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- [2] I have been working with RSW for the past 20 years, and recently my company has made the switch to galvanized dual-phase material. The welding machine I am using used to get around 5000 welds before we had to take a look at the tips; now we are getting less than 200. We have been using the standard FE-25 tips, but now we are finding that the welding window is much smaller and cold welds are popping up. What am I doing wrong? [J]. WELDING JOURNAL, 2009, 88 (11) : 22 - +