316L不锈钢粉末微注射成形的烧结过程有限元模拟研究  

Finite element simulation of sintering process of 316L stainless steel powder injection molding

作　　者：孔祥吉[1] 刘超[1] 况春江[1] 顾虎[1] 王凡[1] 

机构地区：[1]安泰科技股份有限公司,北京100081

出　　处：《粉末冶金工业》2017年第6期27-33,共7页Powder Metallurgy Industry

基　　金：北京市特种粉末冶金材料工程技术研究中心资助项目(2014DFA50220)

摘　　要：金属粉末微注射成形技术(Micro MIM)在大规模生产微型产品领域有其特有的优势。将316L不锈钢细颗粒粉末进行混料、脱粘和烧结后制备了微型工件,对烧结过程进行数学建模得出注射料的本构方程,并对剪切黏稠度、体黏稠度、烧结应力等参数进行标定,实现了对316L不锈钢粉末烧结过程中的收缩率、相对密度等的有限元模拟,模拟结果与实验数据吻合良好。The micro metal injection molding（Micro MIM）technology has its unique advantages in the field of large-scale production of micro products. The feedstock based on fine 316L stainless steel powders was injected,debinded and sintered to manufacture tiny specimens. The constitutive behavior law of the feedstock based on fine 316L stainless steel powders was deduced,and the parameters such as shear viscosity,bulk viscosity and sintering stress were identified using Matlab？software. Finally,the shrinkage and relative density of 316L stainless steel powder during sintering were simulated by finite element method. The simulation results are in good agreement with the experimental data.

关 键 词：316L不锈钢 金属粉末微注射成形 烧结 有限元模拟 

分 类 号：TF124.39[冶金工程—粉末冶金]