基于FEM的轿车活塞挤压成形温度场分析  

Analysis of Temperature Field of Car Piston in Hot Extrusion Forming Based on FEM

作　　者：于智宏[1] 

机构地区：[1]河南机电高等专科学校材料工程系,河南新乡453002

出　　处：《热加工工艺》2013年第15期110-112,共3页Hot Working Technology

摘　　要：基于DEFROM-3D有限元分析软件研究了热挤压工艺对活塞最高温度的影响。结果表明,随着坯料预热温度的增加,活塞最高温度先减小后增加;随着挤压速度或者模具预热温度或者摩擦系数的增加,活塞最高温度均增加;合理的挤压工艺参数为:坯料预热温度410～445℃,挤压速度1.0～3.5mm/s,模具预热温度400～440℃,摩擦系数<0.325。The effect of hot extrusion process on the maximum temperatures of the piston was studied based on the DEFROM-3D software. The results show that,as the initial temperature of blank increases, the maximum temperature of piston decreases firstly, and then increases; as the extrusion speed or initial temperature of dies or friction factor increases, all maximum temperatures of the piston increases; the reasonable extrusion process parameters are that the initial temperature of blank is 410-445℃, the exlrusion speed is 1.0-3.5 nun/s, the initial temperature of dies is 400-440℃, and the friction factor is less than 0.325.

关 键 词：轿车活塞 挤压 活塞最高温度 

分 类 号：TG376.2[金属学及工艺—金属压力加工]