有色金属科学与工程Issue(1)：29-34,6.DOI:10.13264/j.cnki.ysjskx.2015.01.006
利用超重力分离5052铝合金熔体中的非金属夹杂
Application of super gravity to separating non-metallic inclusions from 5052 aluminum alloy melt
摘要
Abstract
Super-gravity segregation performed on self-designed centrifugal furnace is applied to separate non-metallic inclusions in molten aluminum under various gravity fields. The results show that the oxide inclusions are accumulated to the bottom of samples by super-gravity treatment. The level of inclusions aggregation became more remarkable with the increasing of super-gravity field. The settling rate of inclusions at the bottom of the sample is 0.35 after 5 minutes treatment under conventional gravity , while the settling rate of inclusions is 0.99 under super-gravity with G=250. According to the Stokes’ law, the terminal velocity reaches at a very early stage of the process (when G=1,νr is 7.25×10-5 m/s). However,when G=250 m/s,νr reaches 1.813×10-2 m/s, which indicates the terminal velocity increases exponentially with adding gravity coefficient. Hence, the non-metallic inclusions can be separated effectively under super-gravity fields.关键词
超重力/铝合金熔体/非金属夹杂/分离Key words
super-gravity/aluminum alloy melt/non-metallic inclusions/separation分类
矿业与冶金引用本文复制引用
宋高阳,宋波,杨玉厚,贾树建,李军成,辛文彬..利用超重力分离5052铝合金熔体中的非金属夹杂[J].有色金属科学与工程,2015,(1):29-34,6.基金项目
国家自然科学基金资助项目 （）
