Selection of the quantity of the allowance at rough treatment of large – size parts from titanium alloy of BT6 (Russian State Standard GOST 19807-91)T. V. Lomaeva, S. D. Kugultinov and I. I. LivshitsMATEC Web Conf., 329 (2020) 03011DOI: https://doi.org/10.1051/matecconf/202032903011