Method of making mold used in pressure slip casting

Details Method of making mold used in pressure slip casting Method of making mold used in pressure slip casting

B - Operations, Transporting

28

B

25/61

B28B 7/34 (2006.01) B28B 1/26 (2006.01) B29C 33/40 (2006.01)

Patent

CA 1304921

ABSTRACT OF THE DISCLOSURE Herein disclosed is a method of making a porous mold used in pressure casting for forming ceramic articles, which comprises the steps of: removably attaching a plurality of apertured holding members in an array at a desired interval to the inner face of an upper case made of a rigid material; threading a flexible line into the apertures of the holding members in each row to hold it at a predetermined spacing from the inner face of the upper case, at least one of the two ends of the flexible line being extended to the outside of the upper case; casting slurry into a mold cavity which is defined between the upper case and a lower basic case jointed to the former case to form a porous mold; removing the upper case from the porous mold after the slurry has cured, while leaving the holding members together with the flexible lines in the porous mold; and extracting the flexible lines from the porous mold to form channels in the porous mold.

543821

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