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We ran a test on our core wash system for three months and the results were clear
Our shop in Toledo had been using a standard water-based wash for our sand cores. We switched one line to a new alcohol-based wash from a supplier called CastPro. After 90 days, the scrap rate on that line dropped from 8% to under 3%. The alcohol wash dries faster and leaves almost no residue, so the metal fills the mold better. Has anyone else made a switch like this and seen a big drop in casting defects?
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troysmith7mo ago
Heard our plant manager talking about testing an alcohol wash on the big greensand line. Said the main benefit was cutting down on veining defects because the coating sets so fast. Those initial results sound a lot like what you're seeing.
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taylorc407mo ago
Saw a write-up in Foundry Monthly about alcohol-based washes. They said the faster dry time is a total game changer for surface finish. Your scrap rate drop lines up with what they were reporting.
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the_kim7mo ago
Our plant switched to an isopropyl-based wash last quarter. The faster drying really does cut down on dust sticking to the wet coating before it cures. It was the single biggest factor in getting our finish rejects under two percent.
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