公开(公告)号：US20210339312A1

公开(公告)日：2021-11-04

申请号：US17282059

申请日：2019-09-25

Applicant: KROSAKIHARIMA CORPORATION

Inventor： Tatsuya OOUCHI ,  Masaki YAMAMOTO

IPC: B22D41/54 ,  B22D41/50 ,  C04B35/103

Abstract: It is intended to suppress flaming and smoking due to combustion of combustible substances in a certain-shaped joint material, while maintaining hot sealability of the certain-shaped joint material. A certain-shaped joint material for hot installation is obtained by: adding organic additives to a blend in a combined amount of 26 mass % to 50 mass %, with respect to and in addition to 100 mass % of the blend, wherein the blend comprises 50 mass % to 90 mass % of gibbsite type aluminum hydroxide raw material, 1 mass % to 9 mass % of clay, and 9 mass % to 23 mass % of graphite, with the remainder mainly composed of an additional refractory raw material; and subjecting the resulting mixture to kneading, forming and drying.

公开(公告)号：US20190070661A1

公开(公告)日：2019-03-07

申请号：US16077587

申请日：2017-02-07

Applicant: KROSAKIHARIMA CORPORATION

Inventor： Shinichi FUKUNAGA ,  Takahiro KURODA ,  Tatsuya OOUCHI ,  Takuya OKADA ,  Akira OOTSUKA

IPC: B22D41/56 ,  B22D41/50 ,  B22D11/10

Abstract: In the method for replacing an immersion nozzle while pushing out a used immersion nozzle by a new immersion nozzle, in order to minimize leakage of molten steel during the replacement, to enable the use of a shaped joint sealer in a joint interface, and to ensure high sealability, a concave portion is formed on the new immersion nozzle's upper plane so as to include a nozzle hole, and the shaped joint sealer is mounted in this concave portion. The immersion nozzle's upper plane is caused to slide while being pressed to the upper nozzle's lower plane.