Method for the semi-continuous casting of a strand in a continuous casting machine, wherein the continuous casting machine has a mould with primary cooling, followed in the casting direction by a strand guide with multiple strand guiding rollers for guiding purposes and secondary cooling for cooling the strand, followed in turn by a tertiary cooling zone for the controlled or regulated cooling of the strand, said method comprising the following method steps: - introducing a dummy bar into the mould; - holding the dummy bar in the mould, with the result that a head of the dummy bar closes the mould in a fluid-tight manner; - beginning casting in the continuous casting machine, wherein molten metal is cast into the mould and a casting level and a partially solidified strand are formed in the mould; - starting the extraction of the dummy bar from the mould, wherein the dummy bar is extracted from the mould at a first extraction velocity v 1; - supporting and guiding the partially solidified strand in the strand guide, wherein the partially solidified strand is supported and guided by the strand guiding rollers and cooled by cooling nozzles of the secondary cooling; - performing controlled or regulated cooling of the partially solidified strand until the strand has solidified right through in the tertiary cooling zone; characterized in that, after the extraction starts, the extraction velocity v at which the dummy bar is extracted from the mould is increased to a second extraction velocity v 2, wherein v 2 > v 1, and in that, during the continuous casting, a thermal calculation model continuously calculates the actual temperature distribution of the strand, including the actual phase boundaries between the solid, pasty and liquid phases in the strand, depending on - a chemical composition of the molten metal, - the primary cooling in the mould, - the secondary cooling of the strand in the strand guide, wherein the extraction velocity v at which the dummy bar is extracted from the mould is set depending on the actual temperature distribution and/or the actual phase boundaries, in particular the actual position of the liquidus tip. - introducing a dummy bar into the mould; - holding the dummy bar in the mould, with the result that a head of the dummy bar closes the mould in a fluid-tight manner; - beginning casting in the continuous casting machine, wherein molten metal is cast into the mould and a casting level and a partially solidified strand are formed in the mould; - starting the extraction of the dummy bar from the mould, wherein the dummy bar is extracted from the mould at a first extraction velocity v 1; - supporting and guiding the partially solidified strand in the strand guide, wherein the partially solidified strand is supported and guided by the strand guiding rollers and cooled by cooling nozzles of the secondary cooling; - performing controlled or regulated cooling of the partially solidified strand until the strand has solidified right through in the tertiary cooling zone; characterized in that, after the extraction starts, the extraction velocity v at which the dummy bar is extracted from the mould is increased to a second extraction velocity v 2, wherein v 2 > v 1, and in that, during the continuous casting, a thermal calculation model continuously calculates the actual temperature distribution of the strand, including the actual phase boundaries between the solid, pasty and liquid phases in the strand, depending on characterized in that, after the extraction starts, the extraction velocity v at which the dummy bar is extracted from the mould is increased to a second extraction velocity v 2, wherein v 2 > v 1, and in that, during the continuous casting, a thermal calculation model continuously calculates the actual temperature distribution of the strand, including the actual phase boundaries between the solid, pasty and liquid phases in the strand, depending on - a chemical composition of the molten metal, - the primary cooling in the mould, - the secondary cooling of the strand in the strand guide, wherein the extraction velocity v at which the dummy bar is extracted from the mould is set depending on the actual temperature distribution and/or the actual phase boundaries, in particular the actual position of the liquidus tip.