TY JOUR TI SPECIFIC FEATURES OF THERMAL PROCESSES IN DOUBLE-SIDED FACE GRINDING MACHINES KW face grinding machines KW thermal deformations KW excess temperatures KW thermal displacements JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Nikitina, I.P. AU Polyakov, A.N. PY 2021 IS 6 PB Belgorod State Technological University named after V.G. Shukhov