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1. 发明专利

JPH1068716A MANUAL ULTRASONIC FLAW DETECTION SKILL TRAINING DEVICE 失效
公开(公告)号：JPH1068716A
公开(公告)日：1998-03-10
申请号：JP22480296
申请日：1996-08-27
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KOGURE SUMIO , YOSHIDA YOJI , MATSUO TAKASHIRO , HIGUCHI SHINICHI
IPC分类号： G09B9/00 , G01N29/00
摘要： PROBLEM TO BE SOLVED: To evaluate flaw detection skill of a flaw detection technician by detecting flaws of a testpiece having a lot of straight grooves provided in its bottom by ultrasonic waves and automatically compensating and displaying a reference flaw detecting wave height read from a database. SOLUTION: A testpiece 20 has no other material defects except for straight grooves. The material defects are stored in a database as a reference flaw detection waveform data and are distributedly arranged in an area equivalent to a flaw detection face of the testpiece 20 as virtual detects in software. A flaw detection technician reads out position coordinates of a probe 11 as the address of the reference flaw detection waveform data, scans it for a flaw detection while watching the waveform displayed on a display 34, and stores the defect echo height in a data storage processing device 33 based on the flaw detection waveform data. When the reference flaw detection waveform is displayed on the display 34 and the detect echo height is stored, the change component should be compensated so that the echo height from the straight grooves is utilized as its compensation data in this device.

2. 发明专利

JPH09218167A LIQUID PENETRATION DETECTING METHOD AND DEVICE 失效
公开(公告)号：JPH09218167A
公开(公告)日：1997-08-19
申请号：JP2502896
申请日：1996-02-13
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KOGURE SUMIO , FURUKAWA HIDEYASU , SASAKI TSUKASA , HIGUCHI SHINICHI , YOSHIDA YOJI
IPC分类号： G01N21/91 , G01N21/33 , G21C17/003
摘要： PROBLEM TO BE SOLVED: To reasonably drain locally and dry the neighborhood of inspected surface and improve a function for detecting a defect. SOLUTION: An inspection box 2 having a facility necessary for the liquid penetration detection is provided for inspected surface 1 immersed in water, and formed to discharge water at water depth equal to or larger than 10m by use of a jet pump 7 in a condition exposed to the atmosphere. In addition, the box 2 is induction heated by use of a high-frequency induction heating coil 40. As a result, a defect can be heated to such an extent as deep inside at a pre-treatment process. At the same time, after a water washing process, the inside of the box 2 is kept at negative pressure under the application of induction heat with the high-frequency heating coil 40 as well as under the operation of a vacuum pump 22, thereby forcing a residual penetrant in the defect to ooze out. According to this construction, a device can be made small and simplified. At the same time, a function for detecting a defect can be substantially improved.

3. 发明专利

JPS636458A MAGNETIZATION DEVICE FOR MAGNETIC FLAW DETECTION 失效
公开(公告)号：JPS636458A
公开(公告)日：1988-01-12
申请号：JP14954886
申请日：1986-06-27
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： YOSHIDA YOJI , KOGURE SUMIO
IPC分类号： G01N27/83
摘要： PURPOSE:To magnetize the internal surface of a test material that power feeding rods such as a turbine rotor core hole can not be penetrated by bending the power feeding rods in a U shape and rotating them in the hole. CONSTITUTION:A flowing-in side cable 41 and a flowing-out side cable 42 are connected to supply a current to the power feeding rods 11 and 12. A current circuit is formed by providing cables 43 and 44 and connection terminals 45 and 46 so as to adjust the gap between the feeding rods 11 and 12 according to the hole diameter of the test material 2. A magnetization system and measurement sensors 71 and 72 are inserted into the hole by running carriages 81 and 86 and rotated by a rotor 82 driven by an electric motor 83 through gears 84 and 85. When the running carriage 81 is run in the hole axially, the rotor 82 is rotated to measure the leaked magnetic flux at a material defect part by sensors 71 and 72 while magnetizing the inner peripheral surface of the opening part of one hole entirely.

4. 发明专利

JPS60127455A CRACK TESTER 失效
公开(公告)号：JPS60127455A
公开(公告)日：1985-07-08
申请号：JP23428583
申请日：1983-12-14
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KOGURE SUMIO , KURODA IWAO
IPC分类号： G01N27/90
摘要： PURPOSE:To enable the flaw detection of the flaw indifinite in directionality present in the surface layer part of a metal material, by assembling an orthogonal coil type detection coil in a probe coil. CONSTITUTION:When AC is supplied to left and right probe coils 2A, eddy currents 8 are generated in a material 7 to be subjected to flaw detection. Because the intensities of these eddy currents are same in left and right, no signal is generated in an output terminal 9 because of a theory of a Wheatstone bridge. On the other hand, when a flaw 10 is present in the material 7 to be subjected to flaw detection, the eddy current is reduced by the flaw and the balance of the probe coils becomes non-equilibrium and an AC signal is generated at the terminal 9 and flaw detection is enabled.

