共查询到17条相似文献,搜索用时 140 毫秒
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转炉炉衬膨胀间隙对炉衬与炉壳间接触压力的影响 总被引:3,自引:0,他引:3
转炉炉衬砌筑时设置的膨胀间隙不同会导致炉衬与炉壳之间的接触压力不同,进而导致炉衬的热应力不同。由于结构上的原因,炉衬与炉壳之间的接触压力很难用实测的方法得到。为得到炉衬与炉壳之间的接触压力,应用有限元软件,对炉体工作过程进行模拟、仿真,得到的炉衬与炉壳之间接触压力结果可为进一步分析砌炉是否合理、求解炉衬的热应力莫定必要的基础。 相似文献
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1982年3~6月对二炼钢转炉炉壳外表温度变化进行测定表明,炉壳外表温度的高温区多在耳轴处。它与生产实践中耳轴处炉衬易损坏现象相一致。炉壳温度达到400℃时,如不进行有效喷补,此炉衬就基本不能继续使用。炉壳温度测定对鉴别炉衬蚀损程度有一定参考价值。 相似文献
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宝钢300t转炉炉壳变形测试研究 总被引:10,自引:4,他引:6
针对宝钢炼钢厂三座转炉炉壳发生的严重变形问题,通过现场测试,分析了炉壳变形的状态及规律,指出转炉使用镁碳砖炉衬后炉壳温度升高是造成炉壳变形的主要原因,并提出了解决这一问题的措施和建议。 相似文献
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A slag layer is formed when slag is splashed onto refractory lining in BOF slag splashing process. The melting temperature of the slag layer and the adhesion of the slag layer to the lining refractory have an important effect on slag splashing and BOF lining life. This study investigates the adhesive behaviour of slag with different composition to lining refractories. It is shown that the slag can adhere to MgO particles in MgO‐C bricks well and no reaction is found between the MgO particles and the slag layer, but a gas gap exists at the interface between the slag layer and the MgO‐C matrix and there are iron granules within the slag layer, when the FeO content in the slag is high. The adhesion of the slag layer to the lining refractory can be improved with decreasing FeO content in the slag and lower carbon content in the MgO‐C bricks. BOF refractory lining life can be greatly increased due to better adhesion, high melting temperature, and stronger wear‐resistance of the slag layer. 相似文献
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介绍了转炉镁钙碳大砖炉衬的特点及其相应的砌筑工艺,与普通的镁碳砖相比,使用镁钙碳大砖可以极大地减轻工人的劳动强度,缩短筑炉时间,保证炉役后期炉膛的规则性,有利于提高转炉炉龄,提高炉子作业率,降低生产成本。 相似文献
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《钢铁冶炼》2013,40(5):384-388
AbstractMgO–C brick linings have become standard in basic oxygen furnaces (BOFs) all over the world. Developments in the refractory technology for BOFs over the last few years and their impact on the lifetime and performance of refractory linings are presented. These developments comprise optimised shapes for the lining of BOF and steel fibre reinforced MgO–C bricks. Optimised shapes with double wedges lead to a smooth inner surface of the refractory lining and fewer stresses and refractory consumption. Stainless steel fibre reinforced MgO–C bricks have proven to be the ultimate choice for scrap impacts or other areas with ultra high mechanical loads. They have brought down refractory wear in these particular areas significantly. Moreover, typical lining patterns of different zones in a BOF and the development of the raw material grades (MgO grades and graphite) for refractories as well as the development of lining lifetimes over the last years are discussed. 相似文献
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根据实际转炉建立几何模型。以有限元为手段,分析了在空气自然对流和热幅射条件下,转炉炉衬不断烧损时炉帽部分的温度场分布。以便为生产操作提供依据。 相似文献