菜单
　　
    摘要：本论文利用Deform-3D有限元模拟软件对热轧钢板淬火过程的温度场进行数值模拟，计算了钢板在不同终淬温度和不同冷却速度条件下的瞬态温度场分布云图和沿钢板宽度方向上的温差曲线和温度梯度曲线。模拟结果表明：淬火过程中，钢板表面的温降最明显，温度从表面向心部逐渐上升。随着终淬温度的升高和冷速的加快，使得钢板内部的温差增大，极易导致钢板表面和心部温度与组织不均匀，生成非全马氏体组织，从而导致钢板内部产生残余应力。因此，考虑到现场实际情况并结合研究结果，制定出了较佳的淬火工艺，即终淬温度50℃为较佳的终淬温度，冷却速度30℃/s为较佳的冷速。最后，通过显微组织的观察和硬度测试的分析，发现终淬温度升高，硬度值依次下降；冷速越快，硬度值随之增加，与之前的模拟结果定性符合。6798
    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
  1. 上一篇：高强度铝合金压力加工及热处理强化的研究
  2. 下一篇：DEFORM-3D有限元铝合金拔长变形过程应变场分布的研究

  1. 45钢螺柱-钢板结构摩擦复合热源螺柱焊接研究

  2. 车桥支撑加强板圆形焊接...

  3. DEFORM-3D铝合金微型齿轮挤压成形数值模拟

  4. 模具间隙对热冲压钢板BR1500HS性能影响研究

  5. 模具间隙对热冲压钢板BR1500HS性能影响任务书

  6. DEFORM-3D和CDA110铜合金管材压弯成形工艺分析

  7. 搪瓷钢板抗鳞爆性能检测技术对比研究

  8. 河岸冲刷和泥沙淤积的监测国内外研究现状

  9. 酸性水汽提装置总汽提塔设计+CAD图纸

  10. 当代大学生慈善意识研究+文献综述

  11. 乳业同业并购式全产业链...

  12. 电站锅炉暖风器设计任务书

  13. 杂拟谷盗体内共生菌沃尔...

  14. java+mysql车辆管理系统的设计+源代码

  15. 十二层带中心支撑钢结构...

  16. 中考体育项目与体育教学合理结合的研究

  17. 大众媒体对公共政策制定的影响

　　

About

751论文网手机版...

主页：http://www.751com.cn

关闭返回