Pig iron castings, spray plastic, blister, how to solve?
Electrostatic spray foaming is because the coating because of the partial loss of adhesion and leave the base (base material or its bottom coating) bulge, so that the coating has a circular process deformation.
Bubbles may contain liquids, vapors, other gases, or crystals. A lot of factors to produce the coating defects, such as in the absence of dry base spray, when the film after drying, solvent or water inside the thermal expansion of the film bubble formation; and muster, such as metal bottom, pits the accumulation of moisture is not divisible, while bubbling due to localized corrosion.
