Word: oscillatfhg
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...ordinary method of casting is to pour the metal into ingot molds to harden, strip away the mold, reheat the ingot and roll it into semifinished shapes. Continuous casting eliminates these cumbersome steps. A ladle atop a tower pours white-hot steel into a 2-to-4-ft-deep oscillatfhg copper-lined mold. As the mold bottom is withdrawn, an unbroken billet of barely crusted steel creeps down through cooling water sprays and over rollers to burners, which slice it, still red-hot, into handy lengths. The technique has cut production costs by more than $10 a ton for companies...
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