Extrusion die manufacture

Details Extrusion die manufacture Extrusion die manufacture

B - Operations, Transporting

23

P

25/25, 117/81

B23P 15/24 (2006.01) B28B 3/20 (2006.01) B28B 3/26 (2006.01) B28B 7/34 (2006.01) C23C 14/08 (2006.01)

Patent

CA 1251921

Abstract of the Disclosure This invention relates to a method for forming a die for use in fabricating a ceramic honeycomb monolith structure having passages separated by walls having predetermined thicknesses. The method involves forming slots in the die and then applying a uniform coating of iron boride, chromium carbide, aluminum oxide, titanium carbide, titanium nitride or titanium carbonitride to the slot-defining surfaces of the die through CVD, the coating ranging in thickness up to 30 microns and being controlled in thickness to ? 1 micron.

470780

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