Evaluation of Forming Factors for Titanium Gr. 2 Alloy Sheets with Multistage SPIF Process

Abstract

AbstractIn the vast prospects for automation, incremental sheet forming (ISF) is a reliable sector on which the industry may focus in the future. Due to spring back, poor surface finish, and production time, ISF has yet to apply in broad prospects in mainstream high-value manufacturing sectors. ISF performance is affected by process factors such as vertical step depth, feed rate, spindle speed, forming angle, tool path, intermetallic friction, and bending forces. One of the variants of ISF processes is Single Point Incremental Forming (SPIF). The formability of the SPIF process increases by incorporating certain intermediary phases known as Multistage Incremental Sheet Forming (MSPIF). The strain hardening effect that emerged in the distorted sheet alters its deformability. The integration of intermediate results into some new process parameters to address in this work includes the number of stages, angle interval between the stages, and tool diameter. The present research focuses on the influence of process parameters on section thickness, equivalent plastic strain, and spring back. A simulation study of various process parameters of multistage forming and their effects on multistage incremental forming performance were evaluated.