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1. 发明专利

JPS5930414A Control method of wall thickness of shell in seamless pipe mandrel mill 失效
标题翻译：无缝管人造板的壁厚度控制方法
公开(公告)号：JPS5930414A
公开(公告)日：1984-02-18
申请号：JP13790382
申请日：1982-08-10
申请人： Nippon Kokan Kk
发明人： KAWABATA SHIGEO , AKITA SHINJI , FUSHIMI NAOYA , TANAKA MEGUMI , HATANAKA MASAYUKI , SAITOU MORIO
IPC分类号： B21B17/04 , B21B37/18 , B21B37/78
CPC分类号： B21B37/78 , B21B17/04
摘要： PURPOSE:To roll a seamless steel pipe so that its wall thickness is constant in the longitudinal direction, by controlling the caliber height of rolling rolls so that the rolling loads at least at the final two stands of a mandrel mill maintain the prescribed values. CONSTITUTION:While a shell 2 is being rolled by a mandrel mill consisting of plural stands, and at least at the final two stands of the plural stands; the shell 2 is passed, together with a mandrel bar 3 arranged in the inside of the shell 2, through a gap between rolling rolls 1a, 1b having calibers respectively; the rolling loads are detected by load cells, etc. to output the detected results to an arithmetic device 7. The device 7 calculates the height K of the caliber between a pair of the rolls 1a, 1b basing on the detected values so that a rolling load attains a prescribed value, to output a control signal to a caliber-height controller 5 basing on the calculated values, thereby controlling a caliber height controller 4.
摘要翻译：目的：通过控制轧辊的机芯高度，使至少在芯棒式无缝管轧机的最后两台的轧制载荷保持规定值，轧制无缝钢管，使其壁厚在长度方向上恒定。构成：当壳体2由多个支架组成的芯棒式轧机轧制时，至少在多个支架的最后两个支架上; 壳体2与布置在壳体2的内部的芯棒3分别通过具有口径的轧辊1a，1b之间的间隙通过; 通过称重传感器等检测轧制载荷，将检测结果输出到运算装置7.装置7基于检测值计算一对辊1a，1b之间的口径的高度K，从而轧制负载达到规定值，根据计算值将控制信号输出到口径高度控制器5，从而控制口径高度控制器4。

2. 发明专利

JPS5927704A Method for controlling wall thickness of shell in mandrel mill for seamless pipe 失效
标题翻译：用于无缝管的MANDREL MILL中的壳体壁厚度控制方法
公开(公告)号：JPS5927704A
公开(公告)日：1984-02-14
申请号：JP13790282
申请日：1982-08-10
申请人： Nippon Kokan Kk
发明人： KAWABATA SHIGEO , AKITA SHINJI , FUSHIMI NAOYA , TANAKA MEGUMI , HATANAKA MASAYUKI , SAITOU MORIO
IPC分类号： B21B17/02 , B21B37/18
CPC分类号： B21B17/02
摘要： PURPOSE:To roll a seamless pipe so as to have the specified thickness in the longitudinal direction thereof by determining the outside diameter distribution of a mandrel bar from the temp. distribution thereof in the longitudinal direction measured right after the end of rolling the seamless steel pipe and controlling the caliber heights of rolling rolls of the stands with the measured values. CONSTITUTION:The outside diameter of a mandrel bar 3 measured in the longitudinal direction thereof right after the passage of the trailing end thereof through a final stand 1 (#n) upon ending of rolling of a seamless steel pipe (shell) 2 is inputted to a calculator 6. The calculator 6 calculates the spaces between the caliber surfaces of a pair of rolling rolls 1a, 1b and the surface of the 2nd and succeeding bars 3 in each stand in accordance with said measured value. More specifically, said calculator calculates the caliber height between the rolls 1a and 1b in the respective positions in the longitudinal direction of the 2nd and succeeding bars 3 for each of the stands so that the caliber height is kept constant in the longitudinal direction of the 2nd and succeeding bars 3. The calculator 6 controls a controller 6 in accordance with the calculated values, and the controller 6 adjusts an adjuster 4 in accordance with the signal from the calculator 6.
摘要翻译：目的：通过确定芯棒的温度的外径分布，滚动无缝管，使其长度方向具有规定的厚度。在轧制无缝钢管结束后测量的纵向方向的分布，并用测量值控制机架的轧辊的口径高度。构成：在无缝钢管（外壳）2的轧制结束时，在其后端通过最终支架1（#n）之后，在其长度方向上测量的芯棒3的外径被输入到计算器6根据所述测量值计算一对轧辊1a，1b的口径表面与每个支架中的第二和随后的杆3的表面之间的空间。更具体地说，所述计算器针对每个支架在第二和随后的条3的纵向各自的位置中计算辊1a和1b之间的口径高度，使得口径高度在第二计算器6根据计算值控制控制器6，并且控制器6根据来自计算器6的信号调整调节器4。

