Patent ID: 9650692
Date: 2017-05-16
CPC Classifications: B32B,B65D,C21D,C22C,C23C,C23F,Y02P,Y10T

Claim:
1. A method for the production of a packaging steel from a cold-rolled steel sheet of an unalloyed or low-alloy steel with a carbon content of less than 0.1 wt % and a manganese content of less than 0.4 wt %, the method comprising: coating the steel sheet with a metallic coating; heating the coated steel sheet with electromagnetic induction to temperatures of more than 700°, at a heating rate of more than 100 K/s, thereby annealing the steel sheet and melting the metallic coating; and quenching the annealed steel sheet with a cooling rate of at least 500 K/s, whereby in the steel a multi-phase structure is formed, which comprises ferrite and at least one of the structural constituents martensite, bainite and/or residual austenite.