PURPOSE: To provide the method, by which warp and vibration of a steel sheet continuously passing through can be effectively restrained under non-contact with a comparatively simple device.
CONSTITUTION: At the front face side and back face side of the steel sheet S continuously passing through, high-frequency current conducting passages 1a, 1b parallel to the steel sheet surfaces are set near the steel sheet S, and by conducting high-frequency current sufficient to saturate magnetically the steel sheet S into each of high-frequency current conducting passages 1a, 1b, reverse phase of the high-frequency current is induced in the steel sheet. By interaction between this induction current and the high-frequency current in the above each current conducting passage, magnetic pressure acting on the steel sheet surface is generated to restrain the warp and the vibration in width direction of the steel sheet S with the magnetic pressure acting on both surface of the steel sheet S.
ISHII TOSHIO
SUGIYAMA SHUNICHI
YADA AKIRA
| JP44007444A |