축열재
세라믹 축열재
축열재 규격 (세라믹 허니컴, Alumina Porcelain)
Size & Dimension Tolerance Unit：mm
| cells | Inner wall | Outer wall | cell width | open cell ratio |
표면적 (m2/m3) |
||
|---|---|---|---|---|---|---|---|
| thickness | tolerance | thickness | tolerance | ||||
| 0.95 | 0.95 | +0.1 , -0.1 | 1.4 | +0.2 , -0.2 | ≈ 4.976 | 69% | 570 |
| 0.8 | 0.8 | +0.1 , -0.1 | 1.4 | +0.2 , -0.2 | ≈3.825 | 67% | 718 |
| 0.63 | 0.63 | ±0.1 | 1.3 | +0.2 , -0.2 | ≈ 3.07 | 67% | 880 |
| 0.6 | 0.6 | ±0.1 | 1.3 | +0.2 , -0.2 | ≈ 2.84 | 66% | 947 |
| 0.52 | 0.52 | ±0.1 | 0.8 | +0.2 , -0.2 | ≈ 2.458 | 67% | 1093 |
Weight requirement Mainly for 150x150x300mm Unit：KG
| Cells Size | alumina porcelain (60-65% Al2O3) |
|---|---|
| 25 | 3.8-4.8 |
| 32 | 4.0-5.0 |
| 40 | 4.2-5.2 |
| 43 | 4.3-5.3 |
| 50 | 4.5-5.5 |
세라믹 축열재 종류별 Spec
| Name | Alumina porcelain (NT 대체용) |
Porous cordierite (MK 대체용) |
Dense Cordierite |
Dense Aluminium |
Mullite (HT 대체용) |
Corundum mullite |
|
|---|---|---|---|---|---|---|---|
| Bulk Density(g/cm3) | 0.2+/-0.2 | 1.8+/-0.2 | 2.3+/-0.2 | 2.5+/-0.2 | 2.3+/-0.2 | 2.4+/-0.2 | |
| Coefficient of heat expansion (x10-6K-1) (20 ~ 800˚C) |
4.7 | 2.5 | 3.4 | 5.3 | 4.3 | 5.7 | |
| Specific Heat (J/Kg.K) (20 ~ 1000˚C) |
900 ~ 1150 | 900 ~ 1150 | 900 ~ 1100 | 1000 ~ 1150 | 1000 ~ 1150 | 1100 ~ 1300 | |
| Thermal Conductivity (W/m.k)(20 ~ 1000˚C) |
1.5 ~ 2.0 | 1.2 ~ 1.8 | 1.5 ~ 2.5 | 1.5 ~ 2.5 | 1.5 ~ 2.0 | 1.5 ~ 2.5 | |
| Thermal shock resistance (˚C/min) By air-cooling |
≥450 | ≥500 | ≥500 | ≥450 | ≥500 | ≥450 | |
| MAX. Working Tem.(˚C) | 1350 | 1320 | 1320 | 1350 | 1450 | 1550 | |
| Water absorption(%) (water dipping) |
13+/-2 | 17+/-3 | ≤1 | ≤1 | 20+/-3 | 20+/-3 | |
| Water absorption(%) (vacuum method) |
≤18 | - | ≤1 | ≤1 | - | - | |
| Compressive strength(MPa) |
A axis | ≥32 | ≥29 | ≥32 | ≥34 | ≥28 | ≥39 |
| B axis | ≥8 | ≥6 | ≥8 | ≥8 | ≥8 | ≥10 | |
| Chemical composition (%) |
AI2O3 | 60 ~ 65 | 33+/-2 | 44+/-2 | 57+/-2 | 67+/-2 | 73+/-2 |
| SiO2 | 25 ~ 30 | 51+/-2 | 45+/-2 | 31+/-2 | 30+/-2 | 22+/-2 | |
| MgO | 5+/-2 | 12+/-2 | 11+/-2 | 4+/-1 | 1+/-0.5 | 1+/-0.5 | |
| Fe2O3+TiO2 | 4+/-1 | 3+/-1 | 2+/-1 | 2+/-1 | |||
| Others | ＜ 5 | ＜ 5 | ＜ 5 | ＜ 5 | ＜ 5 | ＜ 5 | |
| 일반특성 | 범용 | 저온, 열충격용 |
내산용 | 내산용, 고축열 |
고온, 고축열용 |
초고온, 강산, 고축열용 |
|