| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.15 ( October 1986 ) ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| An Outline of New Block Mill and Its Operating Results Akio Noda, Hidenori Kondoh, Kouichi Konishi, Shigeyuki Komatsu, Minoru Fukuda |
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Synopsis : To meet demands for higher quality and higher productivity of wire rods, Mizushima Works additionally installed a wire-rod finishing block mill line to the existing bar mill, and started the operation of this mill line as a new wire and bar mill in September 1984. This new plant realized the manufacture of multi-king and multi-size products including straight bars, bars-in-coil and wire-rods using a single strand mill. For this purpose, the new plant added equipment-functions related to high-speed rolling and high-speed winding of wire rods, and introduced various kinds of process control to achieve super-high speed rolling. The entire process ranging from raw material acceptance to product delivery was under computerized control, and high-efficiency operation was realized by the mill-line automatic setting control. The operational record of the new wire-rod and bar plant for the past year was satisfactory, showing monthly average speed exceeding 100 m/s (5.5 mmΣ) and dimensional accuracy stabilized at }0.2mm. |
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