Transactions of Materials and Heat Treatment

Title：Processing practice on rolling and shearing of small size product for 5154 aluminum alloy

Authors： Wang Tonggang Yang Song

Unit： Xinxiang Vocational and Technical College North China Institute of Aerospace Engineering Tianjin University of Technology and Education

KeyWords： rolling shearing 5154 aluminum alloy rolling force shearing force

ClassificationCode：TG335

year,vol(issue):pagenumber：2022,47(8):146-151

Abstract：

For the problems of low production efficiency and easy generation of shrinkage holes, cracks and other defects in the casting process for 5154 aluminum alloy small-size products, a rolling and shearing processing method was proposed. In order to achieve multiple rolling under the protective atmosphere in a confined space, a single-groove and multi-pass roller was adopted. According to the principle of equal reduction rate, the total number of rolling times was set to six passes, and the reduction rate of each pass was calculated to be 27%, so as to determine the reduction amount of each pass. According to the physical properties, reduction amount and other influencing factors of 5154 aluminum alloy, it is calculated that the rolling force that the system needs to provide is 1195600 N, and the rolling torque is 71721 N·m. The test results show that the slab is in good shape without buckling, arching, waves, side bending and other sheet shape defects. According to the size requirements of the final product, the shearing mechanism with the coordinated movement of transverse and longitudinal double shear blades was designed, and the required shearing force was calculated to be 123120 N by reference to the shear strength. The optimal shearing scheme was determined by comparing the states of the products obtained from the two shearing schemes. Thus, the final product meets the requirement of less than 9 mm×45 mm specified in the technical regulations, which effectively solves the problems existing in the production.

Funds：

天津市自然科学重点基金项目（16JCZDJC38200）

作者简介：王同刚（1978-），男，硕士，副教授，E-mail：wtg613@163.com

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