化学配方数据库
| 配方类型： | METALS |
| 配方说明： | Lost Wax Precision Casting Core (French Patent 1,185,891) |
| 配方组成： | Coumarone Resin/- Castor Wax/50 Rosin/25 Polystyrene/25 |
| 配制方法： | This mixture is injected into lead-tin-bismuth molds at 80-85C with pressure of 75-100 kg/sq com. Cores may be removed at 50C. They are well polished, solid, and precisely dimensioned. |
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