The reason for the blackening of the stainless steel plate after the treatment of the weld bead treatment fluid is that the weld bead treatment fluid is not clear and clean, and the liquid medicine remains discolored.
Causes and treatment of blackening of stainless steel pipeline after pickling:
There are two possible reasons for the acid wash black of stainless steel pipeline: firstly, the oil stain is not completely removed, and many residues will be adsorbed on the surface of the workpiece after pickling. Secondly, excessive pickling will also lead to blackening of stainless steel surface. If the blackening can be removed by hand, the film remover can be used directly. The solution can quickly remove the black produced after pickling. The film stripping solution is a kind of liquid medicine prepared by the manufacturer, which can be directly applied to the blackened part of the stainless steel workpiece surface due to pickling, and then cleaned with clean water after the black completely disappears.