著者

山本 普康 井上 剛 加藤 治 南田 勝宏

出版者

一般社団法人 日本機械学会

雑誌

日本機械学会論文集C編 (ISSN:03875024)

巻号頁・発行日

vol.65, no.631, pp.1255-1260, 1999

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The surfaces of roll material were dulled by Nd-YAG laser machining under some conditions of focal length cooling and number of beams for laser irradiation, and the rolling and sliding wear experiments were made in order to investigate the wear resistance of crater rims formed on the dulled surfaces. Then, the effects of distances from a focusing lens to a roll material, cooling conditions of air and water and combined irradiation of 2 beams on the wear resistance of crater rims were clarified. As a result, it has been found that the condition of 1 beam irradiation, water cooling and appropriate focal length is the best for the wear resistance of crater rims in the present series of experimental conditions.

著者

川並 高雄 山本 普康 大木 孝 西山 泰行 市田 弘三郎 村上 靖

出版者

社団法人日本鉄鋼協会

雑誌

鐵と鋼 : 日本鐡鋼協會々誌 (ISSN:00211575)

巻号頁・発行日

vol.69, no.13, 1983-09-03

著者

山本 普康 馬場 勘次 柿本 純忠 石原 明 吾郷 康人 新留 照英 稲葉 光延

出版者

社団法人日本鉄鋼協会

雑誌

鐵と鋼 : 日本鐡鋼協會々誌 (ISSN:00211575)

巻号頁・発行日

vol.79, no.3, pp.388-394, 1993-03-01

被引用文献数

1

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A demand of quality improvement for flatness and edge-drop has been recently increasing in cold rolling of steel strip. The accurate control systems of strip shape and edge-drop have been developed for the new tandem cold rolling mill in Yawata Works, which has 5 stands of 6 Hi-UC・WR shift mill. The control system of strip shape consists of the initial set-up for roll benders, intermediate roll shifts of all stands, a feedback control for roll benders and roll levelling of No.5 stand by using signals of the shape meter which is installed at the exit of No.5 stand. The control system of edge-drop consists of the initial set-up for work roll shifts of No.1∿4 stands and the feedforward control for work roll shifts of No.1∿4 stands by using signals of the crown meter which is installed at the entry of No.1 stand. Application of these control systems to the new tandem cold mill shows the good controllability of flatness and edge-drop in cold rolling of steel strip. The strip flatness is within ±0.7% of inclination in an overall length of strip, and the accuracy of edge-drop is 1.2μm in average and within ±3μm in an overall length of strip.