TY - CHAP AU - Molnár, Viktor TI - Surface roughness and cutting force of hard turned 16MnCr5 steel T2 - Development in Machining Technology: Scientific – Research Reports Vol. 11 PB - Cracow University of Technology CY - Krakkó SN - 9788055344218 PY - 2023 SP - 118 EP - 128 PG - 11 UR - https://m2.mtmt.hu/api/publication/34344251 ID - 34344251 LA - English DB - MTMT ER - TY - CHAP AU - Mohamed, Kaja Bantha Navas Raja AU - Batra, Divya AU - Shivani, Shivani AU - Molnár, Viktor AU - Raj, Sunny TI - Artificial Intelligence in Fashion Design and IPRS T2 - Artificial Intelligence and Knowledge Processing PB - CRC Press CY - Boca Raton, Florida SN - 9781003328414 PY - 2023 SP - 339 EP - 347 PG - 9 DO - 10.1201/9781003328414-29 UR - https://m2.mtmt.hu/api/publication/34166679 ID - 34166679 LA - English DB - MTMT ER - TY - JOUR AU - Zaghal, Jawad AU - Molnár, Viktor AU - Benke, Márton TI - Improving surface integrity by optimizing slide diamond burnishing parameters after hard turning of 42CrMo4 steel JF - INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY J2 - INT J ADV MANUFACT TECHNOL VL - 128 PY - 2023 IS - 5-6 SP - 2087 EP - 2103 PG - 17 SN - 0268-3768 DO - 10.1007/s00170-023-12008-6 UR - https://m2.mtmt.hu/api/publication/34133716 ID - 34133716 AB - Despite turning could be replaced by grinding as a finishing machining process, it is considered not satisfactory for elongating the fatigue life of the component because of the produced tensile residual stresses and irregularities formed at the surface. Therefore, a complimentary operation should be applied after hard turning. Slide diamond burnishing process is a mechanical finishing operation used after hard turning to further decrease the surface roughness, introducing compressive residual stresses, increasing the microhardness, and refining the microstructure of the surface and subsurface layer of the workpiece. The main result is increasing the fatigue life of the rotating components subjected to cyclic loading. In this work, the simultaneous effect of changing the burnishing speed, feed, and force of slide diamond burnishing on surface roughness, residual stresses, and microhardness of 42CrMo4 hard-turned steel was studied. It was found that the effect of one parameter was highly affected by the others. As a result, the optimal burnishing parameters were specified, with which better surface quality was obtained than after grinding. LA - English DB - MTMT ER - TY - JOUR AU - Molnár, Viktor TI - Influence of Cutting Parameters and Tool Geometry on Topography of Hard Turned Surfaces JF - MACHINES J2 - MACHINES VL - 11 PY - 2023 IS - 6 PG - 18 SN - 2075-1702 DO - 10.3390/machines11060665 UR - https://m2.mtmt.hu/api/publication/34027345 ID - 34027345 AB - Three-dimensional topography measurement is a focus area of precision machining because it provides detailed information on the functional behavior of contacting surfaces. The purpose of this study is to analyze how the process parameters and the edge geometry of the cutting insert influence the topographical characteristics of hardened 16MnCr5 steel surfaces and to determine the favorable combinations of technology parameter values based on the analyzed topography parameters (Ssk, Sku, Sz, Sa, Sk, Spk, Svk). A research question is whether the analyzed parameters can be substituted by each other or not. A hard turning experiment was carried out based on a full factorial design of experiments, and the areas of the machined surfaces were scanned and analyzed by analysis of variance, regression analysis (response function), and correlation analysis. It was found that there are strong correlations between the topography parameters that allow the substitution of one with another; the main influencing cutting parameter is the feed rate for both insert types. The contributions of the study are the numerical