A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Composición de escayola para moldes refractarios
Composición mineral para la preparación de moldes de fundición, que comprende (a) de 20 a 90% en peso de escayola, (b) de 10 a 75% en peso de un componente mineral a base de sílice y/o alúmina, y (c) de 0,5 a 4,8%, preferiblemente entre 1,5 y 4,5% en peso, y en particular entre 2 y 4,5% en peso de un polvo mineral que presenta una conductividad térmica (λ) a 20ºC, comprendida entre 20 y 500 W/(m.K) y una superficie específica BET comprendida entre 12 y 50 m2/g, estando basados estos porcentajes en el peso total de la suma de los componentes (a), (b) y (c).
The invention relates to a mineral composition for the preparation of foundry moulds, comprising: (a) from 20% to 90% by weight of plaster, (b) from 10% to 80% by weight of a mineral component based on silica and/or alumina, and (c) from 0.5% to 4.8%, preferably from 1.5% to 4.5% and in particular between 2% and 4.5% by weight, of a mineral powder having a thermal conductivity (X), at 20° C., of greater than 15 W/(m.K) and a specific surface area of greater than 10 m2/g, these percentages being relative to the total weight of the sum of the components (a), (b) and (c).
Composición de escayola para moldes refractarios
Composición mineral para la preparación de moldes de fundición, que comprende (a) de 20 a 90% en peso de escayola, (b) de 10 a 75% en peso de un componente mineral a base de sílice y/o alúmina, y (c) de 0,5 a 4,8%, preferiblemente entre 1,5 y 4,5% en peso, y en particular entre 2 y 4,5% en peso de un polvo mineral que presenta una conductividad térmica (λ) a 20ºC, comprendida entre 20 y 500 W/(m.K) y una superficie específica BET comprendida entre 12 y 50 m2/g, estando basados estos porcentajes en el peso total de la suma de los componentes (a), (b) y (c).
The invention relates to a mineral composition for the preparation of foundry moulds, comprising: (a) from 20% to 90% by weight of plaster, (b) from 10% to 80% by weight of a mineral component based on silica and/or alumina, and (c) from 0.5% to 4.8%, preferably from 1.5% to 4.5% and in particular between 2% and 4.5% by weight, of a mineral powder having a thermal conductivity (X), at 20° C., of greater than 15 W/(m.K) and a specific surface area of greater than 10 m2/g, these percentages being relative to the total weight of the sum of the components (a), (b) and (c).
Composición de escayola para moldes refractarios
RETOT HÉLÈNE (author) / PETIGNY NATHALIE (author) / FOURDRIN EMMANUEL (author) / THIOLIERE STÉPHANE (author)
2019-09-16
Patent
Electronic Resource
Spanish