Method for coating steel pan bottoms and steel pan bottoms
AssigneeSaint-Gobain do Brasil Produtos Industriais e Para Construção Ltda.
InventorsHaysler Apolinário Amoroso Lima, Vladnilson Peter De Souza Ramos, Hamilton Cesar Guimarães
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Abstract
The present invention provides a method for coating the bottom of a steel pan comprising the steps of positioning a mold on the bottom of the steel pan; securing the mold by means of a clamping mechanism; applying refractory material to the bottom of the pan and below the mold; applying a load to the mold; and removing the mold from the refractory material. The present invention is advantageous because it enables an increase in the metallic yield of pans and the reduction of non-metallic inclusions, which are normally dragged by the vortex formed.
Claims7
A steel ladle for liquid metal having a bottom formed by a coating of refractory material (5) and comprising:
- a ladle interior bottom surface;
- an impact region (16) on the interior bottom surface;
- an outlet valve (2) on the interior bottom surface having a valve seat;
- one of a straight or curved profile on the interior bottom surface formed by a mold (3), wherein the profile has ends, the profile extends from a region of greater thickness to a region of lesser thickness, and wherein the outlet valve (2) is positioned in the region of lesser thickness of the refractory bottom;
- and
- at least one chamfer (14,15) formed on the interior bottom surface around the valve seat (2), the at least one chamfer has sides, a top surface, and a bevel between the sides and the top surface, configured for liquid metal to flow over the top surface and around the sides at least one chamfer.
Dependencies are inferred from the claim text.