摘要
研究了铝合金压力铸造中水基脱模剂喷涂压铸模具时的液滴速度分布特征.脱模剂喷涂过程可简化为圆形湍流射流和雾化过程,雾化的脱模剂液滴在射流径向方向直径大小以及液滴速度影响了模具表面的冷却强度.根据流体力学的能量和动量方程,推导出脱模剂液滴在(x,r)处的速度与该x截面的最大速度之比,并引用其他研究者的实验数据对该结果进行了验证.其结果表明,实验数据与本文结果吻合良好,采用紊流射流原理可以分析脱模剂喷涂过程的某些物理特点.
The features of droplet velocity distribution of water based die releasing agent in A1 alloy die casting engineering were studied. The die spraying course can be simplified in round torrent jet and atomization, The cooling strength of die surface is influenced by the droplet diameter and velocity distribution along the radial direction of atomized die releasing agent. On the basis of energy equation and momentum equation, the ratio of droplet velocity u （x, r） to the maximum velocity umax in x section of die releasing agent was concluded, which was checked, by another researchers experimental data. The results show that the concluding data accords to the experimental data well, and some physical features in die spraying are explained by the theory of round torrent jet.
出处
《山东大学学报（工学版）》
CAS
2006年第5期1-4,共4页
Journal of Shandong University（Engineering Science）
关键词
脱模剂
喷涂
速度分布
压铸模具
压力铸造
releasing agent
spraying
velocity distribution
die casting die
die casting
