I’m at my wit is end cause my Esab Rebel 235 welds has dark patches on steel, Using 0.035-inch wire at 22V, and welds lacks durability. How i can avoid this problem?
Dark patches comes from poor gas coverage or contamination, Check for leaks at 20 CFH argon flow, My Esab Rebel had same issues, Clean steel with acetone before welding, Set wire speed to 230 ipm for consistency, Use 18V for arc stability, Tighten connections secure, Ensure clean joint prep, Use wire brush for prep, Check regulator settings.
weak welds comes from dirty surfaces, Clean with alcohol thorough before welding, My Esab welds strong now, Check gas flow for consistency, Use proper joint fit-up.
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