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Thermal Fatigue in Die Casting Machines

Thermal Fatigue in Die Casting Machines

Die casting is primarily the basic process to manufacture moulded metal product, especially for magnesium or aluminum alloy processing. Similar to plastic injection molding, die casting is characterized by forcing molten metal under high pressure to a mold cavity. In a die casting process, the mould suffers repeatedly rapid temperature changes that cause interior and exterior deformation of the molding machine. The damages and toughness loss owing to temperature change (or thermal stress) may lead to micro-cracks of mold cavities, which grow gradually as they are penetrated by molten metal or damaged by continuous mechanical stresses. To solve those problems and improving the molding performance, thermal insulation is a fundamental consideration for die casting engineers.

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