Effect of Pre-tension Amount on Formation Accuracy of AZ31 As-extruded Profile in Warm Tension-rotation Bending Process
A warm tension rotation bending process is presented to bend the AZ31 as-extruded profile.The effect of pretension amount on formation accuracy of bent AZ31 as-extruded profile was investigated by using numerical and experimental methods.A 3D elastic-plastic thermo-mechanical coupled finite element model of AZ31 profile in bending process was established and the bending experiments were carried out.The results indicate that pre-tension amounts increasing from 0.2% to 1.1%,the numerical and experimental springback angles of AZ31 bent profile all decrease,the experimental springback angles decrease from 12.5° to 9.8°; the numerical and experimental bending radii all decrease,the experimental bending radii decrease from 95.60 mm to 92.83 mm; the distortion of cross-section increases,the sequencing of distortion levels is the thickness of outside-rib,the thickness of inside-rib,the width of outside of the profile,the width of inside of the profile and the thickness of middle-rib.
AZ31 As-extruded Profile Tension-rotation Bending Pre-tension Amount Formation Accuracy Numerical Simulation
Xiao Han ZHANG Shi-hong Liu Jin-song Cheng Ming
School of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650 Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016 China
国际会议
沈阳
英文
747-753
2013-07-06（万方平台首次上网日期，不代表论文的发表时间）