气缸套铸件控制冷却过程温度场数值分析  

Numerical analysis of temperature field in controlled cooling process of cylinder casing casting

作　　者：王耀耀[1] 杨保海[1] 

机构地区：[1]河南机电高等专科学校汽车工程系,河南新乡453002

出　　处：《兰州理工大学学报》2015年第6期22-26,共5页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(50775155);新乡市重点科技攻关项目(ZG14033)

摘　　要：为获得某种特定的金相组织和预期的材料性能,需要控制气缸套铸件的冷却速度.利用有限元分析软件ANSYS对某型号气缸套铸件控制冷却过程中的温度场进行模拟仿真.先建立控制冷却过程的数学模型并确定其初始条件和边界条件,然后用ANSYS分析出铸件出炉后快速风冷和缓慢冷却过程中温度场的变化规律.结果表明:铸件在快速风冷过程中温度下降较快,铸件不同部位之间温差大;在缓慢冷却过程中温度下降慢,不同部位之间温差小.铸件刚进入保温炉的前几分钟内,在内部热源补充的作用下铸件的低温区域会有短暂升温的现象.计算结果与实际测量结果基本吻合.In order to obtain particular metallographic microstructure and expected properties of material the cooling rate of the cast of cylinder casing needs to be controlled.Finite element analysis software ANSYS is used to simulate the temperature field in a cylinder casing casting during its cooling control.First,the mathematical model of controlled cooling process is established and its initial and boundary conditions are determined.Then the variation pattern of temperature field in the fast air-cooled casting and slowly cooled casting is analyzed with ANSYS.The result showed that the temperature of the casting will reduce faster in the process of rapid air-cooling and there will be a large temperature difference within the casting.The temperature of the casting will slowly reduce in slow cooling process and temperature difference small.The temperature of the casting in low-temperature area will increase in a few minutes after it enters into heat-retaining furnace due to supplement action of internal heat source.

关 键 词：铸件控制冷却 温度场 有限元分析 

分 类 号：TG163[金属学及工艺—热处理]