3. 发明专利

JPS57206505A CROSS ROLLING METHOD IN ROLLING OF THICK PLATE 失效
公开(公告)号：JPS57206505A
公开(公告)日：1982-12-17
申请号：JP8931181
申请日：1981-06-10
申请人： NIPPON KOKAN KK
发明人： TAKUMI MASAO , NABA YASUYUKI , KOMATA KAZUO , SAITOU MORIO , TANIMOTO SUNAO , TSUKAMOTO HIDEO
IPC分类号： B21B1/38
摘要： PURPOSE:To improve cross rolling accuracy in rolling of thick plates by determining the volume of a slab after drawing out from a heating furnace, calculating the target thickness at the end of the cross rolling and subjecting the slab to cross rolling. CONSTITUTION:With the actual weight of a slab S prior to loading into a heating furance defined as W, the density taking the steel compsn. of the slab S into consideration as rho, and the coefft. of scale loss of the heating furnace as alpha, the volume V of the slag after drawing out from the heating furnace is determined by the equation v=w/rhoxalpha. The target thickness T at the end of the cross rolling is calculated by the equation T=V/(AXB) from said volume V of the slab, the width A of the slab allowing for the rate of deformation measured with a side guide or a width gage or the like prior to starting of rolling and the target plate width B taking the rate of defomation during the cross rolling into consideration. The rolling reduction of rolling mills is set at this target thickness T, and the slab Sl is subjected to the cross rolling.

4. 发明专利

JPS60249009A MEASURING INSTRUMENT FOR LENGTH OF TAPERED SURFACE FORMED ON INSIDE SURFACE OF PIPE END 失效
公开(公告)号：JPS60249009A
公开(公告)日：1985-12-09
申请号：JP10359184
申请日：1984-05-24
申请人： NIPPON KOKAN KK
发明人： SAITOU MORIO , KOMINE ISAMU , MAENO HIROYUKI , YOSHIDA MASATO , MURAMATSU ISAO
IPC分类号： B21C51/00 , G01B5/207 , G01B21/02
摘要： PURPOSE:To measure quickly and exactly the length of the tapered surface formed on the inside surface of a pipe end by providing a pair of profiling sensors on the inside and outside surface sides of a pipe to be measured and detecting the displacement electric signals corresponding to the ruggedness of the inside and outside surfaces by means of a pair of displacement detectors. CONSTITUTION:A pair of the profiling sensors 7 are provided on the inside and outside surface sides of the pipe 14 to be measured and the displacement electric signals corresponding to the ruggedness on the inside and outside surfaces are respectively detected by a pair of the displacement detectors 8. The simultaneous measurement of the length of the tapered surface at the pipe end as well as the wall thickness thereof is made possible if the instrument is so arranged that the image of the tapered surface part is obtd. in accordance with said signals. More specifically, the length of the tapered surface formed on the inside surface of the pipe end is quickly and exactly measured according to this invention.

