大型Al-Si活塞低压铸造工艺研究  

Production of Large Al-Si Alloy Piston by Low Pressure Casting

作　　者：程先军[1] 

机构地区：[1]武汉船舶职业技术学院附属工厂

出　　处：《特种铸造及有色合金》2008年第7期527-528,共2页Special Casting & Nonferrous Alloys

摘　　要：论述了大型Al-Si活塞的低压铸造工艺，包括铝液的浇注温度、模具温度、模具的冷却与涂料以及活塞的浇注工艺。以缸径为300mm的活塞为例，在浇注温度为640℃、充型压力为0．025MPa、充型速度为0．4m／s、结晶压力为0．22～0．25MPa、结晶时间为13-14min的工艺条件下，其生产效率和产品品质均达到批量生产的要求。The pouring temperature, mould temperature, mould cooling and coating as well as pouring process of large Al-Si alloy piston in low pressure casting were described. The production efficiency and quality of Al-Si alloy with 300 mm in diameters can meet the production-volume requirements with pouring at 640 ℃ and filling at 0.025 MPa and 0.4 m/s as well as holding pressure at 0.22~0.25 MPa for 13~14 min.

关 键 词：大型Al—Si活塞 低压铸造 温度 浇注工艺 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TG249.2[金属学及工艺—金属材料]