TY - GEN A1 - Simon, Sylvio A1 - Amirov, Fariz A1 - Yusubov, Nizami A1 - Amirli, Samir ED - Simon, Sylvio T1 - Investigation of hardness on the surface formed during the cutting of HARDOX-500 steel based on the planning of the mathematical model of multi-factor experiments T2 - Zenodo N2 - The article investigates the variation of hardness on the cut surface of HARDOX-500 chromium-nickel steel, depending on the physical-mechanical properties of the processed metal, particularly its hardness. For this purpose, the hardness formed during the cutting of HARDOX-500 steel has been examined using the mathematical modeling of multi-factor experiments. As a result, a full-factorial mathematical regression equation has been derived based on the dependence on waterjet pressure (P), abrasive particle consumption (Q) and longitudinal feed of the nozzle (S_long). The conducted studies revealed that the hardness values on the surface of the cut area can vary significantly during hydro-abrasive cutting of the selected steel workpieces. Specifically, an increase in the longitudinal feed rate of the nozzle, the consumption of abrasive particles, and the pressure of the waterjet leads to an increase in the hardness of the cut surface. Among these factors, the longitudinal feed of the nozzle has the most significant impact on surface hardness. Furthermore, the product of waterjet pressure and longitudinal feed (X_2 X_3), as well as the combined effect of all three input parameters (X_1 X_2 X_3), are influential factors contributing to the increase in hardness. Thus, the study of hardness in hydroabrasive cutting using multi-factor planning is one of the pressing issues in mechanical engineering. KW - HARDOX-500 steel KW - hydroabrasive cutting, input parameter KW - hardness KW - chromium-nickel Y1 - 2025 U6 - https://doi.org/10.5281/zenodo.15095029 ER - TY - GEN A1 - Simon, Sylvio A1 - Yusubov, Nizami A1 - Amirli, Samir ED - Valiyev, Vilayat ED - Namazov, Subhan ED - Yusubov, Nizami ED - Simon, Sylvio T1 - Investigation of surface roughness in hydroabrasive machining depending on changes in abrasive grain size and pressure T2 - Reliability : Theory and Applications N2 - The article investigates the surface roughness generated on HARDOX-500 chromium-nickel steel blanks in hydroabrasive machining as a function of changes in abrasive grain sizes. The study examines the intervals of roughness variation based on various technological, kinematic, structural,and processing environment factors, and identifies optimal roughness values. Experimental results indicate that as the granularity of abrasive grains increases, the surface roughness on the cut surface of the blanks also increases. However, as the pressure of the water-abrasive mixture and the consumption of abrasive grains rise, the height of the resulting surface roughness decreases. KW - Hydroabrasive machining KW - Steel blanks KW - Abrasive grains KW - Surface roughness KW - Regression coefficien KW - Granularity KW - Pressure Y1 - 2025 UR - https://www.gnedenko.net/Journal/2025/SI_072025/RTA_SI072025-029_29+1-B6-01-p239.pdf U6 - https://doi.org/10.24412/1932-2321-2025-783-239-245 SN - 1932-2321 VL - 20 IS - Special Issue 7 (83) SP - 239 EP - 245 PB - Gnedenko Forum CY - Medford MA; USA ER - TY - GEN A1 - Simon, Sylvio A1 - Yusubov, Nizami A1 - Amirli, Samir A1 - Amirov, Fariz T1 - Hardness of surface layers of blanks made of chromium-nickel alloys at hydroabrasive machining T2 - Vestnik Mashinostroeniya T2 - Вестник машиностроения N2 - The hardness of surface layers of blanks made of HARDOX-500 steel is investigated after hydroabrasive machining on a FLOW-Gut machine with cooling in different modes. It is established that the surface hardness after hydroabrasive machining is higher than the hardness after grinding and polishing the surface after cutting T2 - Твердость поверхностных слоев заготовок из хромоникелевых сплавов при гидроабразивной обработке KW - hydroabrasive machining KW - chromium-nickel alloy KW - hardness KW - cutting KW - blank Y1 - 2025 U6 - https://doi.org/10.36652/0042-4633-2025-104-10-873-877 SN - 0042-4633 VL - 104 / 2025 IS - 10 SP - 873 EP - 876 ER -