共查询到18条相似文献,搜索用时 62 毫秒
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根据链篦机-回转窑法生产球团矿使用的摆动皮带-筛-溜料板布料系统的具体情况,分析了影响均匀布料的因素,提出了实现均匀面料的途径,经生产实践证明是有效的。 相似文献
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针对鞍钢集团公司大孤山球团厂链篦机存在布料不均、影响篦板使用寿命及球团生产过程等问题,通过稳定合格生球量、调整摆动皮带频率、宽皮带频率、链篦机机速,实现了均匀布料。 相似文献
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链篦机作为“链篦机-回转窑”球团生产系统的关键设备,其运行状况直接影响生产系统的能耗、产品产量及质量.针对国内某厂链篦机球团预热系统,分别建立了各工艺段的热分析和(火用)分析模型,并根据实际生产中的热工测试数据,对其用能状况进行了计算分析.结果表明:该链篦机预热系统的整体热效率为51%~55%,(火用)效率为42%~46%,各工艺段的热效率均低于66%,(火用)效率均低于53%,废气排放能量损失是链篦机系统的主要能量损失.在此基础上,提出了链篦机球团预热系统的优化用能方法,即将抽风干燥段和预热—段排出的热风引入鼓风干燥段,用于球团干燥,可将系统的整体热效率提高到60%,(火用)效率提高到49.6%,从而有效地优化用能过程,提高用能水平,减少能源消耗. 相似文献
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运用ANSYS软件对隔膜泵中的隔膜室盖进行接触有限元分析。建立隔膜腔、隔膜室盖以及联接螺栓的接触有限元模型,详细讨论载荷与边界条件的处理方法,应用ANSYS软件的螺栓预紧功能模拟隔膜腔和隔膜室盖的螺栓联接,对隔膜室盖强度的接触有限元法进行计算,得到隔膜室盖接近实际的应力。 相似文献
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Maycon Athayde Luiz Claudio Von Sperling Cotta Maurício Covcevich Bagatini 《Mineral Processing and Extractive Metallurgy Review》2019,40(1):24-34
Production of iron ore pellets with enough strength to resist the transport and reduction on reactors requires an accurate adjustment of traveling grate furnace process parameters. The firing zone is the most energy intensive step to ensure quality and this study based on Lean Six Sigma methodology to evaluate and optimize the thermal profile through temperature fine-tuning. A pilot scale assessment aid to analyze physical, chemical, metallurgical and microstructure properties of pellets through different temperatures to accurate industrial implementation. The validation of lab-scale trials was concluded by industrial implementation to guarantee the quality, productivity and reduced costs. 相似文献
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为探究轮轨接触磨损与裂纹产生的机制,利用滚动、滑动轮轨接触对变形表面进行金相研究。其次,提出一种可以模拟滚动、滑动接触表面附近的变形过程的多尺度有限元模型。此外,现实中滚动滑动轮沿轨道的蠕滑行为是被广泛认可的。关于这些轮轨接触的实际形变量的从微米到毫米范围内的塑性剪应力可以预测。使用多尺度模型得到的数值结果可以比较金相观察,结果与实际相符合,具有一定的现实指导意义。 相似文献
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Soo-Hyun Joo Jaimyun Jung Myung Sik Chun Chang Ho Moon Sunghak Lee Hyoung Seop Kim 《Metallurgical and Materials Transactions A》2014,45(9):4002-4011
The closure and contact bonding behavior of internal pores in steel slabs during hot rolling was studied using experiments and the finite element method (FEM). Effects of pore size and shape were investigated, and three different cases of pore closure results were observed: no closure, partial closure, and full closure. The FEM results well reproduced various closure events. Bonding strengths of unsuccessfully closed pores, measured by tensile tests, showed critical effects. Also, there was a difference in bonding strengths of several fully closed pores. Fracture surfaces showed that welded regions could be divided into three (not, partially, and perfectly) welded regions. The pressure–time curves obtained from the FEM results indicate that pore surface contact time and deformed surface length are important parameters in pore welding. Pore size, pore shape, time of pressure contact, and deformed surface length should be considered to completely eliminate pores in final products. 相似文献
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用MSC SuperForm软件对三层复合铝箔的轧制过程进行了有限元模型,得到了轧件的包覆板横向厚度分布特征。研究了压下量对横向厚度分布的影响,结果表明,通过改变压下量的大小,可以有效改善轧件的包覆板横向厚度分布不均的现象。 相似文献