Degreasing line is used to remove rolling oil, residual iron and other pollutants in order to control residual carbon and iron effectively; meanwhile the line can prevent the defects such as strip adhesion during annealing process. The strip after degreasing can be used as teh raw material for food-grade electrolytic tinplates.
Electrolytic degreasing technology means that immersing the steel strip in certain electrolyte to perform electrolytic treatment under polarity-reversing direct current to remover the grease on the strip.
Chemical degreasing is a process in which the grease on the strip is removed throught saponification and emulsification of alkali solution or surfactant.s