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<p>The machining of stainless-steel parts produced by wire arc additive manufacturing remains insufficiently studied, despite the growing industrial adoption of this process. This study aims to evaluate and compare the machinability of 316L stainless steel parts produced by wire arc additive manufacturing and by conventional rolling. Milling tests, performed as roughing operations, were conducted by varying the cutting speed and the feed per tooth to analyse their effects on vibration levels and surface quality. Additively manufactured components exhibited up to 26.8 % larger vibration amplitudes, which continued to increase with larger cutting parameters. The produced surface roughness is mainly governed by the initial geometric inaccuracies and cutting conditions. The novelty of this study lies in using a combined approach of vibration signal analysis and 3D surface roughness measurement, which provides a more comprehensive understanding of the milling behaviour of stainless steel components produced by WAAM.</p>

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Comparative study of milling for SS316L parts: WAAM-CMT versus rolled processes through vibration signal and surface roughness analysis

  • 期刊论文

  • 发表日期：

    2026年2月11日

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  • Imed Hajjaji,
  • Ezzeddine Ftoutou,
  • Mihed Ben Said,
  • Ated ben Khalifa,
  • Moncef Hammadi,
  • Moez Trigui

摘要

The machining of stainless-steel parts produced by wire arc additive manufacturing remains insufficiently studied, despite the growing industrial adoption of this process. This study aims to evaluate and compare the machinability of 316L stainless steel parts produced by wire arc additive manufacturing and by conventional rolling. Milling tests, performed as roughing operations, were conducted by varying the cutting speed and the feed per tooth to analyse their effects on vibration levels and surface quality. Additively manufactured components exhibited up to 26.8 % larger vibration amplitudes, which continued to increase with larger cutting parameters. The produced surface roughness is mainly governed by the initial geometric inaccuracies and cutting conditions. The novelty of this study lies in using a combined approach of vibration signal analysis and 3D surface roughness measurement, which provides a more comprehensive understanding of the milling behaviour of stainless steel components produced by WAAM.