TY JOUR TI TECHNICAL AND ECONOMIC EFFICIENCY ASSESSMENT OF METAL ELEMENTS ABRASIVE-JET PROCESSING IN RAILROAD CAR BODIES KW abrasive-jet processing KW abrasive KW roughness KW surface quality KW technical and economic effectiveness JO Bulletin of Bryansk state technical university AU Kulikov, M.Y. AU Kul'kov, A.A. PY 2019 IS 2019 PB Bryansk State Technical University