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1. 发明专利

JPH0763613A RADIATION THERMOMETER 失效
公开(公告)号：JPH0763613A
公开(公告)日：1995-03-10
申请号：JP20924993
申请日：1993-08-24
申请人： KOBE STEEL LTD
发明人： AKAMATSU MASARU , MANABE CHITAYOSHI , YANAI TOSHIYUKI , ARAI AKIO , SUZUKI AKIO
IPC分类号： G01J5/00 , G01J5/10
摘要： PURPOSE:To accurately correct fluctuation of the emissivity irrespective of a reflection characteristic of the surface of an object to be measured by providing a radiation means and a detection means and particularly a shading means. CONSTITUTION:Infrared radiation from a reference heat source 2 (a radiation means) is applied to the surfaces of an object 1 to be measured via beam splitter 6 by releasing a shutter 5. Reflected radiation from the surface of the object 1 is made to converge on sensors 3a-3c (a detection means) via a shading plate 4 by reflecting mirrors 7a, 7b to be detected thereby. The outputs of the sensors 3a-3c are confirmed by means of a computing device 8. A width of the shading plate 4a is fixed at a prescribed value, then the shading plate 4 is rotated. The three outputs of the sensor 3a-3c are checked by the device 8 so that the device calculates the emissivity based on a maximum and a minimum values of the outputs. Next, the shutter 5 is set in a closing condition and a slit section 4a of the shading plate 4 is fully opened. Infrared radiation emitted from the object itself is converged by the reflecting mirror 7b and detected by the sensor 3c. A surface temperature of the object 1 is calculated by using the emissivity.

2. 发明专利

JPH0720094A ULTRASONIC OSCILLATION MEASURING APPARATUS 失效
公开(公告)号：JPH0720094A
公开(公告)日：1995-01-24
申请号：JP16144093
申请日：1993-06-30
申请人： KOBE STEEL LTD
发明人： MORIMOTO TSUTOMU , SUZUKI AKIO , ARAI AKIO , OGAWA GAKUO , TAKAMATSU HIROYUKI , YANAI TOSHIYUKI , AKAMATSU MASARU
IPC分类号： G01N29/00
摘要： PURPOSE:To enable ultrasonic oscillation to be measured relatively stably even when a sample makes displacement and the like from this measuring apparatus. CONSTITUTION:Excitation light is emitted from a pulse laser l, and measuring light from a measuring laser 3. When a material 2 makes displacements vertically, an amount of this displacement is detected by PSD 18, and a beam diameter conversion lens 7 is adjusted by movement in its axial direction so that scattered light 31 from the surface 2a of the material 2 may be collimated as predetermined. When a scattered point of the scattered light 31 is displaced from the optical axis of a lens 4, an amount of this displacement is detected by PSD 21, and mirrors 8, 9 are adjusted by proper swing so that the angle of incidence into an interferometer 13 may be a predetermined angle. This makes reflected light from the material 2 preferably enter a Fabry-Perot interferometer 13. Further, this measuring apparatus can suppress unfavorableness due to displacements by enabling the same surface of the sample to be irradiated with excitation light and measuring light through the same optical axis.

3. 发明专利

JPH06265525A APPARATUS FOR MEASURING PARTICLE SIZE OF CRYSTAL OF STEEL PLATE 失效
公开(公告)号：JPH06265525A
公开(公告)日：1994-09-22
申请号：JP5385793
申请日：1993-03-15
申请人： KOBE STEEL LTD
发明人： YANAI TOSHIYUKI , SUZUKI AKIO , ARAI AKIO , OGAWA GAKUO , AKAMATSU MASARU , MORIMOTO TSUTOMU
IPC分类号： G01N27/72
摘要： PURPOSE:To obtain the particle size of crystals in a nondestructive and contactless manner not only for a hot rolled steel plate, but for a cold rolled steel plate having a different texture from that of the hot rolled steel plate. CONSTITUTION:For each of three or more kinds of steel plates, the actually- measured particle size of crystals, an average of values corresponding to the coercive force detected by a measuring part 40, the size of the magnetic anisotropy detected by a magnetic anisotropy measuring part 50, and the magnetic permeability measured by a permeability measuring device 60 are input to a computer 70. The computer 70, using the data, obtains a regression coefficient of each descriptive variable in a regression formula having an inverse umber of the particle size as a target variable, and the average value of values corresponding to the coercive force, the size of the magnetic anisotropy and the magnetic permeability as the descriptive variables. Moreover, the computer 70 obtains the particle size of crystals of a steel plate to be indirectly measured by substituting the average value of values corresponding to the coercive force, the size of the magnetic anisotropy and the magnetic permeability into the regression formula with the determined regression coefficient.

