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Which of the following is true about flux core arc welding?

Which of the following is true about flux core arc welding? Correct Answer slag removal required

The following are some advantages of flux core arc welding: (i)high deposition rates, (ii)can be used to groove angles as narrow as 30˚, (iii)welds in all positions can be made, (iv)has excellent weld pool control. Some disadvantages are: (i) slag removal required, (ii) generates large volume of fumes and smoke.

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