椎间融合器金属粉末注塑成型工艺参数实验研究.docVIP

椎间融合器金属粉末注塑成型工艺参数实验研究 边慧光，胡纪全*，刘营，田晓龙，汪传生，杨洪于，孙作栋 （机电工程学院，青岛科技大学，青岛 266061） 摘要：通过密炼机混炼出不同比例金属粉末与粘结剂的金属喂料，对不同配比的金属喂料进行喂料流动性能对比实验，得到最佳注塑成型实验所用的最佳喂料配方，不锈钢粉末占不锈钢喂料质量分数为92.6%时，不锈钢喂料综合性能较好；Investigation of Technological Parameters for Intervertebral Fusion Cage Made by Metal Powder Injection Molding BIAN Hui-guang, HU Ji-quan, LIU Ying, TIAN Xiao-long, WANG Chuan-sheng, YANG Hong-yu, SUN Zuo-dong (College of Mechanical and Electrical Engineering, Qingdao University of Science and Technology, Qingdao 266061) Abstract: Metal feed contained different proportion of metal powder and binder were prepared by mixer mixing, and its flow properties were determined and compared to get optimal feed formula needed for optimum sintering temperature. The result showed that stainless steel feed comprehensive performance is the best, when the content of stainless metal powder in stainless steel feed was 92.6%. Performance of intervertebral fusion cage with optimum feed formula was tested on precise injection molding machine. Intervertebral fusion cage was injected with different feed temperature, mold temperature and injection pressure, and weight test results and injection time were recorded to get the optimum technological parameters. The result indicated that intervertebral fusion cage performed best when the mold temperature was 50 °C, injection pressure was 70 MPa, feed temperature was 180 °C, four heating section was used for injection temperature, and the temperature of the each section was 180, 175, 170 and 165 °C, respectively. Key words: metal powder; injection molding; stainless steel; intervertebral fusion cage; technological parameters 金属粉末注塑成型(Metal Injection Molding，简称MIM)是一种将粘结剂和金属粉末混合后得到的增塑混合料注射到特定模具的一种成型加工方法[]；MIM是一种由粉末冶金与聚合物注塑成型相结合发展起来的一种新型成形技术[] 。一些体积较小、外形复杂且用量较大的金属制品很难用传统加工手段大批量生产，在众多复杂金属制品中，人体物用可植入椎间融合器属于其中一种，椎间融合器由于外形极其复杂，加工周期长，成本高，所以在医疗行业中，对于需要做手术移植椎间融合器的病患者需要的费用相对较高。 本文研究配制了蜡与油混合基喂料配方，通过对不同配比的金属喂料进行喂料流动性能对比实验，确定了该实验所用配方；通过对椎间融合器模具进行注射工艺参数实验研究，确定该金属喂料配方在椎间融合器模具上的最