铝合金缸盖火花塞孔预铸及其金相组织  

Pre-casted Spark Plug Hole on Aluminum Alloy Cylinder Head and Its Metallographic Structure

作　　者：张炳荣 田身军[2] 徐帅[2] 项大伟[2] 张守银[2] 

机构地区：[1]永达科技有限责任公司,安徽芜湖241009 [2]奇瑞汽车股份有限公司,安徽芜湖241009

出　　处：《铸造工程》2012年第1期18-22,共5页Foundry Engineering

摘　　要：金属型重力铸造铝合金缸盖预铸火花塞孔，晶间距（SDAS）。预铸状态孔壁的SDAS明显减小，围的组织疏松。从铸件本体取样对比预铸前后孔壁的二次枝抗拉强度等力学性能提高。For aluminum alloy cylinder head by permanent mold gravity casting, specimens were taken from casting in order to compare SDAS （secondary dendrite arm spacing） with and without pre-casting spark plug hole. The hole formed by pre-cast insert shows reduced SDAS and increased tensile strength. The porosity around hole has been improved too.

关 键 词：铝合金缸盖 预铸孔 二次枝晶间距 

分 类 号：TG146.21[一般工业技术—材料科学与工程]