Question
Is slag entrapment more likely to occur with gas welding than metal-arc welding? Explain.
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When compared to SMAW (Shielded Metal Arc Welding), the cooling rate of GMAW (Gas Metal Arc Welding) is higher, so cracking in the HAZ tends to occur in hardenable steel welds. What is the main reason why the cooling rate of GMAW is higher than that of SMAW? Please explain it briefly and give reasons for it.
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