公开(公告)号：US20150183023A1

公开(公告)日：2015-07-02

申请号：US14404545

申请日：2013-05-27

Applicant: SAINT-GOBAIN PLACO

Inventor： Helene Retot ,  Nathalie Petigny ,  Emmanuel Fourdrin ,  Stéphane Thioliere

IPC: B22C1/00 ,  B22C9/02

CPC classification number: B22C1/00 ,  B22C1/181 ,  B22C9/02 ,  C04B28/14 ,  C04B28/146 ,  C04B2111/00939 ,  C04B14/024 ,  C04B14/06 ,  C04B20/0096 ,  C04B14/303 ,  C04B14/323

Abstract: 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).

Abstract translation: 本发明涉及一种用于制备铸造模具的矿物组合物，其包含：（a）20重量％至90重量％的石膏，（b）10重量％至80重量％的基于二氧化硅和/ 或氧化铝，和（c）在20℃下具有导热系数（X）的矿物粉末的0.5％至4.8％，优选1.5％至4.5％，特别是2％至4.5％ ，大于15W /（mK），比表面积大于10m2 / g，这些百分数相对于组分（a），（b）和（c）的总和的总重量。