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61. 发明专利

JPS57137019A THICKNESS CONTROLLING METHOD IN ELONGATOR FOR TUBE 失效
公开(公告)号：JPS57137019A
公开(公告)日：1982-08-24
申请号：JP2210281
申请日：1981-02-17
申请人： KAWASAKI STEEL CO
发明人： IMAE TOSHIO , EJIMA AKIO
IPC分类号： B21B17/04 , B21B17/10 , B21B37/78
摘要： PURPOSE:To thin the tube end in circumferntial direction without complicating construction or control of pressing down mechanism in titled control of tube making that involves piercing, elongation and drawing processes, by changing the position of a mandrel bar provided with a large diameter part in longitudinal direction. CONSTITUTION:For instance, the tube end is made thinner than other parts at the time of cutting in and coming out of a tube in No.5 and No.6 stands of a mandrel mill 18. In this case, when the tip of the tube is cut in No.6 stand, large diameter parts 20a, 20b of the mandrel bar 20 are positioned at pressing parts of No.5 and No.6 stands and the bar 20 is advanced with progress of rolling. At this time, the large diameter part 20c is positioned in the middle of No.4 and No.5 stands. Since it is necessary to continue thinning rolling until the tube material for which thinning rolling is completed passes No.6 stand, the distance between rear ends l3+l4 is made smaller than the distance L between two stands. While the center of the next tube material is being rolled, the bar 20 may be either advance or stop, and rolling of the rear end of the tube is effected in the same way as the tip of the tube.

62. 发明专利

JPS54132683A STEEL PLATE FOR WORKING IRONING 失效
公开(公告)号：JPS54132683A
公开(公告)日：1979-10-15
申请号：JP4055178
申请日：1978-04-06
申请人： KAWASAKI STEEL CO
发明人： IMAE TOSHIO , KOSUGE NORIO , TSUGAWA SHIYUNICHI , ABE HIDEO
IPC分类号： B32B15/082 , B32B15/04 , B32B15/08

63. 发明专利

JPH11151512A ROLLING METHOD FOR GAUGE H STEEL 失效
公开(公告)号：JPH11151512A
公开(公告)日：1999-06-08
申请号：JP32098097
申请日：1997-11-21
申请人： KAWASAKI STEEL CO
发明人： KOUJIYOU MICHIYA , IMAE TOSHIO , AOKI HIDEMI , MIURA YOSHINORI , SHIGEMORI HIROYASU
IPC分类号： B21B37/00 , B21B1/08 , B21B1/088
摘要： PROBLEM TO BE SOLVED: To improve a flange width precision in a longitudinal direction by obtained a flange width distribution of a preceding material in a longitudinal direction in rolling and based on this data, changing either a flange thickness of next material rough rolling or a web thickness or both rolling set values. SOLUTION: A dimension measurement device 3 is arranged at an outlet side of a finish universal rolling mill 4 or a rough universal rolling mill 1, a distribution of a flange width of a rolled gauge H steel in a longitudinal direction is measured. During rolling, based on this measured result of the device 3, when it is discriminated that an unstable part flange width of tip/rear end parts of a gauge H steel shape after finish or rough rolling of a rolled preceding material under a basic rolling draft is wider than a flange width at a stable part, a rolling set value is changed so that a difference in drafts between flange and web at a rough rolling first half pass for a next material is increased. Also, in the case of the opposite, either one or both of the drafts of flange and web is changed by opposite operation and rolling is conducted.

64. 发明专利

JPH115103A ROLLING METHOD OF FERRITE SYSTEM STAINLESS STEEL PLATE 失效
公开(公告)号：JPH115103A
公开(公告)日：1999-01-12
申请号：JP15703497
申请日：1997-06-13
申请人： KAWASAKI STEEL CO
发明人： SEKI HARUHIKO , KONDO KOJI , HIRUTA TOSHIKI , IMAE TOSHIO , YARITA YUKIO
IPC分类号： B21B3/02 , B21B1/26
摘要： PROBLEM TO BE SOLVED: To provide the excellent surface quality steel plate constantly without rough surface by specifying the heating furnace exit side temperature, the rolling reduction of each pass in the rough rolling, the rolling reduction of each stand in the first half of the finish rolling, the rolling speed of the finish last stand. SOLUTION: The slab heated in the heating furnace 1 is roughly rolled by a rough rolling mill 3 with the stands R1 -R3 after the scale is exfoliated in the scale breaker 2. Then it is rolled for finish by the finish rolling mill 4 with the stands F1 -F7 and after passing through the run out table 5, it is rolled around the down coiler 6. In this process, by setting the heating furnace exit side temperature at 1200 deg.C-1300 deg.C, the rolling reduction of each pass in the rough rolling at 35% and under, the rolling reduction of each stand in the first half (F1 -F3 stands) of the finish rolling at 30% and under and the rolling speed of the finish last stand at 700 m/min and up, the optimum rolling condition is obtained and the excellent steel plate surface is obtained constantly.

