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Machining strategy determination for single- and multi-material wire and arc additive manufactured thin-walled parts [Elektronski vir]Ozaner, Ozan Can ; Klobčar, Damjan ; Sharma, Abhay, strojnikWire 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.Source: Materials [Elektronski vir]. - ISSN 1996-1944 (Vol. 16, iss. 5, Mar. 2023, str. 1-20)Type of material - e-articlePublish date - 2023Language - englishCOBISS.SI-ID - 143970819
Author
Ozaner, Ozan Can |
Klobčar, Damjan |
Sharma, Abhay, strojnik
Topics
bimetali |
specifična rezalna energija |
mehanska obdelava |
oblikovno obločno navarjanje |
aditivne tehnologije |
integriteta površin |
bimetallic |
specific cutting energy |
machinability |
WAAM |
additive manufacturing |
surface integrity
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Ozaner, Ozan Can | |
Klobčar, Damjan | 20441 |
Sharma, Abhay, strojnik |
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