In the 1990s at the Ford Windsor Aluminum Plant, Windsor, Ontario Canada, (now Nemak Canada Windsor Aluminum Plant) clogging problems began to develop with the electromagnetic pump used to deliver molten 319 aluminum to the mold in the Cosworth casting process the plant was utilizing. The clogging was due to solid deposits that precipitated from the melt. An investigation initially revealed that the problem could be partially attributed to the precipitation of insoluble aluminum-titanium-silicon (AlTiSi crystals from the melt, which could be corrected through the lowering of Ti levels to 0.10 wt percent). Unfortunately, solving the problem of crystal formation only marginally improved pump performance.
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