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    • 2. 发明授权
    • Nickel-plated brazing product having improved corrosion performance
    • 具有改善腐蚀性能的镀镍钎焊制品
    • US06796484B2
    • 2004-09-28
    • US10060117
    • 2002-01-31
    • Adrianus Jacobus WittebroodJacques Hubert Olga JosephJoop Nicolaas Mooij
    • Adrianus Jacobus WittebroodJacques Hubert Olga JosephJoop Nicolaas Mooij
    • B23K3538
    • C25D5/12B23K35/0238B23K35/286Y10T428/12736Y10T428/12764
    • A brazing product, e.g. a brazing sheet product, having an aluminium layer made of an aluminium alloy comprising silicon in an amount in the range of 2 to 18 weight %, and a layer comprising nickel on the outer surface of the aluminium layer such that taken together the aluminium layer and all layers exterior thereto form the filler metal for a brazing operation. The filler metal has a composition containing at least one element: (i) with a smaller exchange current density for the Hydrogen Evolution Reaction (“HER”) than nickel and/or (ii) such that the electro-chemical potential difference between particles of Ni-aluminide(s) of the filler and the aluminium alloy matrix of the filler is reduced. The filler metal's mol-ratio of Ni to such element(s) is in the range of 10:(0.3-30). The invention also relates to a method of manufacturing a brazed assembly using the brazing product, and to a brazed assembly comprising at least one component made of the brazing product.
    • 钎焊产品,例如 钎焊片材产品,其具有由铝合金制成的铝层,该铝层包含2至18重量%范围内的硅,以及在铝层的外表面上包含镍的层,使得铝层和 其外部的所有层形成用于钎焊操作的填充金属。 填充金属具有含有至少一种元素的组合物:(i)氢析晶反应(“HER”)的交换电流密度小于镍和/或(ii),使得其间的电化学势差 填料的镍铝化物和填料的铝合金基体减少。 Ni与这种元素的填充金属摩尔比在10:(0.3-30)的范围内。 本发明还涉及使用钎焊产品制造钎焊组件的方法,以及包括由钎焊产品制成的至少一个部件的钎焊组件。
    • 3. 发明授权
    • Method and arrangement for improving quality in fusion welding operations
    • 融合焊接作业质量的方法和装置
    • US06634544B1
    • 2003-10-21
    • US09700152
    • 2001-02-12
    • Fred Galesloot
    • Fred Galesloot
    • B23K3538
    • B23K26/1494B23K9/16B23K2103/10
    • Arrangement for improving quality in fusion welding operations where protective gas is supplied to the welding point via a hose line. The arrangement comprises means (5, 6), such as a bypass line connected parallel to the solenoid valve (4) which is usually connected into the protective-gas hose (3), in order make a small flush-gas flow pass through the protective-gas hose (3) or a considerable part of its length, when the normal protective-gas flow is shut off. In this way, the quantity of impurities brought along by the protective-gas flow from the inside of the protective-gas hose (3) and supplied to the pool is reduced.
    • 用于提高通过软管线将保护气体供应到焊接点的熔焊操作中的质量的布置。 该装置包括装置(5,6),例如平行于电磁阀(4)连接的旁通管线,该旁路管线通常连接到保护气体软管(3)中,以使小的冲洗气体流通过 保护气体软管(3)或其长度相当大的部分,当正常的保护气体流动被关闭时。 以这种方式,保护气体管道从保护气体软管(3)的内部带来的并且供应到池中的杂质的量减少。
    • 5. 发明授权
    • Gas shielded arc welding flux cored wire
    • 气体保护电弧焊药芯焊丝
    • US06441334B1
    • 2002-08-27
    • US09123464
    • 1998-07-28
    • Isao AidaTetsuo SugaTsuyoshi KurokawaFusaki KoshiishiHajime Uchiyama
    • Isao AidaTetsuo SugaTsuyoshi KurokawaFusaki KoshiishiHajime Uchiyama
    • B23K3538
    • B23K35/368B23K35/3605
    • Realized is a welding wire containing flux used for a gas shielded arc welding of a direct current/positive polarity mode, with use of which a quantity of sputter generated is small, a good weldability is realized and a weld metal with an excellent toughness is obtained in all the welding positions under application of a welding current in the range of a low current to a medium current, or in a definite manner in the range of 50 to 300 A. The flux contains 0.7 to 3 wt % Al, 0.1 to 1.0 wt % Mg and 1.2 to 5 wt % BaF2, each content being a value in wt % to a total weight of the wire and the sum of a content of Al plus a content of Mg multiplied by 3 being in the range of 1.3 to 5 wt %, a filling ratio of the flux to the total weight of the wire is in the range of 5 to 30 wt %, a total Mn content in a steel sheath and the flux combined is in the range of 0.2 to 1.9 wt % and a total Si content in the steel sheath and the flux combined in the range of 0.001 to 0.9 wt %.
