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Investigation of process parameter effect on anisotropic properties of 3D printed sand molds

Article dans une revue avec comité de lecture
Author
SIVARUPAN, T.
ccEL MANSORI, Mohamed
211915 Mechanics surfaces and materials processing [MSMP]
ccCONIGLIO, Nicolas

URI
http://hdl.handle.net/10985/12515
DOI
10.1007/s00170-017-0861-5
Date
2018
Journal
International Journal of Advanced Manufacturing Technology

Abstract

The development of sand mold three-dimensional printing technologies enables the manufacturing of molds without the use of a physical model. However, the effects of the three-dimensional printing process parameters on the mold permeability and strength are not well known, leading the industries to keep old settings until castings have recurring defects. In the present work, the influence of these parameters was experimentally investigated to understand their effect on the mold strength and permeability. Cylindrical and barshaped test specimens were printed to perform, respectively, permeability and bending strength measurements. Experiments were designed to statistically quantify the individual and combined effect of these process parameters. While the binder quantity only affects the mold strength, increasing the recoater speed leads to both greater permeability and reduced strength due to the reduced sand compaction. Recommendations for optimizing some 3D printer settings are proposed to attain predefined mold properties and minimize the anisotropic behavior of the sand mold in regard to both the orientation and the position in the job box.

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