Die-casting is a metal casting process characterized by the use of the inner cavity of the mold to apply high pressure to the molten metal. Moulds are usually made of stronger alloys, and this process is similar to injection molding. Most die-casting castings are non-ferrous, such as zinc, copper, aluminum, magnesium, lead, tin and tin and their alloys. According to die casting type, the cold chamber die casting machine or hot chamber die casting machine is required.

Foundry equipment and moulds are expensive to build, so the casting process is generally used to produce large quantities of products. It is relatively easy to make die-casting parts, which generally require only four major steps, and the incremental cost is very low. Die-casting is especially suitable for making large quantities of small and medium sized castings, so die-casting is the most widely used in various casting processes. Compared with other casting techniques, the die-casting surface is more flat and has higher dimensional consistency.

Several modified techniques are introduced on the basis of traditional die-casting process, including the non-hole die casting process which reduces the air hole of casting defects. It is mainly used to process zinc, which can reduce the waste material and increase the yield of the direct injection process. There is also a new die casting technology developed by general dynamics company and semi-solid die casting.

A method for improving the structure and mechanical properties of high polymer chains in high polymer chains is arranged by stretching. Stretching can be divided into uniaxial stretching and biaxial stretching, while the former allows the chain to be aligned in one direction, while the latter arranges the chain along the plane.

Forging is a kind of pressure of forging machinery for metal blank, make its produce plastic deformation in order to obtain certain mechanical properties, a certain shape and size of forging processing method, forging, forging and stamping) of one of the two part. By forging can eliminate the metal smelting process of as-cast loose defects, such as optimizing the microstructure, at the same time because of the intact metal flow, forging generally better than that of the same material on the mechanical properties of the castings. The important parts with high load and severe working conditions in the related machinery, except for the simple and usable rolled plates, profiles or welding parts, are used for forging.

Alloy Die Casting Or Stretching Or Forging

Precision Manufacturing Class,Forging Process,Metal Forge,Forged Steel

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