    • 实现了包含用于直流/正极性模式的气体保护电弧焊的焊剂的焊丝,其中使用其中产生的溅射量小,实现良好的可焊性并获得具有优异韧性的焊接金属 在焊接电流的所有焊接位置,在低电流至中等电流的范围内,或在50〜300A的范围内以一定的方式施加焊接位置。焊剂含有0.7〜3重量%的Al,0.1〜1.0 重量%Mg和1.2〜5重量%BaF 2,各含量相对于导线的总重量的重量%,Al的含量与Mg的含量之和乘以3之和在1.3〜5的范围内 重量%时,焊剂与焊丝总重量的填充率在5〜30重量%的范围内,钢壳中的总Mn含量和焊剂组合在0.2〜1.9重量%的范围内, 钢鞘中的总Si含量和助焊剂组合在0.001至0.9重量%的范围内。
    • 6. 发明授权
    • Welding technique for forming passive chromium oxide film in weld and gas feed system for welding
    • 焊接和焊接进气系统中形成无源氧化铬膜的焊接技术
    • US06563072B1
    • 2003-05-13
    • US09509707
    • 2000-06-08
    • Tadahiro OhmiTakahisa NittaYasuyuki ShiraiOsamu Nakamura
    • Tadahiro OhmiTakahisa NittaYasuyuki ShiraiOsamu Nakamura
    • B23K3538
    • B23K35/38B23K9/0026B23K9/16B23K35/383C23C8/10
    • Welding of material such as a piping using ferrite system stainless steel, in which a back sealed gas used for conventional welding is switched from argon gas (or a hydrogen gas/argon gas mix) to an argon gas to which an oxidizing gas is doped at the time of forming a chromium oxide passivation film. Welding conditions are set at the temperature in which the inner surface of the piping does not melt at the time of forming the chromium oxide passivation film. The temperature of the welding piping is set uniformly between welding conditions in conventional welding and welding conditions at the time of forming the chromium oxide passivation film, and in order to replace gases used with conventional welding with gases used at the time of forming the chromium oxide passivation film. A cycle of one round or more is performed under the welding conditions for forming a chromium oxide passivation film, thereby, to form the chromium oxide passivation film on a weld in concurrence with welding.
    • 将用于常规焊接的背面密封气体从氩气(或氢气/氩气混合物)切换到掺杂有氧化气体的氩气的铁氧体系不锈钢的管道的材料的焊接 形成氧化铬钝化膜的时间。 焊接条件设定为在形成氧化铬钝化膜时管道的内表面不熔化的温度。 在形成氧化铬钝化膜时,焊接管道的温度在常规焊接和焊接条件的焊接条件之间均匀地设置,并且为了代替在形成氧化铬时使用的气体的常规焊接中使用的气体 钝化膜。 在形成氧化铬钝化膜的焊接条件下进行一圈以上的循环,由此在焊接上形成与焊接同时的氧化铬钝化膜。
    • 7. 发明授权
    • Welding apparatus for forming chromium oxide passivated film at welded portion
    • 焊接部形成氧化铬钝化膜的焊接装置
    • US06518534B1
    • 2003-02-11
    • US09755379
    • 2001-01-05
    • Sowmya KrishnanTadahiro Ohmi
    • Sowmya KrishnanTadahiro Ohmi
    • B23K3538
    • C23C8/18B23K35/383
    • An improved method for welding and passivation forms a chromium oxide passivated film over the welded portion during the welding process. In a shielding step, a backshield gas, preferably argon, is flowed around the welding site. In a welding step, an arc gas, preferably argon with approximately 10% hydrogen and less than 1 ppm moisture content, is flowed through the welding head and a welded joint is formed, for example by high speed tungsten-inert gas (TIG) orbital welding. In the passivation step, a process gas, preferably argon with approximately 30-100 ppm of oxygen and less than 1 ppm moisture content, and preferably less than 1 ppb moisture content, is flowed over the welded portion to form a chromium oxide passivated film on the welded portion. The process gas is passed through a gas purifier prior to being flowed over the welded portion to maintain its moisture level at less than 1 ppb. A welding and passivation apparatus for carrying out the improved method is also described having a welding system, such as a high speed tungsten-inert gas (TIG) orbital tube welding system or the like, and a gas supply system equipped to deliver the backshield gas, arc gas and process gas with the required compositions and with the proper timing during the welding and passivation process. An electronic timing unit controls the gas supply system to release the gases into the welding head at the proper time during the process.
