双层金属板材同速异径蛇形轧制复合变形研究
Study on Composite Deformation of Double Layer Metal Plate by Same Speed and Different Diameter Snake Rolling
乔福振 1国树东 2杨超 1杨瑞卿 1江连运1
作者信息
- 1. 太原科技大学 机械工程学院,太原 030024
- 2. 泰安市质量技术检验检测研究院,山东 泰安 271000
- 折叠
摘要
采用ANSYS Multiphysics/LS-DYNA软件对Q345 碳钢/NM400 耐磨钢复合板轧制复合过程进行了有限元模拟,并开展蛇形轧制实验,验证了所建立有限元模型的准确性.总结了轧辊直径、错位量、摩擦条件和压下量对复合板变形行为的影响,结果表明,其他工艺参数不变条件下,初始辊径和摩擦条件对复合板平直度的影响较大,初始辊径越大和摩擦系数越小,复合板越平直;错位量和压下量对复合板结合面处等效塑性应变的影响较大,错位量适当增大,压下量越大,复合板结合面处变形更充分;轧辊直径对复合板厚度比影响较大,轧辊直径越大,复合板层厚比越大.其中蛇形轧制错位量的调整可同时实现对板材厚度比、等效塑性应变和弯曲曲率的正向调控,证明了可以通过调整蛇形轧制的错位量获得形性兼优的金属复合板.
Abstract
The ANSYS Multiphysics/LS-DYNA software was used to conduct finite element simulation of the roll-ing composite process of Q345 carbon steel/NM400 wear-resistant steel composite plate.The accuracy of the estab-lished finite element model was verified by comparing with the snake rolling experiment.The influence of roller di-ameter,roll offset,friction conditions,and reduction on the deformation of composite plates was summarized.The results showed that within a certain range,the initial roller diameter and friction conditions had a greater impact on the flatness of the composite plate.The larger the initial roller diameter and friction coefficient,the flatter the com-posite plate;The roll offset and roll reduction have a significant impact on the equivalent plastic strain at the joint surface of the composite plate.The roll offset increase appropriately,the greater the roll reduction,and the more complete the deformation at the joint surface of the composite plate.The adjustment of roll offset can simultaneously achieve positive control over the thickness ratio,equivalent plastic strain,and bending curvature of the composite plate,proving that metal composite plates with excellent shape and properties can be obtained by adjusting the roll offset of the snake rolling.
关键词
复合板/蛇形轧制/等效塑性应变/层厚比/弯曲曲率Key words
composite plate/snake rolling/equivalent plastic strain/thickness ratio/bending curvature引用本文复制引用
基金项目
国家自然科学基金(52175354)
中央引导地方科技发展资金项目(YDZJSX2022A052)
出版年
2024
NETL
NSTL
万方数据