【摘要】 通过对A356合金旋转喷吹精炼工艺的正交试验,分析了影响旋转喷吹精炼工艺的3个因素,包括喷头转速、氮气通入量、精炼除气时间.试验结果表明:影响旋转喷吹精炼工艺的因素依次为喷头旋转速度>氮气通入量>精炼除气时间;最佳的旋转喷吹精炼工艺参数为喷头转速1200 r/min、氮气流量3.0 Nm~3/h、除气时间12 min,在此工艺参数条件下精炼除气效果最佳.更多还原

【Abstract】 Based on the orthogonal test of A356 alloy rotary jet refining process, three factors affecting the process were analyzed, including nozzle rotation speed, nitrogen flow rate and refining degassing time. The test results showed that the factors influencing the process in turn were nozzle rotation speed, nitrogen flow rate and refining degassing time. Through the orthogonal test and verification test, it was found that the most important factor affecting the process was nozzle rotation speed, nitrogen flow rate and refining degassing time The best technological parameters of rotary jet refining are nozzle speed 1200 r/min, nitrogen flow 3.0 Nm~3/h and degassing time 12 min. under these technological parameters, the degassing effect is the best.更多还原