RESEARCH OF PROCESS OF DIVISION OF GRADE ROLLING ON THE MEASURED BLANKS BY METHOD OF BREAKING BEND AT STATIC AND SHOCK LOADING
Sergii Karnaukh – Ph.D., Associate Professor of the Department "Fundamentals of Machine Design" of the Donbass State Engineering Academy (st. Akademicheskaya, 72, Kramatorsk, 84313, Ukraine, email: email@example.com, https://orcid.org/0000-0003-2878-4065).
Igramotdin Aliiev – Dr Sc. (Eng.), Full Professor; Donbass State Engineering Academy (st. Akademicheskaya, 72, Kramatorsk, 84313, Ukraine, email: firstname.lastname@example.org, https://orcid.org/0000-0002-4248-8214).
Research of the process of cold breaking of rolling by bending under static and shock loads was conducted to determine the effect of loading speed on the power parameters of the separation process and the quality of the workpieces. Experimental researches are conducted for the three-point cold breaking by bending of templates from steel of different brands at the static and shock loading with the use of original equipment and rigging. Comparison of maximal force of breaking at the static and shock loading was estimated by the coefficient of dynamic, which for the different brands of steel laid down accordingly: ШХ15 - 0,7; 60С2 - 1,6; 45 - 2,0..2,2; 40Х - 1,8..2,1; 20 - 1,6..1,8 at speed of deformation to 18 m с. At the increase of speed of deformation the coefficient of dynamic grows for materials in the plastic and viscidly-resilient state and diminishes for materials in the fragile state. Than higher plasticity of material of templates, the greater size of coefficient of dynamic.
Obviously, that for the exposure of inclination of materials of templates to fragile destruction it is necessary to apply the higher values of speed of loading. With the growth of speed of deformation geometrical exactness of blanks from the different brands of steels, gets better, but not significant. The most high quality was shown by blanks at the division of standards from fragile and viscoelastic steels: ШХ 15, steel of 60С2, steel 45, steel of 40Х. It is identified that greater part of energy of deformation is spent on an origin and viscid growing up of crack, while energy expended on fragile destruction is insignificant. Got results can be used for the improvement of the technologies of process of division of grade rolling on the measured blanks by the method of the cold breaking by a bend.
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131 - Applied Mechanics
132 - Materials Science
133 - Industry engineering
141 - Power engineering, electrical engineering and electromechanics
208 - Agricultural engineering
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Founder of the journal: Vinnytsia National Agrarian University
Editor-in-chief: Tokarchuk Olexiy A.
Ph.D., Assoc., VNAU (Vinnytsia)
Deputy Editor-in-Chief: Veselovska Nataliia R.
Doctor of Technical Sciences, Full Prof., VNAU (Vinnytsia)
Executive Secretary: Polevoda Yuri A.
Ph.D., Assoc., VNAU (Vinnytsia)
Members of the Editorial Board:
Tokarchuk O.A. - Ph.D., Associate Professor, Vinnytsia National Agrarian University
Veselovska N.R. - Doctor of Technical Sciences, Full Professor, Vinnytsia National Agrarian University
Bulgakov V.M. - Doctor of Technical Sciences, Full Professor, Acad. NAAS, National University of Life and Environmental Sciences of Ukraine
Iskovich-Lototsky R.D. - Doctor of Technical Sciences, Full Professor, Vinnytsia National Technical University
Polevoda Yu.A. - Ph.D., Associate Professor, Vinnytsia National Agrarian University
Tsurkan A.V. - Ph.D., Associate Professor, Vinnytsia National Agrarian University
Ivanchuk Y.V. - Ph.D., Associate Professor, Vinnytsia National Technical University
Jordan Todorov Maximov - Doctor of Technical Sciences, Full Professor, Technical University of Gabrovo (Bulgaria)
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It was founded in 1997 under the title "Bulletin of the Vinnitsa State Agricultural Institute." According to the Decree of the Presidium of the Higher Attestation Commission of Ukraine of September 11, 1997, this publication received the status of a professional in which it is allowed to publish the main results of dissertation researches.
In 2001-2014 the journal published under the title “Collection of scientific works of Vinnytsia National Agrarian University. Series: Technical Sciences "(Certificate of State Registration of Mass Media KV No. 16644-5116 PR of 04/30/2010).
Since 2015 journal has title "Engineering, Energy, Transport AIC" (Certificate of State Registration of Mass Media No. 21906-11806 P dated 03/12/2016).