TABLET FOR HOT DIP GALVANIZATION OF METAL PRODUCTS (VARIANTS) AND METHOD OF ITS PREPARATION Russian patent published in 2018 - IPC C23C2/06 B22F3/02 B22F3/24 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy and can be used for hot galvanizing of metal products, namely, tablets for alloying a zinc melt during hot-dip galvanizing. Variants of a tablet for doping a zinc melt during the hot galvanizing of metal articles containing nickel powder, flux particles, a wax or polymer coating are proposed. In this case, the sample of nickel powder in the tablet consists of two fractions: coarse-grained with particle sizes in the range from 100 to 300 mcm in an amount of 65–75 % of the weight of the sample containing the proportion of nickel particles deposited on the bottom of the galvanizing bath, and fine-grained – with particle sizes ranging from 5 to 20 mcm in an amount of 25 to 35 % of the weight of the sample. A method for manufacturing a tablet for doping a zinc melt during the hot-dip galvanizing process is also provided.

EFFECT: technical result of the invention is reduction of nickel consumption during hot-dip galvanizing of metal products and the provision of a sufficiently high level of environmental safety.

12 cl, 1 dwg, 2 tbl, 3 ex