5. 发明专利

JPS60243206A METHOD FOR OPERATING BLAST FURNACE 失效
公开(公告)号：JPS60243206A
公开(公告)日：1985-12-03
申请号：JP9961784
申请日：1984-05-17
申请人： NIPPON KOKAN KK
发明人： SHIBUYA TEIJI , YAMAOKA YOUJIROU , IZUMI MASAROU , SAITOU MORIO , KIMURA RIYOUSUKE , KITAGAWA MITSUHIRO
IPC分类号： C21B5/00 , C21B7/24
摘要： PURPOSE:To stabilize conditions in a blast furnace by comparing a model change of the difference in pressure between plural pressure measuring holes arranged in the furnace in the falling direction of starting materials to a change of the difference in pressure during actual operation to fine out disorder between ore and coke layers and by carrying out control on the basis of the disorder. CONSTITUTION:Plural pressure measuring holes 1a, 2a are arranged in a blast furnace in the falling direction of starting materials at a prescribed distance (DELTAl) from each other. A change of the difference in pressure between the holes 1a, 2a is measured in case of model operation in which the border between ore and coke layers is clearly defined. The model change is compared to a change of the difference in pressure during actual operation to examine the degree of disorder between ore and coke layers during actual operation. Blast, coke, etc. are controlled with a controller 6 on the basis of the examined value.

6. 发明专利

JPS58199615A Removing method of load due to roll eccentricity in rolling mill 失效
标题翻译：滚动铣刀滚子偏心的卸载方法
公开(公告)号：JPS58199615A
公开(公告)日：1983-11-21
申请号：JP8290582
申请日：1982-05-17
申请人： Nippon Kokan Kk
发明人： TANIMOTO SUNAO , HAYASHI YOSHITAKA , SAITOU MORIO , YABUUCHI TOSHIFUMI
IPC分类号： B21B37/18 , B21B37/66 , B21B37/12
CPC分类号： B21B37/66
摘要： PURPOSE:To remove a load due to roll eccentricity from a rolling load by a simple controlling device, by extracting a component corresponding to the roll eccentricity from a differential signal obtained by differentiating a rolling load signal through a resonance circuit accepting the number of revolutions of a roll as a coexisting frequency. CONSTITUTION:A rolling load P(t) is inputted to a differentiation circuit of a block 1. An output (u) is expressed by the equation I (a dot.shows a time differential). The output U is inputted to a resonance circuit of a block 2. The output X of the block 2 is expressed by the equation II(omega0 is the number of revolution of a roll (angular velocity), zeta is a damping constant). A block 3 is a gain circuit, and an output (y), expressed by the equation III, is the whole output and corresponds to a component of eccentricity. Thus an excellent ratio, signal/ noise, is obtained by extracting the component of eccentricity.
摘要翻译：目的：通过简单的控制装置从滚动负载中移除由于滚动偏心引起的负载，通过从通过将轧制负载信号通过接受转数的谐振电路区分轧制负载信号而获得的差动信号，提取与辊偏心率相对应的部件卷作为共存频率。构成：将滚动载荷P（t）输入到块1的微分电路。输出（u）由等式I（a dot.shows a time differential）表示。输出U被输入到块2的谐振电路。块2的输出X由等式II表示（omega0是辊的旋转数（角速度），zeta是阻尼常数）。块3是增益电路，并且由等式III表示的输出（y）是整个输出，并且对应于偏心率的分量。因此，通过提取偏心分量获得优异的比率信号/噪声。

7. 发明专利

JPS58163465A STENCIL MARKER 失效
公开(公告)号：JPS58163465A
公开(公告)日：1983-09-28
申请号：JP4372782
申请日：1982-03-20
申请人： NIPPON KOKAN KK , SHIYOUTOKU SEISAKUSHO KK
发明人： TSUKAMOTO HIDEO , SAITOU MORIO , HOSOE TOSHIAKI , TAKAHASHI RIYOUICHI , ITOU TADAYOSHI , FUJITA IWAO , IGARASHI TAKAO
IPC分类号： B05B15/04
摘要： PURPOSE:To automatically wash a stencil for enabling to reuse it, by providing air and water nozzles, a washing rush and a washing pan at the stencil marker. CONSTITUTION:Nozzles 4 for spraying air and water to the surface of a stencil 1 in the stencil marker, a brush 6a for washing the back surface of the stencil 1 and a washing pan 6 are provided. After paint is sprayed, the washing pan 6 is rotated and moved downwards to wash the stencil 1 while retreating the air and water nozzles 4. In succession, high-pressure air is sprayed, while the nozzles 4 are concurrently forwarded. Thereafter, the back surface of the stencil 1 is washed by the brush 6a. Accordingly, the work to detach the stencil is omitted, and it is not necessary to make a plurality of the same stencils.

