Method of reducing the wrinkles formed in heating zones, by radiant tubes,
of continuous heat treatment lines for metal strip, such as annealing or
galvanizing lines, the said strip passing over transporting and/or return
rollers in the said furnaces, the said method, which consists in modifying
the thermal state of the rollers, being characterized in that the said
modification is made directly by varying the heating by the said radiant
tubes located near the rollers, thereby directly controlling the heat flux
emitted by the radiant tubes towards the rollers.
