Some customers ask why the pre-treatment step of degreasing should be added before tin plating of cold rolled steel plates? And how to choose the right steel electrolytic degreasing powder?
We know that rolling oil and emulsion are used in the cold rolling process to lubricate and cool the strip steel. After rolling, there are a lot of residues on the strip surface, which are mainly rolling oil, emulsion, iron powder and loose impurities. After cleaning with degreaser, the surface quality of the original steel plate is improved, and the cleaning effect of degreaser plays an important role in the post-sequence process.
Electrolytic degreasing, like chemical degreasing, is widely used in the production of galvanized and tinned steel sheets. It is mainly in the degreasing solution with direct current, due to the polarization of the electrode, reduce the interfacial tension of the oil solution, electrode precipitation of hydrogen and oxygen bubbles, the oil film has a strong tearing effect, can promote the oil film quickly transformed into fine oil beads, bubbles rising mechanical stirring effect, to further strengthen the process of oil removal. Due to the above reasons, electrochemical oil removal is not only much faster than chemical oil removal, but also removes oil thoroughly with good effect.
Therefore, when we pre-treat the cold rolled steel plate, we must add a process of degreasing, in this way, in the subsequent plating process, the quality of the plating layer will be better. So how to choose the steel degreasing powder, BC-1105 steel degreasing powder is the product of Bigely Technology, it can remove all the oil on the metal surface, make the workpiece get a glossy appearance, and easy to rinse, and is suitable for the production of electroplating automatic line.
If you have any demands for steel electrolytic degreasing powder, please feel free to contact us.
