Technology and simulation of cold isostatic pressing of selective laser sintered parts

DU Yanying; SHI Yusheng; WEI Qingsong

doi:10.7510/jgjs.issn.1001-3806.2014.01.021

In order to improve the relative density of parts made of selective laser sintering (SLS), cold isostatic pressing (CIP) was carried out for densification. Numerical simulations of CIP SLS parts were made based on Drucker-Prager-cap model. Theoretical analysis and experimental verification were conducted based on simulation results. The results show the relative density of SLS parts was enhanced obviously. The contraction of the parts was uniform. The errors between experimental results and wanted dimensions of main dimensions were within 0.41mm, which indicated the simulation results accorded with the experiment results. The post-process of CIP SLS parts develops the application field of powder laser rapid prototype that lays the technical and experimental foundation for engineering practice.

Technology and simulation of cold isostatic pressing of selective laser sintered parts

1. Key Laboratory of Port Cargo Handling Technology Ministry of Communications, School of Logistics Engineering, Wuhan University of Technology, Wuhan 430063, China;

2. State Key Laboratory of Material Forming and Die and Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China

Received Date: 2013-03-15

Accepted Date: 2013-04-24

Available Online: 2014-01-25

Abstract: In order to improve the relative density of parts made of selective laser sintering (SLS), cold isostatic pressing (CIP) was carried out for densification. Numerical simulations of CIP SLS parts were made based on Drucker-Prager-cap model. Theoretical analysis and experimental verification were conducted based on simulation results. The results show the relative density of SLS parts was enhanced obviously. The contraction of the parts was uniform. The errors between experimental results and wanted dimensions of main dimensions were within 0.41mm, which indicated the simulation results accorded with the experiment results. The post-process of CIP SLS parts develops the application field of powder laser rapid prototype that lays the technical and experimental foundation for engineering practice.

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Reference (15)

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Technology and simulation of cold isostatic pressing of selective laser sintered parts

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