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Pressure die casting is a manufacturing process where molten metal is injected into a mold cavity under high pressure. This process is widely used in various industries to produce complex shapes and high-quality components. One of the fundamental aspects of pressure die casting is the calculation of tonnage, which is crucial for designing molds and selecting the appropriate machinery. In this article, we will explore the significance of tonnage calculation, the factors influencing it, and the steps involved in performing the calculation.