Mold-filling ability of semisolid alloy
Mold-filling ability of semisolid alloy作者机构:DepartmentofmechanicalengineeringNorthernJiaotongUniversityBeijing100044China DepartmentofmechanicalengineeringTsinghuaUniversityBeiiing100084.China
出 版 物:《Journal of University of Science and Technology Beijing》 (北京科技大学学报(英文版))
年 卷 期:2002年第9卷第4期
页 面:253-257页
核心收录:
学科分类:080503[工学-材料加工工程] 08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程(可授工学、理学学位)] 0802[工学-机械工程] 080201[工学-机械制造及其自动化]
主 题:semisolid alloy semisolid processing mold-filling ability aluminumalloy
摘 要:The mold-filling ability of the semisolid alloy has very important effects onthe quality and properties of the work pieces produced by the semisolid forming process. Thefactorial experiments show that all of the heating factors, such as mold temperature, heatingtemperature and the keeping time of billets, have some effects on the mold-filling ability ofsemisolid alloy. According to the analysis of influencing extent on the filling ability, it is foundthat the most important one of the factors is the mold temperature instead of the billetstemperature, the next one is the heating temperature of the billet, and the keeping time rows on thethird. It is also found that there is an interrelation between the billet heating temperature andthe mold temperature. The effect of the interrelation on the mold-filling ability is even strongerthan the keeping time. The higher the mold temperature, heating temperature or the keeping time is,the better the mold-filling ability of the semisolid alloy is. The parameter to describe themold-filling ability, defined as the maximum filling height along the uptight direction or themaximum filling length along the horizontal direction, can be theoretically determined according tothe flowing theory of viscous fluid.