METHOD OF FORMING PARTS WITH COATING AND PARTS THUS PRODUCED Russian patent published in 2013 - IPC B32B15/01 C21D1/70 

FIELD: process engineering.

SUBSTANCE: invention relates to metallurgy. Proposed method comprises the following stages: hot- or cold-rolling of steel sheet including steel backing and pre-applied coating of aluminium-silicon alloy. Cutting said steel sheet in billet with said coating, heating it in protection-free atmosphere to T_i making from T_c-10°C to T_c where T_c is the said coating eutectic or solidus temperature. Heating the billet from T_i to T_m in protection-free atmosphere at heating rate V where V is rate of heating from T_i to T_t for obtaining heat billet with coating. Holding heated billet with coating at said T_t for time t_m. Then billet is hot-formed to produce the part with coating and cooled down to produce microstructure in said steel backing including at least, one component selected form martensite and bainite.

EFFECT: high mechanical strength, higher resistance to lamination and corrosion.

21 cl, 6 dwg