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1. (WO2017150333) REFRACTORY FOR CASTING, AND PLATE FOR SLIDING NOZZLE DEVICE

Pub. No.:    WO/2017/150333    International Application No.:    PCT/JP2017/006832
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Fri Feb 24 00:59:59 CET 2017
IPC: B22D 41/32
B22D 11/10
C04B 35/043
C21C 7/00
F27D 3/14
Applicants: KROSAKIHARIMA CORPORATION
黒崎播磨株式会社
Inventors: MAKINO, Taro
牧野 太郎
AKAMINE, Keiichiro
赤峰 経一郎
ITO, Kazuo
伊藤 和男
Title: REFRACTORY FOR CASTING, AND PLATE FOR SLIDING NOZZLE DEVICE
Abstract:
In order to further improve the corrosion resistance and thermal shock resistance of a magnesia refractory for casting, the present invention provides a refractory for casting containing 40% by mass to 85% by mass of MgO and 10% by mass to 50% by mass of Al4O4C in the state thereof after heat treatment in a non-oxidative atmosphere at 500°C, wherein the coefficient of thermal expansion thereof at 1000°C is 0.9% or less, and the difference between the average coefficient of thermal expansion thereof from 1100°C to 1500°C and the average coefficient of thermal expansion thereof from room temperature to 1100°C is 6×10-6/°C or less.