| 摘要 |
The disclosure relates to casting bodies usable in precision casting. These casting bodies are composed of a mixture of refractory materials of different granulometries, 2 to 600 microns for the fine grains and 250 to 6,000 microns for the coarse grains, the percentage of fine grains and coarse grains being comprised respectively between 20 and 77 percent and between 23 and 80 percent, and this mixture being bound with the aid of a binder obtained by gelation of a silicate.
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