METHOD OF PREPARING POWDERED MIX FOR THERMODIFFUSION ZINC-PLATING Russian patent published in 2002 - IPC

FIELD: metalworking. SUBSTANCE: invention relates to thermochemical treatment of surfaces of parts by way of thermodiffusion zinc-plating in powdered zinc-containing mixes thereby realizing anticorrosion treatment of parts. Proposed method involves mixing zinc powder with inert filler and activator (no more than 2% of the weight of zinc), inert filler being preliminarily divided into two portions to modify one of them by mixing it with activator to form activated filler. The other portion of inert filler simultaneously with zinc powder and above-prepared activated filler (weight ratio 50.0-99.9/0.6- 40.0/0.4-10) are loaded into container with parts to be treated. Loaded components are mixed directly in the course of zinc plating. EFFECT: increased efficiency of zinc-plating composition, multiplicity of reusing inert filler, and simplified process. 7 cl, 1 tbl, 5 ex