关键词: 选择性激光烧结, 单因素实验, 压缩强度, 尺寸精度

Abstract:

The selective laser sintering technology provides a new approach to manufacture metal parts.The properties of the metal parts are affected by many factors.In this paper,the single factor experiments are employed to study the indirect SLS of the mixed powder of 316L and epoxy resin.The factors investigated are laser power,scanning speed,scan spacing and layer thickness.The compressive strength and dimensional accuracy of the parts are measured.The influence of different factors on the properties of the parts is obtained.The compressive strength of the parts increases with the addition of the laser power and lower scanning speed,and decreases with greater scanning space and layer thickness.The dimensional accuracy of the parts is reduced by the addition of the laser power and the lower scanning speed,and improved by addition of the scanning space and layer thickness.The surface roughness of the parts is improved by the addition of the layer thickness.

Key words: selective laser sintering;single factor experiment;compressive strength;dimensional accuracy