摘要
从机理上对浮游精炼法进行了理论分析,认为增加熔剂量可以提高除气效果,但过量的熔剂又可能会给铝液带来二次反应夹杂;[H]含量达到平衡浓度前,增加除气时间可以提高除气效果;随着静置时间的延长,[H]含量有一个先减少后增大的趋势。采用旋转吹气-熔剂法净化铝液,以净化后铝液的[H]含量为考察目标,按照均匀理论设计了净化参数的多因子实验。对实验结果进行逐步回归和线性回归分析,确定了旋转吹气-熔剂法工艺规范:精炼剂加入量0.2%;除气时间10 min;静置时间15 min。
Based on the mechanism analysis of floating refinement, it＇s concluded that the increase of flux quantity can improve degassing effect; however, the excess flux probably results in secondary reaction inclusion in liquid aluminum; the increase of degassing time can improve degassing effect before the equilibrium concentration of H is reached; and H content decreases first and then in- creases with the prolongation of stewing time. In order to determine the H content in liquid aluminum after purification by rotary blowing-flux method, a multi-factor experiment for purification parameters was designed according to uniform design theory. The rotary blowing-flux process specifications were determined based on the stepwise regression and linear regression analyses of the experimental results： the addition of the refining flux is 0.2%, the degassing time 10 min and stewing time 15 rain.
出处
《火箭推进》
CAS
2010年第5期44-49,共6页
Journal of Rocket Propulsion
