PRODUCT MOULDED BY HOT FORMING AND MANUFACTURING METHOD FOR PRODUCT MOULDED BY HOT FORMING Russian patent published in 2017 - IPC C22C38/06 C22C38/04 C22C38/58 C21D9/46 C25D5/26 

FIELD: metallurgy.

SUBSTANCE: product is obtained by hot foming of electrolytically galvanized steel sheet comprising wt %: C from 0.10 to 0.35, Si from 0.01 to 3.00, Al from 0.01 to 3.00, Mn from 1.0 to 3.5, P from 0.001 to 0.100, S from 0.001 to 0.010, N from 0.0005 to 0.0100, Ti from 0.000 to 0.200, Nb from 0.000 to 0.200, Mo from 0.00 to 1.00, Cr from 0.00 to 1.00, V from 0.000 to 1.000, Ni from 0.00 to 3.00, B from 0.0000 to 0.0050, Ca from 0.0000 to 0.0050, Mg from 0.0000 to 0.0050, iron and impurities are the rest. Specific weight of coating on each sheet surface is from 5 g/m² to 40 g/m². Galvanized plating layer contains from 0 g/m² to 15 g/m² of Zn-Fe-intermetallic compound and solid Fe-Zn-solution phase as the remaining amount. Number of dispersed particles with an average diameter of 10 nm to 1 mcm, presenting per 1 mm of galvanized plating layer length is from 1×10 particles to 1×10⁴ particles.

EFFECT: required adhesiveness of paint applied to surface of sheet without additional treatments.

6 cl, 7 dwg, 5 tbl