Title:
アルミナ－マグネシア質キャスタブル耐火物の耐剥離性の評価方法
Document Type and Number:
Japanese Patent JP7187954
Kind Code:
B2
Abstract:
To provide a method for evaluating peeling resistance whether or not an alumina-magnesia quality castable refractory is peeled and worn.SOLUTION: A method for evaluating peeling resistance of an alumina-magnesia quality castable refractory in which the refractory has a residual linear change ratio after having been fired at 1,400°C or higher and 1,600°C or lower for 3 or more hours of 0% or more, includes: a step of heat-treating the castable refractory at a temperature T1 equal to or higher than a temperature at which a liquid phase of the refractory is generated for 3 or more hours; a step of measuring a coefficient of linear thermal expansion of the refractory while raising the refractory after heat treatment to a temperature T2 higher than the temperature T1 from a room temperature; a step of measuring a coefficient of linear thermal expansion of the refractory while cooling the refractory to the room temperature from the temperature T2; a step of calculating a differential value between the coefficient of linear thermal expansion in the temperature-raising step and the coefficient of linear thermal expansion in the cooling step at a temperature T3 equal to or lower than the T1; and a step of determining peeling resistance from the differential value.SELECTED DRAWING: Figure 1
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Inventors:
Go Matsui
Application Number:
JP2018189439A
Publication Date:
December 13, 2022
Filing Date:
October 04, 2018
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
C04B35/66; B22D41/02; C04B35/101; G01N25/16
Domestic Patent References:
| JP11100280A | ||||
| JP2012006053A | ||||
| JP9030859A |
Attorney, Agent or Firm:
Aoki Atsushi
Shinji Mihashi
Ritsuo Fukuchi
Saito Manabu
Akio Honda
Shinji Mihashi
Ritsuo Fukuchi
Saito Manabu
Akio Honda