Weight control of the metal dosage in die-casting

This article describes the design of a dosage controller which includes measurement of the level of liquid metal in the furnace.

Die-casting is a very effective way of mass-producing cast metal parts and the method is widely used in the automobile industry. Liquid metal is passed from a furnace to a casting machine where it is formed in a mold under pressure. It is important that the correct quantity of material is used as this directly affects the product quality, but there are a number of variables influencing the dosage which must be automatically controlled.

This article describes the design of a dosage controller which includes measurement of the level of liquid metal in the furnace. The level is obtained indirectly by weighing the furnace and its contents using HBM weighing equipment.