In FCAW, what is the recommended practice for slag removal between passes?

Study for the Gas Metal Arc Welding Exam, including GMAW, FCAW, and MCAW methods. Use flashcards and multiple choice questions with hints and explanations for effective learning. Get ready for your welding certification!

Multiple Choice

In FCAW, what is the recommended practice for slag removal between passes?

In FCAW, slag forms over each weld pass from the flux and must be removed before the next pass to ensure proper fusion to the previous bead and to prevent slag inclusions or porosity in subsequent welds. Chipping away the slag with a hammer and then cleaning the surface with a wire brush leaves a clean, ready surface for the next pass, promoting good fusion and sound weld quality. Using a solvent to dissolve slag isn’t effective here because slag is a solid flux residue, and solvents would introduce contamination and fire hazards. Leaving slag in place or claiming slag removal isn’t required would lead to weak joints and surface defects, so the recommended practice is to remove slag between passes with a chipping hammer and wire brush.

In FCAW, slag forms over each weld pass from the flux and must be removed before the next pass to ensure proper fusion to the previous bead and to prevent slag inclusions or porosity in subsequent welds. Chipping away the slag with a hammer and then cleaning the surface with a wire brush leaves a clean, ready surface for the next pass, promoting good fusion and sound weld quality. Using a solvent to dissolve slag isn’t effective here because slag is a solid flux residue, and solvents would introduce contamination and fire hazards. Leaving slag in place or claiming slag removal isn’t required would lead to weak joints and surface defects, so the recommended practice is to remove slag between passes with a chipping hammer and wire brush.

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