选区激光烧结单组份金属粉末试验研究  

Study on Selective Laser Sintering of Single metallic Powder

作　　者：陈继民[1] 岳灿甫[1] 王旭葆[1] 左铁钏[1] 

机构地区：[1]北京工业大学激光工程研究院,北京100022

出　　处：《应用激光》2004年第4期194-196,共3页Applied Laser

基　　金：国家"973"项目(G2000067205)北京市自然科学基金重点项目(2011002)资助

摘　　要：选区激光烧结由于可以不受材料的限制,可以快速烧结出任意复杂的三维实体,被认为是最具发展前景的快速制 造技术。用激光直接烧结金属粉末成形已成为目前研究的重点。本文用YAG激光对铝粉、铁粉、铅粉进行了对比烧结试验, 同样条件下,不同的金属粉末激光烧结的结果不同,铝粉烧结球化现象严重,铅粉烧结伴有飞溅严重,铁粉烧结随着扫描速度 的增加,烧结由连续金属线逐渐成为断续的以至球形金属颗粒。最后分析了激光烧结球化的机理。Selective Laser Sintering (SLS) is widely regarded as one of the most flexible of RP technologies due to the wide variety of materials, which can be processed, including a range of polymers, ceramics and metals. Direct selective laser sintering (SLS) technology can be used to produce 3D hard metal functional parts directly. This paper summarizes the work on SLS of single metallic powder. The experimental study revealed the material spheroidization and splash during YAG laser raster scanning. Different metallic powder behavior different. Al powder has strong tendency to become sphere while Pb powder has severe splash. The sintered Fe line can be broken to small balls gradually when increasing scanning speed. Finally the mechanism of powder spheroidization was analysed.

关 键 词：激光烧结 球化 飞溅 烧结金属 金属粉末 快速制造技术 金属线 烧结试验 铁粉 铝粉 

分 类 号：TN248.13[电子电信—物理电子学] TF046[冶金工程—冶金物理化学]