Orthogonal cutting of Wire and Arc Additive Manufactured parts

This work aimed to evaluate whether the established scientific knowledge for machining homogeneous and isotropic materials remains valid additively manufactured parts. The machinability of thin-walled structures produced through two different variants wire arc additive manufacturing (WAAM) was studied, namely conventional MIG deposition innovative hot forging variant (HF-WAAM). Cutting operations were carried out varying undeformed chip thickness (UCT) cutting speed, using a tool rake angle 25°. A systematic comparison made between existing theoretical principles obtained practical results orthogonal process, where relation material properties (hardness, grain size, yield strength) important outcomes (cutting forces, specific energy, friction, shear stress, formation surface roughness) is addressed. Additionally, high-speed camera records used generated process during experimental tests. indicators shown that, appropriate selection parameters, forces energy consumption can be reduced up 12%, when mechanical improved material. Therefore, it has been confirmed feasibility such following traditional principles, without compromising quality requirements.