Transactions of Materials and Heat Treatment

Title：Design on isothermal die forging billet for 5A06 aluminum alloy ring connecting frame and process validation

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ClassificationCode：TG316. 3

year,vol(issue):pagenumber：2023,48(1):29-46

Abstract：

The forming process of 5A06 aluminum alloy ring connecting frame was studied by finite element simulation software Deform,and the forming process model of vertical rib folding was established. Then, the influence laws of shape and size for billet on rib top folding, forming speed uniformity and forming speed were analyzed, and the process verification was carried out. The results show that the top folding is easy to occur at the position of high forming speed for billet with the same shape as the forgings. With the decreasing of billet contour size, the uniformity for the forming speed of forgings rib and the overall forming speed reduce, the equivalent strain at the web increases, the folding degree of rib top does not change much at the position with fast forming speed and straight rib, but decreases at the rib with slow forming speed, and the folding degree of rib top at the turning rib is intensified due to the flow phenomenon of side wall. For the position with slow forming speed and inflection, the two influences of the slow forming speed resulting in the reduction of folding degree and the side wall flow resulting in the aggravation of folding degree compete with each other. The influence of the side wall flow phenomenon gradually dominates with the increasing of the distance between billet edge and outer wall of die, which aggravates the folding.

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作者简介: 王　斌(1976-), 男, 博士, 研究员 E-mail: 15601287047@ 163. com 通信作者: 宗影影(1980-), 女, 博士, 教授 E-mail: hagongda@ hit. edu. cn

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