面曝光快速成形制件的拉伸强度  

Research on tensile strength of parts in mask projection stereo-lithography

作　　者：黄卫明[1] 胥光申[1] 薄艳丽[2] 巨孔亮 罗声[1] 

机构地区：[1]西安工程大学机电工程学院,陕西西安710048 [2]西安工程大学人文社会科学学院,陕西西安710048

出　　处：《西安工程大学学报》2015年第1期95-99,共5页Journal of Xi’an Polytechnic University

基　　金：国家自然科学基金资助项目(50875194);陕西省教育厅产业化培育资助项目(2011JG17)

摘　　要：为了研究面曝光快速成形工艺的制作参数和制件放置方式对制件强度的影响,按照国家标准设计了测试件,在不同的制作参数和制件放置方式条件下,对测试件进行了拉伸实验,研究了不同制作参数和制件的放置方式对制件拉伸强度的影响.结果表明,曝光时间在60~360s范围时,随曝光时间的延长,拉伸强度由2.21MPa逐渐增大到15.94MPa;切层厚度在0.05~0.5mm范围时,随切层厚度的增大,拉伸强度由17.33MPa逐渐减小到1.90MPa;放置方式对测试件的拉伸强度有显著影响,沿长度方向放置制件时的拉伸强度最高.To understand the influence of the fabrication parameters and the orientations of build layers on the tensile strength of parts fabricated with the mask projection stereo-lithography,the tensile test specimens are designed according to the requirements of the national standard and fabricated with the mask projection stereo-lithography system,and tensile strength of specimens were tested.The experimental investigation shows that the tensile strength gradually increases from 2.21 to 15.94 MPa with the exposure time extending from 60 to 360s,and the tensile strength decreases from 17.33 to 1.90 MPa with the layer thickness increasing from0.05 to 0.5mm.The tensile strength of the specimens varies with orientations of build layers.

关 键 词：面曝光 拉伸强度 曝光时间 切层厚度 

分 类 号：TG665[金属学及工艺—金属切削加工及机床]