多级雾化制粉技术对粉状钎料粒度组成的影响  

Effect of multi-stage atomization manufacturing technology on granularity of powder filler metal

作　　者：丁天然[1] 曹新民[1] 钟素娟[1] 于奇[1] 孙华为[1] 杜全斌[1] 

机构地区：[1]郑州机械研究所新型钎焊材料与技术国家重点实验室,郑州450001

出　　处：《金刚石与磨料磨具工程》2015年第1期68-70,共3页Diamond & Abrasives Engineering

基　　金：国家国际科技合作专项项目(2014DFR50820)

摘　　要：为了提高多级雾化制粉技术所得粉末的品质,通过改变合金液流直径、雾化介质压力和合金溶液过热度三者的参数,分析其对粉末粒度组成的影响。实验结果表明:合金液流直径愈小,所得细粉末也愈多,但液流直径小于2mm时,雾化过程失败;合金熔液的过热度愈高,细粉末产出率愈高,但过热度超过200℃后,会增加雾化粉末的氧化程度,最终影响粉末的品质;当雾化介质压力增大时,细粉的产出率会提高,但仅仅提高雾化压力,而不注意漏嘴和雾化器的尺寸与雾化参数合理匹配,不能确保提高细粉收得率。technology, granularity the smaller is less than In order to improve the quality of powder on multi-stage atomization manufacturing ：ter, spray medium pressure and alloy solution superheat on yzed by changing parameters of them. The results show that re fine powder is obtained. However, when the flow diameter ＇.ss fails. The higher is alloy solution superheat, the higher is , superheating temperature over 200℃ will increase the degree of effects the quality of powder. With the increasing of spray ine powder will increase. But only to improve atomization pressure and not pay attention match, this does not necessari to ly size of slip and the atomizer and atomization parameters are reasonable improve the fine powder yield rate.

关 键 词：雾化法 粉状钎料 粒度组成 

分 类 号：TG74[金属学及工艺—刀具与模具]