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1. 发明专利

JPS6365361A EDDY CURRENT FLAW DETECTION SENSOR 失效
公开(公告)号：JPS6365361A
公开(公告)日：1988-03-23
申请号：JP20970486
申请日：1986-09-08
申请人： NIPPON KOKAN KK
发明人： TAKAHASHI IKUO , TANABE HIDEYA , KOMINE ISAMU
IPC分类号： G01N27/90
摘要： PURPOSE:To detect the flaw of a metallic material in the circumferential direction at a high SN ratio by providing a flaw detection sensor composed of a couple of coils which are so excited as to generate lines of magnetic force in the axial direction of the material to be inspected successively in the axial direction of the material to be inspected. CONSTITUTION:The eddy current flaw detection sensor 29a is provided successively in the axial direction of a round billet 1 as the material to be inspected and so wound with a conductor wire to have equal impedance, and the sensor consists of the couple of coils which are so excited as to generate lines of magnetic force in the axial direction of the material to be inspected. Then an AC signal outputted by a reference frequency signal generator 37 is supplied to both coils of the flaw detection sensor 29a through an amplifier 38 to generate an eddy current in the round billet 1 with the AC signal. When the flaw of the round billet 1 in t he circumferential direction is positioned between the magnetic poles of either coil, the eddy current varies. A phase detector 49 detects variation of the eddy current as variation in coil impedance and outputs a flaw detection signal.

2. 发明专利

JPS62202006A METHOD FOR MEASURING HEAT FLOW RATE RATIO IN BLAST FURNACE 失效
公开(公告)号：JPS62202006A
公开(公告)日：1987-09-05
申请号：JP4158186
申请日：1986-02-28
申请人： NIPPON KOKAN KK
发明人： TAKAHASHI IKUO , KIMURA RYOSUKE , YAMAOKA YOJIRO , TAKEBE TAKASHI
IPC分类号： G01K13/00 , C21B7/24 , G01N25/00 , G01N25/18
摘要： PURPOSE:To scrupulously measure the heat flow rate ratio in a blast furnace with good accuracy by providing many gas temp. detection points apart at microsections in the lumped zone in the blast furnace and making calculation from the calculated value of the raw material temp. difference and gas temp. difference in the microsections. CONSTITUTION:At least 4 points of the gas temp. detection points 1-4 are provided apart at the microsections L in the height direction in the lumpzed zone in the blast furnace 30. Further plural pressure measuring sensors (not shown) are provided at prescribed equal intervals and the descending speeds of the raw material 31 charged in the blast furnace 30 at the gas temp. detection points are measured from the measured differential pressures. The moving time of the raw material 31 is calculated from the descending speeds of the raw material 31 and the distance L between the microsections. The gas temp. measurement data at the above-mentioned 4 points are blocked for each of the above-mentioned moving time interval. The temp. measurement data are averaged for each of the blocking sections and the raw material temp. difference in the microsections L is calculated from the average value. The heat flow rate ratio is calculated from the raw material temp. difference and gas temp. difference in the microsections L.

3. 发明专利

JPH0378930B2 失效
公开(公告)号：JPH0378930B2
公开(公告)日：1991-12-17
申请号：JP26968185
申请日：1985-11-30
申请人： NIPPON KOKAN KK
发明人： SANO KAZUO , UESUGI MITSUAKI , TAKAHASHI IKUO , TANABE HIDEYA
IPC分类号： G01B11/30 , G01N21/89 , G01N21/894

4. 发明专利

JPS6238307A DIMENSION MEASURING INSTRUMENT FOR SQUARE METALLIC SHEET 失效
公开(公告)号：JPS6238307A
公开(公告)日：1987-02-19
申请号：JP17698785
申请日：1985-08-13
申请人： NIPPON KOKAN KK
发明人： TAKAHASHI IKUO , TANABE HIDEYA
IPC分类号： G01B11/04 , G01B11/26
摘要： PURPOSE:To automatically measure the width, length and right angle of a square metallic sheet on-line at the cut line by constituting a photoelectric tube detector, strobo emitter, linear array detector and computing element, etc. CONSTITUTION:Linear array detector 4a-4f is set is advance automatically at the position corresponding to the given target width, length and right angle of a metallic sheet 1 for the square metallic sheet 1 transferred by the transfer table 2 of a cut line. When the metallic sheet 1 is transferred and the tip part 1a thereof reaches to the lower part of the photoelectric tube detector 3, the detecting part 3 detects the passage of the metallic sheet 1 and issues an emitting command simultaneously to six strobo emitters 5 at the detecting timing thereof. The six emitters 5 irradiate the end face of the metallic sheet 1 passing through with emitting simultaneously. The six linear array detectors 4 detect the end face position of the metallic sheet 1 simultaneously with synchronizing by the reflecting light from the end face of the metallic sheet 1. The dimension measurement of the metallic sheet 1 is then performed by operating the width, length and right angle of the metallic sheet 1 by the computing element from the detected end face position.

