In the production of aluminum alloy die-cast parts, the phenomenon of molten metal failing to fill the mold cavity, incomplete local contours, or missing edges is commonly referred to as insufficient material. These problems directly affect the dimensional accuracy, appearance quality, and subsequent assembly performance of the product, thus requiring close attention in die-casting process control.
The flowability of aluminum alloy in its molten state is a key factor determining whether the mold cavity is filled. When the temperature of the molten aluminum is too low or the composition ratio is unstable, the molten metal is prone to premature solidification during the filling process, resulting in the incomplete filling of distant areas.
