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Bug holes in 5P+

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Bug holes in 5P+

Postby Dm1223 » Fri Mar 31, 2017 4:16 pm

What causes small bug holes in a 6010 down hill weld?
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Re: Bug holes in 5P+

Postby Otto Nobedder » Fri Mar 31, 2017 6:42 pm

Possibly contamination from the back side. This is not usually a problem with 6010, but if there are oils on the back side, it can do this. Another possibility is the flux is contaminated, perhaps accidentally caught overspray from WD-40 or some other substance. It could also just be a junk brand. Or crappy base metal you're welding. Some steel is just hub caps and brake rotors from a 55 Chevy remelted in a Chinese furnace.

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