Experimental Study on Surface Polishing of SLM-316L Stainless Steel via Laser Treatment and Mechanical Grinding

被引：0
作者：
Fang, Wei [1 ,2 ]
Wen, Qiuling [1 ,2 ]
Hu, Jiaxin [1 ,2 ]
Jiang, Feng [1 ,2 ]
Hu, Zhongwei [1 ,2 ]
Wu, Xian [3 ]
Yang, Jinlin [1 ,2 ]
Wang, Xiaoguang [1 ,2 ]
机构：
[1] Huaqiao Univ, Inst Mfg Engn, Xiamen 361021, Peoples R China
[2] State Key Lab High Performance Tools, Xiamen 361021, Peoples R China
[3] Huaqiao Univ, Coll Mech Engn & Automat, Xiamen 361021, Peoples R China
来源：
MICROMACHINES | 2025年 / 16卷 / 06期
关键词：
SLM-316L stainless steel; nanosecond laser polishing; mechanical grinding; surface roughness; 316L; PARAMETERS;
D O I：
10.3390/mi16060634
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The 316L stainless steel material boasts exceptional corrosion resistance and plasticity, among other benefits, and finds extensive application in automotive components, molds, aerospace parts, biomedical equipment, and more. This work focuses on the surface polishing of selective laser melting (SLM) 316L stainless steel using 1064 nm nanosecond laser processing and mechanical grinding. The influence of laser processing parameters on the surface roughness of SLM-316L stainless steel was investigated using an orthogonal experiment. After laser processing, the surface roughness of SLM-316L stainless steel was reduced from 7.912 mu m to 1.936 mu m, but many randomly distributed irregular micro-cracks appeared on the surface. EDS and XRD detections illustrated that iron oxides were generated on the surface of SLM-316L stainless steel after laser processing. Mechanical grinding was further performed to achieve a nanometer surface finish and remove the metal oxides and micro-cracks generated on the surface of SLM-316L stainless steel after laser processing. The AFM measurement results indicate that the surface roughness of SLM-316L stainless steel was reduced to approximately 3 nm after mechanical grinding. Moreover, the micro-cracks and iron oxides on the surface of laser-processed SLM-316L stainless steel were completely removed. This work provides guidance for the precision polishing of SLM-316L stainless steel.
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页数：12
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