Deform-3D热轧钢板淬火过程的温度场模拟
关键词：有限元；热轧钢板；温度场；淬火；数值模拟
The temperature field simulation for the hot-rolling sheet steel in the process of Quenching
Abstract：In this paper, the finite element software DEFORM-3D was used to simulate and calculate the temperature field in Hot Rolled Steel plate during the quenching process, and thus the distributions of transient temperature fields of the steel plate at various quenching temperature and cooling speed, the curves of temperature difference and temperature gradient along the width direction. The results show that: during the quenching process, temperature drop is the most obvious on the surface of the steel plate, and gradually temperature rises from the surface to the core. With the increase of quenching temperature and cooling speed speeding up, the difference in temperature of the plate will be increased. It may easily induce non-uniform microstructure in plate and generate not all martensite, and then, lead to produce structure stress and residual stress in steel internal. Therefore, considering the actual site of factory and combine with the research results, we make the best of quenching process. And 50℃ is a better end quenching temperature, 30℃/s is a better cooling rate. Finally, through the analysis of the microstructure observation and hardness test, we can discover that the higher end quenching temperature be, the more hardness value will decrease; the faster the cooling speed be, the more hardness value will increase, and which qualitatively fits the previous simulation results.
Keywords：Finite Element Method; Hot Rolled Steel Plate; Temperature field; Quenching; numerical simulation
目 录
1 绪论 1
1.1 热轧钢板—低碳微合金高强度钢的简介 1
1.1.1低碳微合金板材的发展与现状 1
1.1.2低碳微合金板材的组织特点 1
1.2 热轧钢板的淬火 2
1.2.1淬火原理 2
1.2.2淬火工艺 2
1.2.3淬火过程的温度场模拟 3
1.3 有限元模拟技术在热轧钢板温度场中的应用 5
1.3.1淬火过程计算机模拟的研究现状 5
1.3.2淬火过程常用的数值模拟方法 6
1.4选题的目的和意义 6
1.5课题的研究内容 7
1.6本章小结 7
2 热处理数值模拟技术发展及特点 8
2.1国外热处理数值模拟技术发展 8
2.2我国热处理数值模拟技术发展 9
3 DEFORM有限元分析软件 11
3.1 DEFORM-3D特点 11
3.2 DEFORM-3D系统结构 11
3.3 DEFORM-3D的功能 12
3.4 DEFORM-HT模块介绍 12
3.5 本章小结 12