Email:jessy@jshengda.comWuxi Hengda Liquid-Purification Chemical Plant

Wuxi Hengda Liquid-Purification Chemical Plant

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The Tips Of Pickling Passivation Treatment For The Stainless Steel After Welding (pickling Paste)

With the development of domestic industry, the demand of stainless steel is increasing year by year in various industrial fields such as chemical mechanical storage tank type and other products.After the product has been purchased,the pickling agent that used to purify the stainless steel structure and the surface of the workpiece is essential.


Pickling passivation paste (coating):pickling paste is a best method for large structural components such as chemical machinery,storage tank,installation etc.Be sure to pretreat it before applying the pickling gel.Completely remove the residual anti-spatula film, grease, paint, universal pen, PVC insulation tape, mud and other adhesives,then wash the surface with soapy water.If the surface is required to be beautiful, must be operate carefully.


Apply the pickling gel 1-2mm to the surface of stainless steel with brush or cotton towel.After the oxide is dissolved, be sure to wipe it with a brush and wash away the dissolved oxides and metal salts etc with water.Wash not thoroughly or cloth is not dirty, sometimes also reproduces red rust and causes hole erosion, so should be avoided absolutely.Washing with high pressure washer is most suitable (water pressure above 30 kg).Pickling operation should avoid direct sunlight.


Be sure to wash dissolved scale and pickling residue after pickling.If not washed thoroughly,it remains a large number of acid components on the surface of workpiece attached to the air of iron, red rust will occur around 24 hours.If unmanaged, corrosion gradually expands and sometimes develops into hole corrosion.

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