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Allstate

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Die casting is a manufacturing process for producing accurately dimensioned, sharply defined, smooth or textured-surface metal parts. It is accomplished by forcing molten metal under high pressure into reusable metal dies. The process is often described as the shortest distance between raw material and finished product. Die casting is an efficient, economical process which, when used to its maximum potential, replaces assemblies of a variety of parts produced by various manufacturing processes at significant savings in cost and labor. Allstate can produce castings whose weights are from grams to 9 kilograms. We provide our customers the shortest time line to product completion by providing total production machining. Our equipment includes conventional machining equipment and high precision CNC. After painting or plating of castings, the items always need to be cleaned or finished. We can handle the entire processing very well. The techniques we can supply are plating, shot blasting, heat treatment, anodizing, electrostatic painting, conventional machining, assembly, powder coating, polishing, buffing, sanding and washing.

Material:

Zinc, aluminum, copper, and magnesium.

Process

1) A strong vacuum instantaneously evacuates all air from the cavities and feed channels. This vacuum begins drawing the molten aluminum through the transfer tube into the injection cylinder.

2) In two seconds or less, the desired amount of molten alloy is drawn from the center of the melt, through the transfer tube, and into the injection cylinder. The first movement of the plunger shuts off the metal flow from the feed tube to control the amount of metal ladled.

3) The molten alloy is then smoothly injected into the air-free die cavities while the vacuum remains active avoiding any air pockets and resistance to metal fill. Then high pressure is brought to bear on the freezing metal, while the vacuum remains active.

4) After an appropriate dwell time, the die opens and the part is automatically ejected onto a shuttle tray for transfer out of the die area. Each shot is then inspected by the casting operator before passing it on to the trim area.

Benefits of die casting:

Rapid metal transfer

Equipment