摘要
研究了水雾化工艺参数对Cu-0.3La预合金粉末的粒度分布、松装密度、流动性等物理性能的影响。结果表明:保持其它雾化参数不变,适当的提高高压水压力和熔融合金温度,均能使粉末细粉量增加、松装密度降低、流动性变差;而漏嘴直径的增大使得粉末变粗、松装密度增大、流动性有所提高;最佳雾化参数为熔融合金温度1200℃,水压20MPa,漏嘴直径4mm。
The influence of the water pressure,the metal melt temperature and the nozzle diameter on particle size distribution,apparent density and flowability of Cu-0.3La powders was studied.Results show that quantity of fine powder can be increased when the water pressure and melt temperature are properly increased,and at the same time,the apparent density is reduced and the flowability worsen.Also,when nozzle diameter is increased,quantity of fine powder can be reduced,the apparent density is increased and the flowability is improved.The optimum parameters are as follows： the melt temperature is 1200℃,the water pressure is 20 MPa and the nozzle diameter is 4 mm.
出处
《粉末冶金技术》
CAS
CSCD
北大核心
2011年第4期279-282,共4页
Powder Metallurgy Technology
关键词
水雾化
粉末粒度
松装密度
流动性
water atomizing
particle size
apparent density
flowability
