Analysis of forming forces at SPIF using Taguchi method Mihai-Octavian Popp, Sever-Gabriel Racz, Mihaela Oleksik, Claudia Gîrjob and Cristina Biriş MATEC Web Conf., 368 (2022) 01007 Published online: 19 October 2022 DOI: 10.1051/matecconf/202236801007