Acid-pickling-free hot galvanizing process

The invention relates to the field of hot galvanizing, and discloses an acid-pickling free hot galvanizing process. A hot galvanizing acid-pickling-free technology modification project is adopted, themodification scheme is mainly characterized in that an original acid pickling process is abandoned, one original set of rinsing bath is changed into a plating assisting bath, two sets of plating assisting baths are newly added, and three sets of plating assisting baths are formed; according to the production process, twice shot blasting is added, the shot blasting quality is improved, and the galvanizing quality is ensured; the acid-pickling-free plating assisting process is adopted, so that acid gas is not generated, and disordered exhaust gas generated through feeding dust of a plating assisting agent and volatilizing waste gas of an additive and the like can be discharged directly and disorderly as long as reducing the falling of materials, enhancing the ventilation, and strengtheningthe management measures; t