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31. 发明专利

JPS63111407A PROFILE MEASURING INSTRUMENT 失效
公开(公告)号：JPS63111407A
公开(公告)日：1988-05-16
申请号：JP25746186
申请日：1986-10-29
申请人： NIPPON STEEL CORP , TOSHIBA CORP
发明人： MATSUMI TOSHIYUKI , KAWAMURA KUNIO , MURAKAMI JUNICHI , OBARA SATORU
IPC分类号： G01B15/02 , G01B15/04 , G01J5/10
摘要： PURPOSE:To obtain the cold-temperature profile of a body to be measured by correcting plate thickness data with temperature profile data by kinds of bodies to be measured from a temperature distribution generating means. CONSTITUTION:A radiation thermometer 10 measures the breadthwise temperature distribution of the body 4 to be measured and a temperature processing part 22 obtains temperature profile data on the body 4 to be measured. A profile arithmetic part 20 has a plate thickness conversion part 21, the temperature processing part 22, a display processing part 23, a radiation control part 24, and a system control part 25 which controls the whole of the profile arithmetic part 20, and receives a digitized electric signal corresponding to the intensity of radiation from a data collection part 5 and performs temperature compensation to finds the profile of the body 4 to be measured. The plate thickness data obtained by transmitting the radiation through the body 4 to be measured is corrected with temperature profile data to obtain the cold-temperature profile of the body 4 to be measured.

32. 发明专利

JPS6349318A HEATER FOR STRIP END PART BETWEEN ROLLING MILL 失效
公开(公告)号：JPS6349318A
公开(公告)日：1988-03-02
申请号：JP19121886
申请日：1986-08-15
申请人： NIPPON STEEL CORP , MITSUBISHI ELECTRIC CORP
发明人： KAWAMURA KUNIO , MATSUI KENICHI , WAKASUGI NOBUYUKI , GOTO AKIRA , OHASHI SEIICHI
IPC分类号： C21D1/42 , B21B45/00
摘要： PURPOSE:To heat both end parts of a strip with a little electric power and to improve the strip quality by installing a couple of laterally movable suspended frames from an overbridge type gantry on the pass line between hot finishing rolling mills and installing a couple of induction heaters being vertically movable on the inside face of the frames facing each other. CONSTITUTION:Carriers 2a movable in the width direction on an overbridge type gantry 1a on the pass line between hot finishing rolling mills. Intermediate movable frames 5a and 5b, which are vertically moved by cylinders 12a, 12b and a distance between the frames 5a, 5b is adjusted by a gap setting cylinder, are installed on the inside face of a couple of vertical frames 2b facing each other. The frames 2b are suspended from the carriers 2a. The frames 5a, 5b are provided with heating faces 6c, 6d vertically moved by copying cylinders 9a, 9b. The heating faces 6c, 6d to which a steel strip 22 exists hold a proper gap against the strip 22 by actions of the above cylinders 9a, 9b. End parts of the strip 22 are heated with a temp. rise of the heating faces 6c, 6d by induction heating inductors 15a, 15b. Therefore, the rolling quality of the rolled strip 22 whose both end parts are easily cooled is made to be uniform and good.

33. 发明专利

JPS6340606A HOT ROLLING METHOD 失效
公开(公告)号：JPS6340606A
公开(公告)日：1988-02-22
申请号：JP18493686
申请日：1986-08-06
申请人： NIPPON STEEL CORP , ISHIKAWAJIMA HARIMA HEAVY IND
发明人： IGARASHI YASUO , KAWAMURA KUNIO , TAZOE NOBUHIRO , HONJO HISASHI
IPC分类号： B21B37/28 , B21B37/00
摘要： PURPOSE:To enable edge dropless control or control to a prescribed amt. of edge drop by positioning the convergent parts of convergent grinding rolls to the ends of a rolled stock and rolling the stock and subjecting the stock to cross reduction under tension with a vertical rolling mill. CONSTITUTION:The sheet thicknesses on the outlet sides of respective stands are determined from the size and steel kind of the rolled stock and the load distribution of the respective stands. The rolling loads of the respective stands are determined from the temps. on the inlet sides of the respective stands, the predicted values of deformation resistance and the sheet thicknesses on the outlet sides of the respective stands, then the face pressures of the respective stands are determined. The amts. A of the edge drops on the outlet sides of the respective stands are determined from the face pressures and the shapes of the single-taper work rolls built into the mill. The amt. A of the edge drop on the outlet side of the final stand is determined in accordance therewith. The corrected amt. C of the edge drop is determined from the resultant amt. A of the edge drop and the target amt. B of the edge drop. The width reduction force of the vertical rolling mill to erase the corrected amt. C of the edge drop from the preliminarily determined cross reduction force and the improved amt. of the edge drop and the cross reduction is executed under the cross reduction force obtd. in the above-mentioned manner.

