COLD METAL TRANSFER HARDFACING OF BUCKETS

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 f...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SZABO ATTILA, VANSELOW JOHN DRAKE
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING HEATING LIGHTING MACHINE TOOLS MACHINES OR ENGINES FOR LIQUIDS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PRODUCING MECHANICAL POWER SOLDERING OR UNSOLDERING TRANSPORTING WEAPONS WELDING WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	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.