发明名称 |
Calcium oxide-based ceramic core and preparation method thereof |
摘要 |
This invention publishes a method to prepare CaO-based ceramic cores used in investment casting applications. This method claims to use the rare earth oxide to coat the CaO core surface; later the coated cores are shaped then sintered to get the final products. CaO based core was made by 5˜15 wt % plasticizer, 0.001˜20 wt % mineralizer and the rare earth-coated CaO powders to balance for total 100%. This preparation method can solve the CaO core water absorption problems during core manufacturing, shipping and storage process while improve the core chemical inertness and mechanical properties. |
申请公布号 |
US9308579(B2) |
申请公布日期 |
2016.04.12 |
申请号 |
US201314374919 |
申请日期 |
2013.05.31 |
申请人 |
BEIHANG UNIVERSITY |
发明人 |
Wu Guoqing;Zhou Pengpeng;Zhao Jiaqi;Nan Hai |
分类号 |
B22C9/10;C04B35/057;C04B35/628;B22C1/00;B22C1/22;B22D21/02;C04B35/622;C04B35/634 |
主分类号 |
B22C9/10 |
代理机构 |
Pai Patent & Trademark Law Firm |
代理人 |
Pai Patent & Trademark Law Firm ;Pai Chao-Chang David |
主权项 |
1. A CaO-based ceramic core, consisting materials as follows: 5˜15 wt % plasticizer with rare earth oxides-coated CaO powders for balance. |
地址 |
Beijing CN |