Method of producing a metallic product in which in a continuous casting plant liquid metal is extracted as a slab from a mould vertically downwardly in a conveying direction, guided along a strip guide and deflected into the horizontal, wherein the slab is heated in an oven behind the continuous casting plant, characterised in that the method comprises the steps: a) in a first cooling zone behind the mould in conveying direction: intensive cooling of the slab to such an extent that a structural conversion from austenite into ferrite takes place in the edge zone of the slab near the surface; b) in a first heating zone behind the first cooling zone in conveying direction: reheating of the slab to such an extent that a structural conversion from ferrite into austenite takes place in the edge zone of the slab near the surface, wherein the reheating of the slab is carried out by heat equalisation in the slab in that a heat flow is allowed from the interior of the slab to the slab surface; c) in a second cooling zone behind the first heating zone in conveying direction: intensive cooling of the slab to such an extent that a structural conversion from austenite into ferrite takes place in the edge zone of the slab near the surface; and d) in a second heating zone behind the second cooling zone in conveying direction: reheating of the slab to such an extent that a structural conversion from ferrite into austenite takes place in the edge zone of the slab near the surface, wherein after step d) is carried out still at least one further intensive cooling of the slab is carried out in such a way that a structural conversion from austenite into ferrite occurs in the edge zone of the slab near the surface, wherein after the further intensive cooling of the slab has been carried out still at least one further heating of the slab is carried out to such an extent that a structural conversion from ferrite into austenite occurs in the edge zone of the slab near the surface, wherein the steps a) to c) are carried out while the slab is still oriented in the vertical and wherein the last heating of the slab is carried out in the oven or by inductive heating. a) in a first cooling zone behind the mould in conveying direction: intensive cooling of the slab to such an extent that a structural conversion from austenite into ferrite takes place in the edge zone of the slab near the surface; b) in a first heating zone behind the first cooling zone in conveying direction: reheating of the slab to such an extent that a structural conversion from ferrite into austenite takes place in the edge zone of the slab near the surface, wherein the reheating of the slab is carried out by heat equalisation in the slab in that a heat flow is allowed from the interior of the slab to the slab surface; c) in a second cooling zone behind the first heating zone in conveying direction: intensive cooling of the slab to such an extent that a structural conversion from austenite into ferrite takes place in the edge zone of the slab near the surface; and d) in a second heating zone behind the second cooling zone in conveying direction: reheating of the slab to such an extent that a structural conversion from ferrite into austenite takes place in the edge zone of the slab near the surface,