4. 发明专利

JPH0447237A RADIATION TEMPERATURE MEASURING APPARATUS 失效
公开(公告)号：JPH0447237A
公开(公告)日：1992-02-17
申请号：JP15622890
申请日：1990-06-14
申请人： KOBE STEEL LTD
发明人： MANABE CHITAYOSHI , YANAI TOSHIYUKI , ARAI AKIO , SUZUKI AKIO
IPC分类号： G01J5/00 , G01J5/10
摘要： PURPOSE:To prevent errors in the measurement of a temperature as caused by a difference of a radiating part by impinging radiation into a heat radiation detector from the same part of a small comparison heat source. CONSTITUTION:Radiation from a comparison heat source 3 as emitted at an opening 3b is made parallel with a collimator lens 5 to be introduced to a rotary sector 7. Then, a blade part reflects the radiation from the heat source 3 when it crosses an extension 3c from the center of the heat source 3 to intercept the radiation from an object 1 to be measured itself simultaneously. The radiation from the heat source 3 undergoes a detection 2 of radiation passing through a condenser lens 6 to be converted into an electrical signal. Then, when the blade part gets off the extension 3c, the radiation from the object to be inspected itself passing a space part of the sector 7 and the radiation from the heat source 3 as reflected from the object 1 to be measured undergoes a detection of heat radiation 2 passing through the lens 6. Then, an electrical signal of the former is inputted into a comparison control circuit 11 as comparison electrical signal and an electrical signal is inputted thereinto as measuring electrical signal alternately from a synchronous rectifier circuit 10. Then, an output of a heater power source 4 is adjusted so that a difference is reduced to zero between the comparison electrical signal and the measuring electrical signal thereby controlling a temperature of a heat source 3.

5. 发明专利

JPH0443956A HEAT RESISTANCE TYPE EDDY CURRENT DETECTOR 失效
公开(公告)号：JPH0443956A
公开(公告)日：1992-02-13
申请号：JP15115690
申请日：1990-06-08
申请人： KOBE STEEL LTD
发明人： SUZUKI AKIO , NAGAI NOBUYUKI , ARAI AKIO , YANAI TOSHIYUKI
IPC分类号： G01N27/90
摘要： PURPOSE:To enhance the effect of prohibiting the heat transfer to the heat resistance type eddy current detector by forming a water film between the surface of the eddy current detector which faces high-temp. steel products and the high-temp. steel products and blowing gas to this water film. CONSTITUTION:The heat resistance type eddy current detector is constituted by inserting a core 2 into a detecting coil 1, integrally molding the detecting coil 1 and the core 2 of a resin 3 together with a coil supporting base 4 and fitting the assembly into the storage space in a housing 5 having a tapered surface. The coil supporting base 4 is fixed to the housing 5. The water film 17 is formed of the cooling water from a nozzle 8 for water installed at 45 deg. with the surface of a continuous casting slab 16 toward the central part of the eddy current detector right under the eddy current detector and further, the water film 17 is moved to right under the eddy current detector by the air blown out of a nozzle 9 for air, by which the cooling effect is enhanced.

6. 发明专利

JPH0443928A MEASURING METHOD FOR EMISSIVITY AND TEMPERATURE OF OBJECT TO BE MEASURED 失效
公开(公告)号：JPH0443928A
公开(公告)日：1992-02-13
申请号：JP15115790
申请日：1990-06-08
申请人： KOBE STEEL LTD
发明人： MANABE CHITAYOSHI , YANAI TOSHIYUKI , ARAI AKIO , SUZUKI AKIO
IPC分类号： G01J5/00
摘要： PURPOSE:To accurately find the temperature of the object to be measured by varying the measurement distance of the pocket and finding variation in the output of a heat radiation detector, and finding the emissivity of the object from the output variation value and data on an object whose emissivity is already known. CONSTITUTION:Both radiation detection heads 13a and 13b are arranged at the same distance from the object 16 to be measured and the output of each heat radiation detector 12 corresponding to the same measurement distance h1 is inputted to a storage arithmetic unit 14. When the outputs are both supplied, the storage arithmetic unit 14 calculates the emissivity epsilons of the object 16. Then the obtained emissivity epsilons is used to find the output E(T) of the heat radiation detector 12 at the time of a black body from, for example, E(epsilons,C1)/epsilons, thereby easily finding the temperature T of the object body. The temperature T of the object body is displayed on a display device 15. Thus, the emissivity of the object body is also found, so the temperature of the object body can accurately be found without any temperature measurement error due to a difference in emissivity.

7. 发明专利

JPH02118007A METHOD FOR PREDICTING LOWERING OF FURNACE HEAT IN BLAST FURNACE 失效
公开(公告)号：JPH02118007A
公开(公告)日：1990-05-02
申请号：JP27047088
申请日：1988-10-26
申请人： KOBE STEEL LTD
发明人： NAGAI NOBUYUKI , ARAI AKIO , MATSUDA KOICHI , KADOGUCHI KOREHITO
IPC分类号： C21B5/00
摘要： PURPOSE:To accurately predict lowering of molten iron temp. by measuring difference of inner wall temps. at plural positions in a blast furnace at the prescribed time interval and changing threshold value based on the total value corresponding to each temp. difference or the standard deviation of the sum to predict the lowering of furnace heat. CONSTITUTION:The plural inner wall thermometers are set in height direction and circumferential direction in the blast furnace and the inner wall temp. difference are measured at the prescribed time interval. When the total value of the parts showing the positive values in the inner wall temp. difference at a time exceeds the threshold value, the prediction of lowering of the furnace heat is executed. When the total value of the parts showing the negative value in the inner wall temp. difference exceeds the threshold value, the lowering of the furnace heat is predicted. Further, when the sum of moving average values in the prescribed time range in the parts showing the positive values in the inner wall temp. difference exceeds the threshold value, the prediction of lowering of the furnace heat is executed. At the time of predicting the lowering of the furnace heat, the threshold value in the predicting means is changed at every moments based on the standard deviation of the total value corresponding to each temp. difference or the standard deviation of the above sum in the past fixed interval. By this method, the lowering of the molten iron temp. can be accurately predicted.

