【摘要】 基于连续介质理论,应用有限元软件ANSYS的FLOTRAN流体分析模块,对金属粉末注射成形过程进行了模拟分析,揭示了金属粉末注射成形时喂料流动填充型腔的速度、压力随注射时间变化而变化的关系;得到了注射压力对充填时间和型腔压力的影响规律,确定了最佳的充模时间;分析了不同浇口位置注射时注射件关键单元的流动速度和压力分布,预测了注射件的成形质量,提出了防止注射件缺陷产生的措施,优化了浇口设置。更多还原

【Abstract】 This paper introduced the control equation, consti tutive equation and related rheologic theories of continuous medium model and the used FLOTRAN modul e of the finite element software ANSYS. Find the law of the influence from the i njection pressure to the filling time and the cavity pressure and make certain o f the best filling time, injection time and injection pressure. Though the analy sis of the flowing velocity and pressure spread of the key position element in t he injection parts in different gate position, we forecast the injection parts q uality and provide the theory guidance for the possibility of how to control inj ection flaw, optimize the gate position.更多还原