锻压技术

4300 mm轧机支承辊新辊型的设计与研究

英文标题：Design and research on new contour of back-up roll for 4300 mm wide plate mill

作者：陈显望孙登月许石民

单位：燕山大学

关键词：支承辊辊型应力场疲劳寿命板形

分类号：TG333.17

出版年,卷(期):页码：2016,41(2):98-102

摘要：

利用赫兹理论分析了支承辊和工作辊接触区的应力状态，结合现有的几种辊型倒角曲线，依据辊间接触应力均匀分布的原则提出了一种新的支承辊辊型倒角。利用ABAQUS有限元软件建立三维轧制模型，通过改变轧制力等参数对不同辊型倒角下支承辊的应力场、工作辊挠度以及钢板的厚度差做了分析和对比；结合有限元分析结果，利用FE-SAFE疲劳分析软件，并采用Brown-Miller疲劳损伤公式估算不同辊型倒角下支承辊的疲劳寿命，证明了新辊型对提高支承辊疲劳寿命的有效性。

Based on the Hertz theory, the stress state between back-up roll and work roll was analyzed. Combining with several existing back-up roll contour curves, a new back-up roll contour chamfering in accordance with the uniform distribution of contact stress was proposed. A 3-D finite element rolling model was also established by the finite element software ABAQUS, and the stress field of the back-up roll, deflection of working roll and thickness difference of steel plate under the different roll contour chamfering were analyzed and compared by changing the rolling parameters. Combined with the results of finite element analysis, the fatigue life of the back-up roll with the different roll contour chamfering was predicted by FE-SAFE fatigue analysis software and the fatigue damage criterion of Brown-Miller. It is proved that the new contour back-up roll is very effective for improving the fatigue life of back-up roll.

基金项目：

河北省自然科学基金资助项目(E2010001155)

陈显望(1990-)，男，硕士研究生

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