Nanoscale surface analysis on second generation advanced high strength steel after hot dip galvanizing

REACTION KINETICS OF THE FORMATION OF INTERMETALLIC Fe – Zn DURING HOT - DIP GALVANIZING OF STEEL

P. Pokorny, J. Kolisko, L. Balik – Czech Technical University – Klokner Institute, Prague, Czech Republic P. Novak – Institute of Chemical Technology, Prague, Czech Republic This review article mainly describes the composition of intermetallic Fe Zn, i.e. zeta (ζ), delta (δ1k + δ1p), gamma1 (Γ1) and gamma (Γ) on galvanized steel during low temperature galvanization (t ~ 450 °C). It gives detail...

Exploring Carbide-Free Bainitic Structures for Hot Dip Galvanizing Products

Determination of Surface Topography and Composition of Cr-Free Pretreatment Layers on Hot Dip Galvanized Steel

Topography and composition of Cr-free, titanium-based pretreatment layers on hot dip galvanized steel were studied with scanning electron microscopy, atomic force microscopy, time of flight secondary ion mass spectrometry and Auger electron spectroscopy. A layer within the target coating weight range (4-10 mg Ti/m) for industrial coil coating processes contained a micro-structure with hillocks ...

Some Applications of Neural Networks for Condition Monitoring in Industrial Systems for Hot Dip Zinc Galvanizing

The paper describes the abilities of some particular neural network structures (NNS) to provide condition monitoring in a real industrial system, designated for hot dip zinc galvanizing. Condition assessment of a molten zinc bath furnace, and more specifically analysis and prediction of the technical condition in galvanizing kettle walls are also developed in this paper.

Optimization of exposure time for hot dip galvanizing and study the effects of preflux bath additives on the microstructures of galvanized steel

The objective of this research work is to optimize the time of exposure for hot dip galvanizing of mild steel, so as to achieve such a microstructure of zinc coating that protects mild steel for long against atmospheric corrosion. In order to decide the above mentioned parameter the polished samples, one at a time, were dipped in to 500 g molten zinc at 460 to 470 oC in the crucible for a diffe...