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

IF 3 3区工程技术 Q2 CHEMISTRY, ANALYTICAL

Micromachines Pub Date : 2025-05-27 DOI:10.3390/mi16060634

Wei Fang, Qiuling Wen, Jiaxin Hu, Feng Jiang, Zhongwei Hu, Xian Wu, Jinlin Yang, Xiaoguang Wang

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引用次数: 0

Abstract

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 μm to 1.936 μm, 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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SLM-316L不锈钢表面激光抛光与机械磨削的实验研究。

316L不锈钢材料具有优异的耐腐蚀性和可塑性，以及其他优点，广泛应用于汽车零部件，模具，航空航天零件，生物医学设备等。研究了采用1064 nm纳秒激光加工和机械磨削对316L不锈钢进行选择性激光熔化（SLM）表面抛光。采用正交试验法研究了激光加工参数对SLM-316L不锈钢表面粗糙度的影响。激光加工后，SLM-316L不锈钢表面粗糙度由7.912 μm降低到1.936 μm，但表面出现了许多随机分布的不规则微裂纹。EDS和XRD检测表明，激光加工后的SLM-316L不锈钢表面产生了氧化铁。进一步进行机械磨削，达到纳米级表面光洁度，去除激光加工后SLM-316L不锈钢表面产生的金属氧化物和微裂纹。AFM测量结果表明，机械磨削后，SLM-316L不锈钢的表面粗糙度降至约3 nm。此外，激光加工的SLM-316L不锈钢表面的微裂纹和氧化铁被完全去除。该工作对SLM-316L不锈钢的精密抛光具有指导意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Micromachines NANOSCIENCE & NANOTECHNOLOGY-INSTRUMENTS & INSTRUMENTATION

CiteScore

5.20

自引率

14.70%

发文量

1862

审稿时长

16.31 days

期刊介绍： Micromachines (ISSN 2072-666X) is an international, peer-reviewed open access journal which provides an advanced forum for studies related to micro-scaled machines and micromachinery. It publishes reviews, regular research papers and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.