Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第15卷    第8期    总第77期    2005年8月

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文章编号:1004-0609(2005)08-1253-09
速度等高线法优化喷射成形棒坯的形状控制参数
霍 光1, 2, 邓德国2, 谢 明2, 郑福前2

(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
)

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。

 

关键词:  等高线模型; 喷射成形; 棒坯; 数值模拟; 喷射质量流率

Optimization of spray-forming rod condition
by contour line
HUO Guang1, 2, DENG De-guo2, XIE Ming2, ZHENG Fu-qian2

1. School of Materials and Metallurgical Engineering,
Kunming University of Science and Technology, Kunming 650093, China;
2 Kunming Institute of Precious Metals, Kunming 650221, China

Abstract: 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.

 

Key words: contour line model; spray forming; rod; numerical calculation; spray mass flow rate

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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