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热风炉用耐火材料
| 项目 牌号 |
HRL-155 |
HRL-150 |
HRL-145 |
HRL-140 |
HRL-135 |
HRL-130 |
HRL-127 |
RL-65 |
RL-55 |
HRN-125 |
HRN-120 |
RN-42 |
| AL2O3 % |
≥80 |
≥75 |
≥75 |
≥65 |
|
|
|
≥65 |
≥55 |
≥47 |
≥45 |
≥42 |
| Fe2O3 % |
≤1.3 |
≤1.5 |
≤1.5 |
≤1.5 |
|
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|
|
|
≤1.5 |
≤1.5 |
|
| 耐火度 ℃ |
>1790 |
>1790 |
>1790 |
>1790 |
|
|
|
≥1790 |
≥1790 |
≥1790 |
≥1790 |
≥1750 |
| 显气孔率 % |
≤20 |
≤19 |
≤21 |
≤20 |
|
|
|
≤24 |
≤24 |
≤17 |
≤18 |
≤24 |
| 体积密度 g/cm3 |
≥2.7 |
≥2.7 |
≥2.65 |
≥2.65 |
|
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|
|
≥2.3 |
≥2.2 |
|
| 常温耐压高强度 MPa |
≥80 |
≥80 |
≥70 |
≥70 |
|
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≥50 |
≥45 |
≥50 |
≥45 |
≥30 |
| 荷重软化温度 ℃ |
>1700 |
≥1650 |
≥1600 |
≥1600 |
|
|
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≥1500 |
≥1480 |
≥1500 |
≥1480 |
≥1400 |
|
1550×2 |
1500×2 |
1500×2 |
1500×2 |
|
|
|
1500×2 |
1500×2 |
1400×2 |
1400×2 |
1400×2 |
| ±0.1 |
±0.1 |
±0.2 |
±0.2 |
|
|
|
+0.1
-0.4 |
+0.1
-0.4 |
±0.1 |
±0.2 |
0
-0.4 |
|
1550×50 |
1550×50 |
1450×50 |
1400×50 |
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1250×50 |
1250×50 |
|
| ≤0.3 |
≤0.5 |
≤0.5 |
≤0.5 |
|
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≤0.6 |
≤0.6 |
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