The pretreatment of painting anodized aluminum generally includes removal of surface oils and anti-corrosion treatment. However, the selection of aluminum treatment agent still needs certain standards, so that we can solve the problem that the grease on the surface of the aluminum material can not be eliminated, it will seriously affect the subsequent anti-corrosion treatment.
What is the standard for the selection of aluminum degreasing material?
The choice of liquid degreasing , weakly alkaline, can not be corrosion of aluminum, degreasing containing as much as possible without inorganic matter, in particular, can not contain sodium nitrite, sodium silicate, sodium metasilicate, caustic soda, fluoridation Sodium, sodium chloride, chromium-containing oxidants and other inorganic substances.
Such as non-ferrous metal cleaning liquid, neutral degreasing liquid.