The larger the die-casting machine tonnage, the bigger the corresponding workpieces—and the higher the demands on the release agent. For example, motor housings require stricter release and lubrication performance from the agent than general hardware parts.
Thicker, more complex part geometries generate more heat within the mold. This escalates requirements for the release agent’s heat resistance and lubrication performance. For instance, cylinder blocks typically demand higher heat/lubrication resistance than standard automotive components.
Higher die temperatures—especially when paired with inadequate mold temperature control (no mold temperature controller) or poor self-cooling—intensify the need for heat-resistant release agents. Only high-heat-resistant agents can form a robust, protective film on the mold surface, enabling smoother demolding.
Poorer molten metal fluidity reduces filling capacity during molding. To compensate, better release agents are required to enhance molten metal flow and prevent defects.
If downstream cleaning/coating processes are stringent—particularly those involving adhesive bonding or electrophoretic painting—the release agent must not only ensure clean demolding but also be compatible with these finishing steps. This prevents interference and guarantees smooth subsequent production.
Any factor impacting molten aluminum filling/solidification or post-processing (cleaning/coating) warrants extra attention during release agent selection.
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