Mechanics Study on Leveling Process by a Roller during Selective Laser Forming

Abstract:

Generally, pressures resulted from roller during leveling process in selective laser sintering has the effect of densification of powder materials. But extra frictions due to them become the forces which always deteriorate the surface of the part and mark it with several lines trace. Sometimes, the manufacturing can even not continue if these forces accumulate to a large extent to move the whole part. Therefore, the whole forming process will be obliged to stop owing to the displacement of part from above mentioned damage. In this work, the emerging reason and related variation factors of these forces were studied mathematically, the mathematical and physical model of friction force was also built to describe the connections between the leveling process parameters and them. How to control the influence factor of friction to abate their damages to surfaces and promote the forming quality were also discussed based on these models. This will provide a common reference for the application of selective laser sintering technology.

• Periodical: Advanced Materials Research (Volume 670)
• Pages: 101-105
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.670.101
• Online since: March 2013
• Authors: Jin Hui Liu, W.J. Xie, C. Zhao, L. Zhang, Z.L. Lu
• Keywords: Friction Model, Leveling Quality, Selective Laser Sintering

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