One completing finish coat of polyurethane painting system after coating on hot dip galvanized radiator for transformer

摘要

The present invention relates to a coating method for hot-dip galvanizing of the radiator that is the transformer, the purpose of the molten zinc to form a phosphate film on the plated film, and such that the adhesion of the top coat paint greatly improved, reducing the number of coating and the thickness of the radiator increases to give a cooling effect, and improve the efficiency and the working process due to the reduced number of times so that the speed of coating, on the human body to provide a coating method for hot-dip galvanizing that uses a transformer for radiators harmless coating material. ; The present invention for achieving the above object is characterized as a hot-dip galvanized coating is a radiator, the hot-dip galvanized varnish impregnation step is impregnated with varnish inside the radiator; Heating drying step of heating and drying the varnish, and the stagnation of the varnish impregnated; Phosphate coating step such that the porous film layer is formed by coating the rust resistance of the zinc phosphate to the reaction, which is coated on the outer surface of the radiator varnish drying step; Very remarkably the adhesive strength of the heat-drying step of heating the dried top coat a porous coating layer formed on the rust-preventive coating step, the phosphate by evaporating the moisture, which is implied in the porous film of the radiator; The top coat paint that made up the steps of the porous polyurethane top coat paint for corrosion protection coating layer of the heating and drying step to the technical subject matter.