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<p>The emerging significance of metal additive manufacturing (AM) has grabbed immense interest in manufacturing industry over traditional methods owing to its design flexibility and incredible customization capabilities. But, the metallic parts produced by the AM methods often possess poor surface finish, which affect the properties adversely. This study tried to address this anomaly by employing various grinding strategies in order to enhance the surface and microstructural properties. These have been carried out on SS316 parts that were fabricated through conventional casting and selective laser melting (SLM) methods. Moreover, a comparative analysis has also been carried out between ultrasonic-assisted grinding (UAG) and conventional grinding (CG) in terms of cutting forces, surface roughness, residual stress, and microstructural study for both the as-casted and additively manufactured parts. The results revealed UAG as better grinding strategy as compared to CG such that there was 31.01% and 36.41% reduction in normal force; and 37% and 32.21% reduction in surface roughness values found for as-casted part and AM part, respectively. Additionally, better microstructure was also obtained in the case of UAG process. Hence, UAG can be regarded as a sustainable and effective method of post-processing of additively manufactured SS parts.</p>

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Post-processing of additively manufactured SS316 part using ultrasonic-assisted grinding: a sustainable approach over conventional grinding

  • 期刊论文

  • 发表日期：

    2025年5月16日

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  • Aswani Kumar Singh,
  • Ramandeep Singh,
  • R Durga Prasad Reddy,
  • Varun Sharma

摘要

The emerging significance of metal additive manufacturing (AM) has grabbed immense interest in manufacturing industry over traditional methods owing to its design flexibility and incredible customization capabilities. But, the metallic parts produced by the AM methods often possess poor surface finish, which affect the properties adversely. This study tried to address this anomaly by employing various grinding strategies in order to enhance the surface and microstructural properties. These have been carried out on SS316 parts that were fabricated through conventional casting and selective laser melting (SLM) methods. Moreover, a comparative analysis has also been carried out between ultrasonic-assisted grinding (UAG) and conventional grinding (CG) in terms of cutting forces, surface roughness, residual stress, and microstructural study for both the as-casted and additively manufactured parts. The results revealed UAG as better grinding strategy as compared to CG such that there was 31.01% and 36.41% reduction in normal force; and 37% and 32.21% reduction in surface roughness values found for as-casted part and AM part, respectively. Additionally, better microstructure was also obtained in the case of UAG process. Hence, UAG can be regarded as a sustainable and effective method of post-processing of additively manufactured SS parts.