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Open AccessArticle

A Study on the Dimension Accuracy on the Inner Structure of the 3D Printed Parts Caused by the Scanning Strategy

by 1,2,*, 1 and 1,2
1
School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China
2
Additive Manufacturing Products Supervision and Inspection Center of Jiangsu Province, Wuxi Institution of Supervision & Testing on Product Quality, Wuxi 214073, China
*
Author to whom correspondence should be addressed.
Materials 2019, 12(8), 1333; https://doi.org/10.3390/ma12081333
Received: 11 March 2019 / Revised: 22 April 2019 / Accepted: 22 April 2019 / Published: 24 April 2019
Selective laser melting (SLM) has been used in many fields recently, especially in the aerospace field. Many studies have been done on mechanical properties of the printed parts, but the dimension accuracy of the inner structure received little attention during these years. In this work, the dimension accuracy of the inner structure was measured and compared using different scanning strategies. Compared with the measured data, a new scanning strategy was used and finds that the dimension accuracy was better than the previous one that used a two-scanning strategy. To explain this phenomenon, finite element analysis (FEA) was used to show the temperature distribution after a 0.1 s cooling using two different scanning strategies, which caused the dimensional deviation in printing. View Full-Text
Keywords: selective laser melting (SLM); dimension accuracy; inner structure; scanning strategy; Ti6Al4V selective laser melting (SLM); dimension accuracy; inner structure; scanning strategy; Ti6Al4V
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MDPI and ACS Style

Han, J.; Wu, M.; Ge, Y. A Study on the Dimension Accuracy on the Inner Structure of the 3D Printed Parts Caused by the Scanning Strategy. Materials 2019, 12, 1333.

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