锻压技术

基于正交试验的冷轧钢管模具设计参数优化

英文标题：Optimization on die design parameters of cold-rolled steel pipe based on orthogonal test

作者：黄小康晁特管延锦

单位：山东大学上海交通大学

分类号：TG332

出版年,卷(期):页码：2020,45(12):95-101

摘要：

以45钢的Φ57 mm×8 mm冷轧钢管为研究对象，利用ABAQUS对钢管二辊周期轧制成形过程进行仿真，基于建立的“3维度、5指标 ”的钢管外形质量评价方法，利用“多变量、多指标”正交试验对基于舍瓦金方法计算得到的轧制模具参数进行优化设计。结果表明：在其他参数恒定的情况下，轧辊辊缝显著影响钢管的平均椭圆度、外径均值偏差与外径方差，进而对钢管的轧制质量产生显著影响，而芯棒定径段的锥度与预精整段的长度对钢管轧制质量无显著影响；最优的模具参数为辊缝为05 mm、芯棒锥度为0024和轧槽无预精整段。在上述的质量评价体系下，优化后钢管的仿真成形质量显著提升，壁厚均值偏差、外径均值偏差与外径方差等3个指标的提升量大于86%，5个指标的平均提升量72%。

For 45 cold-rolled steel pipe with Φ57 mm×8 mm, its two-roll periodic rolling process of steel pipe was simulated by software ABAQUS, and based on the established steel tube appearance quality evaluation method with“three-dimension and five-index”, the rolling die parameters calculated based on the Shevchenko method were optimized by the multivariable and multi-index orthogonal test. The results show that when other parameters are constant, the roller gap has a significant impact on the average ovality, the mean deviation of outer diameter and the variance of outer diameter for steel pipe so as to affect the rolling quality of steel pipe significantly. However, the taper of mandrel in sizing section and the length of pre-finishing section have no significant effect on the rolling quality of steel pipe. Furthermore, the optimal parameters are the roller gap of 05 mm, the taper of mandrel of 0024 and the groove without pre-finishing section. Thus, under the above-mentioned quality evaluation system, the forming quality of the optimized steel pipe is improved greatly, and the mean deviation of wall thickness, the mean deviation of outer diameter and the variance of outer diameter increase by more than 86%, respectively, while the mean increment of all five indexes is 72%.

基金项目：

国家自然科学基金资助项目（51375269）

黄小康(1995-)，男，博士研究生 E-mail：hxiaokang@sjtueducn 通讯作者：管延锦(1969-)，男，博士，教授 E-mail：guan_yanjin@sdueducn

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