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1. 发明专利

JPS58128222A COILING METHOD OF ROLLED STOCK 失效
公开(公告)号：JPS58128222A
公开(公告)日：1983-07-30
申请号：JP1044882
申请日：1982-01-26
申请人： KAWASAKI STEEL CO
发明人： OKABE TOSHIROU , NAOI TAKAYUKI
IPC分类号： B21C47/02
摘要： PURPOSE:To perform coiling control effective for restraining telescoping by detecting bending roll reaction, pinch roll reaction and coiling tension, calculating coiling form evaluation index and adjusting rolling reduction of the bending roll. CONSTITUTION:An arithmetic unit 19 determines bending roll reaction F2 from plate width (b) and total reaction F2' of bending roll. An arithmetic unit 20 determines pinch roll reaction F3 from plate thickness (b) and total reaction F3' of pinch roll. An arithmetic unit 22 determines coiling tension T3 from plate width (b) and total coiling tension T3'. An arithmetic unit 23 determines tensile stress SIGMAt of rolled stock from plate thickness (t) and coiling tension F3. An arithmetic unit 24 determines index alpha from bending roll reaction F2, pinch roll reaction F3 and tensile stress SIGMAt of rolled stock. An arithmetic unit 25 outputs a bending roll operation signal S to a comparison arithmetic unit 26 from the index of the arithmetic unit 18 and said index alpha. When present draft position exceeds controlled position, the comparison arithmetic unit 26 sends a processed signal of the operation signal S to a rolling driving device 14 to control the bending roll 10.

2. 发明专利

JPS5868422A COILING METHOD OF ROLLED MATERIAL 失效
公开(公告)号：JPS5868422A
公开(公告)日：1983-04-23
申请号：JP16638881
申请日：1981-10-20
申请人： KAWASAKI STEEL CO
发明人： OKABE TOSHIROU , NAOI TAKAYUKI
IPC分类号： B21C47/02
摘要： PURPOSE:To obtain a coil of a rolled material free from edge unevenness and slack, by setting a rolling reduction of a roll in accordance with the rigidity and thickness of a rolled material, and making a coil-shape evaluation index to a specified value, in rolling reduction of the material with a bending roll, and coiling. CONSTITUTION:At the inlet side of pinch rolls 7 and 8, a rolled material 1 is subjected to rolling reduction downward by a bending roll 10 and then is coiled. At that time, a reaction F2 of the bending roll 10, a reaction F3 of the pinch rolls 7 and 8, and a coiling tension T3, respectively per unit width of the material 1, and the sheet thickness (t) are measured. Next, rolling reduction of the bending roll 10 is set in accordance with the rigidity and thickness of the material 1. Then a coil-shape evaluation index alpha=(F2+F3).deltat (where deltat=T3/t), representing comprehensively a retarding effect for a moving in the direction of sheet width and an effect of coiling tension, is made to be a specified value.

3. 发明专利

JPS58209413A METHOD AND DEVICE FOR ADJUSTING RUNNING OF STRIP IN TANDEM ROLLING MILL 失效
公开(公告)号：JPS58209413A
公开(公告)日：1983-12-06
申请号：JP9210182
申请日：1982-06-01
申请人： KAWASAKI STEEL CO
发明人： ISHIHARA TOORU , OKABE TOSHIROU
IPC分类号： B21B37/00 , B21B37/68 , B21B41/10
摘要： PURPOSE:To effectively prevent a strip from meandering, by adjusting the distribution of the tension of a strip in the width direction of the strip by slanting the looper roll of a looper in a vertical plane in accordance with the movement in the width direction of the strip running through stands. CONSTITUTION:In a tandem rolling mill equipped with a looper 8 between its rolling stands, a looper roll 4 of the looper 8 is slanted in a vertical plane in accordance with the movement of a strip 1 in the direction of the width of the strip 1 running through the rolling stands to adjust the distribution of the tension of strip in the direction of its width. That is, a proper tension is provided to the strip 1 by rocking the looper 8 around a fulcrum A and bringing rotatably the roll 4 installed on the tip of the looper 8 into contact with the strip 1.

