ホットストリップミルにおけるクロップロス低減法(<特集>圧延歩留り向上の技術と理論)

概要

論文の詳細を見る
Techniques to decrease crop loss in hot strip mill become important under introducing high width reduction process, which makes better relation between continuous casting plant and hot strip mill. By plasticine medel rolling experiment, it is observed how the crop grows under the rolling condition at roughing train in hot strip mill. Forming top end and bottom end of slab into a certain shape before rolling is effective to decrease crop growth at both ends of slab. The reasons of that effect are, (1) to lower the width reduction by edging rolling at slab end, (2) to cancel the crop growth after edging rolling. Results of experiment with plasticine on pre-forming by parallel edging press machine have shown that it is necessary to determine the optimum pre-forming condition (the width reduction and the contact length between slab and press) according to the total width reduction. One method to control the crop length is explained. It has been confirmed by actual mill test at Mizushima hot strip mill that pre-forming by edging press is effective in hot rolling of steel and control of the crop length is possible.
社団法人日本鉄鋼協会の論文
1981-11-01