Experimental studies on the characteristics of AA6082 flow formed tubes
Experimental studies on the characteristics of AA6082 flow formed tubes
复制标题
AA6082旋压管特性的实验研究
DOI：
10.5897/jmer11.063
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
P. Rao
中科院分区：
文献类型：
--
作者：
M. Srinivasulu;M. Komaraiah;C. S. Krishna;P. Rao
流动成形是一种创新的、无切屑的金属成形工艺，用于制造薄壁无缝管和其他轴对称部件。在单辊式数控旋压机上对退火后的AA 6082铝合金管状预成形件进行了薄壁无缝管成形试验。本调查所选择的工艺参数是辊半径，芯轴速度，辊进给，厚度减少，等的特性选择的流动成型管的椭圆度，平均直径，厚度变化，表面光洁度等，这些工艺参数的影响流动成型管的尺寸特性和表面质量进行了研究。提出了最佳的工艺参数，以制造出具有良好尺寸特性和表面质量的管材。已经发现，4至8 mm的辊半径、30至35%的厚度减小范围、150 rpm的心轴速度和100至130 mm/min的辊进给范围形成具有良好特性的管。
关键词：流动成形，AA 6082合金，椭圆度，平均直径，表面质量。
Flow-forming is an innovative, chip less metal forming process used to manufacture thin walled seamless tubes and other axi-symmetric components. Experiments were conducted to form annealed AA6082 alloy tubular pre-forms into thin walled seamless tubes on CNC flow forming machine with a single roller. The process parameters selected for the present investigation are roller radius, mandrel speed, roller feed, thickness reduction, etc. The characteristics of flow formed tube chosen are ovality, mean diameter, thickness variation, surface finish, etc. The effects of these process parameters on the dimensional characteristics and surface quality of flow formed tubes have been studied. The optimum process parameters are proposed to manufacture the tubes with good dimensional characteristics and sound surface quality. It has been found that, roller radius of 4 to 8 mm, thickness reduction ranging from 30 to 35%, mandrel speed of 150 rpm and roller feed in the range of 100 to 130 mm/min formed the tubes with sound characteristics.
Key words: Flow-forming, AA6082 alloy, ovality, mean diameter, surface quality.