摘要
采用数值模拟和实验方法研究薄壁、多筋AZ31镁合金型材温热弯曲过程,分析成形温度对弯曲型材成形精度的影响。结果表明:当成形温度由100℃升高至200℃时,镁合金型材弯曲件回弹角的实验值和模拟值都减小,实验值由11.6°减小至10.7°;弯曲半径的实验值和模拟值都减小,实验值由94.66 mm减小至93.74 mm;弯曲件截面畸变程度增大,对截面尺寸的影响程度依次为外侧筋厚度、内侧筋厚度、外侧距、内侧距和中间筋厚度。
The warm bending process of AZ31 Mg alloy profile with thin-wall and multi-rib was researched by using numerical simulation and experimental methods. The effect of forming temperature on geometric accuracy of bent profile was investigated. The results indicate that forming temperature increasing from 100℃ to 200 ℃ , the numericaly simulated and experimental spingback angles of the bent AZ31 profile all decrease, the experimental values decrease from 11.6% to 10. 7; the bending radii of numerical simulated and experimental values decrease, the experimental values decrease from 94.66 mm to 93.74 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.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2013年第3期73-77,共5页
Transactions of Materials and Heat Treatment
基金
云南省科技厅应用基础研究计划项目(2011FZ057)
关键词
AZ31镁合金型材
温热弯曲
数值模拟
成形精度
AZ31 magnesium alloy profile
warm bending
numerical simulation
geometric accuracy
