چکیده مقاله
This In manufacturing industries processing, the fast de binding of binders in metal injection molding MIM is required In this paper, the shape retention properties and the step by step fast de binding process of the wax based binder of multi polymer component PW HDPE binder are studied and compared to those of the wax based binder of mono polymer component binders A systematic considerate of thermoplastic polymer in the wax based binder is necessary for ensuring the dimensions and mechanical properties of 316L stainless steel metal injection molding parts Metal injection molding MIM is considered as a novel technology for producing metal parts with complex geometry The present work is focused on producing a homogeneous SS 316L feedstock for MIM process by optimizing chemical properties of polymeric and surfactant material Homogeneity of the feedstock was evaluated by DSC and TGA test The results reveal the injection molding temperature should be set above 138 œC in order to improve the rheological properties of feedstock and decrease the degradation of the binder, and the mold temperature should be set below 60 œC Backbone polymer in the binder start degrading at 360 œC until 550 œC, which indicates that in the thermal de binding stage, the temperature should exceed 550 œC Optimum fractional final density of 97 13% of wrought material was achieved with a sintering temperature of 1350 œC, a heating rate of 20œC min−1 and isothermal heating at 1350 œC for 90 min in a vacuum atmosphere
کلیدواژهها
نویسندگان
M Moradjoy
PhD Candidate, Faculty of Material Science and Engineering, K N Toosi University of Technology,Tehran,Iran
H Khorsand
Associated Professor, Faculty of Material Science and Engineering, K N Toosi University of Technology,Tehran,Iran
شیوه ارجاع
Moradjoy, M and Khorsand, H,1399,Binder Wax base with different chemical composition for fast de-binding processing of Metal Injection Molding parts,17th National Conference and 6th International Conference on Manufacturing Engineering,Tehran
ارائهشده در
مجموعه مقالات هفدهمین همایش ملی و ششمین کنفرانس بین المللی مهندسی ساخت و تولید12 اسفند 1399 · تهران