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research-article

An Integrated Dual Ultrasonic Selective Powder Dispensing Platform for 3D Printing of Multiple Material Metal/Glass Objects in Selective Laser Melting

[+] Author and Article Information
Xiaoji Zhang

Laser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester, Manchester M13 9PL, UK
xiaoji.zhang@postgrad.manchester.ac.uk

Chao Wei

Laser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester, Manchester M13 9PL, UK
chao.wei@postgrad.manchester.ac.uk

Yuan-hui Chueh

Laser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester, Manchester M13 9PL, UK
yuan-hui.chueh@postgrad.manchester.ac.uk

Lin Li

Laser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester, Manchester M13 9PL, UK
lin.li@manchester.ac.uk

1Corresponding author.

ASME doi:10.1115/1.4041427 History: Received July 03, 2018; Revised September 03, 2018

Abstract

In this paper we present a new approach of combining point by point selective powder delivery with powder bed fusion for multiple material (metal/glass) components printing. Stable flowrates of both 316L steel and soda-lime glass powders were achieved and dispensed selectively and separately. The effects of stand-off distance, feeding nozzle geometry and vibrational power on the powder flow were investigated. The results showed that the ratio between the stand-off distance and the powder size (h/d) should be lower than 3 for accurate selective material deposition. On the contrast, the ratio can be more than 3 for more efficient powder deposition and to avoid powder feeding nozzle collisional damage. Different laser processing parameters were developed for processing the metal and glass due to material property differences. The interfaces between 316L and soda-lime glass were examined. A number of 3D objects consisting of metal and glass were printed using this method. Keywords: multi-material; 316L; 3D printing, SLM, additive manufacturing, glass; powder feeding, ultrasonic;

Copyright (c) 2018 by ASME
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