Design and fabrication of screw feeding device in additive manufacturing

Abstract

Wire arc additive manufacturing (WAAM) is a new manufacturing technique in which large metal components can be fabricated layer by layer. A method is related apparatus for fabricating a three-dimensional object under a computer-aided design of the object in a layer-by-layer but not point-by-point fashion. Providing a work surface lying substantially parallel feeding a first layer of a first powder to this work surface by screw feeding. Feeding a second layer of a second powder onto the first layer, repeating the feeding, spraying and directing steps to build successive layers along the Z-direction in a layer-wise fashion under the design for forming multiple layers of the object; the main objective of the paper is screw feeding setup and experimenting the microstructure, grain size & hardness of the manufactured composites with different reinforcement ratios.