多金属3D打印的SLM设备工艺参数库试验研究  

Experimental study on database of process parameter of SLM equipment with multi-metal 3D printing

作　　者：伍贤洪 吴泊良[1] WU Xianhong;WU Boliang(Nanning College for Vocational Technology,Nanning 530008,CHN)

机构地区：[1]南宁职业技术学院,广西南宁530008

出　　处：《制造技术与机床》2020年第5期89-93,98,共6页Manufacturing Technology & Machine Tool

基　　金：国家自然科学基金青年科学基金项目“双梯度骨骼修复体熔融沉积成形机理及结构与性能耦合调控研究”(51705094);2018年度广西高校中青年教师基础能力提升项目“基于有限元法的3D金属打印优化设计及试验研究”(2018KY0972)。

摘　　要：针对特定的金属3D打印机,加工不同金属均需反复实验,因此建立成形工艺参数数据库十分必要。以某国产金属打印设备为研究对象,以加工Al Si10Mg合金的工艺方法为例,采用正交试验方法和微观组织分析法验证其选择最佳工艺参数组合的正确性,最终通过多种金属的加工得到该设备的激光功率、扫描间距、扫描速度对打印不同金属的致密度、抗拉强度以及断后伸长率的影响的规律。结果显示选择激光功率时要充分考虑金属的熔点、易氧化、反光率等特性,扫描间距对成形不同金属的力学性能影响敏感度最大,为建立更多金属成形工艺数据库提供了参考。For a specific metal 3 D printer,repeated experiments are needed to process different metals,it is necessary to establish a database of forming process parameters for a specific type of machine. In this paper,domestic metal printing equipment is taken as the research object,and takes the processing method of AlSi10 Mg alloy as an example,and uses orthogonal test and micro-structure analysis to verify the correctness of the best combination of process parameters. Then the effects of laser power,scanning distance and scanning speed on the density,tensile strength and elongation of the printed metal can be obtained by processing a variety of metals. The results show that the melting point,oxidation resistance,and reflective rate of metals should be fully considered when selecting laser power;Scanning spacing has the greatest sensitivity to the mechanical properties of different metals. Finally,it can provide reference for the establishment of more metal forming database.

关 键 词：激光选区熔化 金属3D打印 AlSi10Mg合金 工艺参数库 

分 类 号：TH162.1[机械工程—机械制造及自动化]