锻压技术

H型钢开坯轧辊设计的有限元模拟与试验验证

英文标题：Finite element simulation and test verification on design for break-down roll of H-beam

分类号：TG335.4

出版年,卷(期):页码：2021,46(10):161-167

摘要：

为验证开坯轧辊设计的合理性与实用性，首先运用ABAQUS有限元软件建立了H型钢的开坯轧制模型，并通过Gleeble-1500热力模拟机测得了H型钢材料在不同温度及应变速率状态下的应力-应变曲线。然后，基于上述模型和数据，对H型钢的整个开坯轧制过程进行了有限元模拟，并结合H型钢的轧制试验结果，对比分析了H型钢的翼缘和腹板在各道次的轧制缺陷与精度误差。分析结果表明：所设计的H型钢轧辊辊形完全满足设计要求，H型钢在各道次的两侧翼缘的高度误差均能控制在5%以内，该误差是由于孔槽外形不完全对称，使得坯料轧制位置不正，造成偏移而引起的，可以通过进一步优化孔槽外形设计加以改善；腹板厚度存在较大偏差，但这种偏差可以通过开度控制予以修正。

In order to verify the rationality and practicability of design for break-down roll, the break-down rolling model of H-beam was established by finite element software ABAQUS, and the stress-strain curves of H-beam material under different temperatures and strain rates were measured by Gleeble-1500 thermal mechanical simulator. Then, based on the above model and data, the whole break-down rolling process of H-beam was simulated by finite element method, and the rolling defects and precision errors of flange and pectoral plate for H-beam in each pass were compared and analyzed by combining with the rolling test results of H-beam. Analysis results show that the roll shape of H-beam designed completely meets the design requirements, and the height error of the two flange edges for H-beam in each pass can be controlled within 5%. This error is caused by the incomplete symmetry of groove shape resulting in the rolling position deviation of blank, and it can be improved by the further optimization of groove shape design. However, there is a larger deviation in the thickness of pectoral plate, which can be corrected by opening control.

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）；江苏高校“青蓝工程”资助项目（2019）；苏州市重点实验室资助项目（SZS201815）

作者简介：季业益(1980-)，男，硕士，副教授 E-mail：00314@siit.edu.cn

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