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31. 发明专利

JPS62217156A ULTRASONIC FLAW DETECTING DEVICE 失效
公开(公告)号：JPS62217156A
公开(公告)日：1987-09-24
申请号：JP5916786
申请日：1986-03-19
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KANO KATSUYOSHI , KOGURE SUMIO
IPC分类号： G01N29/04 , G01N29/28
摘要： PURPOSE:To suppress the generation of noises at the time of ultrasonic claw detection by supplying liquid which is deaired by a deairing means from a nozzle to the gap between an ultrasonic flaw detector and the surface of a test body and placing the liquid itself in a state where the causes of air bubble formation are lessened. CONSTITUTION:A deairing tank 10 is evacuated by a vacuum pump 24 to produce a vacuum therein and water is sucked up from a recovery tank 23 through a line 4 and then deaired because the vapor phase part of the deairing tank 10 is placed under a vacuum. When the water level in the deairing tank 10 rises to the set value of a liquid level gauge 13, a three-way solenoid valve 19 operates to link a line 7 with the atmosphere, and the water is guided to a supply tank 20 through a line 8. When the water level in the deairing tank 10 drops below the set value of the liquid level gauge 12, the three-way solenoid valve 19 links the lines 7 and 9 with each other and said operation is repeated to suck, deair, and feed the water to the supply tank 20. The water is supplied from the supply tank 20 to an ultrasonic flaw detector holding device 26 through a line 1.

32. 发明专利

JPS62134509A AUTOMATIC SOUND-SPEED CORRECTING TYPE SUPERSONIC DIMENSION MEASURING GATE 失效
公开(公告)号：JPS62134509A
公开(公告)日：1987-06-17
申请号：JP27459785
申请日：1985-12-06
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KOGURE SUMIO , SUZUKI KAZUHIRO
IPC分类号： G01B17/00 , G01B17/06
摘要： PURPOSE:To accomplish temperature correction of a measured distance to a specimen by multiplying a ratio of actual distance from a stylus and a wire and a measuring distance by a supersonic wave by a measured distance from the stylus to the specimen by the supersonic wave. CONSTITUTION:A supersonic wave stylus 10 is arranged corresponding to each measuring point of a specimen, such as a channel box 1, mounting a temperature correcting wire 11 between each stylus and measuring surface and the whole assembly is immersed in the water 12. The water temperature has generally been changed to t' deg.C, a different temperature from the initial temperature condition t deg.C an apparent distance of the wire 11 measured by the No.1 pulse meter 15 assumes a distance of L'W and the corresponding voltage VW is obtained by the No.1 distance voltage generator 16. A reflected wave from the channel box 1 is measured for the distance LS' by the No.2 pulse meter 17 and the corresponding voltage VS is obtained by the No.2 distance voltage generator 18. An arithmetic operation of a correcting coefficient VW/VW' is made from the initial voltage VW stored in a memory 14 through a correcting coefficient calculator 19. A product of the distance voltage VS' and correcting coefficient VW/VW' is obtained for the correction thereof.

33. 发明专利

JPS61167860A AUTOMATIC ULTRASONIC FLAW DETECTING METHOD 失效
公开(公告)号：JPS61167860A
公开(公告)日：1986-07-29
申请号：JP670485
申请日：1985-01-19
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KOGURE SUMIO , TAYAMA KENJI , ISAKA KATSUMI , HANAWA HARUYUKI
IPC分类号： G01N29/26 , G01N29/04 , G01N29/265
摘要： PURPOSE:To detect a defect part in detail without taking a long time for flaw detection by performing flaw detection normally at large subscanning pitch and decreasing the subscanning pitch for a part where a defect is detected. CONSTITUTION:An ultrasonic probe 16 is scanning automatically on the surface of an object body 12 in two dimensions. In this flaw detecting means, when a defect 14 is detected for the 1st time while the probe 16 is scanned along a scanning course 15, the probe 16 is returned to the subscanning position which is one-pitch before and scanning is made again while the subscanning pitch is decreased from the position. When the defect 14 is not detected any more, scanning is made at the original subscanning pitch. Consequently, the scanning is made as shown by a scanning course 18, the time required for the flaw detection is shortened, and the flaw detection is performed in detail for the defect part.

