The invention relates to a novel efficient
manganese-series surface conditioning agent as well as a preparation method and application thereof. The
manganese-series surface conditioning agent is prepared from the following components in percentage by weight: 20 to 40 percent of
manganese salt, 3 to 5 percent of organic salt complex, 10 to 25 percent of
fluoride, 15 to 35 percent of
sodium carbonate and 2 to 15 percent of dispersion
accelerant. According to the invention, a phosphating film which is fine in
crystal, uniform and compact, high in protection performance and capable of being firmly combined with a matrix can be formed on the surface of a
metal workpiece in a short time and at a lower temperature; according to the invention, the micro-state of the surface of the
metal workpiece can be changed, the phenomenon of coarsening of the
coating of the
metal workpiece can be overcome, and the defects of uneven
corrosion and the like caused by strong alkaline
degreasing or strong acidic
rust removal of the metal workpiece can be eliminated; the phosphating solution also can enhance the
corrosion resistance of the surface of a metal workpiece, improve the
adhesive force of a
coating film, reduce the residue amount in the phosphating solution and reduce the consumption of the phosphating solution, and has the advantages of removing impurities brought by the workpiece, preventing the aging of the bath solution, prolonging the service life of the bath solution, improving the phosphating speed and shortening the
treatment time.