专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH11326296A METHOD FOR CALIBRATING ULTRASONIC PROBE AND ULTRASONIC FLAW DETECTION APPARATUS 失效
公开(公告)号：JPH11326296A
公开(公告)日：1999-11-26
申请号：JP13478298
申请日：1998-05-18
申请人： NIPPON KOKAN KK , MITSUBISHI ELECTRIC CORP
发明人： MURAYAMA AKIRA , NITTA KAZUHIRO , NAKAJIMA MASARU , IIZUKA YUKIMICHI , ONO NARIYUKI , MITANI YUKIO , TANAKA HIROTSUGU , TASHIRO HIDEO
IPC分类号： G01N29/30 , G01N29/22
摘要： PROBLEM TO BE SOLVED: To calibrate and verify a probe offline under the same condition as an actual line with the use of a calibration test piece obtained by processing a flat bottom hole and an artificial flaw shaped like a flat bottom slit. SOLUTION: According to this calibration method, calibration test pieces 4, 5 each obtained by processing a flat bottom hole 8 and an artificial flaw of a flat bottom slit 7 at a rear face are attached outside a transfer line for a steel plate 1. Probe heads 2, 3 mounted to an inside truck, an edge truck of an ultrasonic flaw detection machine are scanned in a direction orthogonal to the flat bottom slit 7 at the same speed as at an online flaw detection, thereby detecting flaws of the calibration test pieces. Whether the probe is normal or abnormal is displayed and inspected for each probe.

2. 发明专利

JPH11183454A INSPECTION SYSTEM 失效
公开(公告)号：JPH11183454A
公开(公告)日：1999-07-09
申请号：JP35660697
申请日：1997-12-25
申请人： MITSUBISHI ELECTRIC CORP , NIPPON KOKAN KK
发明人： CHIBA KATSURO , TATENO SHIGEAKI , NAKAJIMA MASARU , NITTA KAZUHIRO , MURAYAMA AKIRA , IIZUKA YUKIMICHI , ONO NARIYUKI
IPC分类号： G01N29/04 , G01N29/26
摘要： PROBLEM TO BE SOLVED: To ensure efficient inspection even if the forward and rear ends of a planar test object are deformed obliquely by providing first and second scanning mechanisms for scanning an ultrasonic probe in a specified direction. SOLUTION: An ultrasonic flaw detection system for a planar test object 1 being carried straight comprises a first scanning mechanism 12 having Y scanning axis disposed on a truck 4 on the side closest to the carry-out side while holding a probe head B1, and a second scanning mechanism 13 having Y scanning axis disposed on the truck 4 on the side closest to the carry-in side while holding a probe heads B7, B8. At first, the heads B8, B9 touches the object 1 to inspect the longitudinal end part. Carriage is interrupted when the forward end of the test body 1 reaches the head B1 and the heads B1 through B7 touch the object 1 before the truck 4 performs X scanning. When the forward and rear end of the object 1 are deformed obliquely, the scanning mechanisms 12, 13 perform Y scanning. The number of mechanisms for touching/ separating the object 1 can be decreased by coupling adjacent heads through a ginbal mechanism, or the like.

3. 发明专利

JPH06170426A MANUFACTURE OF HIGH-TENSILE STEEL SHEET 失效
公开(公告)号：JPH06170426A
公开(公告)日：1994-06-21
申请号：JP32084592
申请日：1992-11-30
申请人： NIPPON KOKAN KK
发明人： TANAKA HAJIME , ONO NARIYUKI , KATAOKA HISAAKI
IPC分类号： B21B37/48 , B21B37/00 , B21B37/16 , B21B37/04
摘要： PURPOSE:To enable skin pass rolling with a cold rolling mill by obtaining the elongation per unit length of a steel sheet while executing constant load control and tension control between stands and correcting the reference value for tension control between stands in accordance with deviation when deviation between the elongation per unit length and the reference value is larger than a specified value. CONSTITUTION:Each rolling stand of the cold tandem mill is composed of a pair of work rolls 1 and back-up rolls 2. The actual value from tensiometers 12 and the reference value are compared and, when the deviation is larger than the specified value, the tension control of the steel sheet 16 is executed by controlling the rotational speed of motors 11 for main machine with devices 13 for controlling tension between stands. In this way, at the time of executing the shape correction of the high tension steel sheet, skin pass rolling can be executed with the cold rolling mill, the shape correction of the high-tensile steel sheet is enabled and the cost of equipment of a skin pass mill is reduced because the cold rolling mill is used.

