METHOD FOR REMOVAL OF RUST FROM SURFACE OF FERROUS METAL ARTICLES Russian patent published in 1995 - IPC

FIELD: protection against corrosion of metals. SUBSTANCE: the process is carried out by treatment of metallic articles first with a rust inhibitor containing 10-35 g/l ascorbic acid; 2-7 g/l complexing agent and at greater than 1 l water and then with a water-soluble corrosion inhibitor. The method can be defined as follows: it is technologically simple, ecologically pure, nontoxic, promotes high degree of removal of rust from the surface, eliminates pickling of the surface, does not allow disintegration of the surface while removing rust from the painted metallic surfaces and prevents further corrosion of the cleaned surface. EFFECT: greater efficiency of the method. 1 tbl