Abstract
Through using a novel micro-coating metal additive manufacturing (MCMAM) process in this study, the forming characteristics of the multilayer single-pass specimens were investigated. The forming defects including the porosity and the bonding quality between layers were analyzed. Moreover, we also attempted to study the effect of process parameters such as flow rate, deposition velocity, and layer thickness on the forming morphology. Based on the results, the optimization of process parameters was conducted for the fabrication of thin-wall MCMAM. Finally, estimation criteria for the integrity of the interfacial bond were established.
Highlights
Additive manufacturing (AM) has attracted much attention from the public due to its unique advantages, such as unrivalled design freedom and short lead times [1]
Molten metal is transported from the channelA of the technology—micro-coating additive manufacturing (MCMAM)—was proposed
The forming morphologies of the deposited (MCMAM)—was investigated in this paper
Summary
Additive manufacturing (AM) has attracted much attention from the public due to its unique advantages, such as unrivalled design freedom and short lead times [1] It can produce high-performance metal components rapidly using alloy powder or wires as raw material and applying a high-power laser or electron beam as a heat source [2,3,4,5]. Compared with traditional metal AM technologies, MCMAM has shown several advantages At first, it provides a higher material utilization than selective laser melting (SLM) with a high deposition rate. It provides a higher material utilization than selective laser melting (SLM) with a high deposition rate It produces less dust pollution than powder-based equipment when the powder material was recycled. It has a lower equipment cost than SLM and electron beam machining (EBM) [6]
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