B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
B22D 11/103 (2006.01) B22D 41/18 (2006.01) B22D 41/28 (2006.01) B22D 41/42 (2006.01) B22D 41/50 (2006.01) B22D 41/58 (2006.01)
Patent
CA 2442857
The invention describes an article for reducing precipitation on a surface adjacent to a stream of molten steel that is flowing from one metallurgical vessel to a second metallurgical vessel or mold. The refractory article comprises a working surface having a perturbation that disrupts the laminar flow in a boundary layer adjacent to the surface. The resultant non-laminar flow reduces precipitation on the surface and provides a convenient point for the injection of inert gas. The method includes disrupting the laminar flow in a boundary layer adjacent to the working surface.
La présente invention concerne un article qui permet de réduire la précipitation sur une surface adjacente à un flux d'acier en fusion s'écoulant d'un récipient métallurgique vers un second récipient métallurgique ou vers un moule. L'article réfractaire comprend une surface de travail comportant une perturbation qui rompt le flux laminaire dans une couche limite adjacente à la surface. Le flux non laminaire obtenu de la sorte réduit la précipitation sur la surface et fournit un point propice à l'injection d'un gaz inerte. Le procédé de l'invention consiste à rompre le flux laminaire dans une couche adjacente à la surface de travail.
Robic
Vesuvius Crucible Company
LandOfFree
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