Actual Problems in Machine Building 2020 Vol. 7 No. 1-2

Actual Problems in Machine Building. Vol. 7. N 1-2. 2020 Innovative Technologies in Mechanical Engineering ____________________________________________________________________ 14 IMPROVING EFFICIENCY OF ABRASIVE TOOL DURING GRINDING WELDED JOINTS Ilinykh A.S. , D.Sc. (Engineering), Associate Professor, e-mail: asi@stu.ru Galay M.S. , Ph.D. (Engineering), Associate Professor, e-mail: galayms@mail.ru Sidorov Je.S. , Ph.D. Senior Teacher, e-mail: sesnsk@mail.ru Siberian Transport University, 191 Dusi Kovalchuk st., Novosibirsk, 630049, Russian Federation Abstract Grinding of rail thermite welded joints leads to loss of cutting capacity of abrasive wheels due to salting. The article presents the results of research cutting ability of grinding wheels of grain size F16, F24, F30 on a bakelite bond which made of electrocorundum. The values of the grinding coefficients and depth of cut are determined for each abrasive wheel. Comparative analysis of the obtained data showed that abrasive wheels of the brand 36 150x73x56 14A 24 O-P-Q B with a grain size of F24 at a cutting depth of 0.18 to 0.20 mm provide high efficiency of the grinding process. Keywords grinding, welding joints, depth of cut, grinding wheels, mechanical treatment, abrasive processing