Internal Model Expert control for slow cooling rate bronze casting

The paper presents a review of the bronze casting methods: the traditional casting in loam or sand molds, issuing high quality products thanks to the slow cooling rate that produces a favorable granularity and the modern precise, fast and cheap casting. We propose a new coated casting method. Coating/uncoating the cooling casting with few flexible insulating layers with different thermal resistances enable us to precisely control the heat flow, and thereby the cooling rate and the granularity. An expert system provided with an internal model, built out of generic visual commands (charts), controls the process.