8. 发明专利

JPH01178846A DETECTING METHOD OF FACE OVERTURN OF POLYGON MIRROR 失效
公开(公告)号：JPH01178846A
公开(公告)日：1989-07-17
申请号：JP300488
申请日：1988-01-08
申请人： KOBE STEEL LTD
发明人： KAWASHIMA SADAO , ARAI AKIO
IPC分类号： G01C19/66 , G01C19/58 , G01M11/00
摘要： PURPOSE:To detect an error in face overturn of a mirror face, by calculating the position of the center of gravity of a part of expansion of a light quantity distribution by a formula, so as to determine the amount of shift of a computed gravity center position. CONSTITUTION:A laser beam from a laser oscillator 1 is made to fall on each mirror face of a polygon mirror 3, and a reflected beam of light therefrom is sensed by an image sensor 4. In the image sensor 4, a sensed light quantity distribution of expansion of the reflected beam of light along the direction intersecting, perpendicularly intersecting in particular, the scan direction of the polygon mirror 3, is obtained by a plurality of light-sensing elements in the number of (n) arranged in said direction. Then, the position X' of the center of gravity of the sensed light quantity distribution is determined from the formula of X'[where D(i) is a sensed light quantity output of an i-th light-sensing element], it is interpolated in the length between the light-sensing elements, and an angle of face overturn of the given mirror face is led out.

9. 发明专利

JPH01176929A ROTATION UNEVENNESS DETECTOR FOR POLYGON MIRROR 失效
公开(公告)号：JPH01176929A
公开(公告)日：1989-07-13
申请号：JP100988
申请日：1988-01-06
申请人： KOBE STEEL LTD
发明人： KAWASHIMA SADAO , ARAI AKIO
IPC分类号： G01C19/72 , G01C19/58 , G01M11/00
摘要： PURPOSE:To measure rotation unevenness more accurately by photodetecting reflected light from the same mirror surface by photodetectors at two fixed points and obtaining the time for reference clock pulse counting. CONSTITUTION:A pair of a lens 9a and a photodetector 4a and a pair of a lens 9b and a photodetector 4b are provided in the optical path of reflected light and the photodetectors 4a and 4b are scanned at the focus positions of the lenses 9a and 9b to photodetect reflected light beams. The photodetectors 4a and 4b output their quantities of photodetection by photoelectric variation and their outputs are sent to a counter 7 through amplifiers 5a and 5b and comparators 6a and 6b. Then a start pulse which opens the gate of the counter with the leading edge of the rectangular wave sa from the photodetector 4a is generated and a stop pulse which opens the gate of the counter 7 with the leading edge of the rectangular wave sa from the photodetector 4a is generated; and the counter 7 counts reference clock pulses which pass for a gate open time DELTAT and sends data to an arithmetic processor 8. The processor 8 performs averaging processing and calculates the largest deviation and standard deviation to detect the rotation unevenness totally.

10. 发明专利

JPS63279147A SURFACE DEFECT INSPECTOR 失效
公开(公告)号：JPS63279147A
公开(公告)日：1988-11-16
申请号：JP11394587
申请日：1987-05-11
申请人： KOBE STEEL LTD
发明人： NAKAI YASUHIDE , NISHIMOTO YOSHIRO , YONEDA YASUSHI , ARAI AKIO
IPC分类号： G01B11/30 , G01N21/88 , G01N21/95 , G11B5/84
摘要： PURPOSE:To achieve a highly accurate measurement of a surface roughness eliminating effect due to vibration of an object to be inspected, by detecting several reflected beams of beams irradiating different positions of the surface of an object to be inspected from several light sources to determine a distance therebetween. CONSTITUTION:Two laser beams L1 and L2 from a laser light source are made to irradiate vertical to the surface of an object 2 to be inspected such as magnetic disc through a polarized beam splitter 1 at an interval of a distance l. Reflected beams R1 and R2 on the surface of the object 2 being inspected of the beams L1 and L2 are reflected with the splitter 1 to be incident respectively into brightness position detectors 3a and 3b such as PSD. Then, the reflected beam R1 is checked to deviate in the incident position from a reflected beam R01 with no deffect due to a defect on the surface of the object 2 being inspected, hence detecting a surface defect. Thus, a difference between the positional deviation thus obtained and that of the other reflected beam R2 is detected with a comparator 4, thereby enabling the removal of effect due to vibration of the object 2 being inspected.

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