Abstract
Additive manufacturing (AM) technology has rapidly evolved with research advances related to AM processes, materials, and designs. The advantages of AM over conventional techniques include an augmented capability to produce parts with complex geometries, operational flexibility, and reduced production time. However, AM processes also face critical issues, such as poor surface quality and inadequate mechanical properties. Therefore, several post-processing technologies are applied to improve the surface quality of the additively manufactured parts. This work aims to document post-processing technologies and their applications concerning different AM processes. Various types of post-process treatments are reviewed and their integrations with AM process are discussed.
Highlights
Post-Processing Technologies in Additive manufacturing (AM) technology, known as 3D printing technology, freeform fabrication, or rapid prototyping, constructs 3D parts by joining materials layerby-layer based on digital models [1,2,3,4,5,6,7,8,9]
The results presented that the ultrasonic laser polishing can effectively remove the partially melted structures, the surface roughness decreased from 5.02 μm to
The results showed that the combination of magnetic abrasive finishing (MAF) and grinding process (GP) can reduce the surface roughness and improve the surface quality of AlSi10Mg parts
Summary
Post-Processing Technologies in Additive manufacturing (AM) technology, known as 3D printing technology, freeform fabrication, or rapid prototyping, constructs 3D parts by joining materials layerby-layer based on digital models [1,2,3,4,5,6,7,8,9]. Internal defects such as balling, porosity, cracks, powder agglomeration, and thermal stress would appear between different printing layers These defects have serious influences on the internal microstructure and mechanics of the final parts [49,50,51,52,53,54,55]. After the parts being manufactured, post-processing operations are usually required to improve the mechanical properties and the surface quality, achieving their intended utilization [56,57,58,59,60,61,62]. There have many post-processing technologies, such as the thermal post-processing method to release thermally-induced residual stress and laser peening to reduce micro-defects and improve surface quality.
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