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1. 发明专利

JPS60250808A COLD ROLLING METHOD OF CLOSE-PACKED HEXAGONAL METALLIC SHEET 失效
公开(公告)号：JPS60250808A
公开(公告)日：1985-12-11
申请号：JP10559884
申请日：1984-05-24
申请人： KOBE STEEL LTD
发明人： KOKUBO ICHIROU , MIZUTA TOKUO , OOIKE YOSHIO , SATOU JIYUNJI , NISHIMURA TAKASHI , HATSUTORI SHIGEO , FUKUDA MASATO , MURAOKA TETSUHIRO , KOYAMA YUUJI
IPC分类号： C22F1/00 , B21B1/22 , B21B1/28 , B21B3/00 , B21B3/02 , B21B45/00 , C22F1/18
摘要： PURPOSE:To produce a close-packed hexagonal metallic sheet having good surface accuracy with high productivity by cold rolling the sheet at a specific speed or below in the initial period of rolling then cold rolling the same at the specific speed or above. CONSTITUTION:The speed in the initial period of rolling is set at a low speed of =100m/min is continued, by which the rolled sheet having extremely high surface accuracy is smoothly produced thereafter with virtually no oil pits and seizure.

2. 发明专利

JPS606213A CONTROLLING METHOD OF SNAKING OF STRIP 失效
公开(公告)号：JPS606213A
公开(公告)日：1985-01-12
申请号：JP11436083
申请日：1983-06-27
申请人： KOBE STEEL LTD
发明人： FURUKUBO ICHIROU , MIZUTA TOKUO , OOIKE YOSHIO , SATOU JIYUNJI , HIRATA KIYOSHI
IPC分类号： B21B37/00 , B21B37/68
摘要： PURPOSE:To make control practicable even if the time lag of a screw-down system is large by determining the controlled variable to be applied to the screw-down device in order to perform titled control of a tandem rolling device in accordance with the sum of the difference between the right and left rolling loads of the fore stage stand and the differentiated value thereof. CONSTITUTION:There is no output from an adder 13 if a strip S travels normally and a difference between rolling loads p=0. However, when the tailing-through of the strip S arises in the i-2 stand, the strip S begins to snake in the i-1 stand and a difference (p) (+ and - polarities on the operating and driving sides of the stand) in the size corresponding to the rate of snaking arises. Such difference is detected with a calculator 11 and at the same time the fluctuation of the difference (p) per unit time is detected with a mechanical differentiator 12. The added output converted to a position signal with a coefft. device 14 is collated respectively with screw down positions Xr, Xl by calculators 15R, 15L and commands Mr, Ml for the screw down positions are emitted from the respective calculators. A servocontrol valve 16R (same with 16L) controls the amt. of the oil in a screw-down cylinder 4R and the direction thereof according to the command Mr so that the difference between said command and the output Xr from a position detector 4R is made zero.

3. 发明专利

JPS60250809A COLD ROLLING METHOD OF CLOSE-PACKED HEXAGONAL METALLIC SHEET 失效
公开(公告)号：JPS60250809A
公开(公告)日：1985-12-11
申请号：JP10559984
申请日：1984-05-24
申请人： KOBE STEEL LTD
发明人： KOKUBO ICHIROU , MIZUTA TOKUO , OOIKE YOSHIO , SATOU JIYUNJI , NISHIMURA TAKASHI , HATSUTORI SHIGEO , FUKUDA MASATO , MURAOKA TETSUHIRO , KOYAMA YUUJI
IPC分类号： C22F1/00 , B21B1/22 , B21B1/28 , B21B3/00 , B21B3/02 , B21B45/02 , C22F1/18
摘要： PURPOSE:To smooth the surface of rolling rolls without oil pits and seizure and to obtain a rolled sheet consisting of a close-packed hexagonal metal having exceptionally high surface accuracy by subjecting the surface of the rolls to stick coating of a metal to be rolled in the initial period of starting cold rolling. CONSTITUTION:A metallic sheet of close-packed hexagonal crystal is rolled without supply of a rolling mill lubricant or with supply of the rolling mill lubricant having poor lubricity in the initial period of rolling in the case of cold rolling said sheet by using the rolling rolls finished by grinding. The metal to be rolled is thereupon uniformly stuck to the surface of the rolling roll. The sheet is thereafter cold-rolled under the supply of the lubricating agent having excellent lubricity. The problems such as the generation of oil pits and the increase in rolling load are therefore eliminated by initially formed stuck coating layer and the close-packed hexagonal metallic sheet having the excellent surface accuracy is cold-rolled.

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