To prevent nesting—a tangle of wire that halts the wire from being fed—during FCAW welding, always use knurled V- or U-groove drive rolls in your wire feeder. Compared to a GMAW solid welding wire (which uses a smooth V-groove drive roll), FCAW wire is much softer (due to its tubular design) and if you use the incorrect drive roll, it can easily compress the wire.
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2009/8/13· Clearing it requires the operator to stop welding, cut the wire, discard the wire in the gun, and refeed new wire through the liner. It also may require cleaning or changing the contact tip because of the burnback caused when the wire stops feeding. â€¨There are several ways to feed aluminum wire: Push only, spool gun, push-pull system and continuous feed push only system.
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Causes and control of welding cracks in electron-beam …
2013/7/1· Welding joint of GH4169 alloy with a good formation was obtained. No macroscopic defects occurred in the joint. The weld had mainly a dendritic structure; the base metal was a solid solution of Ni, Cr, and Fe, and the strengthening-phase particles such as Ni 3 Nb were dispersively distributed along the grain boundary.
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The new publiion of KOBELCO WELDING TODAY was up-loaded 5.27 Notice of 167th Ordinary General Meeting of Shareholders 5.26 Emergency measures against the novel coronavirus (Notice No. 6) 5.22 Kobe Steel joins the IP open access declaration 5.15
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