大规格薄壁镁合金无缝管二辊斜轧穿孔的数值模拟
Numerical Simulation of Two-roll Skew-rolling Piercing for Large-scale Thin-walled Magnesium Alloy Seamless Tubes
胡建华 1靳帅帅 1丁小凤 2赵春江 2梁建国 3张国庆4
作者信息
- 1. 太原科技大学 材料科学与工程学院,山西 太原 030024
- 2. 太原科技大学 山西省冶金设备设计及技术重点实验室,山西 太原 030024
- 3. 太原理工大学机械交通工程学院,山西 太原 030024
- 4. 太原磬泓机电设备有限公司,山西太原 030024
- 折叠
摘要
目前,采用三辊斜轧穿孔的大规格薄壁镁合金管容易出现尾三角.因此,本文提出采用二辊锥辊穿制坯料直径为110 mm的大规格AZ31 镁合金薄壁无缝管的方法.分析了二辊和三辊斜轧穿孔的原理,根据镁合金材料的特点,制定了相应的变形工艺参数,并采用Deform-3D有限元软件对整个过程进行了数值模拟.分析了等效应变、轧制速度、等效应力等结果.模拟结果表明,管形均匀,尾部截面圆整.
Abstract
At present,the three-roll cross-rolled perforated large-sized thin-walled magnesium alloy tubes are prone to form tail triangles.Therefore,a method of large-size AZ31 magnesium alloy thin-walled seamless pipes produced with a billet diameter of 110 mm by using two cone rolls was proposed.The principle of two-roll and three-roll cross-rolling piercing was analyzed.According to the characteristics of magnesium alloy materials,the corresponding deformation process parameters were formulated,and the whole process was numerically simulated by Deform-3D finite element software.The results of equivalent strain,rolling speed,and equivalent stress were analyzed.The simulation results show that the tube shape is uniform and the tail section is round.
关键词
大规格AZ31镁合金/无缝管/尾三角现象/二辊锥辊斜轧穿孔Key words
large-sized AZ31 magnesium alloy/seamless tube/tail triangle phenomenon/two-cone-roll skew-rolling piercing引用本文复制引用
基金项目
山西省科技重大专项(20191102009)
山西省重点研发计划(201903D121049)
出版年
2024
NETL
NSTL
万方数据