Regeneration Technology of Coated Sand for Selective Laser Sintering

  • Rui Pan
  • Bingrong Zhang
  • Jianxiang Liu
Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)


With the rapid development of 3D printing technology, the requirement of coated sand for Selective Laser Sintering (SLS) is becoming higher in terms of performance and volume. As a molding material with higher performance requirement and much more expensive than common shell molding sand, the emissions of one-time used SLS coated sand could lead to not only environmental pollution but also waste of resources. In this paper, the regeneration processes of coated sand for SLS was studied to discover the best parameters for the regeneration technology. Subsequently, the regenerated sand was coated. The samples for tensile strength and bending strength testing were sintered using HRPS-VI SLS equipment. Afterwards, the original sand for SLS and the regenerated sand was analyzed and compared in terms of sand microstructure, tensile strength, bending strength and cauterant decrease are analyzed and compared between original SLS sand and generated sand. The primary results show that: The morphology of regenerated sand is approximately close to spherical; the tensile strength and bending strength of the samples sintered using SLS coated regenerated sand are almost the same of the original SLS coated sand.


Selective laser sintering Old sand regeneration Tensile strength 



This work was financially supported by the major project of Shandong Science and Technology (No. 2015ZDZX03004) and the project of Natural Science Foundation of Shandong Province (No. ZR2016EEM48). The collaboration of the Shandong Tailai Aluminum Foundry Tech. Co. Ltd. is also acknowledged.


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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.School of Mechanical & Automotive EngineeringQilu University of TechnologyJinanChina
  2. 2.Shandong Tailai Aluminum Foundry Tech. Co. Ltd.LaiwuChina

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