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高応答・大流量型油圧圧下装置の操業技術の確立

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川崎製鉄技報 KAWASAKI STEEL GIHO

Vol.13 (1981) No.3

高応答・大流量型油圧圧下装置の操業技術の確立

Improved Yield and Productivity by Development of Hydraulic AGC System with High-flow and High-response

平井 伸恒(Nobutune Hirai) 吉原 正典(Masanori Yoshihara) 井上 正敏(Masatoshi Inoue) 吉清 恭一(Kyoichi Kissei) 北尾 斉治(Nariharu Kitao) 馬場 和史(Kazushi Baba) 要旨 : 水島第 2 厚板工場では,従来の AGC の能力向上に加えて,平面形状の改善を目的とした MAS 圧延法のレベルアップをも目的として,大流量の油を高速・高応答で制御する油圧圧 下装置を導入した。この新しいタイプの油圧圧下装置の性能を十分発揮させるために行っ た設備面での最適ゲインの設定,バルブ特性の経時的変化の補償などの諸改善により,安 定した操業技術を確立できた。本装置の高速・高応答の機能をいかした AGC・MAS 圧延 のレベルアップにより歩留りが1.34%向上し,1980 年 1 月に注文歩留り 94.2%を達成した。 Synopsis :

At most of the moderm high-speed plate mills, conventional electric AGC system are replaced with hydraulic AGC sistems primarily to compensate for gaga deviation. The authors have applied this hydraulic AGC to improving MAS rolling. Since the hydraulic AGC system requires high response and control of a high flow, the optimum loop gain was determined by a theoretical analysis and applied to changes in the capacity of the servo-valve. By the AGC and MAS rolling using the hydraulic system, total product yield of plates has been improved by 1.34% to a new world record of 94.2% in Jan. 1980 at No.2 plate Mill of Mizushima Works, Kawasaki Steel Corporation.

(c)JFE Steel Corporation, 2003

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