摘要
为了研究激光能量密度对尼龙12/高密度聚乙烯(HDPE)制品尺寸的影响,基于选择性激光烧结快速成型技术,利用CO_2激光对尼龙12/HDPE粉体材料进行了激光烧结成型试验,并用扫描电镜分析了烧结层中尼龙12/HDPE的显微组织。结果表明,随着激光功率/扫描速率(P/v)的增加,烧结件的翘曲量逐渐增大;较佳的成型激光能量密度为P/v=0.8%,此时的翘曲量约为0.4mm。该结果对复合尼龙粉末的激光烧结的研究是有帮助的。
In order to discuss the effect of laser energy density on the dimension of nylonl2/HDPE （high density polyethylene） product, experiments of sintering nylonl2/HDPE were carried out with CO2 laser based on the selective laser sintering technology. The microstructure of laser-sintering nylonl2/HDPE was examined by means of scanning electron microscopy. It is concluded that warping will increase with the ratio of power/velocity （P/v） increasing. Optimum laser energy density P/v = 0.8% while warping is about 0.4mm. This study is helpful to sinter the composite of nylon powder.
出处
《激光技术》
CAS
CSCD
北大核心
2010年第4期561-564,共4页
Laser Technology
关键词
激光技术
选择性激光烧结
激光能量密度
翘曲量
致密度
laser technique
selective laser sintering
laser energy density
warping
sintered density
