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1. 发明专利

JPS57137828A STRESS DETECTION 失效
公开(公告)号：JPS57137828A
公开(公告)日：1982-08-25
申请号：JP2336281
申请日：1981-02-19
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： HIRASAKI SHIYUUICHI , HIROHATA KAZUHIRO , MIZUKAMI SUSUMU , ITOU SUSUMU , FUJIMOTO MINORU
IPC分类号： G01L1/00 , G01L1/12 , G01L5/04
摘要： PURPOSE:To measure stress distributions in the width direction of a belt-like magnetic material instantaneously by dividing magnetostrictive sensors to two groups, and moving the respective groups in the width direction in conformity with the respective end part positions in the direction of the belt-like magnetic material. CONSTITUTION:The 1st magnetostrictive sensor group 42 and the 2nd magnetostrictive sensor group 44 consisting of plural pieces of L-shaped magnetostrictive sensors 40 are so arranged as to be moved in the width direction by means of a positioning cylinder. The sensors 42, 44 are so disposed that the respective sensors 40 are located specularly symmetrically with respect to the centerline C of a rolled steel plate 18, whereby the stress detecting positions of the groups 42, 44 are made symmetrical on the right and left. When tension acts in the rolling direction, differences are generated in the voltage detected by the coils 66, 68 in the respective directions, and from these voltage differnces, the stress distributions of the plate 18 are determined.

2. 发明专利

JPS57108603A DETECTING METHOD FOR CONFIGURATION 失效
公开(公告)号：JPS57108603A
公开(公告)日：1982-07-06
申请号：JP18475680
申请日：1980-12-25
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： HIRASAKI SHIYUUICHI , HIROHATA KAZUHIRO , SAMEJIMA ICHIROU , ITOU SUSUMU , WAKAMATSU YUTAKA
IPC分类号： G01L5/04 , B21C51/00 , G01B7/00 , G01B7/04 , G01B7/28 , G01B21/06 , G01B21/20
摘要： PURPOSE:To reliably determine the degree of configuration defect, by a method wherein configuration is evaluated by employing a detected stress signal as it is or an absolute stress obtained by correcting the detected stress signal by an overall tension according to whether the variation of a gap signal is below or above a given value. CONSTITUTION:An excitation coil 14 and detection coils 20, 22 are disposed along the moving direction of a belt-shaped magnetic substance 18 moving at high speed in order to measure the stress applied to the belt-shaped magnetic substance 18 by utilizing magnetostriction effect. In addition, the stress distribution in the width direction of the belt-shaped magnetic substance 18 is made known by detecting the gap between the detector and the belt-shaped magnetic substance 18, and the configuration of the belt- shaped magnetic substance 18 is evaluated from the stress distribution. When the variation of the gap signal is below a given value, i.e., in a state where configuration is latent, the configuration is latent, the configuration is evaluated by employing the detected stress signal as it is. On the other hand, when the vairation of the gap signal is above the given value, i.e., in a state where the configuration is actualized, the configuration is evaluated by employing an absolute stress obtained by correcting the detected stress signal by an overall tension.

3. 发明专利

JPS56104209A SHAPE DETECTION 失效
公开(公告)号：JPS56104209A
公开(公告)日：1981-08-19
申请号：JP577280
申请日：1980-01-23
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： HIROHATA KAZUHIRO , HIRASAKI SHIYUUICHI , WAKAMATSU YUTAKA , NAKASHIMA MASAAKI
IPC分类号： G01L5/04 , G01B7/00 , G01B7/04 , G01B7/28 , G01B21/20
摘要： PURPOSE:To compensate a detection error for making precise detection by a precess wherein from the maximum value of the output signals of a shape detection cell set up in the direction of the width of rolled material each output signal is subtracted to detect the shape in the direction of the width using the value gained by the division of said value by the minimum value. CONSTITUTION:The lengthwise voltage signals VR1-VR3 and the transverse voltage signals Vr1-Vr3 of the rolled material gained by the each shape detection cells 21-23 are subtracted by the subtractors to gain the signal corresponding to the tention value sigmai. The maximum signal gained by the selector 34 is given to the subtractor, each tention signal is subtracted and the signal corresponding to the tention fluctuation quantity DELTAsigmai are given to the dividors 38-40. On the other hand the minimum value signal of the minimum value selector 41 is put into the dividers 38-40 to divide DELTAsigmai by said minimum value and the output thereof is given to the shape arithmetic unit 42 to detect the traverse shape of the rolled material. Accordingly the detection error is compensated to make it possible to perform detection with high precision.

