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

Sivarupan, Tharmalingam; Mansori, Mohamed El; Coniglio, N.; Dargusch, Matthew S.

doi:10.1016/j.jmapro.2020.02.043

Cited by 41 publications

(21 citation statements)

References 24 publications

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“…Modelo con el cual nos va a ayudar a moldear la arena, pero es necesario tener en cuenta que la arena de moldeo va a contener aglutinantes y otros parámetros para que nuestro modelo obtenido tenga la solidez adecuada que va a necesitar el elemento fundido (Goto et al, 2022). Estas características del modelo es importante tener en cuenta el tamaño de grano de la arena de moldeo para que la fundición obtenida sea satisfactoria a los elementos y condiciones detalladas en este trabajo (Sivarupan et al, 2020).…”

Section: Figuraunclassified

Optimización del proceso de fundición mediante el proceso de ingeniería inversa y aditiva de un cabezote de un motor de bajo cilindraje

2022

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Introducción: En la industria manufactura de piezas y partes en la industria automotriz se ha visto escasamente desarrollada en nuestro país, es por ello por lo que se ha creado políticas gubernamentales como el acuerdo ministerial N 14 264, el cual busca ampliar la gama de productos de fabricación nacional para la industria automotriz. Objetivos: El objetivo se enfoca en la obtención del modelo y los parámetros del proceso de manufactura para obtener un modelo mediante la ingeniería inversa; para conseguir un prototipo de alta calidad y económicamente viable. Metodología: El proceso de manufactura elegido es la fundición en arena el cual es un proceso que nos permite obtener figuras complejas con alta calidad y coste asequible, para ello es necesario realizar el elemento, el procedimiento aplicado es un proceso de escaneo, que el resultado es una nube de punto, para luego transformar a una malla y obtener un elemento sólido obteniendo las características iniciales del proceso. Resultados: Con las características del proceso de moldeo, mediante iteraciones teniendo un error de 0.39 % para un caudal de 0.17285433 ; Y el canal del bebedero tiene una forma tronco cónica teniendo diámetro superior de bebedero de 16,73 mm, y un diámetro inferior del bebedero de 10.21 mm. Conclusiones: Utilizamos manufactura aditiva para el proceso de fundición fue una vez obtenido los valores antes descritos para que la fundición sea óptima, obteniendo un cálculo económico para que nuestro proceso sea competitivo en relación calidad vs costo.

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Section: Figuraunclassified

Optimización del proceso de fundición mediante el proceso de ingeniería inversa y aditiva de un cabezote de un motor de bajo cilindraje

2022

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“…The authors processed the temperature data obtained from a novel measurement technique to study the decomposition characteristics and thermal properties of 3D-printed sand. Sivarupan et al [21] studied the effects of printing parameters such as recoater speed and print resolution on the properties of the mould samples such as mechanical strength and permeability.…”

Section: Permeability -Theorymentioning

confidence: 99%

Measurement of Darcian Permeability of foundry sand mixtures

Sundaram

Svidró

Diószegi

et al. 2021

International Journal of Cast Metals Research

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Gas permeability of moulds and cores is an important factor to consider in the casting process. In foundries, gas permeability is measured by using instruments which give dimensionless numbers. This approach enables the comparison of values between samples and is often not quantified in units. In this study, a custom-made measurement system is introduced that applies Darcy's law, where pressure gradients for different flow rates are studied. The Darcian permeability in standard cylindrical samples was determined using a method that is familiar with those in earth sciences. Two types, steady-state and unsteady-state approaches were used for the calculations, and the difference in permeability values generated by these two methods is discussed. The results of a silica sand sample with furan resin and a 3D-printed sample that consists of artificial granulous material with phenolic resin were compared.

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“…The aim of this study is to print sand molds that should be rigid enough to resist during casting and sufficiently permeable to facilitate the gases released. For these reasons and based on the laboratory's knowledge of the 3DSP process [5][6][7][31][32][33][34], the printing parameters listed in Table 2 are chosen. A special attention was given to the X resolution (X r , i.e., binder content) and the recoater speed (R s ).…”

Section: D Printing Parametersmentioning

confidence: 99%

“…A special attention was given to the X resolution (X r , i.e., binder content) and the recoater speed (R s ). The X resolution has a direct influence on the mechanical strength of the printed sand specimens [6,[32][33][34][35]. The decrease of the binder content leads to a considerable decrease in strength.…”

Section: D Printing Parametersmentioning

confidence: 99%

Assessment of the effect of 3D printed sand mold thickness on solidification process of AlSi13 casting alloy

Saada

Mansori

2021

Int J Adv Manuf Technol

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The present work addresses the printed sand mold thickness effect on the solidification process of a eutectic aluminum-silicon alloy (AlSi13). Several sand mold thicknesses (varying from 3 to 30 mm) are numerically studied using Quikcast® software. The study shows that the solidification time decreases when the sand thickness of mold increases. It is accelerated by more than 40% when the sand mold thickness increases from 3 to 30 mm. The numerical simulations are coupled with experiments. Indeed, the 3D sand printing process is used to fabricate molds presenting different thicknesses of 5 mm and 30 mm, respectively. In addition, the same printing parameters are applied for producing all sand molds. The comparison between both numerical and experimental results shows the same tendency according to the sand mold thickness. The results indicate that increasing the sand mold thickness from 5 to 30 mm allows to accelerate the solidification by 17% and 18.6%, respectively, in the numerical and experimental results. A finer microstructure is obtained when reducing the solidification time, which enhances the hardness of casting properties.

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

Cited by 41 publications

References 24 publications

Optimización del proceso de fundición mediante el proceso de ingeniería inversa y aditiva de un cabezote de un motor de bajo cilindraje

Optimización del proceso de fundición mediante el proceso de ingeniería inversa y aditiva de un cabezote de un motor de bajo cilindraje

Measurement of Darcian Permeability of foundry sand mixtures

Assessment of the effect of 3D printed sand mold thickness on solidification process of AlSi13 casting alloy

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