METHOD OF HOT ROLLING HIGH-SILICON STEEL PLATE.

摘要

This invention relates to a method of hot rolling a high-silicon steel plate. According to the present invention, leader strips, each of which consists of a metallic material having superior cold and hot processability, are joined to both end portions of a high-silicon steel plate, and the other end portions of the leader strips are fixed to tension reels, the high-silicon steel plate being then subjected to hot rolling. The preheating of the rolling rolls can be done by passing preheated leader strips through the rolls. In order to carry out a reverse rolling operation, the two tension reels are set in the heat retaining furnaces, and the heat of the steel plate is retained between reverse rolling passes so as to set at least one leader strip to a length larger than the distance between the tension reels, whereby the temperature drop can be compensated for along the whole length of the steel plate.