中温氟铝酸盐铝钎剂的研究现状和发展趋势  

Research status and development trend of middle temperature fluoaluminate flux

作　　者：蔡志红[1] 贺军四[1,2] 杨占红[2] 刘宏江[1] 

机构地区：[1]广州有色金属研究院,广东广州510651 [2]中南大学化学化工学院,湖南长沙410083

出　　处：《焊接技术》2009年第1期3-6,共4页Welding Technology

摘　　要：Nocolok钎剂虽具有无腐蚀、不溶于水等优点,但其操作温度过高,一多半的铝合金不能用其进行钎焊。重点介绍了3种中温氟铝酸盐钎剂,但由于其价格昂贵或有毒,其应用受到了一定的限制。笔者认为:钎剂未来的发展方向将会在继续保持钎剂无腐蚀、不溶性的基础上,考虑常用铝合金的不同固相线熔点和特性,研发出匹配于常用钎焊铝合金的钎剂系列,同时还进一步降低钎剂的熔化温度,提高钎剂活性,增加钎剂的稳定性,使Nocolok系列钎剂适用于更多种的铝合金。Though Nocolok flux has the advantages of corrosion-free and insolubility in water,the operation temperature is so high for half of the aluminum alloys brazing.Therefore a lot of researches modified it.This paper will introduce three modified middle-temperature fluoaluminate fluxes,but the expensive expense and toxicity restricted them in a general use.Considering the properties and melting range of frequently used aluminum alloys,the prospects of the development will be focused on the function of corrosion-free and insolubility,continue to lower the flux's melting temperature,improve the activities and increase the stabilities,make the Nocolok flux fit for many other aluminum alloys.

关 键 词：中温氟铝酸盐 Nocolok钎剂 铝合金 无腐蚀 

分 类 号：TG425[金属学及工艺—焊接]