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US 10,882,107 B2Granted
Impact pad
AssigneeVesuvius USA Corporation
InventorsJohn Morris, John Rogler
Life of this patent
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Abstract
An impact pad for metallurgical processes is formed from refractory material, and contains a base having an impact surface facing upwardly against a stream of molten metal entering a vessel containing the impact pad. A wall having a plurality of adjacent wall portions extends upwardly from the base. The impact surface contains at least one nonhorizontal facet extending inwardly from a wall portion; all lines in the facet extending perpendicularly to the wall portion have an inclination or declination with respect to the horizontal plane.
Claims8
An impact pad comprising refractory material, the impact pad comprising:
- (a) a base having a shape selected from the group consisting of rectangular and trapezoid, having a larger horizontal dimension, and having an impact surface facing upwardly;
- (b) a wall extending upwardly from the base around the entire periphery of the base, wherein the wall comprises a plurality of adjacent wall portions meeting at a nonzero angle;
- wherein the wall comprises two larger opposing longitudinal wall portions and two smaller opposing latitudinal wall portions;
- wherein the impact surface comprises a longitudinal center line equidistant from the two larger opposing wall portions;
- wherein the longitudinal center line declines from a first opposing latitudinal wall portion to a second opposing latitudinal wall portion at an impact surface lower end;
- wherein the impact surface contains a facet extending from a wall portion towards the longitudinal center line;
- wherein the surface facet is in contact with at least two wall portions, and is inclining or declining with respect to at least two of the wall portions with which it is in contact;
- wherein the surface facet comprises an end proximal to a first wall portion and an end distal to the first wall portion, and the end distal to the first wall portion terminates in a line parallel to the longitudinal center line;
- wherein angles of declination or inclination, with respect to the horizontal plane, of surface facets as measured from the wall towards the longitudinal center line of the impact pad have a value from and including 1 degree to and including 15 degrees;
- wherein the angle of declination or inclination, with respect to the horizontal plane, of the longitudinal center line has a value from and including 1 degree to and including 15 degrees;
- wherein the base is symmetrically configured with respect to the longitudinal center line;
- wherein two impact surface facets extend towards each other and downwardly from opposing longitudinal wall portions;
- wherein the two impact surface facets meet at the longitudinal center line;
- and;
- wherein the wall of the impact pad is provided with an overhang.
12 more elements
Dependencies are inferred from the claim text.