Analysis of premature failure of work rolls in a cold strip plant
Hongchun Li, Zhengyi Jiang, Kiet , Tieu , Weihua Sun


School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
Technology Centre, Jinan Iron and Steel Ltd., Jinan 250101, PR China
Received 12 September 2006; received in revised form 15 January 2007; accepted 18 January 2007
Available online 23 May 2007


Abstract

In this paper, premature failures of several work rolls on a cold strip mill were investigated. In order to study the work roll surface feature and failure mechanism, the chemical compositions, microstructures and the hardness of roll materials were examined. The stresses in the spalled area of the work roll have been calculated, and the stress states identified. The causes for the roll wear and damage have been identified in the study. The surface images of the work rolls have been studied, and the characteristics of wear have also been characterised for the damaged rolls. It has been found that the operating factors and metallurgical defects affected the roll service life in cold strip rolling.
2007 Elsevier B.V. All rights reserved.
在冷軋廠工作軸過早發(fā)生故障的分析
Hongchun Li, Zhengyi Jiang, Kiet , Tieu , Weihua Sun

澳大利亞，新南威爾士州2522，Wollongong，Wollongong大學(xué)，機(jī)械學(xué)院，材料和機(jī)械電子工程
濟(jì)南鋼鐵有限公司技術(shù)中心，濟(jì)南250101，中國
收到2006年9月12日，在2007年1月15日收到，2007年1月18日
2007年5月23日網(wǎng)上提供


概述

在本文中，對幾個(gè)冷連軋機(jī)工作軸過早失效進(jìn)行了調(diào)查。為了研究工作軸表面特性和破壞機(jī)理，化學(xué)成分，微觀結(jié)構(gòu)和軋軸材料的硬度進(jìn)行了研究。已計(jì)算在工作軸剝落面積的壓力，確定應(yīng)力狀態(tài)。在研究中，軋軸磨損和損壞的原因已經(jīng)查明。對工作軸表面圖像進(jìn)行了研究，發(fā)現(xiàn)了已損壞的軋軸磨損特性的特點(diǎn)。人們已經(jīng)發(fā)現(xiàn)，經(jīng)營的因素和冶金缺陷將影響在冷軋帶鋼軋軸的使用壽命。
2007 Elsevier B.V保留所有權(quán)利。

關(guān)鍵詞：
穿;工作軸冷軋;應(yīng)力分布