Inorganic treatment solution special for hot-dip aluminum-zinc plate and preparation method of hot-dip aluminum-zinc plate

The invention belongs to the technical field of hot-dip aluminum-zinc plates, and particularly relates to an inorganic treatment solution special for a hot-dip aluminum-zinc plate and a preparation method of the hot-dip aluminum-zinc plate. The technical problem to be solved by the invention is to provide the inorganic treatment solution special for a hot-dip aluminum-zinc plate and the preparation method of the hot-dip aluminum-zinc plate with excellent environmental protection property, heat resistance, corrosion resistance, black deformation resistance, fingerprint resistance and water resistance. Based on 100 parts by weight of water, the special inorganic treatment solution comprises the following components in parts by weight: 10-20 parts of a phosphate, 5-15 parts of a strong oxidizing substance, 3-12 parts of a weakly acidic substance, 5-10 parts of an inorganic complex and 20-30 parts of colloidal silicon dioxide. The inorganic treatment solution forms a compact coating on thesurface of the aluminum-