4. 发明专利

JPS55116214A DETECTION OF TENSION AND SHAPE 失效
公开(公告)号：JPS55116214A
公开(公告)日：1980-09-06
申请号：JP2347579
申请日：1979-03-02
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： HIRASAKI SHIYUUICHI , HIROHATA KAZUHIRO , WAKAMATSU YUTAKA , NAKASHIMA MASAAKI
IPC分类号： G01L5/04 , G01B21/20 , G01B21/30 , G01L5/10
摘要： PURPOSE:To detect tension and shape simultaneously with a simple constitution by a method wherein the plural number of shape detector heads are arranged in the direction of the width of a plate in order to obtain unit tension at each point, and the data obtained are processed by arithmetic operation. CONSTITUTION:A tension signal and a plate width signal are input to an impedance selector 10 from each head, then an instruction is given to a function generator 20 so that it is to select the corresponding impedance, and a select completion signal Q is sent to a sampling dispatcher 70. If the dispatcher send a generation command to a lump generator and at the same time an integration commencement command P to a integrator 40, the functin generator 20, after receiving the output from the generator 30, send the corresponding output to the integrator 40 along the direction of an approximate function in terms of the width. Since time for integration corresponds to the plate width direction, a sample holding circuit 50 holds the sample according to a sampling command S simultaneously with the completion of integration time. A multiplier 60 outputs the total tension by multiplying the thickness of the plate. Therefore, tension and the shape are detected at the same time.

5. 发明专利

JPS5788334A STRESS DETECTOR 失效
公开(公告)号：JPS5788334A
公开(公告)日：1982-06-02
申请号：JP16499180
申请日：1980-11-21
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： HIROHATA KAZUHIRO , HIRASAKI SHIYUUICHI , WAKAMATSU YUTAKA , ITOU SUSUMU
IPC分类号： G01L5/10 , B21C51/00 , G01L5/04
摘要： PURPOSE:To perform suitable stress detection irrespectively of the change in moving speed by determining suitably the spacings of an exciting coil and detecting coils in the moving direction of a striplike magnetic material or the excitation frequency of the exciting coil. CONSTITUTION:A stress detector has an exciting coil 44 and detecting coils 46, 48 disposed along the moving direction of a striplike magnetic material 18 moving at high speeds and detects the stress applied upon the material 18 by utilizing magnetostrictive effect. At least either one of the spacings between the coil 44 and the coils 46, 48 in the moving direction of the striplike magnetic material or the excitation frequency of the coil 44 is determined in such a way that the outputs of the coils 46, 48 do not attain the maximal value by the influence of residual magnetism in accordance with the max. moving speed of the material 18.

6. 发明专利

JPS5895203A SHAPE DETECTOR 失效
公开(公告)号：JPS5895203A
公开(公告)日：1983-06-06
申请号：JP19282781
申请日：1981-12-02
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： HIRASAKI SHIYUUICHI , ISHIKAWA SHINJIROU , NAKAJIMA MASAAKI
IPC分类号： B21C51/00 , B21B38/02 , G01B7/00 , G01B7/28 , G01B7/287
摘要： PURPOSE:To prevent mutual interference between adjacent detecting heads, by exciting adjacent detecting heads with different frequencies. CONSTITUTION:Exciting oscillators 11 and 12 are set to frequencies different from each other, and detecting heads 3a-3f are connected to oscillators 11 and 12 alternately. A weak signal modulated by the internal stress of a band steel plate is induced in the secondary coil side; and since this signal includes the interference signal of adjacent detecting heads, the other frequency is rejected in turning amplifying circuits 13a-13f. After amplification of only a pertinent frequency, the signal is converted to a DC signal is synchronous detecting circuits 14a-14f, and the converted signal is connected to a shape display 15, thus displaying the distribution state of the internal stress of the band steel plate, namely, the shape of the band steel plate.

7. 发明专利

JPS5790123A METHOD AND APPARATUS FOR DETECTING STRESS 失效
公开(公告)号：JPS5790123A
公开(公告)日：1982-06-04
申请号：JP16602580
申请日：1980-11-26
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： HIRASAKI SHIYUUICHI , HIROHATA KAZUHIRO , ITOU SUSUMU , WAKAMATSU YUTAKA
IPC分类号： G01L5/10 , G01L5/04
摘要： PURPOSE:To permit a proper detection of stress independently of the change in moving speed, by disposing a detection coil so as to be offset with respect to the moving locus of a strip magnetic substance passing right above an excitation coil. CONSTITUTION:By inclining an iron core 40 of an L-shaped detector at a given angle theta1 (e.g., 15-30 deg.) with respect to the rolling direction (moving direction) of a rolled steel plate, a rolling direction detecting coil 46 is disposed so as to be offset more than 1/2 of the magnetic pole width(b) of the iron core 40 along the width direction of the rolled steel plate with respect to the moving locus B of the rolled steel plate passing right above the center of an excitation coil 44, and also an iron core 42 disposed along the width direction of the plate is inclined at a given angle theta2 with respect to the plate width direction. Thereby, the residual magnetism of the rolled steel plate excited by the excitation coil 44 never passes right above the detecting coil 46 and consequently the voltage induced in the detecting coil 46 is hardly affected by the rolling speed. Accordingly, it becomes possible to perform a proper detection of stress.

