Relative motion of wave on strip-analysis to flying wave
Based on the analysis of relative motion between wave and strip during hot strip rolling, the conception and definition of flying wave, staying wave and fixed wave are given. The study results show that the flying wave appears at the exit of the final stand, and is sustained and strengthened by the periodic impact of roller table. The condition of staying wave formation is the pitch of transfer rollers being the multiple times of wavelength. The occurrence of the flying wave can lead to the error in shape control by shape meter using laser triangle method, but the error can be decreased or eliminated by laser capture method.