Coated molten metal filters

Details Coated molten metal filters Coated molten metal filters

B - Operations, Transporting

22

D

39/104, 53/359,

B22D 43/00 (2006.01) F27D 99/00 (2010.01) B01D 39/20 (2006.01) B22D 1/00 (2006.01) C22B 9/02 (2006.01)

Patent

CA 2031136

ABSTRACT A molten metal filter is disclosed having a carbon or carbon-thermite coating that reduces ther- mal shock to the filter, and protects the filter from corrosion from the metal or components and impurities in the metal, and prevents metal from freezing in the filter. A molten metal assembly suitable for casting molten metal is disclosed which comprises a filter for molten metal and means for molten metal flow passage leading through the filter. The means have surfaces defining a molten metal path. The filter has a coating of carbon or carbon in intimate contact with a thermite material on the surfaces of the filter. A process is disclosed for filtering molten metal which comprises passing molten metal through the above described coated filter.

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