information with regard to the correlations among the topography parameters, as well as the extent of the influence of cutting parameters. LA - English DB - MTMT ER - TY - GEN AU - Molnár, Viktor TI - Minőségfejlesztési módszerek PY - 2023 PG - 106 UR - https://m2.mtmt.hu/api/publication/34026821 ID - 34026821 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Molnár, Viktor TI - Experimental Investigation of Tribology-Related Topography Parameters of Hard-Turned and Ground 16MnCr5 Surfaces JF - LUBRICANTS J2 - LUBRICANTS VL - 11 PY - 2023 IS - 6 PG - 17 SN - 2075-4442 DO - 10.3390/lubricants11060263 UR - https://m2.mtmt.hu/api/publication/34021819 ID - 34021819 AB - Several surface topography parameters are available for the quantification of tribological properties of machined surfaces. Although these parameters and their influences are widely studied, there are contradictory findings due to the nature of the topography parameters, i.e., the behavior of different materials and cutting tool interactions lead to relatively varying numerical results. A comprehensive study of these interactions can contribute to more exact industrial machining applications. In this study, tribology-related 3D topography parameters of hard-machined (hard-turned and ground) surfaces were analyzed. The machining experiments were carried out based on a detailed design of the experiment; the analyzed material was case-hardened low-carbon content steel, which is widely used for automotive, industrial components such as bearings or gears. From the topography data, response function, correlation, and relative deviation analyses were carried out for the analyzed topography parameters, and tribology maps were created to support the selection of optimal cutting parameter values. LA - English DB - MTMT ER - TY - JOUR AU - Molnár, Viktor TI - ANALYZING SURFACE INTEGRITY ELEMENTS OF HARD TURNED 16MNCR5 STEEL JF - REZANIE I INSTRUMENT V TEHNOLOGICESKIKH SISTEMAKH / CUTTING AND TOOL IN TECHNOLOGICAL SYSTEMS J2 - CUTTING TOOL TECHN SYST VL - 98 PY - 2023 SP - 49 EP - 58 PG - 10 SN - 2078-7405 DO - 10.20998/2078-7405.2023.98.05 UR - https://m2.mtmt.hu/api/publication/33882469 ID - 33882469 AB - Surface integrity plays a determinant role in the functional requirement of precision machined parts. In the automotive industry billions of components are manufactured by using case hardened steels. In this study some surface integrity elements, such as surface roughness or residual stress are analyzed based on systematic machining experimental plan to optimize the applied cutting parameters. Recommendations are made for these parameters based on the measurement data and some widely used functional requirements. LA - English DB - MTMT ER - TY - CHAP AU - Molnár, Viktor AU - Kundrák, János ED - Wojciech, Zębala ED - Maňková, Ildikó TI - Designation of cutting data based on 3D surface roughness and material removal rate T2 - Development in Machining Technology: Scientific – Research Reports vol.10 PB - Cracow University of Technology CY - Krakkó SN - 9788055341330 PY - 2022 SP - 23 EP - 32 PG - 10 UR - https://m2.mtmt.hu/api/publication/33214312 ID - 33214312 LA - English DB - MTMT ER - TY - JOUR AU - Molnár, Viktor TI - Analysis of the Sbi and Svi functional indices in hard machining JF - REZANIE I INSTRUMENT V TEHNOLOGICESKIKH SISTEMAKH / CUTTING AND TOOL IN TECHNOLOGICAL SYSTEMS J2 - CUTTING TOOL TECHN SYST VL - 97 PY - 2022 SP - 113 EP - 123 PG - 11 SN - 2078-7405 DO - 10.20998/2078-7405.2022.97.10 UR - https://m2.mtmt.hu/api/publication/33213152 ID - 33213152 LA - English DB - MTMT ER - TY - BOOK AU - Molnár, Viktor TI - A Quality-Centered Complex Management Model PB - Miskolci Egyetem Gyártástudományi Intézet CY - Miskolc PY - 2022 SP - 101 SN - 9789633582565 UR - https://m2.mtmt.hu/api/publication/33083435 ID - 33083435 LA - English DB - MTMT ER -