4. 发明专利

JPH0647435A METHOD FOR COILING STEEL SHEET 失效
公开(公告)号：JPH0647435A
公开(公告)日：1994-02-22
申请号：JP22783192
申请日：1992-08-05
申请人： NIPPON KOKAN KK
发明人： TANAKA HAJIME , YOKOTA KAORU , SUMIYA KATSUJI , ONO NARIYUKI
IPC分类号： B21C47/02 , B65H23/195
摘要： PURPOSE:To provide a steel sheet coiling method which effectively can prevent kink phenomenon generated after coiling a thin steel sheet like a cold rolled steel sheet round a reel on the outlet side of the line. CONSTITUTION:When the steel sheet ... I, Tb=5kg/mm XAXBXC... II, Ta>Tc>Tb... III. Where Ta is tension in the starting time of coiling, Tb, tension at a low tension part, Tc, tension in the stationary tension part, A, coefficient by thickness, B, coefficient by deformation resistance of steel sheet, C, coefficient by profile of steel sheet.

5. 发明专利

JP2000292357A LASER ICP COMPONENT ANALYTICAL DEVICE 失效
公开(公告)号：JP2000292357A
公开(公告)日：2000-10-20
申请号：JP10501699
申请日：1999-04-13
申请人： NIPPON KOKAN KK
发明人： ONO NARIYUKI , MANABE TOSHIKI
IPC分类号： B24B49/12 , G01N1/28 , G01N1/32 , G01N21/73
摘要： PROBLEM TO BE SOLVED: To maintain the smoothness of an analytical surface at a set smoothness, even if the size of a grinding wheel for smoothing the analytical surface of a sample is reduced as being used. SOLUTION: This device is composed of a grinding wheel 3b for smoothing an analytical surface, a moving means 4 of a sample 1 smoothed by the grinding wheel 3b, and a laser analytical means 2. And this device is so composed that the moving means 4 moves the sample 1 whose analytical surface 3c is smoothed to the laser analytical means 2, and that the laser analytical means 2 excites, by plasma gas, fine particles of the sample 1 evaporated by laser irradiation on the analytical surface 3c, to thereby emit light, and that light generated by the light emission is spectrally diffracted by a spectroscope, to analyze components of the sample 1. In this case, the device is equipped with a measuring means 19 of the size of the grinding wheel 3b, and a control means 20 for controlling the number of revolution of a grinding wheel driving motor 3a, based on the size of the grinding wheel 3b measured by the measuring means 19, so that a circumferential speed of the grinding wheel 3b is maintained at a set value, even if the size of the grinding wheel 3b is changed.

6. 发明专利

JP2000176542A DEVICE FOR MEASURING ROTATIONAL SPEED OF LOOPER ROLLER OF CONTINUOUS ROLLING MILL 失效
公开(公告)号：JP2000176542A
公开(公告)日：2000-06-27
申请号：JP36201398
申请日：1998-12-21
申请人： NIPPON KOKAN KK
发明人： OKA MASARU , ONO NARIYUKI
IPC分类号： B21C51/00
摘要： PROBLEM TO BE SOLVED: To obtain an accurate rotational speed by removing noises by eccentric components of looper rollers from the measured rotational speed of the looper rollers by having low pass filters for removing the eccentric components of the looper rollers from the rotational speed signals of the looper rollers detected with tachometers. SOLUTION: The rotational speeds of the looper rollers 2-1 to 2-6 provided between stands are measured with the looper roller tachometers 3-1 to 3-6 and rolling speeds of the stands are measured with rolling speedometers 8-1 to 8-6. From the rolling speeds of the stands on the upstream side of the loopers during rolling and sheet speeds estimated by estimated forward slips, the rotational speeds of the looper rollers are estimated. The obtained eccentric frequencies of the looper rollers are set to band-cut filters 9-1 to 9-6 as cutoff frequency. With the band cut filters, the eccentric components of the rotational speed signals of the looper rollers 2-1 to 2-6 are removed and outputted. In this way, the rotational speeds of the looper rollers 2-1 to 2-6 are measured with high accuracy.

7. 发明专利

JPH06122011A CONTROL METHOD FOR COLD ROLLING MILL 失效
公开(公告)号：JPH06122011A
公开(公告)日：1994-05-06
申请号：JP27437592
申请日：1992-10-13
申请人： NIPPON KOKAN KK
发明人： TANAKA HAJIME , ONO NARIYUKI , KATAOKA HISAAKI , IKEUCHI NAOKI
IPC分类号： B21B37/00 , B21B37/46 , B21B41/00
摘要： PURPOSE:To improve the efficiency and yield by calculating the downtime due to welding work on the inlet side of a rolling mill, setting and controlling the optimum rolling speed. CONSTITUTION:The tip and the rear end of materials 8 for a metallic strip are connected by welding treatment, sent out to a looper 5 and the materials for the metallic strip which are stored in the looper are continuously fed to the cold rolling mill 6 and rolled. The material information of the materials 8 for the metallic strip are tracked before welding, the welding time required for welding treatment composed of plural treatments is calculated based on this information, the rolling speed of the cold rolling mill 6 is determined from the amount of storage in the looper 5 at that time and the welding time and the rolling speed of the rolling mill is controlled based on this rolling speed. Whenever each treatment of the welding treatment of the materials 8 for the metallic strip is completed, the rolling speed of the cold rolling mill is determined from the amount of storage in the looper 5 and the time required for the rest of the welding treatment at that time and the rolling speed of the rolling mill is controlled based on this rolling speed.

