Refractory coating for silica mesh fabric
OwnerJay R. Hitchingsinventor
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Abstract
Coated silica mesh fabrics for use in metal casting operations are disclosed. The refractory coating comprises a mixture of colloidal silica binder and refractory particles such as zirconia flour. A slurry comprising the colloidal silica and refractory particles is applied to the silica mesh fabric and allowed to dry. The coated silica mesh fabric may be used in metal casting operations at relatively high molten metal temperatures above 3,000° F.
Claims16
A molten metal filter comprising silica cloth coated with a refractory coating including refractory particles and a colloidal silica binder, and phenolic resin between the silica cloth and the refractory coating.
A method of making a molten metal filter comprising:
- providing a silica cloth filter material coated with phenolic resin;
- and
- coating at least a portion of the silica cloth filter material and phenolic resin with a refractory coating comprising refractory particles and a colloidal silica binder.
Dependencies are inferred from the claim text.