| 发明名称 |
Investment casting |
| 摘要 |
The invention provides novel binder, slurry and dry mix compositions for use in the production of investment casting moulds. These compositions comprise water insoluble fibers and significant amounts of uncalcined clay. The compositions display favorable separation characteristics and short drying times. The moulds formed using the compositions have a favourable green strength and conform closely to the wax pattern on which the mould is coated. Also provided are methods of producing the compositions, methods of investment casting mould production utilising the compositions and investment casting coating shells produced using the compositions of the invention. |
| 申请公布号 |
US8834622(B2) |
申请公布日期 |
2014.09.16 |
| 申请号 |
US201213544486 |
申请日期 |
2012.07.09 |
| 申请人 |
|
发明人 |
Shaw Richard Dudley |
| 分类号 |
B22C1/08;B22C1/00;B22C1/18;B22C9/00;B22C9/04 |
主分类号 |
B22C1/08 |
| 代理机构 |
Barnwell Whaley Patterson Helms |
代理人 |
Killough B. Craig;Barnwell Whaley Patterson Helms |
| 主权项 |
1. A composition for use in the production of investment casting moulds, the composition comprising water insoluble fibers and uncalcined clay wherein the composition is an aqueous binder composition, which further comprises a silica sol; and wherein the amount of uncalcined clay in the composition is greater than 10% by weight of the composition, wherein the water insoluable fibers have a denier of 3 to 20. |
| 地址 |
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