Transactions of Materials and Heat Treatment

Title：Influence of roll gap difference and mill assembly gap on side deviation of finished steel strip tail plate

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ClassificationCode：TG335

year,vol(issue):pagenumber：2021,46(1):116-125

Abstract：

To discuss the influences of two important factors such as roll gap difference and mill assembly gap on the side deviation of finished steel strip tail plate, the finish rolling model of the 1st, 2nd and 4th stand and the end bending strip were established by software Abaqus according to the operating conditions of hot rolling production line, and by setting roll gap difference of different levels and changing the relative position of upper and lower rolls, the influences of roll gap difference and assembly gap of each stand on the rolling force difference on both sides of roll, the center deviation at the end of strip and the movement behavior of strip were simulated and analyzed. The results show that the adjustment of roll gap difference effectively corrects the deviation amount of centerline for strip, reduces the rolling force difference due to the deviation of centerline for strip, decreases the probability of tail plate impact, and the asymmetry of mill assembly gap causes the side deviation of strip and impacts the edge guide to affect the stability of strip movement and the forming quality of strip. Finally, the validation test further verifies the correctness and rationality of the above conclusions.

Funds：

基金项目:国家自然科学基金青年基金项目（51805345）；江苏省自然科学基金青年基金项目（BK20170373）；苏州市重点实验室资助项目（SZS201815）

作者简介：李有智(1982-)，女，硕士，讲师 E-mail：00416@siit.edu.cn

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