20.500.12556/RUL-144626 Machining strategy determination for single- and multi-material wire and arc additive manufactured thin-walled parts Wire and arc additive manufacturing (WAAM) technology has recently become attractive due to the fact of its high production capacity and flexible deposition strategy. One of the most prominent drawbacks of WAAM is surface irregularity. Therefore, WAAMed parts cannot be used as built; they require secondary machining operations. However, performing such operations is challenging due to the fact of high waviness. Selecting an appropriate cutting strategy is also challenging, because surface irregularity makes cutting forces unstable. The present research determines the most suitable machining strategy by assessing the specific cutting energy and local machined volume. Up- and down-milling are evaluated by calculating the removed volume and specific cutting energy for creep-resistant steel, stainless steel, and their combination. It is shown that the main factors that affect the machinability of WAAMed parts are the machined volume and specific cutting energy rather than the axial and radial depths of the cut due to the fact of high surface irregularity. Even though the results were unstable, a surface roughness of 0.1 µm was obtained with up-milling. Despite a two-fold difference in the hardness between the two materials in the multi-material deposition, it is found that hardness should not be used as a criterion for as-built surface processing. In addition, the results show no machinability difference between multi- and single-material components for a low machined volume and low surface irregularity. bimetallic specific cutting energy machinability WAAM additive manufacturing surface integrity bimetali specifična rezalna energija mehanska obdelava oblikovno obločno navarjanje aditivne tehnologije integriteta površin true false true Angleški jezik Slovenski jezik Članek v reviji 2023-03-03 14:04:40 2023-03-03 14:04:46 2023-03-04 03:48:48 0000-00-00 00:00:00 2023 0 0 20 str. iss. 5, art. 2055 Vol. 16 Mar. 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.7+621.9 1996-1944 10.3390/ma16052055 143970819 Ozaner,_Klobcar,_Sharma-Machining_strategy_determination_for_single-_and_multi-material_wire_and_arc_additive_manufactured_thin-walled_parts.pdf Ozaner,_Klobcar,_Sharma-Machining_strategy_determination_for_single-_and_multi-material_wire_and_arc_additive_manufactured_thin-walled_parts.pdf 1 4E494B6559D8D2DA79CFF6F7699DEB39 672af095ee58fbbba2dc7befdbb6775223e023c73163f2c22c8c236bdf16fac8 8f45bf0a-b9c4-11ed-a314-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=167062 https://www.mdpi.com/1996-1944/16/5/2055 1 f48c6c8b-b9c3-11ed-a314-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=167061 Fakulteta za strojništvo 0 0 0