AZ ROC C-56 Welding Practice Questions - Arizona ROC C-56 Welding Examination Exam

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When adjusting an oxyacetylene flame, an operator notices an intermediate white feather extending beyond the inner cone. What flame condition does this indicate, and what is its effect on carbon steel?

Carburizing (reducing) flame; it adds carbon to the weld pool and can embrittle steel Neutral flame; it cleans oxide scale from carbon steel Oxidizing flame; it burns out carbon and leaves severe porosity Flashback condition; it forces carbon black into the torch handle

Correct Answer:

Carburizing (reducing) flame; it adds carbon to the weld pool and can embrittle steel

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