Influence of Axial Feeding on Hydroforming of Aluminum Alloy Tubular Part with Rectangular Section

• 作 者: 宋鹏 王小松
• 机 构: School of Materials Science and Engineering,Harbin Institute of Technology,
• 出 处: Journal of Wuhan University of Technology(Materials Science
• 发表日期: 2009年S1期
• 关键词: corner calibration lubricant hardness feeding rectangular tubular radius axial e

The hydroforming experiment of aluminum tubular part with rectangular section was carried out to investigate influence of axial feeding on thickness distribution and calibration pressure of the corner.Thickness distribution and relation between corner radius and internal pressure were analyzed.The influence of lubricant was discussed.Microstructure and hardness of different region were observed.It is shown that thickness reduction in the transition region between the corner and center region is the biggest.Friction condition has influence both on the thickness distribution and calibration pressure of the corner.As the increase of the axial feeding,the calibration pressure is decreased.There is only little change for the microstructure,but the hardness is increased by 23.3% for the transition region.

The hydroforming experiment of aluminum tubular part with rectangular section was carried out to investigate the influence of axial feeding on thickness distribution and calibration pressure of the corner. Thickness distribution and relation between corner radius and internal pressure were analyzed. The influence of lubricant was discussed. Microstructure and hardness of different regions were observed. It is shown that thickness reduction in the transition region between the corner and center region is the biggest. Friction condition has influence both on the thickness distribution and calibration pressure of the corner. As the increase of the axial feeding, the calibration pressure is decreased. only is little change for the microstructure, but the hardness is increased by 23.3% for the transition region.