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Key Points of Precision Aluminum Alloy Die-Casting Mold Manufacturing and Precision Control

Release time:

2026-06-11

Precision aluminum alloy die-casting molds are core equipment for forming high-end metal structural parts, mainly used to produce lightweight, high-precision and high-tightness aluminum alloy components, widely applied in industrial manufacturing, new energy, communication equipment and other fields. Aluminum alloy die-casting features high-temperature melting, high-speed filling and high-pressure forming. Molds are subject to long-term high-temperature impact and molten metal scouring, prone to cavity wear, thermal deformation and cracking. Therefore, mold manufacturing has strict requirements on material selection, heat treatment and processing accuracy. Special mold steel with excellent thermal fatigue resistance and high hardness is adopted in the manufacturing process. Refined quenching and tempering heat treatment processes balance the hardness and toughness of the mold, improving its overall service life and thermal shock resistance. The cavity adopts composite processing technologies including high-precision CNC milling, mirror electrical discharge machining and wire cutting to strictly control dimensional tolerance and surface roughness, ensuring the dimensional stability of die-cast parts. Meanwhile, the mold cooling system adopts conformal cooling layout, with differentiated water channel spacing and aperture designed according to cavity structures to balance the temperature field distribution and reduce shrinkage and deformation defects of aluminum alloy die castings. The multi-stage graded exhaust structure quickly discharges internal cavity gas and reduces pore defects. Reasonable demolding structure avoids demolding deformation of thin-wall and special-shaped die castings, adapts to mass production of ultra-thin and special-shaped aluminum alloy precision parts, and continuously improves the forming accuracy and appearance quality of die-casting products.

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