NFLUENCE OF POST-MAKING ON THE QUALITY OF PARTS IN ADDITIVE MANUFACTURING
DOI:
https://doi.org/10.35546/kntu2078-4481.2025.2.1.7Keywords:
additive manufacturing, 3D printing, temperature-technological conditions, product qualityAbstract
The article provides an analytical review of modern methods of surface treatment of various materials obtained by 3D printing. The influence of mechanical, abrasive, laser and chemical types of post-processing of parts in additive manufacturing on the influence of surface microgeometry, residual stresses, and dimensional accuracy is considered separately. The classification of printing defects in Fused Deposition Modeling (FDM) technology and selective laser sintering SLM for metals and alloys in modern additive manufacturing is presented, and the latest research in this area is analyzed.Influential technological factors such as laser power, scanning speed, and processing time are established, and a comparison of laser and electrochemical polishing methods is made. According to modern sources of scientific and technical information, the influence of post-processing regime and technological parameters on ensuring surface roughness in additive manufacturing is determined. In particular, the magnetorheological method of surface finishing after surfacing, mechanical cutting after FDM printing depending on the orientation angle of the print head nozzle to the part in relation to the final surface roughness according to the criterion of the arithmetic mean parameter Ra.The process of reducing the roughness parameter after laser polishing in a two-factor dependence on the power and laser feed rate during post-processing of metal parts is considered. A comparison of media for chemical and electrochemical finishing methods, the influence of their composition, concentration, temperature, and contact time on the microrelief of the workpiece surface is made, which is confirmed by the data of modern scientific research. An initial classification of combined methods as a promising direction in post-processing of additive technologies is developed with the definition of their technological factors and operating conditions, the advantages and disadvantages are substantiated. A general analysis of the technological parameters of post-processing in additive technologies and their feasibility for polymeric and separately metallic materials is made, and technical recommendations for surface quality control by post-processing methods are formulated.
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