Ceramic mould material

Details Ceramic mould material Ceramic mould material

1990-05-03

1992-09-01

Dixon, Jr., William R.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428329, 428325, 428331, 106 383, 106605, S32B 516

Patent

active

051437775

ABSTRACT:
A ceramic material for making ceramic moulds and core for metal casting is described comprising basically granular or bubble refractory material, e.g. alumina or mullite, bound together by hardened ceramic slurry. Moulds for lost wax casting are built-up by dipping a wax pattern in ceramic slurry and then applying granules of bubble alumina in an all over coating. A plurality of such coats may be applied by allowing the slurry to harden between applications. The moulds are more insulating than those using tubular alumina grits, for example, and produce castings with smoother surface finishes.

REFERENCES:
patent: 2553759 (1951-05-01), Geiger et al.
patent: 3923534 (1975-12-01), Cassidy
patent: 3943009 (1976-03-01), Hipp
patent: 3944425 (1976-03-01), Magder
patent: 4186222 (1980-01-01), Sellars et al.
patent: 4432799 (1984-02-01), Salazar
patent: 4664172 (1987-05-01), Takayanagi
Rhinalox.RTM. Bubble Aluming, Technical Bulletin from Hermann C. Starck, Berlin.
Abstract #136657b, Chemical Abstracts, vol. 102, No. 16; Apr. 1985, p. 294, (Mitsubishi Heavy Industries Ltd.).

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