MEP-02: The Effect of Ultrasonic Vibration for the Machining with Non-rotating Tool(MEP-I: MECHANICAL PROCECCING)

Abstract

The JapanSociety of Mechanical Engineers ing of four finger 7075 allo)fs. Different d]e materials: preheated toel steel (N 250eC), graphite and no+asbestos Sindanyo*. The solid-cation behavieur was etcamined by numerTcal finite element model. The moclel was to previde the temperature distribution during soEidificatien, to lecate the shrinkage petosity, and te estimate the proper ejection time of the semi-solid procluct. The results show thet thixoformed 7075 proclucts predueed by using Sindanyo die have the hlghest tensi]e properties due to the minim"m ef heat foss dur;ng solidification, resulting in cervv pletely die filling before solidification and the ending ef freexing at the gate. * Sindanyo grade H61 has a substr2te of hlgh Alumina cement w;th selected fihres to give goed strength at e]evated temperature.