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[求助]
求大神帮忙翻译下，谢谢，（材料化学类）……（附图）
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Model calculation shows that the compressive stresses developed in the damage zone (60-80 N/mm2) are comparable with the brick material uni-axial compressive strength (70-100 N/mm2). Therefore, the snorkel lining performance in the early stage of the campaign could be sensitive to the variation in construction (e.g. joint tightness in the snorkel ring, variation of material properties) and preheating. In fact, post mortem examination confirmed that the used snorkel bricks often contained thermal cracks parallel to hot face. A high preheat temperature (i.e. >500°C) would reduce the contact stresses of the snorkel internal bricks. However, a higher preheat temperature would increase the outward expansion of the inner brick lining and resulting in increased tensile stresses on the outer castable and subsequent cracking, allowing metal and slag infiltration. Calculation indicates that the tensile stresses generated on the outer castable are generally higher than the tensile strength of the castable materials, resulting in thermal cracks in the outer castable during preheating (see Fig.7).  3.jpg |
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zhushiyue: 金币+13, 翻译EPI+1, ★★★★★最佳答案, 非常感谢 2014-09-22 10:50:21
zhushiyue: 金币+13, 翻译EPI+1, ★★★★★最佳答案, 非常感谢 2014-09-22 10:50:21
| 模型计算表明，在损伤区产生的压缩应力（60-80牛顿/平方毫米）和砖材料单轴压缩强度（70-100牛顿/平方毫米）相当。因此，连通管内衬的性能在活动初期可能与构造的变化（例如连通管环接合处的松紧带、材料特性的变化）和预热敏感。事实上，事后检测结果证实，连通管所使用的砖常包含平行于热面的热裂缝。高预热温度（即>500℃）会降低通气管内部砖的接触应力。然而，较高的预热温度会增加内部衬砖向外膨胀并导致外浇注料拉伸应力增加和随后的裂缝，从而使金属和炉渣渗透。计算表明，在外侧浇注料所产生的拉伸应力通常比浇注料的拉伸强度更高，从而导致在预热时出现所述外浇注料的热裂纹（见图7）。 |
2楼2014-09-22 10:42:01
