Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 13, 2017 - November 17, 2017
This study sought to conduct additive manufacturing on a cylindrical object using a wire and arc-based system. As thermal contraction occurs during the cooling process of weld metal, cylindrical objects deform when the additive layers are fabricated along the longitudinal direction on the long thin cylinder side surface. We first focused on the order of four additive layers at 90-degree intervals on the cylindrical surface, investigating the effect of two kinds of layering order on the deformation. The first was a clockwise pattern that layered the second bead to the 90-degree position of the preceding one in sequence. The second was a criss-cross pattern that layered the second and fourth beads in opposition to the preceding ones. We then considered the effects of cylinder surface temperature at the opposite side of the added layer. We found that the final deformation was smaller with the criss-cross pattern than with the clockwise layering pattern. Moreover, deformation decreased as cylinder surface temperature increased.
