Die Casting Design
Ejector Pins, Ejector Pin Marks and Ejector Pin Flash
In order to remove the casting from the die, movable ejector pins may be used and will generally result in a residual ejector pin mark on the die cast part. In addition to automatically pushing the casting from the die after part solidification, ejector pins also serve to keep the casting from bending.
Dynacast engineers work with our customers to determine the best location of these ejector pins as early as possible in conception of the part. The number, size and location of ejector pins required will vary with size and complexity of the die casting, as well as with other factors.
Ejector pin marks on most die casting may be raised or depressed .3mm. Larger castings may require additional pin tolerances for proper casting ejection. Ejector pin marks are surrounded by a flash of metal. Necessary removal of this flash can be reduced by careful component design. Early collaboration with Dynacast in the design of the components will result in a more economical production.
Necessary flash removal can be reduced by careful component design. Collaboration with Dynacast early in the design of components will result in more economical production.