作　　者： ; ;

机构地区： 韶关学院物理与机电工程学院

出　　处： 《铸造技术》 2012年第11期1308-1311,共4页

摘　　要： 针对选区激光熔化成型过程中可能影响熔线形貌的因素,研究了熔融金属表面张力、成型过程中飞溅物及扫描速度等激光加工参数对熔线形貌的影响,获得了熔线形貌的优化成型工艺,并最终以此工艺成功成型了一个金属零件。分析表明,该零件尺寸精度达±0.1 mm,表面粗糙度达Ra30μm,表面平整,熔线搭接均匀,熔线堆垒效果理想。 Aimed at the possible effecting factors on the shape and morphology of molten metal line during selective laser melting （SLM）, the effects of surface tension of molten metal, splashing objects in molding process and laser processing parameters （such as scanning speed, layer thickness） on the shape and morphology of molten metal line were studied, and thus a optimization process for the morphology of molten metal line was obtained. A metal part was built successfully by the process. The analyzing shows that the dimensional accuracy of the part is up to ±0.1 mm and the surface roughness up to Ra30 μm, with smooth surface, even metal lines overlapping and satisfactory fuse stackable results.

关 键 词： 选区激光熔化 金属零件 金属熔线 形貌 快速成型

领　　域： [机械工程] [金属学及工艺]