Research Article
Thermal Decomposition Behaviour of Foundry Sand for Cast Steel in Nitrogen and Air Atmospheres
Table 3
Volatile release characteristics of foundry sand.
| | Atmosphere | (°C/min) | Tstv (wt. % (min)) | mloss (wt. %) | Ts (°C) | Tmax (°C) | (dw/dτ)mean (wt. % (min)) | (dw/dτ)mean (wt. % (min)) | △1/2 (°C) | (wt. %2 (min2)/°C3) |
| | Nitrogen | 20 | 2.37 × 10−2 | 0.83 | 153 | 471 | 4.22 × 10−2 | 1.56 × 10−2 | 463 | 1.97 × 10−11 | | Nitrogen | 30 | 2.80 × 10−2 | 0.98 | 115 | 473 | 6.58 × 10−2 | 2.76 × 10−2 | 483 | 6.91 × 10−11 | | Nitrogen | 40 | 3.89 × 10−2 | 1.36 | 126 | 492 | 1.20 × 10−1 | 5.11 × 10−2 | 468 | 2.11 × 10−10 | | Air | 20 | 5.92 × 10−2 | 2.07 | 310 | 460 | 1.89 × 10−1 | 3.89 × 10−2 | 172 | 3.00 × 10−10 |
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