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4ロールミルによる高寸法精度細径線材・4角線材の開発

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川崎製鉄技報

KAWASAKI STEEL GIHO Vol.34(2002)No.1 新機能線材・棒鋼小特集号

4 ロールミルによる高寸法精度細径線材・4 角線材の開発

Development of High Dimensional Accurcy Smaller Diameter Wire Rods and Square Coils Manufactured by 4-Roll Mill

桜井 智康 (Sakurai, T.) 坂本 俊夫 (Sakamoto, T.) 武田 了 (Takeda, R.) 要旨 : 川崎製鉄では,1994 年の棒鋼用 4 ロールミルに続き 1998 年に線材用 4 ロールミルを開発・ 導入した。そして,4 ロール圧延の特性を利用したさまざまな新技術の開発により,4.2~ 85mmφ,12.7~27mm 角までの線材および棒鋼の高寸法精度・サイズフリー圧延生産体制 を構築した。このことにより,自動車用鋼材に代表される特殊鋼市場において,最終製品 寸法形状とでき得るかぎり相似形で二次加工量が少なく,かつ高寸法精度な線材や棒鋼を 熱間圧延で製造することが可能になった。 Synopsis :

After introducing 4-roll mills for steel bars in 1994, Kawasaki Steel developed and introduced it for wire rods in 1998. Then, thanks to the development of various new technologies based on the characteristics of 4-roll rolling method, the company succeeded in constructing a highly precise-measurement and size-free rolling production system for steel bars and wire rods ranging from 4.2 to 85mm in diameter and steel square coils from 12.7 to 27mm on a side. Able to manufacture hot-rolled steel bars and wire rods with such high measurement precision, Kawasaki Steel can provide products to the automobile steel and other special steel markets in sizes and shapes as similar as possible to the finished products, thus minimizing further processing.

(c)JFE Steel Corporation, 2003

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