5. 发明专利

JPS59222703A UNDERWATER FILM THICKNESS MEASURING DEVICE 失效
公开(公告)号：JPS59222703A
公开(公告)日：1984-12-14
申请号：JP9563983
申请日：1983-06-01
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KOGURE SUMIO , KURODA IWAO
IPC分类号： G01B7/06 , G01B7/00
摘要： PURPOSE:To suppress errors in measurement due to water temperature, by providing comparing probes and a resistance adjuster. CONSTITUTION:Three reference test pieces 3 are used in an atmosphere. The zero point adjustment of probes is performed by a measuring device 5 and resistors 11 and 12 of a resistance adjuster 10. Then a reference standard test piece 3 is contacted to the tip of a reference probe 2, and comparing test piece 12 is contacted to the tip of a comparing probe 11. A measuring probe is provided in the vicinity of bodies to be measured 7 and 8 in water 1 independently. Immediately before measurement, the switch 13 of the resistance adjuster 10 is connected to the terminal 14 of the comparing probe 11. The balance of the measuring device 5 is adjusted so that the comparing test piece 12 indicates zero or a known film thickness. After the adjustment, the switch 13 of the resistance adjuster 10 is connected to the terminal 15 of the measuring probe. The thickness of the film to be measured 8 is measured by the measuring probe 6.

6. 发明专利

JPS5935138A Shape-discrimination type 2 mode angle beam probe 失效
标题翻译：形状辨别型2型角度光束探头
公开(公告)号：JPS5935138A
公开(公告)日：1984-02-25
申请号：JP14463782
申请日：1982-08-23
申请人： Hitachi Eng Co Ltd , Hitachi Ltd
发明人： KOGURE SUMIO , KATOU MASAYUKI , KURODA IWAO
IPC分类号： G01B17/00 , G01N29/06 , G01N29/24 , G01N29/44
CPC分类号： G01N29/0618 , G01N29/2487 , G01N29/4445 , G01N2291/0421 , G01N2291/044 , G01N2291/056 , G01N2291/104
摘要： PURPOSE:To enable the discrimination of flat defects roughly at the right angle to the bottom surface from other defects irrelevant to the thickness by providing two vibrators on the same probe so that a slant longitudinal wave and a slant hateral wave refractively enter a test piece at the same incident point. CONSTITUTION:A longitudinal wave vibrator 2 with the angle of refraction of 45 deg. and lateral wave vibrator 3 with the angle of refraction of 45 deg. are arranged in the same probe 1 so that the longitudinal ultrasonic beam 5 and the lateral ultrasonic wave 6 reflactively enter a steel material 4 at the same incident point 7. This enables the discrimination of vertical flat defects roughly at the right angle to the bottom surface of the steel material 4 from other defects irrelevant to the thickness.
摘要翻译：目的：通过在同一个探针上设置两个振动器，使平面缺陷与底部表面的大致垂直角度与其他与厚度无关的缺陷区分开来，使得倾斜的纵波和倾斜的侧波折射进入试片同一个事件点。构成：折射角为45度的纵波振子2。横波振子3的折射角为45度。布置在相同的探针1中，使得纵向超声波束5和横向超声波6在相同的入射点7处反射地进入钢材4。这使得能够将垂直平面缺陷与底面大致垂直地区分开的钢材4与其厚度无关的其他缺陷。

7. 发明专利

JPH07244021A EDDY CURRENT TESTING METHOD 失效
公开(公告)号：JPH07244021A
公开(公告)日：1995-09-19
申请号：JP3809194
申请日：1994-03-09
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KOGURE SUMIO , SUZUKI KAZUHIRO , SHIRAISHI MITSUAKI , YOSHIDA YOJI
IPC分类号： G01N27/90
摘要： PURPOSE:To suppress magnetic noise to a necessary level and to perform an eddy current test by using a material of a core in which the ratio of saturated magnetic flux densities of the magnetic core of electromagnet to a tube is equal to or larger than the ratio of sectional area of the tube to minimum sectional area of the core. CONSTITUTION:A magnetic flux PHIs necessary to magnetically saturate the object heat transfer tube 40 satisfys PHIs = (saturated magnetic flux density Bsc of a magnetic core 20) X (sectional are Sc of the core 20) >= (saturated magnetic flux density Bst of the material of the tube 40) X (sectional area St of the tube 40). In order to increase a value of (BscXSc), the area Sc is restricted, and the tube 40 having large St of the above formula, i,e., large sectional area can be applied by the use of the core material having large Bsc. A function for increasing the thickness of the tube 40 to be applied from t1 to t2 is obtained by the use of the core 20 having (the density Bst of the material of the density Bsc of the core 20) > (the density Bst of the material of the tube 40), and hence the test of the tube 40 which has not been able to be tested, can be executed.

