摘要：小型轧机的主机改造设计主要包括工作辊、支承辊、压下装置和机架的设计，工作辊安装在所述机架的工作窗口的上部，支承辊则安装在机架的工作窗口的下部。轧辊在轧制时，会直接接触轧件，迫使轧件发生塑性变形，轧辊会受到很大的轧制压力。轧制时对轧辊的强度、耐磨性、表面硬度、刚度、辊形都有很高的要求，从而确保轧件的质量和产量。轧辊调整装置主要是调整轧辊在机架中的相对位置，以此来保证需要的压下量、轧件尺寸以及一定的轧制工艺。轧钢机的机架极其重要，轧辊轴承座和轧辊调整装置等都会安装在机架上。机架要承受轧制力，必须有足够的强度和刚度。

毕业论文关键词： 二辊轧机；轧辊；平衡装置；机架

Retrofit design of small mill

Abstract：Small mill retrofit design of the host mainly including work roll and backup roll, the design of the screw-down and rack, work roll installed in the upper portion of the frame work of window, backup roll is installed on the frame work of the lower part of the window.When rolling roll, can direct contact with the rolled piece, forced the rolled piece plastic deformation occurs, roll will be affected by large rolling pressure.Rolling on the roll strength, wear resistance, surface hardness, stiffness, rolls have high requirements, so as to ensure the quality of the rolled piece and production.Roll adjustment device is mainly roll relative position in the frame, in order to guarantee the quantity of the need, the size of the rolled piece and rolling technology.Rolling mill frame is extremely important, rolling bearing and roller adjustment device is installed on the frame.Stand to inherit the rolling force, must have sufficient strength and rigidity.

目录

1   绪论 1

1.1 轧钢机简介及其研究和发展 1

1.2 轧制系统主要设备（轧钢机）概述 1

1.3 设计的技术要求和主要技术参数 2

2 轧辊的设计 3

2.1 轧辊的简介 3

    2.1.1 轧辊概述及其分类....3

        2.1.2 轧辊的结构.4

2.2 轧辊各参数的确定 5

2.2.1 轧辊直径D与辊身长度L的设计与计算 5

2.2.2 轧辊辊颈尺寸d 和l确定 7

2.2.3 轧辊传动端的型式与尺寸 8

2.3 轧辊的材料 9

    2.4  轧辊的校核....10

2.4.1 轧辊的破坏分析 10

2.4.2 轧辊的强度校核 11

2.4.3 轧辊的挠度计算 13

2.4.4 轧辊的弹性压扁变形 16

3 轧辊轴承的设计 18

3.1 轧辊轴承的工作特点 18

3.2 轧辊轴承的分类 19

3.3 轧辊轴承的确定 19