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http://dx.doi.org/10.14775/ksmpe.2019.18.8.051

A Study on the Selection of Forward Flow Forming Conditions with Inconel718 Tube for Mortar Barrel Manufacturing  

Ko, Se-Kwon (Department of Mechanical Engineering, Changwon National UNIV.)
Cho, Young-Tae (Department of Mechanical Engineering, Changwon National UNIV.)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.18, no.8, 2019 , pp. 51-59 More about this Journal
Abstract
Flow forming is an eco-friendly and high-efficiency plastic deformation process with fewer chips during a process which is specifically used to manufacture seamless tubular products like tire wheels, rocket motor cases etc. On the development of mortar barrel using Inconel718 tube, some flow formed products had dimensional errors on their thickness. In this study, our purpose is to optimize the process conditions with the smallest dimensional error. In order to find an optimum process condition, 2D axisymmetric FEM simulation analyses with Taguchi method were conducted. Geometric variables (attack angle, flatting angle, roller nose radius) and operating parameters (depth of forming, feed rate) are considered as control factors. Forward flow forming with single roller was first analyzed to determine the effective factors using AFDEX software and attack angle of the roller was identified as the most influential factor. Also, the nose radius of the rollers was confirmed as a significant factor in multi-rollers flow forming system. The effect of rollers offset values are also studied and finally, we proposed optimal conditions to improve the accuracy of flow forming process with Inconel718 tube for mortar barrel manufacturing.
Keywords
Flow Forming; Inconel718; Design of Experiment; Finite Element Analysis; Mortar Barrel Manufacturing;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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