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    • 1. 发明申请
    • COLD METAL TRANSFER HARDFACING OF BUCKETS
    • BUCKETS的金属转移危害
    • US20120294729A1
    • 2012-11-22
    • US13108939
    • 2011-05-16
    • Attila SzaboJohn Drake Vanselow
    • Attila SzaboJohn Drake Vanselow
    • F03B3/12B23K9/24
    • B23K9/044B23K9/09B23K2101/001F01D5/225F05D2230/232F05D2230/30F05D2300/506F05D2300/702
    • In one embodiment, the invention provides a method of hardfacing a portion of a bucket subject to mechanical stress, the method comprising: contacting a surface of a bucket with a hardfacing filler metal connected to a welding nozzle to establish an arc between the surface and the filler metal and form a molten weld pool comprising the filler metal and a material of the surface; extending the filler metal into the molten weld pool to short circuit the arc; withdrawing the filler metal from the molten weld pool to re-establish the arc; moving the welding nozzle along the surface; and re-extending the filler metal into the molten weld pool to short circuit the arc, deposit additional filler metal into the molten weld pool, and liquify additional material of the surface into the molten weld pool.
    • 在一个实施例中,本发明提供了一种使机械应力的铲斗的一部分表面硬化的方法,该方法包括:将铲斗的表面与连接到焊接喷嘴的硬化填充金属接触,以在表面和 填充金属并形成包括填充金属和表面材料的熔融熔池; 将填充金属延伸到熔融焊池中以使电弧短路; 从熔融焊池中取出填充金属以重新建立电弧; 沿着表面移动焊接喷嘴; 并将填充金属重新延伸到熔融熔池中以使电弧短路,将另外的填充金属沉积到熔融焊池中,并将表面的附加材料液化成熔融熔池。