4. 发明专利

JPS5689314A AUTOMATIC CONTROL METHOD OF SHEETTMETAL GAUGE IN GAUGE METER SYSTEM 失效
公开(公告)号：JPS5689314A
公开(公告)日：1981-07-20
申请号：JP16658779
申请日：1979-12-21
申请人： KAWASAKI STEEL CO
发明人： OKABE TOSHIROU , NAOI TAKAYUKI
IPC分类号： B21B37/18
摘要： PURPOSE:To improve sheet-metal gauge accuracy in actual rolling by correcting a gauge meter formula by the difference for the extent of elastic deformation of rolling machines of the time when they are grasping a cold steel plate under pressure and of the time when they are rolling the same actually. CONSTITUTION:If the difference (y) of said extent of elastic deformation with respect to load is calculated according to parameters from a split-plot model, straight lines (a)-(e) are obtained and said extent is expressed by the formula (a1-a8 are constant) unlike load F and sheet-metal width W. Sheet-metal gauge controlling is performed by using the gauge meter formula H' corrected by this difference. In the formula, H: the calculated sheet-metal gauge at the center of the sheet-metal width on the roll outlet side, S0: work roll gap or screw-down screw position, M: mill constant deltaoil: oil film correction term, alpha: offset value of mechanical clatter or the like.

5. 发明专利

JPS5573413A CONTROLLING METHOD FOR SHEET THICKNESS IN ROLLING OF SHEET MATERIAL 失效
公开(公告)号：JPS5573413A
公开(公告)日：1980-06-03
申请号：JP14606778
申请日：1978-11-28
申请人： KAWASAKI STEEL CO
发明人： KIKUKAWA HIROYUKI , NAOI TAKAYUKI , OKABE TOSHIROU , BABA KAZUNORI
IPC分类号： B21B37/18
摘要： PURPOSE:To make possible the exact thickness control even though the roll material and shape are changed, by carrying out the thickness control according to the formula in which the term representing the roll deflection is corrected with Young's modulus, etc., being based on the gaugemeter formula. CONSTITUTION:The gaugemeter formula of BISRA being used in the conventional thickness control for the rolled sheet, is corrected into the formula (I) [H is for predicted thickness mm, S0 for roll gap mm, M for mill stiffness t/mm, F for rolling load, t for correction term for oil film pressure rhooil(mm), OFFSET for offset value mm, and Y for correction term corresponding to the roll]. Above correction term Y is given by the formula (II), in which E is for Young's modulus of the roll, I for second moment of area, F for rolling load, and W for breadth of rolled material. As above stated, even if the material and shape of the roll are changed, the deflection of the roll due to these changes is corrected; hereby, more exact control of the thickness can be carried out as compared with the conventional method taking the mill stiffness M as constant.

6. 发明专利

JPS58173009A METHOD FOR CORRECTING MEANDERING OF MATERIAL TO BE ROLLED IN TANDEM ROLLING MILL 失效
公开(公告)号：JPS58173009A
公开(公告)日：1983-10-11
申请号：JP5610282
申请日：1982-04-06
申请人： KAWASAKI STEEL CO
发明人： OKABE TOSHIROU
IPC分类号： B21B37/00 , B21B37/68 , B21B41/10
摘要： PURPOSE:To control a slant angle of looper roll in accordance with the movement of a material to be rolled in its width direction, and to correct the meandering of the material without deteriorating the distribution of sheet thickness, by supporting looper rolls in a state capable of slanting against the width direction of the material in a horizontal plane. CONSTITUTION:Looper rolls 4 for correcting the meandering of a material 1 to be rolled are installed respectively at stands F5, F6, F7 locating at the rear stage where the meandering generates easily. When the meandering of the material 1 is detected by a detector 10, a signal is outputted to a device 11 used for controlling the slant of looper roll. Each device 11 expands and cntracts a cylinder 9 of the looper roll 4 to slant the roll 4 to the direction of correcting the meandering, around a fulcrum G set as a center. Next, when the completion of correcting the meandering is detected, a feed back control to restore the slant of roll 4 each is performed.

7. 发明专利

JPS583712A CONTROLLING METHOD FOR SHEET SHAPE IN ROLLING MILL 失效
公开(公告)号：JPS583712A
公开(公告)日：1983-01-10
申请号：JP10001081
申请日：1981-06-26
申请人： KAWASAKI STEEL CO
发明人： OKABE TOSHIROU , NAOI TAKAYUKI , HIRASAKI SHIYUUICHI , MIZUKAMI SUSUMU , HIROHATA KAZUHIRO , FUJIWARA TAKANORI
IPC分类号： B21B37/28 , B21B37/00 , B21B37/38
摘要： PURPOSE:To enable an accurate titled controlling, by predicting the change of sheet shape within a time lag of a feed-back controlling while the rolling speed changes and performing jointly a feed-forward controlling in accordance with said controlling and predicted results. CONSTITUTION:A sheet shape at the exit of the final stand 12 having a sheet shape controlling means consisting of a bender and a press-down device 20 is detected by a shape detector 16 to be controlled by a feed-back controlling system constituting of a shape discriminating device 22 and a feed-back controlling device 24. At that time, while the rolling speed is changed, the change of sheet shape caused by he change of the rolling speed within a time lag of the feed- back controlling is predicted, and a necessary operating quantity DELTAF of the shape controlling means is computed by a correcting quantity operator 38 of a feed-forward controlling system in accordance with the predicted results. Then a bender operating quantity F of a controlling device 24 and the operating quantity DELTAF are added to control the shape controlling means of the stand 12 by the feed-forward controlling through comparison operators 42 and 50.

