Patent ID: 8459330
Filing Date: 2013-06-11
Classification: B22D

Abstract:
1. A method for producing pigs made of a metal alloy, wherein initially a melt is formed in which a basic material and one or several alloy components are present in a liquid state, from which the pigs are formed, comprising the steps of: loading the melt into a treatment chamber, which treatment chamber is heated to the range of the liquidus level of the metal alloy, cooling the melt, in the course of cooling the melt, increasing the formation of mixed crystals by introducing a supply of energy into the melt by means of a variable field prior to the formation of the pigs, detecting mixed crystal formation by measuring the dynamic viscosity of the melt in a treatment chamber, terminating the supply of energy into the melt after the process of mixed crystal formation has reached a predetermined optimum at which a further energy supply no longer decisively increases mixed crystal formation, and removing the melt from the treatment chamber and pouring it into pig molds.