difusión de humedad en mezclas de moldeo para machos de fundición

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ID: 177287
2002
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Abstract
The moisture diffusion in molding mixtures employing in foundry processes is described. Using gravimetric techniques the humectation kinetic behavior of different types of molding mixtures for foundry cores were registered. The mixture higroscopicity is compared using the porcentual increase in wet mass. The kinetic study is ending with the calculations effective coefficients of diffusion of the atmospheric water in the mixtures to different bleakness. For this goal the fitting through non lineal methods was used. The influences of the agglutinative and draw materials in the hygroscope properties of these were analyzed too.<br><br>Se describe la difusión de humedad en mezclas de moldeo utilizadas en los procesos de fundición. Empleando técnicas gravimétricas se registra el comportamiento de la cinética de humectación de diferentes tipos de mezclas de moldeo para machos de fundición. La higroscopicidad de las mezclas es comparada usando el criterio del incremento porcentual en masa húmeda. El estudio cinético se concluye con los cálculos de los coeficientes efectivos de difusión del agua atmosférica en las mezclas a distintas intemperies. Para este propósito se emplean métodos de ajuste no lineal. También se analiza la influencia de los materiales aglutinantes y desarenantes en las propiedades higroscópicas de estas mezclas.
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Authors ;Hernández-Ruiz, J. E.;Valencia- Morales, E.;Villar-Cociña, E.;Vega- Leiva, J.
Journal medicinal chemistry (shariqah (united arab emirates))
Year 2002
DOI
DOI not found
URL
http://ceramicayvidrio.revistas.csic.es/index.php/ceramicayvidrio/article/view/685/711
Keywords
moisture glass Ceramics

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