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

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CO2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。

Abstract: In order to discuss the effect of laser energy density on the dimension of nylon12/HDPE (high density polyethylene) product,experiments of sintering nylon12/HDPE were carried out with CO2 laser based on the selective laser sintering technology.The microstructure of laser-sintering nylon12/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 densitv P/v=0.8% while warping is about 0.4mm.This study is helpful to sinter the composite of nylon powder.