公开(公告)号：US11117187B2

公开(公告)日：2021-09-14

申请号：US16624470

申请日：2018-06-19

Applicant: KROSAKIHARIMA CORPORATION

Inventor： Takafumi Harada ,  Kouichi Tachikawa

IPC: B22D41/58 ,  B22D11/10

Abstract: Disclosed is a casting nozzle intended to suppress or prevent breaking of a nozzle body thereof. The casting nozzle comprises: a nozzle body; a metal casing disposed to surround an upper end of the nozzle body to form a gas pool between an outer peripheral surface of the upper end of the nozzle body and an inner peripheral surface of the metal casing; and a bridging segment provided in at least a part of the gas pool to bridge between the outer peripheral surface of the upper end of the nozzle body and the inner peripheral surface of the metal casing.

公开(公告)号：US11745257B2

公开(公告)日：2023-09-05

申请号：US17431214

申请日：2020-03-04

Applicant: KROSAKIHARIMA CORPORATION

Inventor： Shinichi Fukunaga ,  Kouichi Tachikawa ,  Toshio Kaku

IPC: B22D41/58 ,  B22D41/16

CPC classification number: B22D41/58 ,  B22D41/16

Abstract: Provided is a nozzle or a stopper having a gas blowing function, which is capable of preventing irregular breaking to be triggered by a gas outlet or a gas passage path communicated with the gas outlet, or, even in the event of breaking, preventing expansion of the breaking, and a combination of the nozzle and the stopper. The nozzle comprises: a fitting engagement region refractory material layer composed of a fitting engagement region refractory material; a nozzle body composed of a different refractory material from the fitting engagement region refractory material (main body refractory material); and a gas outlet provided in at least one boundary area between the fitting engagement region refractory material layer and the main body refractory material in a surface of the nozzle contactable with molten steel.