| 配方类型： |
METALS AND THEIR TREATMENT |
| 配方说明： |
Foundry-Core Binder (U.S. Patent 2,861,893) |
| 配方组成： |
Water/1.5
Sand (60-120 Mesh)/95.0
Sugar/0.8
Sodium Silicate/2.7 |
| 配制方法： |
The cores are exposed to carbon dioxide gas for 4 to 5 minutes for hardening. This gives increased compressive strength. |
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