US 12,343,792 B2
Method for coating steel pan bottoms and steel pan bottoms
Haysler Apolinário Amoroso Lima, Bragança Paulista (BR); Vladnilson Peter De Souza Ramos, Vinhedo (BR); and Hamilton Cesar Guimarães, Campinas (BR)
Assigned to Saint-Gobain do Brasil Produtos Industriais e Para Construção Ltda., Sao Paulo (BR)
Appl. No. 17/777,059
Filed by Saint-Gobain do Brasil Produtos Industriais e Para Construção Ltda., Sao Paulo (BR)
PCT Filed Nov. 10, 2020, PCT No. PCT/BR2020/050464
§ 371(c)(1), (2) Date May 16, 2022,
PCT Pub. No. WO2021/092668, PCT Pub. Date May 20, 2021.
Claims priority of application No. 102019024046-6 (BR), filed on Nov. 14, 2019.
Prior Publication US 2022/0402022 A1, Dec. 22, 2022
Int. Cl. B22D 41/02 (2006.01); A47J 36/02 (2006.01); B22D 41/08 (2006.01); F27D 1/10 (2006.01); F27D 1/16 (2006.01)
CPC B22D 41/023 (2013.01) [A47J 36/02 (2013.01); B22D 41/08 (2013.01); F27D 1/10 (2013.01); F27D 1/16 (2013.01)] 7 Claims
OG exemplary drawing
 
1. 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.