摘要CVC技术是目前较先进的板形控制技术之一，而且在轧制过程中，CVC和液压工作辊弯辊相配合对带钢断面形状和带钢平直度控制效果显著，而且工作辊的磨损情况得到了改善。很多生产厂为了提高产品的质量和企业效益也正在对工作辊弯辊装置和工作辊轴向横移装置进行技术改造和结构改进。本设计以宝钢2050mm连轧机组中的F1机架的数据作为参考，对板带轧机电动压下系统进行设计。首先对压下形式进行选择，然后对压下系统中的主要部分如压下螺丝、压下螺母做设计计算，最后根据压下功率选择电机。设计中对四辊CVC轧机的主传动部分和试车要求进行简单的叙述，并对一些主要零件如工作辊、机架、联接轴和轧辊轴承做了强度校核，其结果满足要求。最后，本设计对此题目的技术经济及社会效益做了简单的分析。
关键词：板带轧机，电动压下，CVC轧机，主传动
Electric Screw Down System Design Of Strip Rolling Mill
Abstract In recent years, CVC technology has been one of the most advanced strip shape control technology in the world and getting more and more popular. The employment of hydraulic work roll bending in conjunction with CVC has achieved good results in significantly increasing the strip profile and flatness control range, reducing wear of work rolls and extending maintenance intervals and service life of the work rolls. Under the pressure of competition comes from both internal and external, many steel plants have to take some measures to improve the strip surface quality to increase their income, many of them are delving into upgrading their technology and reconstructing the devices of work roll bending and work roll shifting. I selected the subject of electric screw-down system design of strip rolling mill. In the course of designing, I took the CVC mill roll for example and refer to some data of F1 stand of the finishing rolling train of 2050 CVC hot continuous rolling mill in Baoshan Iron & Steel Corp.. First, design of electric screw down system is accomplished by means of choosing screw down form, calculating and determining main parameters of screw and nut, choosing motor. The composing of main drive installed on 4-h CVC rolling mill and something required in trail run are also introduced in the paper. Meanwhile, strength checking of some major components is done and the results illuminate that these parts such as work roll, housing, joint slack and roller bearing meet the demand. Finally, the economic technology and social benefit are simply analysed.
Keywords:strip mill roll, electric screw down, CVC mill, main drive
目录
第一章绪论............................................................................................................................... I §1.1 热连轧机的发展概况 (1)
§1.2 CVC技术原理及优点 (2)
§1.3 设计题目的意义 (2)
§1.4 课题的研究方法和研究内容 (3)
第二章轧机力能参数计算 (4)
§2.1 总体方案设计与选择 (4)
§2.2 设计的已知数据 (4)
2.2.1 压下规程 (4)
2.2.2 主要参数 (4)
§2.3 轧制力的计算 (5)
2.3.1 轧辊的选取及验证 (5)
2.3.2 平均变形程度的计算 (5)
2.3.3 平均单位压力的计算 (6)
2.3.4 总轧制力的计算 (8)
§2.4 轧制力矩的计算 (8)
§2.5 主电机容量计算 (9)
2.5.1 摩擦力矩的计算 (9)
2.5.2 工作辊带动支承辊的力矩计算 (9)
2.5.3 驱动工件辊的力矩计算 (10)
2.5.4 初选电机 (11)
2.5.5 电动机的校核 (11)
第三章压下系统的设计 (15)
§3.1 压下形式的选择 (15)
§3.2 压下零件的设计计算 (15)
3.2.1 压下螺丝的设计计算 (15)
3.2.2 压下螺母的结构尺寸设计 (17)
