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.