不同热塑性蜡基粘接剂对316L注射成型件性能的影响（英文）  

Effects of Different Thermoplastic Wax-based Binders on Properties of 316L Stainless Steel Injection Molding Parts

作　　者：豆亚坤 凤仪[1] 黄晓晨[1] 汤海[1] 丁冬冬[1] 田沛 夏梦 钱刚[1] 张学斌[1] 

机构地区：[1]合肥工业大学,安安合肥230009

出　　处：《稀有金属材料与工程》2017年第10期2775-2780,共6页Rare Metal Materials and Engineering

基　　金：National High-Tech Research and Development Program of China("863"Program)(2013AA051402)

摘　　要：用金属注射成型方法研究3种热塑性蜡基粘接剂(高密度聚乙烯、高密度聚乙烯/聚丙烯、聚丙烯)对316L不锈钢尺寸稳定性及机械性能的影响,并对3种热塑性蜡基粘接剂溶剂脱脂过程进行了分析。结果表明,用高密度聚乙烯/聚丙烯热塑性蜡基粘接剂得到的316L不锈钢注射成型件尺寸稳定性及机械性能较好,溶剂脱脂时间较短、效果较好,其长、宽、高三维尺寸稳定性比聚丙烯热塑性蜡基粘接剂得到的注射成型件分别高46%,40%,20%,密度、HRB硬度和抗拉强度分别为7.28 g/cm^3、723 MPa和579 MPa。A thorough understanding of thermoplastic polymer in the wax-based binder is essential for ensuring the dimensions and mechanical properties of 316 L stainless steel metal injection molding parts. The effects of three thermoplastic polymers, high density polyethylene, high density polyethylene/polypropylene and polypropylene, on the dimensions and mechanical properties of 316 L stainless steel metal injection molding parts have been compared. The tensile bars were tested to examine the dimensions and mechanical properties of sintered parts against different thermoplastic polymers in the binder. Among the three thermoplastic polymers in the binder considered herein, high density polyethylene/polypropylene performs better than others in solvent debinding stage and in terms of the metal injection molding compact quality. High density polyethylene/polypropylene has significantly increases the stabilities of length, width and thickness by up to 46%, 40%, 20%, respectively. The density, hardness and tensile strength of the sintered parts are 7.28 g/cm^3, 72.3 HRB and 579 Mpa, respectively.

关 键 词：热塑性 金属注射成型 316L不锈钢 机械性能 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TQ437[金属学及工艺—金属材料]