The finishing by the hydroxy sulfate

摘要

Although purpose of this invention while the galvanized steel seat cracks, decreases the deterioration of coating, in order to improve the temporary corrosion protection of the aforementioned seat, processes the surface of the galvanized steel seat, it is to use the sulfate ion content solution. In addition, also method in order the lubrication to do the seat which the aforementioned coating is done, is disclosed.