65. 发明专利

JPH10314818A METHOD FOR ESTIMATING SHEET CROWN IN SHEET ROLLING AND METHOD FOR SETTING UP SHEET CROWN 失效
公开(公告)号：JPH10314818A
公开(公告)日：1998-12-02
申请号：JP12813797
申请日：1997-05-19
申请人： KAWASAKI STEEL CO
发明人： TAMAI YOSHIKIYO , WATANABE YUICHIRO , HIRUTA TOSHIKI , IMAE TOSHIO , TAKEBAYASHI KATSUHIRO
IPC分类号： B21B37/00 , B21B37/28
摘要： PROBLEM TO BE SOLVED: To improve the accuracy of prediction of sheet crown even in the vicinities of edges of a sheet. SOLUTION: In this method, the sheet crown Cri on the outlet side of a first stand is calculated based on the sum of the multiplied result of the calculated value of the roll crown CrR. and influence coefficient α at the time of loading at the first stand and the multiplied result of the calculated value or measured value of the sheet crown Cri-1 on the inlet side of the first stand and influence coefficient β. At this time, the influence coefficients α, β are expressed by the function of the ratio of width to thickness, have the distribution in the width direction which is rapidly increased in the vicinities of the edges of the sheet and the distance L from the edges of the sheet of the position where the increase is begun is calculated by the formula: Cri =α(r).CrRi +β(r).Cri-1 , which is expressed as the function of the thicknesses on the inlet and outlet sides.

66. 发明专利

JPH10263668A FINISH ROLLING LUBRICANT OF HOT ROLLING STEEL PLATE AND FINISH ROLLING METHOD 失效
公开(公告)号：JPH10263668A
公开(公告)日：1998-10-06
申请号：JP7315197
申请日：1997-03-26
申请人： KAWASAKI STEEL CO
发明人： IMAE TOSHIO , HIRUTA TOSHIKI
IPC分类号： B21B27/10 , B21B1/22 , B21B45/02
摘要： PROBLEM TO BE SOLVED: To effectively execute finish rolling of a hot steel strip, to make a hot steel plate in a thin thickness and to reduce the consumption unit of energy by composing a lubricating agent of a graphite powder, a water dispersion resin and a dispersing agent. SOLUTION: An uniform liquid film is formed by spreading a lubricating agent with a spray through a nozzle at the position sufficiently separated from the position where biting a steel 1 again by rotating the surface of a cooled roll 2. In this time, the surface temperature of the roll maybe in the range of 140 deg.C (100 to 150 deg.C). The lubricating agent is formed by adding a graphite powder (lubricating action), a water dispersion resin (sticking action) and their dispersion agent in water. The graphite powder as the lubricating agent is preferably 1 to 30 weight % and the water dispersion resin is preferably 1 to 20 weight %. The position of spraying the lubricating agent is made by 10 to 170 deg. of the center angle of the roll at the position of the upper stream side of the rotation direction from the position of biting the steel. Therefore, the reduction ratio 40% of the rolling load being unable to attain with a conventional technique against the non-lubricating can be easily realized.

67. 发明专利

JPH10216815A METHOD FOR PREDICTING SHEET CROWN 失效
公开(公告)号：JPH10216815A
公开(公告)日：1998-08-18
申请号：JP2466997
申请日：1997-02-07
申请人： KAWASAKI STEEL CO
发明人： WATANABE YUICHIRO , HIRUTA TOSHIKI , IMAE TOSHIO , SUZUKI MAKOTO
IPC分类号： B21B37/00 , B21B37/28 , B21B38/02
摘要： PROBLEM TO BE SOLVED: To improve the accuracy of a sheet-crown predicting model to attain the target of the sheet crown and to make a sheet shape better even in case there is a rolled stock having different width in a rolling cycle. SOLUTION: In a predicting method of the sheet crown of a metal plate which is rolled with a continuous rolling mill in which plural rolling stands are arranged in series, about two or more continued rolling stands F5-F7, the sheet crown is detected with sheet crown meters 12 at two places of the inlet side of the most upstream stand F5 and outlet side of the most downstream stand F7, also the profiles of the work rolls of each rolling stand are detected with roll profile meters 10 and, in determining the learning value of the model for predicting the sheet crown on the outlet side of each rolling stand, the ratio of the learning value is defined as the ratio of the difference between the detected value and the predicted value of the profiles of the work rolls of each rolling stand.