8. 发明专利

JPS5844341A ULTRASONIC FLAW DETECTION 失效
公开(公告)号：JPS5844341A
公开(公告)日：1983-03-15
申请号：JP14265881
申请日：1981-09-10
申请人： NIPPON KOKAN KK
发明人： SAITOU MORIO , NAKANO TETSUO
IPC分类号： G01N29/04 , G01N29/40
摘要： PURPOSE:To improve the inspection efficiency while preventing diffusion of ultrasonic beam by having an ultrasonic beam incident over a tubular product in such a manner as to converge on the axis thereto while to be roughly equal in the echo levels from the outer surface and inner surface thereof. CONSTITUTION:A probe 12 for transmitting or receiving ultrasonic waves is set at the position in the extension X at the right angle to the axis O of a tubular product 11 such as steel pipes facing the circumference thereof in such a manner as to be so inclined that the incidence angle of the ultrasonic beam gives (i). An ultrasonic beam is generated from the probe 12 so as to converge on the axis O of the tubular product 11. The beam propagating at a refraction angle theta in the axial direction of the product is made roughly equal in the echo levels by a sensitivity compensation as reflected on the outer surface and the inner surface of the tubular product 11.

9. 发明专利

JPS5822907A DIMENSION MEASURING METHOD OF TUBULAR SUBSTANCE 失效
公开(公告)号：JPS5822907A
公开(公告)日：1983-02-10
申请号：JP12217681
申请日：1981-08-04
申请人： NIPPON KOKAN KK
发明人： SAITOU MORIO , NAKANO TETSUO
IPC分类号： G01B17/00 , G01B17/02
摘要： PURPOSE:To measure dimensions of an inside diameter with high accuracy, by transmitting and receiving an ultrasonic pulse in 2 point positions of the outside, which are opposed to each other through the axial core of a tubular substance, and measuring the inside diameter dimensions of the tubular substance. CONSTITUTION:Ultrasonic pulse transmitting and receiving probes 2, 3 are provided on separate positions of the outside, which are opposed to each other through the axial core of a steel pipe 1 being a tubular substance. Both the probes 2, 3 are placed in water 4 in order to improve acoustic coupling with the steel pipe 1, and send out an ultrasonic pulse vertically against the steel pipe 1 in the direction as indicated with an arrow. The ultrasonic pulse, at first, is reflected by the outside circumferential surface of the steel pipe 1, and this reflected wave is received by both the probes 2, 3. Subsequently, a reflected pulse from the inside circumferential surface of the steel pipe 1 is received, and a value of the inside diameter of the steel pipe 1 can be known easily by comparing a diagram whose quadrature axis and axis of ordinates show a time of a well-known steel pipe such as an outside diameter D0, an inside diameter d0, thickness t0, t0', etc. and pulse intensity, respectively, with a measured value of a steel pipe to be measured.

10. 发明专利

JPS5815154A ULTRASONIC FLAW DETECTING METHOD 失效
公开(公告)号：JPS5815154A
公开(公告)日：1983-01-28
申请号：JP11327381
申请日：1981-07-20
申请人： NIPPON KOKAN KK
发明人： SAITOU MORIO , NAKANO TETSUO
IPC分类号： G01N29/04 , G01N29/28
摘要： PURPOSE:To quickly execute a flaw detecting inspection without requiring a water storing time, and also to reduce a nonflaw detection area, by preparing a local acoustic coupling water reservoir on a probe holding part, and obstructing a scatter of flow detecting water by a physical means. CONSTITUTION:Flaw detecting water 16 is led into a probe 13 through a water feed hole 15. In this case, a local water reservoir part 19 is formed by selecting the pressure and flow rate of the flow detecting water 16, and balancing it by centrifugal force working on the flaw detecting water 16 by a rotation of a probe holding part 12. A surplus portion overflowing from the water resevoir part 19 is discharged to the outside of the probe holding part 12 by utilizing circumferential direction waste channesl 17, 18 and axial direction waste channels 20, 21, so that the flaw detecting water does not scatter into the inside. In such a state, even if a material to be flaw-detected 11 is inserted into the probe holding part 12, no flaw detecting watter goes into the inside of the material 11 to be flaw-detected, and an ultrasonic wave is transmitted from a transmitter 14a by utilizing the flaw detecting water 16 of the water preservoir part 19, and is received by a receiver 14.

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