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■■■■■■■■■■■■■■■■■■■ 川崎製鉄技報 KAWASAKI STEEL GIHO Vol.2 (1970) No.3 ■■■■■■■■■■■■■■■■■■■ |
| 千葉製鉄所ホットストリップミルの増強について Reinforcement of Hot Strip Mills at Chiba Works 黒津 亮二(Ryoji Kurotsu) 柳沢 忠昭(Tadaaki Yanazawa) 若林 浩一(Koichi Wakabayashi) 豊坂 秀夫(Hideo Toyosaka) |
| 要旨 : 千葉製鉄所第１，第２ホットストリップミルは生産能力の増強と高度の品質を得るため昭和43年，44年に，設備の大幅な改造，増強を行なった。第１ホットは，加熱炉，粗圧延機，仕上圧延機と全般にわたった改造を行なうとともに仕上圧延機にAGCを設置した。生産能力は従来の年間150万tから180万tとなった。第２ホットは，すでに増強の完成した４基の加熱炉，７基の仕上圧延機に続いて，今回はスラブヤード，粗圧延機，コイラー，コイルヤードを主体とした改造を行なった結果，生産能力はこれまでの年間310万tから360万tとなった。 |
| Synopsis : In order to step up the production capacity for hot strip as well as to make hot strip of still higher quality, Chiba Works executed a series of major renovation and remodeling in 1968 and 1969 respectively of its No.1 and No.2 hot strip mills. At No.1 hot strip mill, an overall remodeling was made of all its main installations such as the reheating furnace, the roughing mill and the finishing mill, while an AGC (automatic Gage Control) was newly installed. As the result, the annual capacity of No.1 hot strip mill was increased from the previous 1,500,000 tons to 1,800,000 tons, including stainless and silicon steel strip. As regards No.2 hot strip mill, its four reheating furnaces and seven finishing strip mills were not included in the renovation program of this time, because their reinforcement had already been completed previously. Therefore the remaining slab yard, roughing mill, coilers, and coil-yard were the main targets of recent repair and remodeling work. As the result, the annual capacity of No.2 hot strip mill was boosted from the previous 3,100,000 tons to 3,600,000 tons. |
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