Original scientific paper High energetic water jets sprayed from nozzles are used for scale removal. Special nozzles with flat and very narrow jets for high feed pressure are used. This process, called descaling, is used in hot rolling, for example. A number of jets must be used to cover the total width of a rolled strip. High quality and homogeneity of the descaling process is required. A row ...

Sichuan is gradually being transformed and utilizing groundwater thermal resources. However, this investigation found that the high mineralization rate of geothermal resources in Basin common efficient, environmentally friendly descaling technology key to promoting utilization low-yield oil gas wells. Due efficiency, low cost, lack pollution high-pressure jet descaling, it has attracted more at...

High-frequency electronic descaling devices are physical water treatment methods that use a high-frequency electromagnetic field to prevent and remove scale. The effectiveness of the method is verified by monitoring growth scale on surface heat exchange tubes. microstructure obtained from experiments analyzed scanning electron microscope (SEM), action characteristics fields explored observing c...

In this study, two silicon-containing steels with different P contents were used, and reheating tests were conducted in an industrial furnace in a hot strip plant. The effect of P on the microstructure and melting temperature of Fe2SiO4 in silicon-containing steels was investigated using a backscattered electron (BSE) detector and energy-dispersive spectroscopy (EDS). The melting process of Fe2...

Steels containing sufficient concentrations of silicon tend to form a low melting temperature oxide called fayalite, which then penetrates both the steel and any other oxide to form a mechanical key. As a consequence, routine descaling operations fail to remove all traces of FeO that remain attached to the final product and oxidise to form a red oxide blemish on the surface. The formation of ox...

The scale removing process with acid, generally called as the pickling process, is accepted by steel producers satisfactorily. However, most of tend to develop without acid due environmental regulations. In related literature, some methods were studied for finding eco-friendly solutions. Although these studies seem be promising, still dominant a descaling before cold rolling applications. this ...