基于传统电阻加热烧结过程的建模与模拟,通过对粉末注射成形材料微波烧结过程的机理分析,结合电磁场、热力学以及连续介质力学原理,确定了微波烧结全过程的数学模型和模拟方法;通过建立合理的力学模型和控制方程,采用COMSOL Multi-physics软件模拟微波烧结过程,并将模拟结果与试验结果进行了对比。结果表明:氧化锆粉末成形件在微波烧结初始阶段加热缓慢,当温度升至400 ℃之后,成形件内部温度持续急剧升高;当加热至1 360 ℃时,烧结件的相对密度高达92%,可满足粉末烧结工艺要求;建立的数学模型能有效模拟微波烧结过程中粉末成形材料内部的电场、温度场分布以及密度的衍化过程。
所属栏目
物理模拟与数值模拟教育部博士点基金资助项目(20110184110017)
收稿日期
2013/7/42014/5/5
作者单位
石建军:西南交通大学力学与工程学院,成都 610031Femto-ST 研究所应用力学实验室,法国贝桑松 25000
成志强:西南交通大学力学与工程学院,成都 610031
GELIN J C:粉末注射成形材料微波烧结过程的有限元模拟
柳葆生:西南交通大学力学与工程学院,成都 610031
BARRIERE T:粉末注射成形材料微波烧结过程的有限元模拟
备注
石建军(1985-),男,广西梧州人,博士研究生。
引用该论文:
SHI Jian-jun,CHENG Zhi-qiang,GELIN J C,LIU Bao-sheng,BARRIERE T.FEM Simulation of Microwave Sintering Process for Powder Injection Molding Materials[J].Materials for mechancial engineering,2014,38(11):84～89
石建军,成志强,GELIN J C,柳葆生,BARRIERE T.粉末注射成形材料微波烧结过程的有限元模拟[J].机械工程材料,2014,38(11):84～89
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