Transactions of Materials and Heat Treatment

Title：Optimization of extrusion mold structure for AZ91D magnesium alloy radiator profiles

Authors： Huang Dongnan Wu Nan Dong Ruifeng Sun Lei Shen Haochen

Unit： 1. CHINALCO Materials Application Research Institute Co. Ltd. 2. School of Materials Science and Engineering Inner Mongolia University of Technology

KeyWords： magnesium alloy radiator profiles diversion plate diversion angle extrusion mold finite element simulation

ClassificationCode：TG316

year,vol(issue):pagenumber：2019,44(10):131-138

Abstract：

Large extrusion pressure is required for the extrusion of profile with complex section，and the working belt of mold is easy to be damaged. For the above problems, a diversion plate was added before the working belt, and three kinds of mold with different diversion angles of 25°, 20°, 15° were designed respectively. Then, their extrusion processes were numerically simulated by finite element simulation software Deform-3D respectively, and the distributions of temperature field and velocity field for extrusion profile section under different diversion angles were compared. The results show that the distribution of temperature and velocity for extrusion profile section is uneven under diversion angle of 20° and 15°, and the distribution of temperature and velocity for extrusion profile section is uniform under diversion angle of 25°. Furthermore, the extrusion processes for two kinds of mold with diversion angle of 25° and 15° were tested respectively. The results show that the qualified radiator profile is extruded by mold with diversion angle of 25°, and the surface quality of extrusion profile is poor by mold with diversion angle of 15°.

Funds：

国家自然科学基金资助项目（51364027）

作者简介：黄东男（1979-），男，博士，教授 E-mail：dongnan_2000@163.com

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