摘要
针对熔融沉积成形(Fused deposition modeling,FDM)最常用的成形材料聚乳酸(Polylactic acid,PLA),选用氯仿溶液进行表面雾化抛光,以提高FDM成形件的表面质量。研究抛光温度、抛光时间和抛光液浓度对FDM成形件表面抛光效果的影响。实验结果表明抛光表面的粗糙度随着抛光温度升高和抛光时间增加而减小,但当抛光温度和抛光时间达到一定程度后,抛光表面粗糙度并没有明显的减小。随着抛光液浓度的增大,抛光表面的粗糙度减小。采用抛光温度为60℃、抛光时间为7 min和抛光液浓度为100%时的抛光效果较好,抛光后成形件的表面粗糙度大幅减小,表面形貌得到显著改善,且对成形件的尺寸和质量影响很小。
The most commonly used material for fused deposition molding FDM build parts is polylacuc acud PLA CHCL3 is used for spray polishing surface which can improve surface quality of FDM build parts. This paper investigates the effect of the polishing temperature, polishing time and polishing concentration on the FDM build parts. Experimental results show that the surface roughness of FDM build parts reduces with the increasing of temperature and time, but the surface roughness of FDM build parts increase slightly after the temperature and time reaching a certain value. With the increasing of concentration of polishing liquid, the surface roughness of FDM build parts reduces sharply. At a polishing temperature of 60℃, polishing time of 7 rain and a concentration of polishing liquid of 100%, the surface roughness of FDM build parts after polishing decreases sharply ; the surface topography has significantly improved; and the effect on the dimensional accuracy and quality of parts is small.
出处
《机械科学与技术》
CSCD
北大核心
2017年第6期960-964,共5页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学青年基金项目(51205142)
华侨大学中青年教师科研提升计划项目(Z14J0009)及华侨大学研究生科研创新能力培育计划项目资助
