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Effect of process parameters on flexure strength and gas permeability of 3D printed sand molds

Article dans une revue avec comité de lecture
Author
SIVARUPAN, Tharmalingam
211915 Mechanics surfaces and materials processing [MSMP]
242496 School of Mechanical and Mining Engineering [Queensland]
EL MANSORI, Mohamed
211915 Mechanics surfaces and materials processing [MSMP]
301080 Texas A&M University [College Station]
CONIGLIO, Nicolas
211915 Mechanics surfaces and materials processing [MSMP]
DARGUSCH, Matthew
242496 School of Mechanical and Mining Engineering [Queensland]

URI
http://hdl.handle.net/10985/18515
DOI
10.1016/j.jmapro.2020.02.043
Date
2020
Journal
Journal of Manufacturing Processes

Abstract

3D printed sand molds for the casting industry play a vital role in manufacturing intricate parts from a computer model. The possibility of producing fairly significant structural castings using a small job-box 3D sand mold printer is another advantage compared to the direct metal 3D printing processes. It is important to identify the relationship between the process parameters and the properties of the sand mold in order to produce a mold with the required strength, permeability and stiffness; to reduce gas emissions during casting and minimize the mass of combustible materials in the mold. Hence, it is possible to create an excellent casting by improving the design of such molds for liquid alloy filling and solidification. The relationship between the printing parameters and the properties of the mold can be a great tool for foundrymen, primarily to optimize the strength and permeability properties of these molds and therefore to provide exact boundary conditions for the solidification simulation prior to a casting trial. This paper reports on a study of a basic outline to quantify the role of the sand mold printing process parameters, particularly the recoater speed and print resolution, on the mold strength and permeability, and their impacts on the anisotropic behavior of the printed sand molds.

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