Description

Inside the chamber there is a melting pot whose basis rests on a high thermal conductivity graphite block. Under the action of a cylindrical heater, the silicon load contained in the melting pot is melted and later cooled through the conductor block below when it is in contact with a cold surface. This way, a directional solidification is achieved depending on the normal direction to the melting pot basis. The thermal gradient is controlled during the solidification process by shifting the side insulation shield, the heat exchanger plate or both, as well as regulating the power applied to the resistive element heater. The possibility of combining different movements provides higher control over the gradient of temperatures and, therefore, over the quality of the final product.

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