Flux is used during casting to________________?
Correct answer: A. Remove the oxides formed on the gold alloy
- A. Remove the oxides formed on the gold alloy
- B. Lower the melting point
- C. Replace casting wax
- D. Speed the burnout process
Explanation
Fluxes react with and dissolve surface oxides formed during heating, allowing molten alloy to flow and join properly. They may also reduce surface tension, but replacing wax or speeding burnout is not their primary role.
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