项目 item
单位
unit
指标 index
GL-65
GL-55
GL-48
AI2O3≥
%
65
55
48
Fe2O3≤
%
2.0
耐火度≥
refractoriness
oC
1790
1770
1750
0.2MPa荷重软化开始温度≥
softening temp under 0.2MPaload
oC
1500
1480
1450
重烧线变化
linear change of-heating
1500oC,2h
%
+0.0
-0.2
1450oC,2h
+0.0
-0.2
显气孔率≤
porosity
%
19
18
常温耐压温度≥
pressure resistance at normal temp
MPa
58.8
49.0
透气度
air permeability
次
实验数据在质量证明书中证明
The test data is indicated in the quality certificate