Transactions of Materials and Heat Treatment

Title：Optimization on die design parameters of cold-rolled steel pipe based on orthogonal test

Authors： Huang Xiaokang Chao Te Guan Yanjin

Unit： Shandong University Shanghai Jiao Tong University

KeyWords： coldrolled steel pipe orthogonal test tworoll periodic rolling roller gap taper of mandrel

ClassificationCode：TG332

year,vol(issue):pagenumber：2020,45(12):95-101

Abstract：

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%.

Funds：

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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