热处理数学模型与计算机模拟  

Mathematical Model of Heat Treatment and Its Computer Simulation

作　　者：潘健生[1] 张伟民[1] 田东[2] 顾剑锋[1] 胡明娟[1] 

机构地区：[1]上海交通大学,上海200030 [2]上海大众汽车有限公司,上海201805

出　　处：《中国工程科学》2003年第5期47-54,共8页Strategic Study of CAE

摘　　要：热处理计算机模拟是热处理智能化的基础。采用三维非线性有限元模型和界面条件突变的处理方法实现了几种复杂形状零件在复杂的淬火操作过程中温度场、相变、应力和应变的模拟 ,模拟结果与实测结果基本相符。将气体渗碳的计算机模拟与计算机控制技术相结合 ,研制成功智能型密封多用炉自动生产线 ,已处理渗碳件 3 0 0 0炉次以上 ,全部合格。计算机模拟技术的应用明显提高渗碳和渗氮零件的承载能力和可靠性 ,减少热处理变形 ,缩短渗碳时间。建议将机械产品的CAD、选材与热处理的CAE和产品可靠性的动力评估技术相结合 。Computer simulation on heat treatment is the foundation of intelligent heat treatment. The simulation of temperature field, phase transformation, stress/strain in complicate quenching operation has been realized with the three dimensional non-linear finite element method model and the methods of treating for abruptly changed interface conditions. The simulation results basically fit those measured in experiments.A production line with intelligent sealed multipurpose furnace has been developed based on the combination of computer simulation on gaseous carburizing and computer control technology. More than 3 000 batches of workpieces have been processed, and all are up to standard. The application of computer simulation technology can significantly improve the load-carrying ability and reliability of the nitriding and carburizing workpieces, reduce heat treatment distortion, and shorten carburizing duration. It is recommended that the reliable product design without redundancy be performed with the combination between the CAD of mechanical products, the CAE of materials selection and heat treatment, and the dynamic evaluation technology of product reliability.

关 键 词：热处理 数学模型 计算机模拟 智能化 

分 类 号：TG15[金属学及工艺—热处理] O242[金属学及工艺—金属学]