文献类型：会议论文

英文题名：Study on the Semi-Solid Thixo-diecasting Process of Aluminum Alloys and Die Design

作者：Shang Shuzhen[1];Wang Jiaojiao[1];Lu Guimin[1];Tang Xiaoling[1]

机构：[1]E China Univ Sci & Technol, Minist Educ, Key Lab Pressure Syst & Safety, Shanghai 200237, Peoples R China

会议论文集：12th International Conference on Semi-Solid Processing of Alloys and Composites (S2P 2012)

会议日期：OCT 08-11, 2012

会议地点：Cape Town, SOUTH AFRICA

语种：英文

外文关键词：Semi-solid Al6061 alloy; Numerical simulation; constitutive equation; inner-casting size

摘要：The constitutive equation of semi-solid 6061 alloy was established according to the thermal simulation compression tests of semi-solid billet of 6061 alloy prepared by near-liquids semi-continuous casting method. Parameters of Bingham model, such as apparent viscosity, had been investigated based on the constitutive equation of semi-solid 6061 alloy. The software ANYCASTING was applied to simulate and analyze the semi-solid die-casting processes of semi-solid 6061 alloy. A well-designed runner and gating system of automobile aluminum alloy part were presented and the casting defect were investigated here utilizing these parameters by simulation. The results show that a well-designed runner and gating system is very important to secure good quality die castings through providing a homogenous mould filling pattern. Most defects of semi-solid casting products can be founded in the final solidification of the parts of casting.