The invention discloses preparation and application of a neutral non-
phosphorus rust remover. The
rust remover mainly comprises a chelating agent, a
polymer, a
corrosion inhibitor, a penetrant, a pH
regulator, water and an assistant, and can be applied to phosphorization, chromizing and
silanization of
coating pretreatment of steel and iron workpieces or
zirconium pretreatment and rusty workpiece derusting procedure before
chemical conversion coating treatment. According to the
rust remover,
treatment time is flexible, the
rust remover is utilized at the normal temperature, does not need to be heated, can be utilized for treatment in a spraying or impregnation manner, does not contain hazardous substances like
phosphorus, and is low in residues and free of scales, after rust removing, a solution is low in bubble and scale, maintenance of a bath solution is simplified, residues and scales are not liable to adhere to the workpieces and pollute the workpieces, the pH of a treating fluid is neutral, workpiece matrixes and operation equipment are not corroded and damaged, the workpieces have good
corrosion inhibition and rust protection performance
after treatment, and the rust protection problem of the workpieces during the transfer process is solved.