. The preferred shape of the blade is an isosceles triangle. The base of the flat triangular blade is secured in a slot formed in an electrode holder. The electrode holder is preferably T-shaped, with the shank of the holder being connected to a conventional welding torch. The holder is made of electrically conductive material, whereby the blade is coupled to the torch for producing an electric arc at the blade tip for welding. The blade is optionally covered with a ceramic coating to prevent arcing to the side walls of the groove formed between the parts being welded. A further option is to incorporate insulating stand-offs which protrude from both flat sides of the electrode blade. These stand-offs serve to maintain a minimum gap between the side walls of the welding groove and the flat sides of the electrode blade, thus preventing the ceramic coating from being scratched off during electrode travel relative to the groove.
    • 一种焊接电极,用于显着改善焊缝根部侧面的有害拉伸残余应力状况,特别是在管道焊缝的内壁上。 电极具有钨合金刀片。 刀片由切割或冲压的钨合金片制成。 叶片的优选形状是等腰三角形。 扁平三角形刀片的基部固定在形成在电极座中的槽中。 电极座优选为T形,保持器的柄与常规焊枪相连。 保持器由导电材料制成,由此刀片联接到割炬上,用于在刀尖处产生用于焊接的电弧。 刀片可选地覆盖有陶瓷涂层,以防止在被焊接的部件之间形成的凹槽的侧壁起弧。 另一个选择是结合从电极刀片的两个平面侧突出的绝缘支架。 这些支架用于保持焊接槽的侧壁和电极刀片的平坦侧面之间的最小间隙,从而防止在电极相对于槽移动期间陶瓷涂层被刮掉。