Squeeze casting

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Squeeze casting is a die casting technique that builds on traditional die casting practice and is compatible with aluminum, magnesium, zinc, and copper alloy systems. The cycle time is longer compared to conventional die casting because of the longer metal injection times. The quality of the casting is improved as a result, since premature solidification is reduced. Most castings made using squeeze casting can be heat treated to improve mechanical properties.

Elements of squeeze casting and equipment

Both horizontal and vertical conventional die casting machines can be used in conjunction with squeeze casting . The differences in squeeze casting are attributed to the die design and process parameters. Although squeeze casting has been used to produce castings for many years, a consistent die design methodology has not been documented in the technical literature. Squeeze Casting die design philosophies are considered a trade secret by many companies. As a result, most companies do not want to reveal their die design methodologies. However, several qualitative properties are known. Compared with conventional die casting, squeeze casting die casting molds have larger gates to avoid early solidification during multiplication. Some companies use the classic gates as in conventional die casting. Other companies have found a single major bleed to be ideal. Because squeeze castings have thicker cuts, special attention should be paid to trimming. Sawing is usually required. Automated sawing systems are required for large-scale production.