Addvances in investment and burnout furnace design

In recent years, increasing attention has been given to calcium sulphate (gypsum)-bonded investment casting of carat gold alloys. Experimental research has shown that a deeper knowledge of the properties of this material is very important, because it can lead to discomforting failures, if not correctly handled. Only stringent control of chemical reactions, temperature and atmosphere enables high quality castings to be obtained consistently, with simultaneous reduction of production cost.