項(xiàng)目 | 焦?fàn)t用粘土磚 | ||||||||
N-1 | N-2a | N-2b | N-3a | N-3b | N-4 | N-5a | N-5 | ||
耐火度 ≥ °c | 1750 | 1730 | 1730 | 1710 | 1710 | 170 | 1690 | 1580 | |
荷重軟化溫度 0.2MPa ≥ | 1400 | 1350 | 1320 | 1300 | |||||
重?zé)€變化率 | 1400°c ×2h | +0.1 -0.4 | +0.1 -0.5 | +0.2 -0.5 | |||||
1350°c×2h | +0.2 -0.5 | +0.2 -0.5 | +0.2 -0.5 | +0.2 -0.5 | |||||
顯氣孔率 % | 22 | 24 | 26 | 24 | 26 | 24 | 26 | 28 | |
耐壓強(qiáng)度,kg/cm2 | 300 | 250 | 200 | 200 | 150 | 200 | 150 | 150 |