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Engineering Review : International journal for publishing of original researches from the aspect of structural analysis, materials and new technologies in the field of mechanical engineering, shipbuilding, fundamental engineering sciences, computer sciences, electrical engin, Vol. 45 No. 3, 2025.

Original scientific paper

https://doi.org/10.30765/er.3074

Corrosion challenges towards a sustainable turning of stainless steel under different cooling methods

Graciela Šterpin Valić orcid id orcid.org/0000-0001-5039-1861 ; Department of Industrial Engineering and Management, Faculty of Engineering, University of Rijeka, Vukovarska 58, 51000 Rijeka, Croatia *
Dario Kvrgić ; Department of Materials Engineering, Faculty of Engineering, University of Rijeka, Vukovarska 58, 51000 Rijeka, Croatia
Goran Cukor orcid id orcid.org/0000-0002-6767-0960 ; Department of Industrial Engineering and Management, Faculty of Engineering, University of Rijeka, Vukovarska 58, 51000 Rijeka, Croatia
Maja Vlatković ; Department of Industrial Engineering and Management, Faculty of Engineering, University of Rijeka, Vukovarska 58, 51000 Rijeka, Croatia

* Corresponding author.

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Abstract

Metalworking fluids are mostly produced based on mineral oils. Such fluids are not naturally biodegradable and contain large amounts of ingredients that are harmful to the environment and human health. They are therefore classified as hazardous waste and must be safely disposed of. Mineral oil-based fluids are the main unsustainable element of the metal cutting machining process. This study aims to investigate the influence of cutting parameters and cooling techniques (dry, conventional emulsion, minimum quantity lubrication (MQL), and MQL combined with vortex tube cooling) on the corrosion resistance of AISI 316L austenitic stainless steel. Electrochemical corrosion, and metallographic tests were performed. Surface chemical composition using energy-dispersive X-ray spectroscopy (EDS) before and after corrosion testing, and surface morphology using scanning electron microscopy (SEM) were analysed. The applied cooling method has a significant influence on both the elemental composition and the electrochemical behaviour of the machined surfaces. The role of machining-induced surface chemistry in localized corrosion behaviour is crucial. MQL-based techniques providing the most favourable electrochemical parameters and dry machining resulting in the poorest performance. The MQL combined with vortex tube cooling achieved the lowest corrosion rate (≈0.0308 mm/year), while dry machining exhibited the highest (≈0.0833 mm/year), highlighting the effectiveness of the hybrid sustainable cooling approach. The potential of MQL-based techniques as efficient and environmentally friendly alternatives to cooling has been confirmed.

Keywords

austenitic stainless steel; vortex tube cooling; MQL; corrosion performance

Hrčak ID:

336384

URI

https://hrcak.srce.hr/336384

Publication date:

9.10.2025.

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