34. 发明专利

JPS60174947A ULTRASONIC SECTOR SCANNER 失效
公开(公告)号：JPS60174947A
公开(公告)日：1985-09-09
申请号：JP3029684
申请日：1984-02-22
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KOGURE SUMIO , KURODA IWAO , YOSHIDA YOUJI
IPC分类号： G01N29/26
摘要： PURPOSE:To achieve a samller size, higher speed and lower cost by making a beam reflect on a conical surface, which is turned with the center axis thereof made eccentric in a sector scanning in which an ultrasonic beam is made incident into material and varied continuously in the angle of refraction. CONSTITUTION:An ultrasonic beam 21 from an ultrasonic vibrating plate 20 is made propagate through a medium (e.g. water and oil) 50 and reflect on the reflecting surface 10 thereof so as to penetrate into an object 30 to be inspected. The reflecting surface 10 shall be the conical surface of a cone 11 and is turned by making the axis 12 thereof 10 and a rotating shaft 40 of the cone 11 eccentric by an angle beta. As a result, the beam 21 is reflected on the reflecting surface 10 in the range as shown by the drawings A-B and done continuously in the range 24 as shown by the drawing C. This enables the formation of a support 22 of the vibrating plate 20 and the cone 11 in a smaller size while allowing a simple rotary motion only in one direction thereby achieving a higher speed of scanning and a lower cost along with a smaller size of a sector scanner.

35. 发明专利

JPS60128358A WIDE BAND FOCUS TYPE PROBE 失效
公开(公告)号：JPS60128358A
公开(公告)日：1985-07-09
申请号：JP23631383
申请日：1983-12-16
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KOGURE SUMIO , SUZUKI KAZUHIRO
IPC分类号： G01N29/24 , G01N29/22
摘要： PURPOSE:To shorten a dead zone, to obtain high resolution, and to improve the defect detection precision of a water dipping flaw detecting method by using a metallic material which is fast in acoustic velocity and reducing the thickness of the lens. CONSTITUTION:An oscillator 1 oscillates acoustically with electric pulses from a plug 2, but its free oscillations are suppressed by the backing material 3 on the back surface and the steel-made acoustic lens 4 to transmit an ultrasonic wave narrow pulse width. In this case, the backing material 3 uses resin with which heavy metal powder of tungsten, etc., is mixed to suppress the free oscillation effectively, and the thickness of the center part of the steel-made a coustic lens 4 is a quarter as large as the wavelength of the ultrasonic wave so as to suppress the free oscillations effectively. Consequently, noise echoes due to the multiple reflection of the ultrasonic wave by the lens are reduced to shorten the dead zone, obtaining a high-resolution probe having narrow pulse width.

36. 发明专利

JPS6086460A ULTRASONIC PROBE HAVING TWO AXES 失效
公开(公告)号：JPS6086460A
公开(公告)日：1985-05-16
申请号：JP19412483
申请日：1983-10-19
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KOGURE SUMIO , HANAWA HARUYUKI
IPC分类号： G01N29/24
摘要： PURPOSE:To execute flaw detection of two axis directions only by one flaw detecting scanning by fitting transmission/reception vibrators in two different axis directions. CONSTITUTION:An axial direction flaw detecting vibrator 1 for flaw detection of pipe welding part is adhered to a probe shoe 2 having a surface inclined by 37.4 deg. from a normal direction so that the refractive angle in a steel is 70 deg.. Peripheral direction flaw detecting vibrators 3, 4 are arranged by setting up theta0 so that an angle theta3 made with the normal direction of the surface in the pipe is 45 deg. to maximize the reflection of a defect having a surface in a pipe axis direction. Since the vibrators 3, 4 are inclined, ultrasonic beams 5, 6 turned to the peripheral direction are not interfered with a welding excess metal, so that the defect having an axial direction surface can be detected.

37. 发明专利

JPS58180946A Focussing type ultrasonic probe 失效
标题翻译：聚焦型超声探头
公开(公告)号：JPS58180946A
公开(公告)日：1983-10-22
申请号：JP6230182
申请日：1982-04-16
申请人： Hitachi Eng Co Ltd , Hitachi Ltd
发明人： KOGURE SUMIO , WAKAMATSU MIKIO
IPC分类号： G01N29/24 , G01N29/22
CPC分类号： G01N29/221
摘要： PURPOSE:To obtain a focal point with an optional depth by exchanging only a shoe, by a method wherein an acoustic lens space is provided to the shoe by processing the same and focussed ultrasonic waves are obtained by utilizing the difference in acoustic velocities of the material quality of a substance filling said space and the material quality of the shoe. CONSTITUTION:Incident ultrasonic waves applied to a shoe 3 provided with a recessed part 2 having radius of curvature of R from a vibrator 1 bring lens effect by a medium 4 having acoustic velocity different from that of the shoe 3 filling the recessed part 2 to be converged. In this case, the shoe 3 is brought into close contact with an object 5 to be tested through the medium so as to obtain converged ultrasonic waves at a focal point 6 by the difference in acoustic velocities of the shoe 3 and the object 5 to be tested. By this constitution, because a focal point with an optional depth can be set by exchanging only the shoe with respect to one vibrator, a probe with various focus depths can be supplied inexpensively.
摘要翻译：目的：通过仅通过更换鞋来获得具有可选深度的焦点，通过其中通过处理相同的声学透镜空间被提供给鞋，并且通过利用材料的声速差来获得聚焦超声波的方法填充所述空间的物质的质量和鞋的材料质量。构成：施加到具有来自振动器1的具有R的曲率半径的凹部2的靴3的入射超声波通过具有与填充凹部2的靴3不同的声速的介质4带来透镜效果，使其成为收敛在这种情况下，鞋3通过介质与要测试的物体5紧密接触，以便通过鞋3和物体5的声速差来在焦点6处获得会聚的超声波，测试。通过这种结构，由于可以通过相对于一个振动器仅更换鞋来设定具有可选深度的焦点，因此可以廉价地提供具有各种聚焦深度的探针。

