新方式コンビネーションレベラーを有する薄鋼板用シャーラインの開発
1988 年 74 巻 11 号 p. 2137-2144
詳細
1988 年 74 巻 11 号 p. 2137-2144
Recently, the demand of customers for the flatness of cold strip becomes more and more strict. Therefore the effective shape correction device has been desired in a shear line for replacement of a conventional roller leveller.
Introducing tension leveller on the upstream of a shear line is probably a reliable answer, but its investment cost is large and extra space is necessary.
To solve this problem a new type of compact combination leveller was designed based on the theoretical analysis and experiments.
This consisted of non-drive stretch leveller, main leveller and double pinch rolls. Then it was introduced in a shear line. Using this combination leveller, the strip is elongated by repeated bending under superposed tension of pay off reel tension and idle leveller drawing force. Friction force of main leveller and pinch rolls causes this drawing force. The strip of satisfactory flatness almost the same as that by tension leveller can be obtained.
This new shear line was first constructed in 1986 and has been working successfully. Now the same type combination levellers are under designing and construction.
