| 配方类型： |
METALS AND THEIR TREATMENT |
| 配方说明： |
Foundry Sand Core and Mold (U.S. Patent 2,765,507) |
| 配方组成： |
Kerosene/0.25-0.75
Water-Soluble Polyacrylic Acid/0.3-1
High Grade Foundry Sand/To make 100
Moisture/2.5-5 |
| 配制方法： |
Mold and air-oven dry at 200 to 350'F. for 10 to 30 minutes. This gives a high hot strength core or mold. |
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