汽车前防撞梁热成形冷却过程温度场数值模拟  

The temperature field numerical simulation of hot stamping cooling process for front bumper

作　　者：郭怡晖[1,2] 马鸣图[1] 张宜生[3] 宋磊峰[1] 方刚[1] 金建伟[4] 周惦武[2] 

机构地区：[1]中国汽车工程研究院股份有限公司,重庆400039 [2]湖南大学汽车车身先进设计制造国家重点实验室,长沙410082 [3]华中科技大学材料成形及模具技术国家重点实验室,武汉430074 [4]吉利汽车研究院,杭州311228

出　　处：《塑性工程学报》2013年第5期45-49,共5页Journal of Plasticity Engineering

基　　金：国家科技支撑计划资助项目(2011BAG03B02)

摘　　要：采用ProCAST软件，对高强钢板热冲压成形工艺冷却（淬火）过程进行数值模拟分析，计算了连续多个冲压工作循环下模具和坯料的温度场。结果表明，模具在连续多个冲压工作循环中，温度呈周期性的快速上升和快速下降的变化趋势，当每一个冲压工作循环结束时，模具的温度都保持在50℃左右。坯料在淬火过程中，其温度呈快速降低趋势，冲压结束时坯料的出模温度分布在75℃～225℃上下，出模温度随冲压工作循环的进行而依次略有升高，并达到稳定。对模具和坯料进行试验测试，其温度值与数值模拟值吻合较好，说明该计算模型和方法对成形工艺设计有较好的预测评价作用。ProCAST software is adopted to conduct research of numerical simulation on solid quenching course concerning hot stamping Of front bumper to calculate the temperature field distribution of tools and component of multiple stamping cycles. Tools temperature gives the law of rapid rise-to-fall. At time of stamping working cycle termination, temperature of tools surface stabi- lizes at 50℃. The temperature of the component drops quickly during the solid quenching course and it was 75 ℃ ~＇~225 ℃ at the time out of the tools. The temperature of the component out of the tools increased at the end of each cycles. The experimental re suhs are consistent with the numerical simulation. The computer model and method can give a good prediction and guide for process design.

关 键 词：PROCAST 热成形 温度场 数值模拟 

分 类 号：TG376.2[金属学及工艺—金属压力加工]