Method of joining steel sheet bars and a joining apparatus

摘要

PCT No. PCT/JP91/01029 Sec. 371 Date Apr. 2, 1992 Sec. 102(e) Date Apr. 2, 1992 PCT Filed Aug. 1, 1991 PCT Pub. No. WO92/02313 PCT Pub. Date Feb. 20, 1992.This invention rapidly and surely joins sheet bars to each other for continuously hot rolling in a high productivity by a combination of a treatment that the front end portion and the back end portion of these sheet bars are contacted and heated at such a contact region by applying alternating magnetic fields so as to pass in a thickness direction of the sheet bar with a treatment of pushing at least one of these sheet bars.