Hybrid cam hole sand core with metal chilling block for cast aluminum cylinder body

A system for manufacturing a hybrid cam bore core with a metal chill for an engine block includes an engine block casting of aluminum material. A camshaft bore extends through the engine block. A cam bore core having at least one metal chill is positioned within the camshaft bore. During casting of the engine block, a body portion of the at least one metal chill is positioned in direct contact with a cam bearing surface of the at least one cam bearing member to increase a cooling rate of the at least one cam bearing member and produce a depth of crystalline material of the cam bearing member with enhanced mechanical properties. 一种制造用于发动机缸体的具有金属冷铁的混合凸轮孔砂芯的系统，包括铝材料的发动机缸体铸件。凸轮轴孔延伸穿过发动机缸体。具有至少一个金属冷铁的凸轮孔砂芯定位在凸轮轴孔内。在发动机缸体的铸造过程中，至少一个金属冷铁的主体部分定位成与至少一个凸轮轴承构件的凸轮轴承表面直接接触，以增加至少一个凸轮轴承构件的冷却速率，并产生具有增强的机械性能的凸轮轴承构件的结晶材料深度。