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Brief Analysis of the Difference between Pickling Passivation and Electrolytic Polishing of Stainless Steel Tank

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In recent years, the mature and wide application of stainless steel storage tanks has made it have surface treatment processes such as stainless steel pickling passivation and stainless steel electrolytic polishing. But there are a lot of chemical manufacturers is not very clear stainless steel pickling passivation and electrolytic polishing of the difference between where? 
Pickling and passivation of stainless steel: it is to soak the whole stainless steel part in the stainless steel pickling and passivation solution until the surface of the stainless steel part is uniformly silvery white, and then take out the workpiece and rinse the surface with clean water.
Stainless steel electrolytic polishing: fix the stainless steel to be polished on the hanging tool, then turn on the electrolytic polishing equipment, adjust the power supply voltage at the same time, and then immerse the fixed stainless steel parts in the electrolyte that is energized and heated to 75 degrees. The general time is 1-3 minutes, and the workpiece can be taken out after the surface is bright and rinsed.