Abstract
In addition to several well known defects in hot dip galvanised products, there are other defects that, although less frequent, damage the quality of the coated steel sheet. One of these, wrinkle bands, were microstructurally characterised, and their influence on corrosion behaviour of coated sheet was evaluated. Surface characteristics and microstructural features were examined by scanning electron microscopy, microanalysis and glow discharge optical spectroscopy. The results indicated that the major cause of wrinkle bands is related to craters that originated from cold rolling that act as a pool for molten zinc during galvanising. Corrosion resistance was examined via a salt spray test, and the time to red rust formation was up to 72 h shorter on wrinkle bands as compared to other regions.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
