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通过钢辊轧制铅件模拟热轧钢件,研究了平辊轧制矩形过程,轧件的宽高比、鼓形比和压下率三个参数对脱方的影响。通过实验建立了平辊轧制矩形件脱方的回归模型。此模型可对平辊轧制矩形件产生的脱方量进行定量计算。 相似文献
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针对生产实践中轧环机进机确定依赖于工艺调试和操作者的经验这个实际问题,对其影响因素进行了分析,以期对环忆制进给速度的设计提供理论依据和计算方法。 相似文献
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根据环件轧制工艺及原理,介绍了对一种石油钻井用特殊小环件的轧制成形工艺进行研究和验证的情况,并分析了该工艺特点及所带来的经济效益。 相似文献
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研究了7175T74铝合金轧制环件的热处理工艺参数对材料组织和性能的影响,通过对比试验确定了7175T74轧制环件变形组织的过烧温度。 相似文献
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While it is acknowledged that roll wear is one of the most challenges to hot strip mills (HSM), very few studies which detail an exact prediction model have been published. The aim of this work is to evaluate and compare two prediction models with measured roll wear. The first prediction model, model 1, developed for a plate mill, was modified to use in strip rolling process. The second prediction model, model 2, is a simplified on‐line model. Data of two hot strip mills were used to investigate the influence of different rolling schedules. The rolls and strip properties were described and the rolling conditions were detailed. The influence of hot rolling factors, such as strip strength, roll grades, rolling temperature, rolling force, reduction and contact length, were also studied. When rolling with different work roll materials and strip grades, the modified prediction model has better prediction accuracy than the simplified model. The accuracy of both models becomes better at higher roll wear > 150 μm. HSS work rolls were confirmed to exhibit improvement of roll wear in comparison with HiCr rolls, the wear resistance was 3 to 4 times better. The influence of strip grade on roll wear was shown to be significant, with higher accuracy of the regression statistics for rolling with similar strip grades and lower regressed accuracy for rolling with mixed strip grades. The roll wear was evaluated at the centre of the barrel. 相似文献
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文章根据现场生产工艺环境,阐述了轧辊使用特征以及轧辊断裂的形成原因,通过与现代轧辊结构的比较和力学分析,进行轧辊结构强化改进,并取得明显的经济和社会效益. 相似文献
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介绍了高速钢辊环在天钢高线厂应用的情况,对高速钢辊环与碳化钨辊环的优缺点进行了对比,提出了高速钢材质辊环、轧辊在轧钢厂使用的可能性。 相似文献
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对常见的二辊式、三辊式、四辊式等张力辊进行了详细的理论分析,讨论并推导出张力辊的基本参数(象辊直径、传动功率等)的计算公式;结合几种典型实际机组进行计算、分析和比较,得出选择张力辊形式以及摩擦系数、张力放大倍数等一般规律,并结合实际工程数据,证明理论和实际基本一致,为类似机组的张力辊设计、调试及操作提供理论和实践依据。 相似文献
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板坯连铸机分节式支承导辊的刚度分析 总被引:1,自引:0,他引:1
分节式导辊是80年代出现的连铸机新结构,具有刚性好和能有效控制铸坯鼓变形的特点,已在连铸机辊列设计中得到推广应用。本文中对串心杆式支承导辊的结构及分节数对铸坯鼓肝变形的影响作了分析,从力学机理上证明了采用分节式导辊的合理性。 相似文献