本文研究了雾化压力、导液管的几何形状和相对位置以及雾化介质等因素对雾化过程导液管末端气体射流与金属液流作用区压力特征的影响规律。结果表明,适当提高雾化压力,降低导液管的位置以及减小导液管的锥角,将趋向于在导液管末端形成负压,对金属熔体造成有效的吸动作用 对增压(正压)和吸动(负压)现象形成的机理以及雾化过程的最大正压条件作了分析和讨论。
Effect of key operation parameters, such as gas inlet pressure, geometrical de-sign and relative position of metal delivery tube, atomization gas, etc., on the overpressureand / or underpressure in the gas-metal interaction zone at the tip of metal delivery tube ori-fice has been experimentally investigated. It was found that to properly raise the atomizingpressure, to lower the position and to reduce the cone angle of delivery tube may produce anegative pressure at the tip of delivery tube, thus, the aspiration for injection of molten metalwill be more effective. The formation of pressurization and aspiration, as well as the criticalpressure condition for gas atomization process were proposed and discussed.
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