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1. 发明专利

JPS6058284B2 失效
公开(公告)号：JPS6058284B2
公开(公告)日：1985-12-19
申请号：JP1148982
申请日：1982-01-29
申请人： NIPPON KOKAN KK
发明人： KAWABATA SHIGEO , KOMINE ISAMU , AKITA SHINJI , YOSHIDA MASATO
IPC分类号： C21D1/00 , C21D9/00 , F27B9/40 , F27D21/00

2. 发明专利

JPS60187415A METHOD FOR DETECTING PLUGLESS ROLLING CONDITION IN PIERCER 失效
公开(公告)号：JPS60187415A
公开(公告)日：1985-09-24
申请号：JP4293984
申请日：1984-03-08
申请人： NIPPON KOKAN KK
发明人： KOMINE ISAMU , YOSHIDA MASATO , HATANAKA MASAYUKI , KAWABATA SHIGEO
IPC分类号： B21B19/04 , B21B37/00 , B21B37/78
摘要： PURPOSE:To detect a plugless rolling condition in a piercer by fetching the image of the shell of a pipe stock delivered from a piercer into a sensor and computing a measuring value corresponding to the outer diameter of pipe stock for comparing the computed value with a set value. CONSTITUTION:The image of the shell 3b of a pipe stock 3 delivered from the piercing rolls 2, 2 of a piercer 1 is fetched into an image sensor 7a through the lens 7b of a linear ray camera 7. The image is converted into an electric signal, which is outputted, as a timing signal, in sequence at every fixed time. A controller 8 compares the number (n1) of voltage-pulse (measured value) outputted from the sensor 7a with the number (n0) of previously set pulses (set value), to output an alarm signal to an alarm 9 when n1

3. 发明专利

JPS60141324A ELIMINATION OF BLACK STRIPE OF PIPE 失效
公开(公告)号：JPS60141324A
公开(公告)日：1985-07-26
申请号：JP24583383
申请日：1983-12-29
申请人： NIPPON KOKAN KK
发明人： KAWABATA SHIGEO , KOMINE ISAMU , AKITA SHINJI , YOSHIDA MASATO
IPC分类号： B21B23/00 , B21B17/04 , B21B37/78 , B21B45/02 , C21D9/08
摘要： PURPOSE:To eliminate black stripes by line-scanning the temperatures in the circumferential direction of a pipe, just after rolling it by a mandrel, and spraying cooling water on a part of the pipe excluding a temperature-lowered part in the pipe outer circumference by a prescribed cooling means, before feeding the pipe to a sizer. CONSTITUTION:Just after rolling a pipe 2 by a mandrel mill 3, the temperature distribution in the circumferential direction of pipe 2 is detected by a line-scanner type measuring means 6. Signals for opening and closing plural nozzles of a cooling means 5 are inputted to a controller 8, according to the results of judging the detection of black stripe by a processing device 7. In this way, cooling water is sprayed on a part excluding a temperature-lowered part of pipe 2, to make the temperature distribution in the circumferential direction of pipe 2 unifirm, by controlling the means 5 by the controller 8, before feeding the pipe 2 to a sizer 4. Thus, the black stripe of pipe is eliminated.

4. 发明专利

JPS6012130B2 失效
公开(公告)号：JPS6012130B2
公开(公告)日：1985-03-30
申请号：JP18276680
申请日：1980-12-25
申请人： NIPPON KOKAN KK
发明人： KAWABATA SHIGEO , AKITA SHINJI
IPC分类号： B21B19/10 , B21B17/14 , B21C37/16

5. 发明专利

JPS58172507A DETECTING DEVICE FOR EXTRAORDINARY FORM OF OUTER SURFACE OF PIPE 失效
公开(公告)号：JPS58172507A
公开(公告)日：1983-10-11
申请号：JP5552182
申请日：1982-04-05
申请人： NIPPON KOKAN KK
发明人： KAWABATA SHIGEO , KOMINE ISAMU , SAITOU MORIO , NAKANO TETSUO
IPC分类号： B21B37/78 , B21C51/00 , G01B11/02 , G01B11/24 , G01B11/30
摘要： PURPOSE:To enable the detection of an extraordinary form of the outer surface of a pipe even when it has a different outside diameter from others in a non- contact manner even with any vertical motion thereof without giving any damage to an installation, by detecting the extraordinary form of the outer surface of the pipe moving in the axial direction, based on a signal of an optical detector having a plurality of sensors parallel to the direction perpendicular to the axis of the pipe moving in the axial direction. CONSTITUTION:A light source 5 is combined with a lamp-condensing lens and has an angle of application enabling, at least, the irradiation of the sensors of an optical detector 6. The optical detector 6 is constituted in combination with a plurality of sensors arranged in parallel to the direction perpendicular to the axis of a steel pipe 1 moving in the axial direction thereof. Since a light from the light source 5 is received by the plural sensors of the optical detector 6, positions on the outer surface of the steel pipe 1 which are located in the directions perpendicular to the axis of the pipe moving in the axial direction thereof can be detected on the basis of light-reception signals of the plural sensors. When the steel pipe 1 having a fish tail 1b moves and the projection of the fish tail 1b passes through the sensor part of the optical detector 6, a light-reception signal is obtained in the optical detector 6. The position of a plot changes corresponding to the fish tail 1b, and an extraordinary form can be detected by detecting the position protruding from a normal position.

