The effect of forming process on the corrosion characteristics of DX51D galvanized steel sheets

Authors : Alaaddin Toktaş, Mustafa Dülger, Gülcan Toktaş

Pages : 1117-1124

Doi:10.5505/pajes.2025.63838

View : 211 | Download : 356

Publication Date : 2025-12-15

Article Type : Research Paper

Abstract :This study examines the effect of forming (bending and folding) procedures on the corrosion behavior of galvanized sheet steel in poultry manure. It also aims to compare the corrosion behavior in poultry manure with salty and atmospheric environments. To achieve this objective, samples were prepared by laser cutting DX51D galvanized sheets. These samples were then subjected to various bending processes, including V, L, U, and Z-bendings, as well as multiple bending, folding, and folding+bending techniques. The samples underwent salt spray testing to determine the percentages of white and red rust on their surfaces. The samples, including laser cut, V-bendings, multiple bending, and folding, were exposed to the atmosphere and poultry manure settings for 28 days. The corrosion rates in these environments were calculated by measuring the mass losses every seven days. In the salt spray test, 60° bent samples exhibited the most corrosion resistance compared to the other forms, showing minimum percentages of white (56%) and red (4%) rust. The frame-cut sample showed a maximum corrosion rate of 0.00152 mm/year in the atmosphere. Bending and folding processes had no detrimental effect on the galvanized coating, such as peeling or flaking the coating. However, corrosion affected the bent and folded regions negatively by decreasing the coating thickness.
Keywords : Galvanizli çelik, Eğme, Tuz sisi testi, Korozyon hızı

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