In order to maximize the quality of a part produced with die casting, the die caster must understand the process window. The goal of PQ2 is to determine what the optimum process window is and how that relates to the machine. This book provides a step-by-step process that will allow even a beginning designer to construct a PQ2 diagram and use it to determine the ideal gate size and machine for a die.
Previous versions of PQ2 have used a “design for machine” mentality, where a machine is chosen and the casting made to fit the machine. In this version a “design for casting” mentality is used. This means that the die caster will start by creating the optimal process window for the casting. From this the caster can chose the machine that best fits the casting.
This version also incorporates Professor Al Miller’s fill time equation. This equation utilizes the physical properties of the alloy; as opposed to the empirically driven Lindsay-Wallace equation.
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