Effect of Particle Size Distribution on the Properties of Sand Mold by Three Dimensional Printing

Zhao, Hongbo; Ye, Chun Sheng; Fan, Zi Tian

doi:10.4028/www.scientific.net/amm.190-191.467

Cited by 1 publication

(1 citation statement)

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“…Figure 9 shows the effect of the curing agent content on the sand mold permeability. The sand mold permeability is mainly determined by the size distribution of the sand particles and the compactness of the sand mold (Zhao et al, 2012). The results show that as the content of the curing agent increases, the gas permeability of the sand mold increases.…”

Section: Resultsmentioning

confidence: 98%

Experimental investigation on the performance and mesostructure of multi-material composite 3D-printed sand mold

Guo

Shan

Liu

et al. 2019

RPJ

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Purpose In this paper, the effects of the adhesive and curing agent contents on the tensile strength, bending strength, gas evolution and gas permeability of three-dimensional printed sand molds are studied. A strength model of the three-dimensional printed sand molds is proposed. The multi-material composite sand mold forming test is carried out. In addition, the mesostructure of the sand mold is studied. Design/methodology/approach The performances of three-dimensional printed sand mold such as tensile strength, bending strength, gas evolution and gas permeability are studied using the standard test methods. The mesostructure of the sand mold is studied by digital core technology. Findings A sand mold strength model based on the resin adhesive content, curing agent content and sand mold compactness are obtained. Two types of multi-material composite three-dimensional printed sand molds are proposed. An increase in the curing agent content in the sand mold widens the mesoscopic characteristic size distribution of the sand mold, and large-sized mesostructures appear, resulting in a decrease in the sand mold bearing capacity. Practical implications Process parameters that affect the performance of three-dimensional printed sand mold are revealed. The sand mold bearing curve provides a reference for the ultimate design of three-dimensional printed sand mold. Originality/value The paper deals with experimental work on the performance and mesostructure of multi-material composite three-dimensional printed sand mold with different contents of adhesive and curing agent. That gives a perspective on future designs of sand mold based on these principles.

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Section: Resultsmentioning

confidence: 98%