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Aluminium Fluxes in HPDC: Selection, Application & Shop-Floor Control Move Beyond Colour-Based Flux Selection. Learn How to Scientifically Select, Apply and Control Aluminium Fluxes in HPDC.   In many HPDC plants, aluminium flux is still treated as a routine consumable—often selected based on colour, number, supplier name, or past practice. Operators may ask for “white flux,” “pink flux,” “green flux,” “black flux,” “Flux 11,” or “Flux 88.” But the more important questions are often overlooked: What is the actual melt problem? Which type of flux is required? How much should be used? When should it be applied? How should the result be verified? This lack of scientific control can contribute to problems such as high dross generation, poor metal recovery, oxide inclusions, black spots, leakage rejection, melt cleanliness issues, excessive flux residue, fumes, and incon...;

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