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Weld-seam porosity
Cause:
Insufficient shielding-gas flow at the beginning or end of welding
Remedy:
Increase gas pre-flow or gas post-flow
Cause:
Rusty or poor quality wire electrode
Remedy:
Use high-quality wire electrode with no impurities
Cause:
Too much parting agent applied
Remedy:
Wipe off excess parting agent / apply less parting agent
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