普碳板的轧制工艺设计及平面形状控制 - 图文

辽宁科技大学本科生毕业设计 第I页

摘 要

为了提高分析和解决实际问题的能力，完成从事科学研究工作和专业工程技术工作的基本训练，我综合运用本学科的基本理论、专业知识和基本技能，做了一些学习和研究，并取得了一些成果。本设计主要分为综述、Q235B轧制工艺制度的制定、压下规程设计、设备校核、利用VB编程进行轧制变形规程优化并绘制了车间平面图。本专题主要从平面形状控制的几种技术着手，总结了其原理以及如何实现自动控制。

关键词：中厚板；Q235B；车间工艺设计；平面形状控制

辽宁科技大学本科生毕业设计 第II页

Abstract

In order to improve the ability to analyze and solve practical problems, to complete the work in the scientific research and professional engineering and technical work of basic training, I integrated use of the basic theories of this discipline, professional knowledge and basic skills, did some study and research, and obtained some achievements. This design is mainly divided into review, constituting the system of Q235B rolling process, the pressure regulation design, equipment checking, using VB programming to optimize rolling deformation rules and draw workshop floor plan. This topic mainly from several planar shape control technology, summarized its principle and how to realize automatic control.

Keywords: Middle-thick plate ; Q235B ; Workshop process design ; Plane shape control

辽宁科技大学本科生毕业设计 第III页

目 录

摘 要 ................................................................................................................................. I 1 综述 .............................................................................................................................. 1

1.1 普碳板的特点 ......................................................................................................... 2 1.2 普碳板的分类 ......................................................................................................... 2 1.3 Q235B的化学成分和力学性能 .............................................................................. 4

2 Q235B轧制工艺流程的制定 ................................................................................ 5

2.1 原料的选择 ............................................................................................................. 5 2.2 原料的加热 ............................................................................................................. 6 2.3 除鳞 ......................................................................................................................... 6 2.4 轧制 ......................................................................................................................... 6 2.5 矫直 ......................................................................................................................... 7 2.6 轧后冷却 ................................................................................................................. 7 2.7 精整 ......................................................................................................................... 8 2.7.1 剪切 ................................................................................................................... 8 2.7.2 热处理 ............................................................................................................... 8 2.8 质量检测 ................................................................................................................. 8

3 压下规程设计 ........................................................................................................... 9

3.1 坯料的选择 ............................................................................................................. 9 3.2 压下制度 ................................................................................................................. 9 3.3 速度制度 ............................................................................................................... 10 3.4 温度制度 ............................................................................................................... 12 3.5 计算各道次平均单位压力、总压力 ................................................................... 12 3.6 计算传动力矩 ....................................................................................................... 13 3.6.1 轧制力矩的计算 ............................................................................................. 13 3.6.2 附加摩擦力矩的计算 ..................................................................................... 14 3.6.3 空转力矩的计算 ............................................................................................. 14

辽宁科技大学本科生毕业设计 第IV页

3.7 辊型设计 ............................................................................................................... 16 3.7.1 轧辊的不均匀热膨胀 ..................................................................................... 16 3.7.2 轧辊的弹性弯曲变形 ..................................................................................... 16 3.7.3 辊缝凸度 ......................................................................................................... 18 3.7.4 轧辊的磨损 ..................................................................................................... 18 3.7.5 辊型设计 ......................................................................................................... 18

4 设备校核 ................................................................................................................... 21

4.1 轧辊强度校核 ....................................................................................................... 21 4.1.1 支承辊强度校核 ............................................................................................. 21 4.1.2 工作辊强度计算 ............................................................................................. 22 4.1.3 接触应力的计算 ............................................................................................. 24 4.2 电机发热过载校核 ............................................................................................... 25

5 轧制变形规程的优化 ........................................................................................... 27

5.1 轧制变形规程程序的设计及运用 ....................................................................... 27 5.2 轧制变形规程的优化 ........................................................................................... 30 5.2.1 咬入条件 ......................................................................................................... 30 5.2.2 速度条件 ......................................................................................................... 32

专题 ................................................................................................................................. 35 平面形状控制 .............................................................................................................. 35

1 平面形状控制概况 .................................................................................................. 35 (1) 成材率 ................................................................................................................ 35 (2) 平面形状控制技术发展史 ................................................................................ 36 (3) 中厚板轧制的一般过程及特点 ........................................................................ 38 2 平面形状控制技术 ................................................................................................ 39 (1) MAS轧制法 .................................................................................................... 39 (2) 立辊轧边法 ........................................................................................................ 42 (3) 狗骨轧制法 ........................................................................................................ 49 (4) 薄边展宽轧制法 ................................................................................................ 53 (5) 咬边返回轧制法 ................................................................................................ 55

辽宁科技大学本科生毕业设计 第V页

(6) 留尾轧制法 ........................................................................................................ 55 (7) 无切边轧制法 .................................................................................................... 56 3 厚板平面形状自动控制的实现 .............................................................................. 57 (1) MAS轧制法计算机自动控制系统 ................................................................ 58 (2) 立辊轧边法和无切边轧制法计算机自动控制系统 ........................................ 62 (3) 狗骨轧制法的计算机控制系统 ........................................................................ 63 (4) 差厚展宽轧制的过程和控制原理 .................................................................... 64 4 厚板平面形状控制在生产实践的应用 .................................................................. 64 (1) MAS法的应用（一） .................................................................................... 64 (2) MAS法的应用（二） .................................................................................... 65 (3) 立辊轧边法在生产实践中的应用 .................................................................... 68 致 谢 .............................................................................................................................. 72 参考文献 .......................................................................................................................... 73

百度搜索“77cn”或“免费范文网”即可找到本站免费阅读全部范文。收藏本站方便下次阅读，免费范文网，提供经典小说综合文库普碳板的轧制工艺设计及平面形状控制 - 图文在线全文阅读。