公开(公告)号：US11235384B2

公开(公告)日：2022-02-01

申请号：US16475174

申请日：2017-12-08

申请人： KROSAKIHARIMA CORPORATION ,  NIPPON STEEL CORPORATION

发明人： Shinichi Fukunaga ,  Kouji Kawarada ,  Kohei Tani ,  Masashi Oikawa

IPC分类号： B22D41/24 ,  B22D11/10 ,  B22D41/42

摘要： In a sliding nozzle comprising three plates consisting of an upper plate, an intermediate plate capable of a sliding movement, and a lower plate, it is intended to suppress adhesion and deposition of metal oxides and others on wall surfaces of inner bores of the three plates. The intermediate plate has: a first inclined portion whose surface defines a slidingly closing directional leading-side wall surface of an inner bore thereof and extends obliquely downwardly in a diametrically contracting direction; a second inclined portion whose surface defines an upper part of a slidingly closing directional trailing-side wall surface of the inner bore thereof and extends obliquely downwardly in a diametrically contracting direction, and a third inclined portion whose surface defines a lower part of the slidingly closing directional trailing-side wall surface of the inner bore thereof and extends obliquely downwardly in a diametrically expanding direction.