发明名称 |
Mold for the casting of glass ceramic |
摘要 |
The phosphate mold material of this invention comprises refractory materials and binders as principal components, the refractory materials containing cristobalite and quartz, and the binders containing metal oxides which includes magnesia clinker and a phosphate salt. The proportion of said refractory materials to said binders is 80:20-90:10, and the proportion of cristobalite to quartz is in the range 6:1-7:1.
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申请公布号 |
US5013363(A) |
申请公布日期 |
1991.05.07 |
申请号 |
US19900471840 |
申请日期 |
1990.01.29 |
申请人 |
OLYMPUS OPTICAL CO., LTD. |
发明人 |
HAKAMATSUKA, YASUHARU;WATANABE, KAZUHIRO |
分类号 |
B22C1/08;C03B19/02;C04B35/14;C04B35/63 |
主分类号 |
B22C1/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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