8. 发明专利

JPS57106407A BRIGHT ROLLING METHOD 失效
公开(公告)号：JPS57106407A
公开(公告)日：1982-07-02
申请号：JP18147080
申请日：1980-12-22
申请人： KAWASAKI STEEL CO
发明人： OKABE TOSHIROU , NAOI TAKAYUKI , ETOU KOUJI
IPC分类号： B21B1/28 , B21B1/22
摘要： PURPOSE:To prevent occurrences of heat streaks without lowering the rolling efficiency and increasing consumption of the rolling mill oil, by performing the bright rolling at the final rolling stand after performing the dull rolling in the course of the bright rolling of cold rolled steel sheets. CONSTITUTION:In a course of a bright rolling of cold rolled steel sheets with a tandem rolling mill, the surface roughness of steel sheets to be rolled is roughened by performing dull rollings on them by at least >=1 rolling stands except the final rolling stand, and the bright rolling is performed at the final rolling stand. When this procedure is applied, heat streaks can be prevented with a simple method without sacrificing the high rolling reduction and the high speed rolling.

9. 发明专利

JPS5868423A COILING METHOD FOR MATERIAL TO BE ROLLED 失效
公开(公告)号：JPS5868423A
公开(公告)日：1983-04-23
申请号：JP16638981
申请日：1981-10-20
申请人： KAWASAKI STEEL CO
发明人： OKABE TOSHIROU , NAOI TAKAYUKI
IPC分类号： B21C47/02
摘要： PURPOSE:To obtain a coil free from irregularity of edge and slackness by changing setting of rolling reduction in accordance with change of rigidity of material to be rolled and diameter of coil and maintaining the coil form evaluation index at a fixed value in coiling a material to be rolled by subjecting it to rolling reduction with a bending roll. CONSTITUTION:In the entrance side of pinch rolls 7, 8, a material to be rolled 1 is subjected to downward rolling reduction by a bending roll 10 and coiled. At this time, reaction force of bending roll per unit width of material to be rolled F2, pinch roll reaction coiling tension T3 and plate thickness (t) are measured. Then, setting of rolling reduction of the bending roll is changed in accordance with the rigidity of the material to be rolled and chage of diameter of the coil 6 during coiling. Coil form evaluation index alpha=(F2+F3).deltat (where deltat=T3/t) that indicate moving suppressing effect in the direction of width and coiling effect collectively is made constant.

10. 发明专利

JPS57177816A PREVENTING METHOD OF INWARD SQUEEZING IN TANDEM MILL 失效
公开(公告)号：JPS57177816A
公开(公告)日：1982-11-01
申请号：JP6374181
申请日：1981-04-27
申请人： KAWASAKI STEEL CO
发明人： OKABE TOSHIROU , NAOI TAKAYUKI
IPC分类号： B21B39/14 , B21B33/02 , B21B37/00
摘要： PURPOSE:To prevent the generation of inward squeezing of a rolling mill, by opening a side guide of a rolling stand of the following stage simultaneously after a rolling material passes through a stand of the preceding stage in rolling a steel plate by a hot tandem mill. CONSTITUTION:Rolling load of, for instance, the 3rd stand is detected by a load cell 6 to transmit the detected output to a side-guide controlling device 7, in hot rolling a steel plate 1 by a multistand tandem mill. A side-guide driving device 5 of a rolling stand placed at the two stages of stands ahead is controlled to open a side guide 4 actuated by a detecting output, which is generated by detecting a sudden change of rolling load caused by passing of the tail end of the material 1 through the 3rd stand, in a controlling device 7. Next, the load cell 6 and the device 7 are arranged respectively at the next stand, in the same manner, to detect the passing through of the tail end of the material 1, and the side guide placed at the two stages of stands ahead from said stand is opened to prevent the generation of inward squeezing.

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