Refining the metal

Full Title

Continuous casting of metals, i.e. casting in indefinite lengths (metal drawing, metal extruding B21C) > Supplying or treating molten metal (B22D41/00 takes precedence) > Treating the molten metal > Refining the metal

3 direct subcodes

Child Classifications

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B22D 11/117 by treating with gases (B22D11/118, B22D11/119 take precedence)
B22D 11/118 by circulating the metal under, over or around weirs (B22D11/119 takes precedence)
B22D 11/119 by filtering