6. 发明专利

JPS5847544A METHOD AND DEVICE FOR SYNCHRONOUS TYPE CONTINUOUS CASTING 失效
公开(公告)号：JPS5847544A
公开(公告)日：1983-03-19
申请号：JP14684981
申请日：1981-09-17
申请人： NIPPON KOKAN KK
发明人： KUSAKABE TAKASHI , KOMATSU MASAMI , SUGAWARA TAKESHI , OKAMOTO TERUZOU , KAWABATA SHIGEO
IPC分类号： B22D11/04 , B22D11/053 , B22D11/06 , B22D11/07
摘要： PURPOSE:To improve the surface characteristics of an ingot and to obtain dense solidified structure by connecting one end of a central shaft provided with an ultrasonic oscillation converging body to be supplied with electric power via a slip ring to a rotating drum-like synchronous mold of synchronous type continuous casting device. CONSTITUTION:A casting drum 1 which is a synchronous mold has a diameter and width of prescribed sizes. An ultrasonic oscillation converging body 14 is mounted with a central shaft 16 and a disc 17 intersecting orthogonally therewith, and ultrasonic oscillators 18 are radially screwed 19 to the respective end faces on the outside circumference of the regular polygon thereof. One end of the shaft 16 is screwed to the drum 1. A slip ring 22 having channels 25 for supplying electric power to the oscillators 18 is mounted to the other end of the shaft 16. High frequency electric power is supplied from a generator 27 thereof through these channels to the oscillators 18, the oscillation waves whereof are turned by 90 deg. and converged to the large horizontal oscillations of the shaft 16. Said oscillations are transmitted to the drum 1 whereby the radial oscillations are generated. Thus the lubrication between the drum and the solidified shell is improved, the oscillations are transmitted to the inside of the shell and the purpose is achieved.

7. 发明专利

JPS57188621A TEMPERATURE CONTROLLING METHOD OF CONTINUOUS HEAT TREATMENT FURNACE 失效
公开(公告)号：JPS57188621A
公开(公告)日：1982-11-19
申请号：JP7445781
申请日：1981-05-18
申请人： NIPPON KOKAN KK
发明人： SANO SHIGERU , SAKURAI KATSUMI , ATAGO KAZUO , NOGUCHI HARUHIRO , KAWABATA SHIGEO
IPC分类号： C21D9/08 , C21D11/00 , G05B19/02
摘要： PURPOSE:To stabilize quality and to improve heat treatment efficiency by calculating a cumulative tempering parameter of a material to be treated at a furnace charging terminal, converting the parameter to temperature, and heating an upset part by a preheater. CONSTITUTION:An artihmetic device 60 controls controllers 40 and 50 to heat a material to be treated in a heat treatment furnace 20. The desired cumulative tempering parameter, furnace staying time and heating temperature of the material on the extraction side of the furnace 20 are estimated. The cumulative tempering parameter of an upset part a certain time before on the extraction side of the furnace 20 is found from the furnace staying time and heating temprature by reversed operation, and on the basis of said cumulative tempering parameter, the temperature prior to a prescribed time is found by reversed operation. Thus, the cumulative tempering parameter of the upset part at the charging terminal of the furnace 20 is found finally. While natural cooling between a preheater 10 and the furnace 20 is considered, the temperature of the upset part on the exit side of the preheater 10 is found, and the preheater 10 performs heating in such a way that the temperature after tempering is equal to the found temperature.