68. 发明专利

JPH10180338A SCALE FLAW PREVENTING METHOD IN HOT FINISHING ROLLING 失效
公开(公告)号：JPH10180338A
公开(公告)日：1998-07-07
申请号：JP34352296
申请日：1996-12-24
申请人： KAWASAKI STEEL CO
发明人： SEKI HARUHIKO , IMAE TOSHIO , ISOBE KUNIO , TOMINAGA KENJI
IPC分类号： B21B1/26 , B21B45/02 , B21B45/08
摘要： PROBLEM TO BE SOLVED: To strike a cooling water against the wide area of a steel plate and to surely restrain the generation of scales in the part by distributing the cooling water within a prescribed quantity range per unit area toward the whole steel plate within a prescribed percentage range of the steel plate surface area in one or more sections among respective stands of a hot tandem finishing mill train and cooling the steel plate surface. SOLUTION: The finishing mill outlet side temperature FDT is operated from the condition of the measured temperature value by a finishing mill inlet side thermometer 4, rolling speeds of respective stands and the plate thickness or the like and compared with the measured value of FDT thermometer 5, the number using strip coolants 3 is increased when the measured value is larger than a prescribed FDT reference value, and the number using the same is reduced when it is smaller than the reference value. Signals controlling whether coolants 3 are used or not are transmitted from a FDT calculating device 11 to a strip coolant controller 12, the cooling water of ejecting quantity of >=100cc/cm /min to /min per unit area is distributed toward the whole steel plate 1 within the range of >=50% to

69. 发明专利

JPH1058022A METHOD FOR CONTINUOUSLY HOT-ROLLING SLAB 失效
公开(公告)号：JPH1058022A
公开(公告)日：1998-03-03
申请号：JP22410996
申请日：1996-08-26
申请人： KAWASAKI STEEL CO
发明人： TAKEBAYASHI KATSUHIRO , TAMAI YOSHIKIYO , IMAE TOSHIO , NIKAIDO HIDEYUKI
IPC分类号： B21B15/00 , B21B1/26 , B21B37/00
摘要： PROBLEM TO BE SOLVED: To stably pass through a rolled base stock without breaking the stock by preventing brittle fracture in the joined part at the first stand of a finishing mill. SOLUTION: In this method, the tail end part of a preceding slab 1 after rough rolling is joined with the tip part of the succeeding slab 2 and finish rolling is continuously executed. In such a case, a crown ratio to be imparted to the joined part by the first reduction of the finish rolling is set to a prescribed value, also the increment from before the reduction is set in accordance with the sulfur content in steel and the crown is formed on the slab at least by the final pass of the rough rolling so that the crown ratio not more than the value subtracting the increment from the prescribed value is attained after rough rolling.

70. 发明专利

JPH08117826A METHOD FOR ESTIMATING PLATE CROWN AND SHAPE OF ROLLING STOCK 失效
公开(公告)号：JPH08117826A
公开(公告)日：1996-05-14
申请号：JP26754994
申请日：1994-10-31
申请人： KAWASAKI STEEL CO
发明人： WATANABE YUICHIRO , IMAE TOSHIO , ISOBE KUNIO , KITAHAMA MASANORI
IPC分类号： B21B37/00 , B21B37/18 , B21B37/28
摘要： PURPOSE: To estimate a plate crown with high precision, which satisfactiorily coincides with a result obtained by a strict calculation in a short time without damaging the universal applicability of a divided model online even under a severe condition where a rolling load is high and a roll diameter is small. CONSTITUTION: In a process calculating the deflexion quantity of the roll of a rolling mill, simplifying a calculation so that the accuracy of the strict calculation is not damaged to estimate and determine online the operation quantity of a device controlling the plate crown and the shape of a rolling stock, the deflexion quantity of each roll is obtained, considering a linear load distribution between the rolls of the rolling mill as a straight line distribution. At the same time, a higher-order linear load between the rolls, canceling out the unadaptable parts of the deflexion of the rolls coming into contact with each other, is obtained. Consequently, when correcting the unadaptability of the deflexion, a distribution in the roll shaft direction of a spring constant between the rolls, is considered.

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