| 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/20
Castor Wax/40
Rosin/-
Polystyrene/40 |
| 配制方法： |
This mixture is injected into lead-tin-bismuth molds at 80-85'C with pressure of 75-100 kg/sq com. Cores may be removed at 50'C. They are well polished, solid, and precisely dimensioned. |
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