8. 发明专利

JPS56157802A SHAPE DETECTOR 失效
公开(公告)号：JPS56157802A
公开(公告)日：1981-12-05
申请号：JP6056180
申请日：1980-05-09
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： HIRASAKI SHIYUUICHI , HIROHATA KAZUHIRO , KANETANI TADASHI , ITOU SUSUMU
IPC分类号： G01L5/04 , B21C51/00 , G01B7/00 , G01B7/24 , G01B7/28 , G01L5/10
摘要： PURPOSE:To permit a distortion detection with high accuracy by providing at least one unit for detecting the stress in the width and rolling directions midway in the width direction, and arranging a plurality of units for detecting the stress in the rolling diretion in parallel in the width direction. CONSTITUTION:A detecting unit 20 for the width and rolling directions comprising an exciting coil 1, U-shaped cores 7 and 8 and detecting coils 2 and 3 is arranged in the center, and on both sides thereof, a plurality of detecting units 30a... for the rolling direction are provided each comprising an exciting coil 15, a U-shaped core 14 and a detecting coil 16. When a steel plate passes with a gap between the end of each core, the voltages of the detecting coils 2, 3, 16, 18... vary according to the wavy distortion resulting from the unvenness of the internal stress. Said output voltages are rectified by means of rectifiers 21a, 21b, 31a.... The differences E20, E30a, E30b... between them and the DC voltage of the detecting coil 3 are the stress detecting voltages of the respective detecting units. The output voltage in the normal condition is previously balanced by means of the variable resistor of each rectifier circuit. Thereby, a distortion detection of high accuracy is made possible.

9. 发明专利

JPS583712A CONTROLLING METHOD FOR SHEET SHAPE IN ROLLING MILL 失效
公开(公告)号：JPS583712A
公开(公告)日：1983-01-10
申请号：JP10001081
申请日：1981-06-26
申请人： KAWASAKI STEEL CO
发明人： OKABE TOSHIROU , NAOI TAKAYUKI , HIRASAKI SHIYUUICHI , MIZUKAMI SUSUMU , HIROHATA KAZUHIRO , FUJIWARA TAKANORI
IPC分类号： B21B37/28 , B21B37/00 , B21B37/38
摘要： PURPOSE:To enable an accurate titled controlling, by predicting the change of sheet shape within a time lag of a feed-back controlling while the rolling speed changes and performing jointly a feed-forward controlling in accordance with said controlling and predicted results. CONSTITUTION:A sheet shape at the exit of the final stand 12 having a sheet shape controlling means consisting of a bender and a press-down device 20 is detected by a shape detector 16 to be controlled by a feed-back controlling system constituting of a shape discriminating device 22 and a feed-back controlling device 24. At that time, while the rolling speed is changed, the change of sheet shape caused by he change of the rolling speed within a time lag of the feed- back controlling is predicted, and a necessary operating quantity DELTAF of the shape controlling means is computed by a correcting quantity operator 38 of a feed-forward controlling system in accordance with the predicted results. Then a bender operating quantity F of a controlling device 24 and the operating quantity DELTAF are added to control the shape controlling means of the stand 12 by the feed-forward controlling through comparison operators 42 and 50.

10. 发明专利

JPS583711A CONTROLLING METHOD FOR SHEET SHAPE IN CONTINUOUS ROLLING MILL 失效
公开(公告)号：JPS583711A
公开(公告)日：1983-01-10
申请号：JP10000981
申请日：1981-06-26
申请人： KAWASAKI STEEL CO
发明人： OKABE TOSHIROU , NAOI TAKAYUKI , HIRASAKI SHIYUUICHI , MIZUKAMI SUSUMU , HIROHATA KAZUHIRO , FUJIWARA TAKANORI
IPC分类号： B21B37/00 , B21B37/38
摘要： PURPOSE:To enable titled control without a time lag, by controlling the controlling means of the final stand by feed-forward control after obtaining a well sheet shape at the exit of the fianl stand by feedback control, in a fixed speed rolling. CONSTITUTION:This continuous rolling mill has the 1st stand 11 to which an automatic sheet thickness controlling device is provided, the 2nd-4th stands 12- 14, and the final stand 15 to which a sheet shape controlling means consisting of a bender 26 and a press-down device 28 is provided. Then in a fixed speed rolling, after when a sheet shape discriminating device 30 discriminates, according to the output of a shape detector 20, that a well sheet shape at the exit of the final stand is once obtained by feedback control, the successive controlling is performed as follows. That is, the controllig of the shape controlling means of the stand 15, is performed by a feed-forward controlling device 44 in accordance with the change of sheet shape at the exit side of the stand 11 detected from the change of rolling load of the stand 11 obtained by detection of a load cell 32.

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