38. 发明专利

JPH11248690A ULTRASONIC FLAW DETECTOR 失效
公开(公告)号：JPH11248690A
公开(公告)日：1999-09-17
申请号：JP5470798
申请日：1998-03-06
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KOGURE SUMIO , HIGUCHI SHINICHI , YOSHIDA YOJI
IPC分类号： G01N29/04 , G01N29/11 , G01N29/22 , G01N29/44 , G01N29/10
摘要： PROBLEM TO BE SOLVED: To ensure highly precise measurement of a defect at its end with an ultrasonic flaw detection. SOLUTION: A probe structure 3 with an electronic scanning function, which is mounted on a scanning mechanism 8 and set on a material to be inspected, comprises a transmitting probe 4 having an electronic phase control focusing type variable angle scanning function and a receiving probe 6 of fixed angle arranged in front thereof for receiving the end echo of a defect. In such automatic crack detection scanning, the coordinate of the scanning mechanism 8 for detecting the end echo with the maximum sensitivity is found, where the ultrasonic focusing distance of the transmitting probe 4 is automatically adjusted nearly to the end of a defect with a ultrasonic flaw detection controller 15 to record data for the end echo of the defect in a data recording computation control 16 with variable angle electronic scanning. Then, a number of linear intersections connecting transmitting ultrasonic incident points in variable angle scanning to a maximum value detection point of the end echo are found as defect ends for defect sizing.

39. 发明专利

JPH10318998A ULTRASONIC FLAW DETECTOR USING SHEAR HORIZONTAL WAVE 失效
公开(公告)号：JPH10318998A
公开(公告)日：1998-12-04
申请号：JP12526897
申请日：1997-05-15
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KOGURE SUMIO , YOSHIDA YOJI
IPC分类号： G01N29/28
摘要： PROBLEM TO BE SOLVED: To provide a highly reliable apparatus which stabilizes an ultrasonic, wave transmission efficiency to an axle using a shear horizontal wave (SH). SOLUTION: A proper balance is gained by independent pressure adjusting valves 18 and 19 on a pressure piston cylinder 7 to press a probe generating an ultrasonic wave as shear wave onto the surface of an axle and a cylinder 12 for injecting a contact medium 26 under pressure. A constant contact film is formed in a fine gap (d) with the surface of the axle to stabilize an ultrasonic wave transmission efficiency. This also allows the use of the SH wave with a reduced slide resistance during scanning.

40. 发明专利

JPH10239287A TURBINE ROTOR BLADE BUILT-IN PART SUPERSONIC FLAW-DETECTING DEVICE 失效
公开(公告)号：JPH10239287A
公开(公告)日：1998-09-11
申请号：JP4242597
申请日：1997-02-26
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KOGURE SUMIO , SATO KAZUO , YOSHIDA YOJI , CHIBA HIROAKI
IPC分类号： G01N29/04 , G01N29/10
摘要： PROBLEM TO BE SOLVED: To accurately detect a defective part without being restricted by the shape of a blade built-in part. SOLUTION: Supersonic waves from a probe 7 for detecting flaw are applied from the base part side surface side of a blade leg part 33a toward a boundary position 12 where a blade built-in parts are adjacent one another, are reflected by the end face of an adjacent saddle type part 32 and are directed toward a protrusion 32b for detecting the presence of a defective part 10. As compared with a conventional technique for applying ultrasonic waves from the base part side of the saddle type part 32a in a turbine rotor 30, reflecting the supersonic waves by the tip of the saddle type part 32a, and hence detecting a defective part, ultrasonic waves can be positively applied to the protrusion 32b without being affected by the geometrical shape and dimensions of the wheel base part side and the blade built-in part and hence the defective part 10 can be detected accurately.

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