    • 焊接和钝化的改进方法在焊接过程中在焊接部分上形成氧化铬钝化膜。 在屏蔽步骤中,在焊接部位周围流动优选氩气的后挡板气体。 在焊接步骤中,电弧气体,优选具有约10%氢气和小于1ppm水分含量的氩气流过焊接头,并且例如通过高速钨惰性气体(TIG)轨道形成焊接接头 焊接。 在钝化步骤中,处理气体,优选具有大约30-100ppm氧气和小于1ppm水分含量,优选小于1ppb水分含量的氩气流过焊接部分,以形成氧化铬钝化膜 焊接部分。 工艺气体在流过焊接部分之前通过气体净化器,以保持其水分含量低于1ppb。 还描述了一种用于执行改进方法的焊接和钝化装置,其具有诸如高速钨惰性气体(TIG)轨道管焊接系统等的焊接系统,以及配备用于将后挡板气体 ,电弧气和具有所需组成的工艺气体以及焊接和钝化过程中的适当时机。 电子定时单元控制气体供应系统,以在过程中的适当时间将气体释放到焊接头中。
    • 8. 发明授权
    • Welding method for forming chromium oxide passivated film at welded portion
    • 焊接部分形成氧化铬钝化膜的焊接方法
    • US06172320B2
    • 2001-01-09
    • US09163736
    • 1998-09-30
    • Sowmya KrishnanTadahiro Ohmi
    • Sowmya KrishnanTadahiro Ohmi
    • B23K3538
    • C23C8/18B23K35/383
    • An improved method for welding and passivation forms a chromium oxide passivated film over the welded portion during the welding process. In a shielding step, a backshield gas, preferably argon, is flowed around the welding site. In a welding step, an arc gas, preferably argon with approximately 10% hydrogen and less than 1 ppm moisture content, is flowed through the welding head and a welded joint is formed, for example by high speed tungsten-inert gas (TIG) orbital welding. In the passivation step, a process gas, preferably argon with approximately 30-100 ppm of oxygen and less than 1 ppm moisture content, and preferably less than 1 ppb moisture content, is flowed over the welded portion to form a chromium oxide passivated film on the welded portion. The process gas is passed through a gas purifier prior to being flowed over the welded portion to maintain its moisture level at less than 1 ppb. A welding and passivation apparatus for carrying out the improved method is also described having a welding system, such as a high speed tungsten-inert gas (TIG) orbital tube welding system or the like, and a gas supply system equipped to deliver the backshield gas, arc gas and process gas with the required compositions and with the proper timing during the welding and passivation process. An electronic timing unit controls the gas supply system to release the gases into the welding head at the proper time during the process.
    • 焊接和钝化的改进方法在焊接过程中在焊接部分上形成氧化铬钝化膜。 在屏蔽步骤中,在焊接部位周围流动优选氩的后挡板气体。 在焊接步骤中,电弧气体,优选具有约10%氢气和小于1ppm水分含量的氩气流过焊接头,并且例如通过高速钨惰性气体(TIG)轨道形成焊接接头 焊接。 在钝化步骤中,处理气体,优选具有大约30-100ppm氧气和小于1ppm水分含量,优选小于1ppb水分含量的氩气流过焊接部分,以形成氧化铬钝化膜 焊接部分。 工艺气体在流过焊接部分之前通过气体净化器,以保持其水分含量低于1ppb。 还描述了一种用于执行改进方法的焊接和钝化装置,其具有诸如高速钨惰性气体(TIG)轨道管焊接系统等的焊接系统,以及配备用于将后挡板气体 ,电弧气和具有所需组成的工艺气体以及焊接和钝化过程中的适当时机。 电子定时单元控制气体供应系统,以在过程中的适当时间将气体释放到焊接头中。