激光能量密度对尼龙12/HDPE制品尺寸的影响  

Effect of laser energy density on the dimension of nylon12/HDPE product

作　　者：任乃飞[1] 罗艳[1] 许美玲[1] 顾佳方[1] 江杰[1] 

机构地区：[1]江苏大学机械工程学院,镇江212013

出　　处：《激光技术》2010年第4期561-564,共4页Laser Technology

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.

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 

分 类 号：TF124[冶金工程—粉末冶金] TQ327.8[冶金工程—冶金物理化学]