8. 发明专利

JPH0739915A METHOD FOR ROLLING THIN SHEET 失效
公开(公告)号：JPH0739915A
公开(公告)日：1995-02-10
申请号：JP18832893
申请日：1993-07-29
申请人： NIPPON KOKAN KK
发明人： HIRABAYASHI SATORU , SHIRAISHI KAORU , KATAOKA HISAAKI , KOSHIRO JUNJI , ONO NARIYUKI
IPC分类号： B21B13/14 , B21B37/00 , B21B37/42
摘要： PURPOSE:To accomplish an objective profile of each material without changing a roll by adjusting a lapped amount between a tapered part of a working roll having plural step tapered parts according to a profile transfer percentage of a stock to be rolled and a stock to be rolled and adjusting a deviation in the plate width direction. CONSTITUTION:The end part of the working roll 10 is provided with tapered parts 11, 12 having taper angles theta1, theta2 different according to the difference of the profile transfer percentage. When the lapped amount between the tapered parts 11, 12 and the stock to be rolled is adjusted, the rolling can be carried out without causing a large edge drop, a deviation in the plate width direction or an amount of crown is adjusted and a deadly flat plate can be produced. Accordingly, when a shift rolling is performed by a roll having a two or more step taper in a hard material, the edge drop can greatly be improved in comparison with one step taper roll, further, 10% or more can be reduced in the consumption unit of the rolling roll.

9. 发明专利

JPH06210307A METHOD AND DEVICE FOR COLD ROLLING METALLIC STRIP 失效
公开(公告)号：JPH06210307A
公开(公告)日：1994-08-02
申请号：JP2321893
申请日：1993-01-19
申请人： NIPPON KOKAN KK
发明人： HIRABAYASHI SATORU , SHIRAISHI KAORU , KATAOKA HISAAKI , KOSHIRO JUNJI , ONO NARIYUKI
IPC分类号： B21B1/28 , B21B37/00 , B21B37/28 , B21B37/48 , B21C47/00
摘要： PURPOSE:To provide a method by which the strip of stainless steel or other steel excellent in surface properties, sheet crown and shape with a cold tandem continuous mill. CONSTITUTION:The metallic strip is rolled by taking the diameters of work rolls of the last two stands 4, 5 of the final stand and the preceding one of the cold tandem mill as 100-250mm and the cumlative draft of the last two stands as 25-45% In the stands 1, 2, 3 of he preceding stage other than the last two stands, the strip is rolled by a sheet crown control stand arrangement that is constituted of a pair of work rolls whose taper parts where at least one side of end parts is taperingly ground are arranged on both sides of end parts of the material to be rolled, or a pair of upper and lower work rolls which can be crossed in the horizontal plane by making a pair with back-up rolls and rolled by taking tension before the final stand as 5-15kg/mm by providing a coiling tensile force imparting means 6 between the final rolling stand 5 and a metallic strip coiler 9.

10. 发明专利

JPH05177227A METHOD FOR CONTROLLING TENSION OF COLD TANDEM MILL 失效
公开(公告)号：JPH05177227A
公开(公告)日：1993-07-20
申请号：JP34471991
申请日：1991-12-26
申请人： NIPPON KOKAN KK
发明人： ONO NARIYUKI , TANAKA HAJIME , YAMAMOTO MASAHARU , KOSHIRO JUNJI
IPC分类号： B21B37/00 , B21B37/48
摘要： PURPOSE:To inhibit the variation of tension between stands and highly keep the accuracy of plate thickness when limitation of tension is controlled according to the rolling phenomenon in a low speed area when a rolling speed is reduced. CONSTITUTION:When the limitation of tension is controlled by the change of a draft position or when the limitation of tension is controlled by the change of roll speed, after the reduced rolling speed V is lowered below a fixed value Vc and the draft position is changed by a fixed amount or when the rolling speed comes below to a fixed value, the upper and lower limit values of the control of the limitation of tension are expanded. A tension set straight line is required according to rolling phenomena from an actual value of tension between stands when deceleration has been completed, rolling speed, a set value T of tension between stands when the upper and lower limit values of tension limitation control are expanded. In a low speed are the tension limitation control is carried out according to this tension set straight line thereafter.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式