8. 发明专利

JPH07218474A UNDERWATER EDDY CURRENT TESTER 失效
公开(公告)号：JPH07218474A
公开(公告)日：1995-08-18
申请号：JP1450994
申请日：1994-02-08
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KOGURE SUMIO , SUZUKI KAZUHIRO , YAMANAKA TSUNEYASU , YOSHIDA YOJI
IPC分类号： G01N27/90 , G21C17/06
摘要： PURPOSE:To enhance the workability and test accuracy at a time when the measurement of the thickness of the oxide film on the surface of a material to be tested such as a fuel rod and the detection of the surface damage of the material to be tested are performed in the water of a fuel pool by utilizing an eddy current. CONSTITUTION:A chasis 7, a pair of upper and lower frames 5, 6 fixing the chasis 7 to a fuel handle 25 and an operation head 100 moving along the fuel rod 26 of the fuel handle in an up-and-down vertical direction between the frames 5, 6 and also moved in the lateral direction crossing the up-and-down vertical direction at a right angle and a before-and-behind direction are provided and a test coil 10 and a standard coil 13 are attached to the operation head 100 and a sensitivity calibrating test piece 12 is provided in the vicinity of the operation head 100. An air sump is provided to the chasis 7 and feed screws 17, 20 moving the operation head 100 in the up-and-down vertical direction and the lateral direction are provided to the chasis 7 and two motors 16, 19 driven by the screws are arranged to the operation head 100 in a left-and-right symmetric state. A Manganin wire is used in the test coil 10 and guide rollers are provided above and under the test coil 10 to be held by a coil spring 11 and a slide rod.

9. 发明专利

JPH05107202A FLAW DETECTOR USING MAGNETIC PARTICLE 失效
公开(公告)号：JPH05107202A
公开(公告)日：1993-04-27
申请号：JP27068491
申请日：1991-10-18
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： YOSHIDA YOJI , KOGURE SUMIO , KOMAKI KAZUSHI
IPC分类号： G01N21/91 , G01N27/84
摘要： PURPOSE:To automate blow detection using magnetic particles by taking a structure wherein a hole is made in an iron core of a magnetizing apparatus and a TV camera for observation is embedded therein and by providing an ultraviolet-ray intercepting filter and a shutter in front of the camera. CONSTITUTION:A TV camera 200 is fitted in such a manner that it is embedded in a hole made in the central part of an iron core of a magnetizing apparatus 100, and the camera 200 is always directed to the center of a testing surface 502. An illuminating lamp 250 applies an ultraviolet ray so that fluorescent light be generated from fluorescent magnetic particle and makes the camera 200 detect a defect. However, Part of the ultraviolet ray reflected on the testing surface reaches the camera 200 directly and covers a screen, so that other images can not be seen. In order to prevent this disadvantage, an optical filter 231 which transmits the fluorescent light generated by the magnetic particle, but intercepts the ultraviolet ray, is provided in front of the camera 200 and thereby the harmful reflected ultraviolet ray is intercepted. Besides, a shutter 232 for preventing the stick on a lens of the camera 200 of a splash of an inspecting liquid scattered on the testing surface 502 is driven by an actuator 234 to be opened and closed.

10. 发明专利

JPH04204005A ULTRASONIC BORE MEASURING APPARATUS 失效
公开(公告)号：JPH04204005A
公开(公告)日：1992-07-24
申请号：JP32924190
申请日：1990-11-30
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KOGURE SUMIO , OGURI TADAKAZU , YOSHIDA YOJI
IPC分类号： G01B17/02
摘要： PURPOSE:To improve the accuracy of an ultrasonic size measuring apparatus and to make the apparatus compact by arranging two ultrasonic vibrators back to back, providing every two reflecting bodies within the respective ultrasonic beams, i.e., four reflecting bodies in total, and measuring the correlative position correctly. CONSTITUTION:A transceiver element 10 has two vibrators 11 to form ultrasonic beams 12. A reference reflecting body 12 is placed between a measuring surface 20 and the vibrator 11. Then, a calibration reflecting body 22 is arranged beforehand at the position of a correctly-measured distance C1. The distance M1 between the surface 20 and the body 21, and the distance C1 between the bodies 21 and 22 are measured. When the distance in water is to be measured by sound waves, although the sound velocity in water becomes different depending on the water temperature, the value of M1 can be corrected by the ratio of the distance C1 which has been correctly measured beforehand and the distance C1 measured by the apparatus. Similarly, the value of M2 is corrected. Moreover, if the distance S between the reflecting bodies 21 and 23 is correctly measured beforehand, the inside diameter D can be known correctly.

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