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aluminum-die-casting

What is Aluminum Die Casting

50 Published by admin Sep 07,2019

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Do you know what is aluminum die casting?

With aluminum die casting, a process takes place where molten metal is forced into a cavity in which a mold is formed. The process is achieved with a pair of steel dies that have been machined into particular shapes, which form the molding cavity when joined together. A similar process can also be applied with castings made of copper, magnesium and other metals.

die casting

The process of aluminum die casting is divided into four stages: preparation, fill, ejection and trim off the gate.

First, a lubricant or die release agent is applied to each half of the cavity in preparation for the injection of the metal to be cast. Next, the dies are brought together and the cavity — in some cases one, in some cases two or more — is filled with molten metal under high pressure, which is maintained until the casting hardens.

A waiting period follows, after which the metal will have hardened into its final shape. With that step completed, the dies are separated and the castings are pushed out of the mold with ejector pins. Afterward, the parts that comprise the scrap — runners, spruces, overflows etc. — are trimmed away. In some cases, the finished shape will then receive sanding or polishing along the surfaces.

The high pressure at which the cavity is filled is crucial to the process because this prevents any part of the casting from hardening prematurely. This also ensures that the entire cavity is filled with no discontinuity, which could otherwise occur in die castings with complex shape formations. High pressure also eliminates the possibility of air bubbles, while the entrapment of air is further avoided with vents along the dies surfaces.

die casting

Aluminum die castings can also be produced with secondary features on molds, such as holes and grooves. Aluminum die casting is used to create everything from marine and sporting components to oil pumps, engine cradles, transmission transfer cases, heat-sinks, enclosures, and brake components. The process is generally reserved for high-volume industrial productions.

Kaierwo is a custom die casting service factory in China, Established in 2002, Own r&d team, You can get products 30% cheaper than US/EU,Contact us Now

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