Influence of the feed rate value on the distribution of the Q‑factor along the cone of deformation of a CPR mil

V. A. Tomilo, S. V. Pilipenko
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Abstract

To ensure the formation of the necessary microstructure of pipes made of titanium alloys of the Ti‑3Al‑2,5V type, when they are deformed at cold pilgrim rolling mills, it is necessary to provide certain deformation conditions. In particular, the deformation modes are distributed in such a way as to obtain the necessary Q‑factor distribution along the deformation cone. The purpose of this work is to determine the effect of the feed value on the Q‑factor distribution along the deformation zone during forward and reverse movements of the roll mill stand. 1Various methods of carrying out the CPT process were chosen in terms of feeding and rotating the workpiece during the double stroke of the roll mill stand. The research methods are based on known dependencies describing the effect of true deformations in the sections of the working cone on the Q‑factor in these control sections. Calibration using a mandrel with a curved shape of the working surface was chosen for the analysis. 1 Calculations were made for the case of feeding rate before the forward stroke, turning before the reverse, as well as for the case of feeding and turning in both positions of the roll mill stand. The case of mismatch of the feed size is considered, when the feed before the reverse stroke is larger than before the direct one. The methods of leveling the influence of pipe deformation features in the wall calibration zone on the formation of the necessary microstructure of pipes made of Ti‑3Al‑2.5V alloys are proposed.
进给速度值对 Q 因子沿 CPR 密耳变形锥分布的影响
为确保由 Ti-3Al-2.5V 型钛合金制成的管道在冷皮尔格林轧机上变形时形成必要的微观结构,必须提供一定的变形条件。特别是变形模式的分布方式,以便沿变形锥获得必要的 Q 因子分布。这项工作的目的是确定在轧机机架向前和向后运动时,进给量对沿变形区的 Q 因子分布的影响。1 在辊式轧机机架双冲程过程中,选择了各种工件进给和旋转的 CPT 工艺方法。研究方法基于已知的依赖关系,描述了工作锥部分的真实变形对这些控制部分的 Q 因子的影响。在分析中选择了使用工作面形状弯曲的心轴进行校准。1 对正向冲程前的进料速率、反向冲程前的车削以及在辊式轧机机架的两个位置上进料和车削的情况进行了计算。考虑了进料尺寸不匹配的情况,即反向冲程前的进料大于正向冲程前的进料。提出了管壁校准区管材变形特征对 Ti-3Al-2.5V 合金制成的管材形成必要微观结构的影响的平整方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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