Under normal conditions, the mold temperature for magnesium alloy high-pressure die casting must be precisely controlled within 150–250°C to achieve thermal equilibrium and reduce defects such as shrinkage cavities, deformation, die sticking, or poor formability.
To prevent issues like die sticking, deformation, or shrinkage cavities caused by excessively high mold temperatures, measures include: thickening walls or optimizing heat dissipation paths in non-uniform sections to balance solidification rates and enhance cooling; equipping with circulating oil circuits and oil temperature controllers to stabilize the mold temperature field in real time; and preheating the mold to 150–200°C before production to avoid thermal shock-induced cracking.
From the perspective of release agents: Enhance their thermal stability to prevent degradation at high temperatures, enabling the formation of a protective film on the mold that facilitates magnesium melt filling and solidification. Additionally, to address poor formability caused by excessively low mold temperatures, im
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