• 検索結果がありません。

薄板圧延における形状とプロフィルの制御

N/A
N/A
Protected

Academic year: 2021

シェア "薄板圧延における形状とプロフィルの制御"

Copied!
13
0
0

読み込み中.... (全文を見る)

全文

(1)

川崎製鉄技報 KAWASAKI STEEL GIHO

Vol.11 (1979) No.1

薄板圧延における形状とプロフィルの制御

Flatness and Profile Contorol in Hot and Cole Rolling for Steel Strip

鑓田 征雄(Ikuo Yarita) 北村 邦雄(Kunio Kitamura) 片岡 健二(Kenji Kataoka) 中 川 吉右衛門(Kichizaemon Nakagawa) 要旨 : 熱延鋼板や冷延鋼板に要求される最も重要で基本的な品質に形状とプロフィルが挙げられ る。筆者らは 4 段圧延機による冷間と熱間の薄板圧延における形状とプロフィルの制御方 法について理論的かつ実験的な検討を行った結果,以下に示すような制御技術を確立でき た。(1) 冷間圧延において,形状やプロフィルを制御するためには,熱延母材の内部性状や プロフィルの適正化が最も重要になる。これらの適正化を行ない,さらにロールキャンバ, 圧延スケジュール,ロールベンディング力などの冷間圧延条件を適正化する方法を示した。 (2) 熱間圧延において,圧延の進行とともに仕上圧延機の圧下率配分を変更することによる 形状修正も考慮したクラウンの制御技術と台形クラウン付作業ロールによるエッジドロッ プの改善技術を開発した。 Synopsis :

One of the most important and principal qualities required of hot-and cold-rolled steel strip is good flatness and profile, Practical and theoretical studies into control systems on flatness and profile of the strip and their applications in full scale 4-high mills have led to the following conclusions and to the establishment of control method. (1) A hot-rolled strip having such uniformed internal property as that from continuously cast steel is desirable to get a cold rolled strip with good flatness. And a hot-rolled strip having convex crown of 30~60μ without surface abnormalities leading to ridge (so-called high spot) is suitable to get a good flatness and profile of cold -rolled strip. Furthermore, some cold rolling conditions are discussed in order to optimize work-roll camber, rolling schedule and roll bending force in cold rolling. (2) In hot rolling process, the crown control method using on-line draft distribution change among finishing stands and the edge drop improvement method by use of trapezoid-cambered roll have been developed successfully.

(c)JFE Steel Corporation, 2003

本文は次のページから閲覧できます。

要約版

(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)

参照

関連したドキュメント

In [9], it was shown that under diffusive scaling, the random set of coalescing random walk paths with one walker starting from every point on the space-time lattice Z × Z converges

In the proofs we follow the technique developed by Mitidieri and Pohozaev in [6, 7], which allows to prove the nonexistence of not necessarily positive solutions avoiding the use of

Inside this class, we identify a new subclass of Liouvillian integrable systems, under suitable conditions such Liouvillian integrable systems can have at most one limit cycle, and

Assuming that Ω ⊂ R n is a two-sided chord arc domain (meaning that Ω 1 and Ω 2 are NTA-domains and that ∂Ω is Ahlfors) they also prove ([KT3, Corol- lary 5.2]) that if log ˜ k

Our objective in Section 4 is to extend, several results on curvature of a contractive tuple by Popescu [19, 20], for completely contractive, covari- ant representations of

We study several choice principles for systems of finite character and prove their equivalence to the Prime Ideal Theorem in ZF set theory without Axiom of Choice, among them

This is applied in Section 3 to linear delayed neutral difference- differential equations and systems, with bounded operator-valued coefficients: For weighted LP-norms or

Where a rate range is specified, the higher rates should be used (a) in fields with a history of severe weed pressure, (b) when the time between early preplant tank mix and