Method of producing a continuous strip-shaped composite material , comprising the steps of: (i) providing a base material of metal which is unwound in the form of a metal strip , which is formed from steel or a steel alloy, from a first coil unwinding device and providing at least one cladding material of metal which is unwound in the form of a metal strip , which is formed from steel or a steel alloy, from a second coil unwinding device , (ii) bringing together the metal strip unwound from the first coil unwinding device and the metal strip unwound from the second coil unwinding device , and (iii) rolling the metal strips , which have been brought towards one another in direction, so that a single continuous strip-shaped composite material consisting of the base material and the cladding material is thereby formed by roll-bonding, wherein prior to step (ii) the metal strips unwound from a respective coil unwinding device are descaled through use of high-pressure water and the rolling of the metal strips is executed in step (iii) as hot rolling, characterised in that the first coil unwinding device and the second coil unwinding device are received during the step (i) in a heatable environment under a protective gas atmosphere so that prior to the steps (ii) and (iii) a predetermined temperature of at least 720° C is set for the metal strips unwound from the coil unwinding devices , the bringing together of the metal strips in step (ii) is carried out in the hot state in which these metal strips each have a temperature of at least 720° C, prior to the step (iii) the surface temperature of all metal strips at the mutually opposite surfaces thereof is increased by use of induction heating means and during the step (ii) and prior to the step (iii) the metal strips unwound from each coil unwinding device are conducted in a protective gas atmosphere . (i) providing a base material of metal which is unwound in the form of a metal strip , which is formed from steel or a steel alloy, from a first coil unwinding device and providing at least one cladding material of metal which is unwound in the form of a metal strip , which is formed from steel or a steel alloy, from a second coil unwinding device , (ii) bringing together the metal strip unwound from the first coil unwinding device and the metal strip unwound from the second coil unwinding device , and (iii) rolling the metal strips , which have been brought towards one another in direction, so that a single continuous strip-shaped composite material consisting of the base material and the cladding material is thereby formed by roll-bonding, wherein prior to step (ii) the metal strips unwound from a respective coil unwinding device are descaled through use of high-pressure water and the rolling of the metal strips is executed in step (iii) as hot rolling, characterised in that the first coil unwinding device and the second coil unwinding device are received during the step (i) in a heatable environment under a protective gas atmosphere so that prior to the steps (ii) and (iii) a predetermined temperature of at least 720° C is set for the metal strips unwound from the coil unwinding devices , the bringing together of the metal strips in step (ii) is carried out in the hot state in which these metal strips each have a temperature of at least 720° C, prior to the step (iii) the surface temperature of all metal strips at the mutually opposite surfaces thereof is increased by use of induction heating means and during the step (ii) and prior to the step (iii) the metal strips unwound from each coil unwinding device are conducted in a protective gas atmosphere . <EOS>