ANNEALING OF COLD-ROLLED METALLIC STRIP Russian patent published in 2014 - IPC C22F1/04 

FIELD: metallurgy.

SUBSTANCE: cold-rolled aluminium strip is continuously transported along a transportation route where at least one burner bridge with burners of direct flame action (DFI) for heating of a strip is located; besides, the burner bridge is located perpendicular to the strip movement direction; burners of direct flame action (DFI) are mutually located so that the strip can be heated throughout the width till the temperature is equal or almost equal. Speed of the strip passage through the burner bridge and heat capacity of burners is set so that the strip annealing can be performed at heat treatment and the strip can be coiled.

EFFECT: invention allows shortening a heat treatment process of an aluminium strip and improving stability of mechanical properties and quality of its surface.

7 cl, 6 dwg