6061铝合金管材内壁加工缺陷成因分析  

Cause analysis on manufacturing defect of of 6061 aluminum alloy pipe inner wall

作　　者：李僜谚 黄启波 冯旺 孙娜 李霜 Li Dengyan;Huang Qibo;Feng Wang;Sun Na;Li Shuang(Southwest Aluminum(Group)Co.,Ltd.,Chongqing 401326,China)

机构地区：[1]西南铝业(集团)有限责任公司,重庆401326

出　　处：《铝加工》2021年第4期40-43,共4页Aluminium Fabrication

摘　　要：通过对不同工序管材样品内壁的宏观、微观等综合分析研究,探明了6061合金管材样品加工后掉屑现象是因内壁质量不良引起,是管材内壁拉痕较多,加工时拉痕部位受到应力拉裂掉落铝屑且在加工后内壁圆周面形成的粘铝现象。同时,在分析缺陷成因的基础上,提出了解决问题的思路和方向。Through the comprehensive analysis and study of the inner wall of the pipe samples in different processes,it is proved that the chip dropping phenomenon of 6061 alloy pipe samples after processing is caused by the poor quality of the inner wall,and there are many drawing marks on the inner wall.The drawing marks are subjected to stress and cracking during processing,and aluminum chips fall off and aluminum sticks on the inner wall surface after processing.The inner wall quality of the finished pipe can be improved and the yield can be increased by reducing the deformation of each drawing or increasing the intermediate annealing process.

关 键 词：6061铝合金 挤压 管材 内壁 缺陷 

分 类 号：TG376[金属学及工艺—金属压力加工]