Refractory component with locking surface and method of forming the same
View Patent ↗A method of securing a precast refractory shape within a refractory structure, comprising the steps of forming a precast refractory shape by casting a refractory shape to have a plurality of spaced-apart cavities formed in an outer surface thereof; positioning the precast refractory within a refractory structure; and casting a refractory material around the precast refractory shape such that the refractory material covers the outer surface of the precast refractory and fills the cavities.
1. A refractory assembly comprised of:
a precast shape formed of a castable refractory material having an outer surface that includes a plurality of spaced-apart recesses in said outer surface, each spaced-apart recess having a single outer peripheral edge that surrounds each spaced-apart recess,
each spaced-apart recess extends inwardly in a direction perpendicular to said outer surface of said precast shape and each peripheral edge of each spaced-apart recess is displaced from each neighboring peripheral edge of other adjacent spaced-apart recesses in a first direction and a second direction,
a refractory material applied to said outer surface of said precast shape, said refractory material extending into said plurality of spaced-apart recesses to lock said precast shape into said refractory material and to define a tortuous, convoluted path between said outer surface of said precast shape and said refractory material.
2. The refractory assembly as defined in claim 1 , wherein said recesses in said outer surface of said precast shape have like configurations.
3. The refractory assembly as defined in claim 1 , wherein said recesses of said precast shape are spherical in shape.
4. The refractory assembly as defined in claim 1 , wherein said recesses of said precast shape are cylindrical in shape.
5. The refractory assembly as defined in claim 1 , wherein said precast refractory shape is cylindrical and tubular in shape and said recesses are formed along a cylindrical outer surface.
6. The refractory assembly as defined in claim 1 , wherein said outer surface of said precast shape has between 6 recesses and 1,700 recesses per square foot of surface area.
7. The refractory assembly as defined in claim 1 , wherein at least one portion of said tortuous, convoluted path is exposed to a molten metal.
8. The refractory assembly as defined in claim 1 , wherein the spacing in the first direction between adjacent recesses ranges from about 1/32 inch to about 2 inches.
9. The refractory assembly as defined in claim 1 , wherein said first direction is perpendicular to said second direction.
10. The refractory assembly as defined in claim 9 , wherein said first direction is horizontal and said second direction is vertical.
11. The refractory assembly as defined in claim 1 , wherein the spacing in the second direction between adjacent recesses ranges from about 1/32 inch to about 2 inches.