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(3) The influence of mould making on the linear shrinkage rate of castings: a. The influence of wax injection temperature, wax injection pressure and pressure holding time on the size of investment mold is obvious in the wax injection temperature, followed by the wax injection pressure, and the pressure holding time is guaranteed After the investment is formed, it has little effect on the final size of the investment. b. The linear shrinkage rate of wax (mold) material is about 0.9-1.1%. c. When the investment mold is stored, there will be further shrinkage, and its shrinkage value is about 10% of the total shrinkage, but when stored for 12 hours, the investment mold size is basically stable. d. The radial shrinkage rate of the wax mold is only 30-40% of the lengthwise shrinkage rate. The wax injection temperature has a far greater influence on the free shrinkage rate than the hindered shrinkage rate (the preferred wax injection temperature is 57-59℃, The higher the temperature, the greater the shrinkage).

Gravity die casting encompasses a variety of techniques, each with its unique advantages and disadvantages. The choice of casting method depends on production volume, part complexity, material properties, and economic considerations. As technology advances, the efficiency and capability of gravity die casting processes continue to improve, catering to an ever-evolving manufacturing landscape. Understanding the different types of gravity die casting helps manufacturers make informed decisions about which method best suits their needs, ultimately leading to improved product quality and performance.

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Die Casting Tonnage Calculation Understanding the Essentials

Die casting involves forcing molten metal under high pressure into a mold cavity. The process is ideal for producing large volumes of parts with consistent dimensions and smooth surfaces. There are two primary methods of die casting hot chamber and cold chamber. Hot chamber die casting is typically used for metals with low melting points, such as zinc, while cold chamber die casting is suitable for metals with higher melting points, including aluminum and magnesium.

As technology advances, sand casting continues to evolve. Innovations such as 3D printing are increasingly being integrated into the sand casting process, allowing for the rapid production of molds and more complex designs. This integration is poised to enhance customization and reduce lead times significantly.