Ti-6Al-4V合金喂料临界粉末装载量的研究
Research on Critical Powder Loading for Ti-6Al-4V Alloy Feedstocks
王家惠
点击：2311次 下载：0次
作者单位：云南昆明理工大学城市学院
中文关键字：粉末注射成形； 钛合金；临界粉末装载量；流变特性
英文关键字： powder injection molding, titanium alloy, critical powder loading；rheological property
中文摘要：本文研究了4种不同蜡基粘结剂配方下钛合金喂料的临界固体粉末含量，并测试了临界固体粉末含量下喂料的流变学参数。实验结果表明：1#喂料（100%PW）、2#喂料（95%PW+5%SA）、3#喂料（70%PW+25%LDPE+5%SA）、4#喂料（60%PW+35%LDPE+5%SA）的临界粉末装载量分别为：70vol.%，71.53 vol.%，72.24 vol.%，73.02 vol.%；经流变学分析，临界粉末装载量下喂料仍呈假塑性流体，但其流动指数n值较小，在0.2以下，不利于成形。
英文摘要：This paper investigated the critical powder loading of Ti-6Al-4V alloy feedstocks with four different wax-based binders, and rheological measurements of feedstocks at critical powder loading were performed in a capillary rheometer. The results showed that the critical powder loadings of 1# feedstock(100%PW), 2# feedstock(95%PW+5%SA), 3# feedstock(70%PW+25%LDPE+5%SA), 4# feedstock(70%PW+25%LDPE+5%SA) was 70vol%，71.53 vol%，72.24 vol%，73.02 vol%, respectively. Through rheological analysis, we finded that the feedstocks at critical powder loading were pseudo plastic fluid, but flow index of feedstocks was lower than 0.2, not conducive to forming.