镍基高温合金定向凝固用陶瓷型壳粘砂反应
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石振威, 郑伟, 卢玉章, 张功, 申健
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Sand-burning Reaction of Ceramic Shell for Directional Solidification of Nickel-based Superalloy
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SHI Zhenwei, ZHENG Wei, LU Yuzhang, ZHANG Gong, SHEN Jian
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表5 实验计划和实验结果
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Table 5 Experiment scheme and results
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| No. | A /kg | B /kg | C /kg | D /℃ | Results |
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| Sand-burning proportion/% | Surface roughness Ra/μm | Porosity/% |
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| 1 | W7 | 5.0 | 5.0 | 0.2 | 900 | 0.78 | 2.21 | 8.16 | | 2 | 3.3 | 6.6 | 0.4 | 1000 | 2.51 | 2.06 | 7.92 | | 3 | 2.5 | 7.5 | 0.6 | 1100 | 3.17 | 2.64 | 4.21 | | 4 | W14 | 5.0 | 5.0 | 0.4 | 1100 | 6.15 | 2.79 | 17.73 | | 5 | 3.3 | 6.6 | 0.6 | 900 | 4.74 | 2.05 | 16.08 | | 6 | 2.5 | 7.5 | 0.2 | 1000 | 2.71 | 2.90 | 14.26 | | 7 | - | 10.0 | 0.6 | 1000 | 4.36 | 3.27 | 17.31 | | 8 | 10.0 | 0.2 | 1100 | 3.10 | 1.93 | 23.74 | | 9 | 10.0 | 0.4 | 900 | 6.66 | 2.81 | 26.22 |
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