速度等高线法优化喷射成形棒坯的形状控制参数  

Optimization of spray-forming rod condition by contour line

作　　者：霍光[1] 邓德国[2] 谢明[2] 郑福前[2] 

机构地区：[1]昆明理工大学材料与冶金工程学院,昆明650093 [2]昆明贵金属研究所,昆明650221

出　　处：《中国有色金属学报》2005年第8期1253-1261,共9页The Chinese Journal of Nonferrous Metals

基　　金：云南省自然科学基金资助项目(1999E0007Z);云南省省院省校科技合作资助项目(2001ABBEA00A006)

摘　　要：提出并建立了喷射成形棒坯的沉积速度等高线模型,利用计算机数值模拟技术计算了喷射成形空间质量流率分布,找到了沉积器的最佳位置zm与最佳回缩速度v的关系,分析了不同空间位置对沉积坯端面的影响。采用二维坐标跟踪计算了沉积坯的形貌,计算的结果与实际喷射成形铝硅合金棒坯进行了比较,实验结果与预测得到了较好的吻合。A contour line model was presented for finding the relation between the substrate position （zm） and withdrawal velocity. The droplet flow rate in space during spray forming was analyzed by numerical calculation. The relation between optimum position （zm） and withdrawal velocity was obtain by the contour line model. The influence of substrate position to the rod surface shape were analyzed. A two dimensional model was formulated to calculate the shape of the rod through tracing surface coordinates of the rod. The calculated surface profiles were compared with those of spray-formed Al-Si alloy rods prepared on a pilot scale. The calculated results for the surface profiles were in agreement with those of the spray-formed rods.

关 键 词：等高线模型 喷射成形 棒坯 数值模拟 喷射质量流率 

分 类 号：TF124.39[冶金工程—粉末冶金] TB115[冶金工程—冶金物理化学]