5. 发明专利

JPS6016300B2 失效
公开(公告)号：JPS6016300B2
公开(公告)日：1985-04-24
申请号：JP1777677
申请日：1977-02-22
申请人： NIPPON KOKAN KK
发明人： TAKAHASHI IKUO , TAKENAKA MASAKI
IPC分类号： C21D1/00 , B22D11/124 , B22D11/22

6. 发明专利

JPS53102833A SECONDARY COOLING WATER CONTROL METHOD AND APPARATUS IN CONTINUOUS CASTING INSTALLATION 失效
公开(公告)号：JPS53102833A
公开(公告)日：1978-09-07
申请号：JP1777677
申请日：1977-02-22
申请人： NIPPON KOKAN KK
发明人： TAKAHASHI IKUO , TAKENAKA MASAKI
IPC分类号： C21D1/00 , B22D11/124 , B22D11/22

7. 发明专利

JPH032428B2 失效
公开(公告)号：JPH032428B2
公开(公告)日：1991-01-16
申请号：JP6446984
申请日：1984-03-31
申请人： NIPPON KOKAN KK
发明人： TAKAHASHI IKUO , SHIBATA YOICHI , SATO JUJI , KIMURA RYOSUKE , IZUMI MASARO
IPC分类号： G01P5/22 , G01P5/18

8. 发明专利

JPS62129746A EDGE PINHOLE DETECTOR 失效
公开(公告)号：JPS62129746A
公开(公告)日：1987-06-12
申请号：JP26968185
申请日：1985-11-30
申请人： NIPPON KOKAN KK
发明人： SANO KAZUO , UESUGI MITSUAKI , TAKAHASHI IKUO , TANABE HIDEYA
IPC分类号： G01B11/30 , G01N21/89 , G01N21/894
摘要： PURPOSE:To obtain a low-cost pinhole detector which permits a smaller size and a higher operability, by employing a diffusion projector adapted to project light weak the thickness direction of an object to be inspected and intense in other directions as such for an edge pinhole detector to enable highly accurate detection of a pinhole defect. CONSTITUTION:A light emitted from a strobe light source 42 is turned to a parallel light with a collimation lens 41 and then is projected to a fiber plate 31 at an angle of theta (thetanot equal to 0 deg.). The light totally reflected repeatedly within fibers of the fiber plate 31 and emitted. The light is weak in the thickness direction of a strip body 1 and intense in other directions. The strobe light source 42 in a diffusion projector 40 emits light through a strobe driver 50 by a synchronous signal S2 from a synchronizing circuit 52 and the strip body 1 moving in the direction the arrow beta is irradiated with a diffusion light emitted from the project 40. In response to the synchronous signal S1 from the circuit 52, a TV camera 23 starts operating to detect a pinhole near the edge 1a of the strip body 1 with a pinhole detection circuit 53.

9. 发明专利

JPS62228404A METHOD FOR MEASURING FLOW RATE OF GAS IN BLAST FURNACE 失效
公开(公告)号：JPS62228404A
公开(公告)日：1987-10-07
申请号：JP7126186
申请日：1986-03-31
申请人： NIPPON KOKAN KK
发明人： TAKAHASHI IKUO , KIMURA RYOSUKE , YAMAOKA YOJIRO , TAKEBE TAKASHI
IPC分类号： C21B5/00 , C21B7/24 , G01P5/10
摘要： PURPOSE:To measure the instantaneous flow rate value of the gas in a blast furnace with good accuracy by measuring the gas temp. in the many positions spaced from each other at a slight section in the height direction of the lump zone in the furnace, calculating the temp. difference of the solid raw material therefrom to determine a heat flow ratio and measuring the flow rate of the gas from the heat flow ratio and raw material descending speed. CONSTITUTION:Gas temp. detecting points 1-4 consisting of 4 points of thermocouple spaced from each other at the slight spacing L of about 10cm are provided in the solid raw material layer in the blast furnace 30. The descending speed of the solid raw material 31 in the gas temp. detecting part is measured and the moving time of the raw material 31 is calculated from the distance L in the above-mentioned slight section. The temp. measurement data measured at the above-mentioned 4 points of the temp. detecting points is blocked at every interval of the calculated moving time and the temp. measurement data is averaged at every blocking section. The raw material temp. difference in the slight section is calculated from the value thereof and the heat flow ratio is calculated from the raw material temp. and temp. difference of the gas in said section. The flow rate of the gas in the blast furnace is then quickly calculated from the heat flow ratio obtd. in such a manner, the raw material descending speed and the specific heats of the gas and the raw material.

10. 发明专利

JPS62129745A DIFFUSION LIGHT ILLUMINATOR 失效
公开(公告)号：JPS62129745A
公开(公告)日：1987-06-12
申请号：JP26968085
申请日：1985-11-30
申请人： NIPPON KOKAN KK
发明人： SANO KAZUO , UESUGI MITSUAKI , TAKAHASHI IKUO , TANABE HIDEYA
IPC分类号： G01B11/30 , G01N21/894
摘要： PURPOSE:To obtain a diffusion illuminator with a higher diffusing property in the emission light quantity level but low therein vertical to the light diffusion surface, by arranging a parallel light source which is adapted to irradiate a light parallel with an optical fiber plate surface at an angle of incidence not zero to the incident optical axis thereof. CONSTITUTION:Light emitted from a strobe light source 13 is turned to a parallel light with a collimator lens 12 and made incident into an optical fiber plate 11 at an angle theta of incidence (theta not equal to zero). The light in the optical fiber of the optical fiber plate 11 is totally reflected repeatedly and made to emit along a conical plane with the apex of 2theta. A pinhole near the edge of a moving strip body 3 irradiated with the emission is detected with TV camera 6.

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