Transactions of Materials and Heat Treatment

Title：Flatness analysis and control on aluminum 1060 cold extrusion rectangular tube

Authors： Yu Mingxi Wang Jiaxuan Sun Jianbo

Unit： Nanchang Hangkong University Weihi Haian Yacht Manufacturing Co. Ltd.

KeyWords： cold extrasion aluminum 1060 thin-walled rectangular tube flatness of tube walli die gap

ClassificationCode：TG376

year,vol(issue):pagenumber：2016,41(9):135-138

Abstract：

The extruded tubular member or pipe is often produced with distortion on the wall, which

influences the appearance quality of product, and the flatness requirement leads to low yield

of parts. The forming process of aluminum 1060 thin-walled rectangular tube was simulated by

the Deform-3D software, and the influence factors were analyzed to provide a reference for the

die design and production technology. Experiments were conducted with solid powder lubricant

by 2000 kN hydraulic equipment at 20 ℃, and saponification on blanks was required before the

experiment. Comparing the extrusion parts with the simulation parts and measuring the wall

thickness, it is found that flatness is poor and the surface is uneven. The relative position

between upper and lower die is altered, and the center of upper die deviates 0.2 mm left

towards the center of lower die to get an uneven gap between upper and lower die. The

simulation results show that an uneven gap between the upper and lower die is an important

factor related to the uneven thickness and flatness of the wall, while the extrusion rate has

little effect on the flatness of the wall. Therefore, the study provides a reference for the

actual production and installing accuracy of molds.

Funds：

余明喜（1992-），男，硕士研究生王家宣（1956-），男，硕士，教授

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