铰链型钢轧制与空冷过程弯扭变形的有限元分析  

Finite element analysis on bending and torsional deformation in rolling and air cooling process of hinge steel

作　　者：彭洲 李立新[2] 苏严 Peng Zhou;Li Lixin;Su Yan(School of Materials and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,China;Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]武汉科技大学材料学部,湖北武汉430081 [2]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北武汉430081

出　　处：《锻压技术》2024年第9期81-91,共11页Forging & Stamping Technology

基　　金：武汉科技大学省部共建耐火材料与冶金国家重点实验室基金(2014QNO3)。

摘　　要：为揭示铰链型钢在成品道次轧制与空冷过程中产生弯曲扭转变形的原因,并寻求有效控制成品扭转变形的最佳轧制工艺参数组合,建立了确定铰链型钢轧制与轧后空冷全过程变形的有限元计算模型,探明了轧辊辊径配置、孔型中性线相对水平线的孔型偏转角度、开轧温度、电机转速和冷却水温度等主要轧制工艺参数对成品扭转变形的影响规律,并确定了保证成品扭转角度最小的轧制工艺参数组合。结果表明:铰链型钢在成品道次轧制过程中主要产生扭转变形,在轧后空冷过程中则主要发生弯曲变形,最终导致成品产生明显的弯扭变形;轧辊辊径配置与孔型偏转角度对成品扭转变形具有显著影响;保持上轧辊半径与孔型尺寸不变,下轧辊半径减小15 mm,孔型中性线相对水平线偏转-3.2°,成品扭转角度接近于0°。因此,通过有限元分析可得出适宜的轧制工艺参数组合,从而有效控制铰链型钢的扭转变形。In order to reveal the reasons of bending and torsional deformation for hinge steel during the finished product rolling process and air cooling process,and seek the optimal rolling process parameters combination for the effective control of the torsional deformation of the finished product,a finite element calculation model of deformation during the rolling and air cooling process for hinge steel after rolling was established,the influence laws of roller diameter configuration,hole deflection angle of hole neutral line relative to horizontal line,opening rolling temperature,motor speed,cooling water temperature and other major rolling process parameters on the torsion deformation of the finished product were explored,and the combination of rolling process parameters to ensure the minimum torsional angle of the finished product was determined.The results show that the torsional deformation is mainly produced in the hinge steel during the final pass rolling process,and the bending deformation is mainly produced during the air cooling process after rolling,which finally results in obvious bending and torsional deformation of the finished product.The roller diameter configuration and hole deflection angle have significant influence on the torsional deformation of the finished product.The upper roller radius and hole size are unchanged,the lower roller radius is reduced by 15 mm,the neutral line of hole is deflected to the horizontal line by-3.2°,and the torsional angle of the finished product is close to 0°.Therefore,the suitable rolling process parameters combination by finite element analysis can effectively control the bending and torsional deformation of hinge steel,namely.

关 键 词：铰链型钢 弯扭变形 网格重构 正交实验 回归分析 

分 类 号：TG335.4[金属学及工艺—金属压力加工]