34. 发明专利

JPS6310017A STRIP EDGER 失效
公开(公告)号：JPS6310017A
公开(公告)日：1988-01-16
申请号：JP15446486
申请日：1986-07-01
申请人： ISHIKAWAJIMA HARIMA HEAVY IND , NIPPON STEEL CORP
发明人： TAZOE NOBUHIRO , HONJO HISASHI , SATO KUNICHI , KAWAMURA KUNIO , IGARASHI YASUO
IPC分类号： B21B1/26 , B21B13/06 , B21B37/00 , B21B37/22
摘要： PURPOSE:To eliminate a defective shape and to shorten the response time in a width rolling reduction by actuating an edger roll at high speed at the width rolling reduction starting time until it is located at the prescribed gap position for the strip end face and advancing it at low speed thereafter. CONSTITUTION:When the width end detecting devices 6, 7 moving together with edger rolls 4, 5 detect the width end of a strip 3 with the advance of the edger rolls 4, 5, change control devices 10, 11 change the motions of rolling reduction cylinders 1, 2 to the low pressure side when the gap between the outer peripheral front face of the edger rolls 4, 5 and end face of the strip 3 becomes L. The edger rolls 4, 5 are thus abutted to the strip 3 end face slowly and the width rolling reduction is thereafter performed by the constant pressure or constant position control. Consequently the responsibility is improved, the rolling reduction of the right and left rolls 4, 5 is always balanced and no defective shape is caused on the strip.

35. 发明专利

JPS6310010A STRIP EDGER 失效
公开(公告)号：JPS6310010A
公开(公告)日：1988-01-16
申请号：JP15446786
申请日：1986-07-01
申请人： ISHIKAWAJIMA HARIMA HEAVY IND , NIPPON STEEL CORP
发明人： TAZOE NOBUHIRO , FUJISHIMA IKUO , KAWAMURA KUNIO , IGARASHI YASUO
IPC分类号： B21B13/06
摘要： PURPOSE:To obtain a high accuracy width by finishing the front and rear ends having a relaxed strip tension by utilizing a biting rigidity at the final stand by installing a mill outlet side close edger positioned near to the outlet side of the final stand of a finish rolling mill. CONSTITUTION:An intermediate edger 7 installed in the downstream of a looper device 3 between rolling stands 1, 2 performs width screwing down of both width ends of a strip 5. A close edger 8 installed in a position near to the final stand 1 projects edger rolls 13 inside the guide face of side guides 10 for performing width screwing down. The width accuracy over the entire strip length is improved by a device with that composition.

36. 发明专利

JPS62267010A CROSS ROLLING METHOD AND CONTROL DEVICE THEREFOR 失效
公开(公告)号：JPS62267010A
公开(公告)日：1987-11-19
申请号：JP11148186
申请日：1986-05-15
申请人： ISHIKAWAJIMA HARIMA HEAVY IND , NIPPON STEEL CORP
发明人： TAZOE NOBUHIRO , HONJO HISASHI , SATO KUNICHI , KAWAMURA KUNIO , IGARASHI YASUO
IPC分类号： B21B37/22 , B21B13/06 , B21B37/00 , B21B37/28 , B21B37/50 , B21B41/10
摘要： PURPOSE:To prevent the buckling of a strip and to maintain always the specified rolling reduction by adjusting the right and left heights of a press roll in accordance with the difference between the right and left tensions generated in the strip. CONSTITUTION:A looper 4, the press roll 9 and vertical rolls 6a, 6b are disposed between rolling mill stands 1 and 1'. A difference between the right and left tensions is detected as a change of load by the load cells 12a, 12b of the looper 4 when said difference is assumed to be generated by the defective shape of the strip 5. The load signal thereof is fed to a calculator 13 from which the tension signal is outputted to a controller 14. The right and left heights of the press roll 9 are then adjusted by servocontrol valves 15a, 15b and cylinders 10a, 10b. The inclination of the strip 5 is, therefore, prevented and the buckling is prevented, by which always the specified rolling reduction is maintained.

37. 发明专利

JPS62214804A METHOD AND APPARATUS FOR HOT ROLLING 失效
公开(公告)号：JPS62214804A
公开(公告)日：1987-09-21
申请号：JP5665886
申请日：1986-03-14
申请人： NIPPON STEEL CORP
发明人： WAKAKO ATSUHIRO , ONO TAKESHI , KAWAMURA KUNIO , MATSUI KENICHI
IPC分类号： B21B1/26 , B21B3/00 , B21B37/74 , B21B45/00
摘要： PURPOSE:To produce a product having uniform material quality without mixed grain structure over the entire width of the overall length with the min. energy by converting the structure of steel products to austenite by intermediate heating and subjecting the steel product to rolling at the time of rolling after intermediate heating in a rolling line. CONSTITUTION:The part, where the temp. falls to the Ar3 transformation point or below, of the steel product bar 1 which is subjected to rough hot rolling and descaling with high- pressure water in a device 31 is subjected to intermediate heating with edge heaters 4 between F1-F2 of finishing mills F1-F7 and further to finish rolling. A control device 9 is inputted with the actual temps. T1, T2, T7 of thermometers 5-7, a rolling speed VR and the information on a sheet thickness (t), the Ac3 temp. determined from material components and the target temp. T taking the subsequent temp. drop into consideration from a computer 10. The device 9 determines the quantity of the heating output of the heaters 4 so that the temp. of the bar 1 is controlled within the range of the intermediate target temp. above the Ac3 temp. The finish rolling is completed within the range of the target temp. on the final finishing outlet side above the Ar3 temp. The heating degree of the intermediate heating is changed based on the former of the difference between the temps. T2 and DELTAT and the difference between the temp. T7 and the target temp. on the final finishing outlet side.

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