Effect of blade geometry on the powder spreading process in additive manufacturing

作     者：Deze Yang Xihua Chu Qipeng Liu Deze Yang;Xihua Chu;Qipeng Liu

作者机构：School of Civil EngineeringWuhan UniversityWuhan430072China Jiangxi Key Laboratory of Forming and Joining Technology for Aerospace ComponentsNanchang Hangkong UniversityNanchang330063China 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2024年第94卷第11期

页      面：345-355页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by the National Natural Science Foundation of China(grant numbers 12172263 11772237) 

主　　题：Additive manufacturing Powder spreading Blade geometry Discrete element method 

摘      要：In powder-bed-based additive manufacturing,the quality of the powder bed is closely related to the geometry of the blade used during the powder spreading *** this study,the spreading process with the vertical blade,inclined blade,and round blade with different radii was performed by discrete element method to investigate the effects of blade geometry on powder *** results show that at the same spreading parameters,the round blade caused the highest density than inclined blade and vertical *** the round blade radius can improve the packing density of the powder bed,but it has little effect on the *** increase in packing density is related to the transitional smoothness of the blade surface at the entrance of the powder *** smoother the shape transition of the blade surface at the powder bed entrance,the powders enter the powder bed more gently,so more powders enter the powder bed,resulting in higher packing *** results may provide suggestions for improving the laser melting process.