8. 发明专利

JPS57121810A Centering method for multistage rolling mill for steel pipe 失效
标题翻译：钢管多辊轧机中心方法
公开(公告)号：JPS57121810A
公开(公告)日：1982-07-29
申请号：JP628081
申请日：1981-01-21
申请人： Nippon Kokan Kk
发明人： KAWABATA SHIGEO
IPC分类号： B21B17/02 , B21B17/00 , B21B17/04 , B21B17/14 , G01B11/00
CPC分类号： B21B17/00 , B21B17/04 , B21B2273/22
摘要： PURPOSE:To align the centers of all the rolls on the same line in a short time with good accuracy and to improve the accuracy of rolling in multistage rolling mills for seamless steel pipes, etc., by correcting the centers of the respective rolling rolls with the center of a laser beam as a reference line. CONSTITUTION:A laser irradiating part 41 is mounted to the guide 4 on the inlet side of the 1st stand S1 of multistage rolling mills for steel pipes, and a detector 51 for a laser beam is mounted to the guide 5 on the exit side of the final stand S8. A beam is emitted from the part 41, and the center of the detector 51 is aligned to the center 0-0 of the beam and this is used as a reference line for the centers of rolling rolls. Next, housings 1-1g are installed to stands S1-S8 and the deviations of the centers of the jigs mounted to the respective housings from the beam center are detected with the detector 51. In accordance with the results of this detection, the centers of the respective rolling rolls are corrected, thence the jigs are removed, the housings are again installed to the stands and the centers of the rolling rolls of the stands S1-S8 are aligned to the reference line 0-0.
摘要翻译：目的：要在短时间内将所有轧辊的中心精确地对准在同一条生产线上，并通过对各轧辊的中心进行校正，提高无缝钢管等多台轧机的轧制精度。激光束的中心作为参考线。构成：激光照射部41安装在用于钢管的多级轧机的第一台S1的入口侧的引导件4上，并且用于激光束的检测器51安装在导向件5的出口侧终极S8。从部件41发射光束，并且检测器51的中心与光束的中心0-0对准，并将其用作轧辊中心的参考线。接下来，将外壳1-1g安装到台架S1-S8，并且用检测器51检测安装到各个壳体上的夹具的中心的偏离。根据该检测的结果，对各轧辊进行校正，然后移除夹具，将壳体再次安装在支架上，并且支架S1-S8的轧辊的中心与基准线0-0对准。

9. 发明专利

JPS57106414A CONTINUOUS MANUFACTURING OF SEAMLESS STEEL PIPE HAVING DIFFERENT WALL THICKNESS 失效
公开(公告)号：JPS57106414A
公开(公告)日：1982-07-02
申请号：JP18276580
申请日：1980-12-25
申请人： NIPPON KOKAN KK
发明人： KAWABATA SHIGEO , AKITA SHINJI
IPC分类号： B21B19/10
摘要： PURPOSE:To continuously manufacture plural steel pipes having same diam. and different wall thickness from one blank pipe, by changing setting of reduction for a hollow blank pipe on the way to obtain a shell having different wall thickness, and rolling said shell into a pipe having prescribed outer diam. under a constant draft by a sizer. CONSTITUTION:On the way of rolling of a hollow blank pipe with nearly the uniform outer diam. and wall thickness to be bitten by a steel pipe rolling mill, the setting of rotating speed of a roll and the roll gap of the rolling mill are changed to obtain a shell having a constant internal diam., and a outer diam. being changed on the way of rolling. This shell is rolled into a pipe having a prescribed outer diam. by a sizer under a constant draft to manufacture a steel pipe with same diam. but different in the wall thickness on the way of rolling. In this case, when the tension between the stands is not subjected under reduction of the sizer, the wall thickness equivalent to the half percentage of that of draft for outer diam. is increased, so that the wall thickness of shell is determined under consideration of the increase of said wall thickness for the dimension of wall thickness of the product.

10. 发明专利

JPS55158817A CENTERING METHOD FOR COIL 失效
公开(公告)号：JPS55158817A
公开(公告)日：1980-12-10
申请号：JP6606979
申请日：1979-05-30
申请人： NIPPON KOKAN KK
发明人： TOOMATA EISUKE , KAWABATA SHIGEO , SUZUKI KATSUYA , YAMANAKA ZENKICHI
IPC分类号： B21B37/68 , B21B37/00
摘要： PURPOSE:To improve the accuracy of the centering control, at aligning the position of the coiled strip to the center of the rolling mill, by changing the control constant correspondingly to the change of the line speed of the strip, and by reducing the displacement of the payoff reel correspondingly to the reduction in the coil load. CONSTITUTION:The coiled strip is uncoiled from the payoff reel 1, and the strip is driven to run on the tension roll 2 and is transported to the rolling mill 4. The edge of the strip is detected by the edge detector 3, and the hydraulic cylinder 8 is actuated to displace the payoff reel in the axial direction. Hereupon, the speedmeter 12 always detects the line speed of the strip, and the parameter change-over circuit 14 is switched through the indicator 13; hereby, the control constant of the PI controller 10 is changed. Besides, the position of the payoff reel is sent as feedback to the amplifier 6 through the position signal generator 11, and the hydraulic pressure of the cylinder is adjustably reduced with the reduction of the coil load.

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