Corrosion Protection of Materials

Plate-Like Heat Exchangers Resistance Made of Alloy 06KhN28MDT (Similator to AISI904L Steel) to Crevice Corrosion

Anna Dzhus (anna-92@ukr.net)1, Oleksiy Narivskyi2, Gennadii Snizhnoi2, Tetiana Pulina2, Valentyn Snizhnoi3, Sergiy Sheyko3

1. National University “Zaporizhzhia Polytechnic”
2. “Ukrspetsmash” LLC
3. Zaporizhzhia National University

https://doi.org/10.15407/msse2023.163

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Keywords

crevice corrosion, plate-like heat exchanger, model circulating water, chloride-containing media, resistance of 06KhN28MDT alloy to crevice corrosion

Abstract

Plate-like heat exchangers made of the 06KhN28MDT alloy (similar to AISI904L steel) in the production of different acids are used. It can be exposed to crevice corrosion between the corrugations of adjacent heat transfer plates of plate-like heat exchangers. In the article, the resistance of the alloy to crevice corrosion in model circulating waters has been investigated. For production melts of the 06KhN28MDT alloy with a minimum content of C and a maximum of Cr, Mo, Ti and Cu with a mean austenite grain diameter of up to 15 μm are recommended to choose.

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