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1. 发明专利

JPS6053805A ULTRASONIC WAVE THICKNESS GAGE 失效
公开(公告)号：JPS6053805A
公开(公告)日：1985-03-27
申请号：JP16043383
申请日：1983-09-02
申请人： HITACHI LTD
发明人： TSUCHIYA KENJI , KADOWAKI TAKASHI , FUJIMOTO MINORU , ITOU SUSUMU
IPC分类号： G01B17/02
摘要： PURPOSE:To make it possible to measure thickness accurately, by adding a circuit, which automatically judges the ordinal number of an echo at a bottom surface immediately after a transmitted wave in the sequence of echoes. CONSTITUTION:The output of a pulsor 4 is converted into a sound wave by a transmitting and receiving device 2 and transmitted to a material to be checked 1. The sound wave reflected by the bottom surface of the material to be checked 1 is received by the transmitting and receiving device 2. The received signal is sent to time measuring ciruits 6 and 7 through an amplifier 5. A time tn from a point of the transmitted wave T to an echo Bn immediately after the T at the bottom surface is measured by the circuit 6. At the same time, a time tn+1 from the point of the transmitted wave T to the next echo Bn+1 at the bottom surface is measured by the circuit 7. By an operating circuit 8, n=tn/(tn+1-tn) is computed. A thickness Tx is computed by using Tx=vt1/(2n), where (v) is a sound speed in the material to be checked 1. Thus the thickness Tx is accurately measured.

2. 发明专利

JPS59183366A Flaw detecting and thickness measuring method 失效
标题翻译： FLAW检测和厚度测量方法
公开(公告)号：JPS59183366A
公开(公告)日：1984-10-18
申请号：JP5896483
申请日：1983-04-04
申请人： Hitachi Ltd
发明人： ITOU SUSUMU , SATOU KAZUYA , KADOWAKI TAKASHI , FUJIMOTO MINORU , TSUCHIYA KENJI
IPC分类号： G01N27/90 , G01B17/02 , G01N29/04 , G01N29/24
CPC分类号： G01N29/2412 , G01N2291/02854
摘要： PURPOSE:To enhance ultrasonic flaw detecting and thickness measuring sensitivity, by interposing a conductive medium between an electromagnetic ultrasonic probe and a material to be inspected. CONSTITUTION:When a conductive medium 11 such as an alumina powder is interposed between an electromagnetic ultrasonic probe and a material 1 to be inspected 1, equivalent impedance to the eddy current generated in the surface part of the material to be inspected becomes small by the internal flaw of the material 1 to be inspected or the ultrasonic wave reflected from the other surface thereof and the eddy current receiving sensitivity by the probe 7 is enhanced. As a result, electromagnetic ultrasonic flaw detection and thickness measuring sensitivity is enhanced.
摘要翻译：目的：通过在电磁超声波探头和待检查材料之间插入导电介质，增强超声波探伤和厚度测量灵敏度。构成：当在电磁超声波探头和待检查材料1之间插入诸如氧化铝粉末的导电介质11时，通过内部的待检查材料的表面部分中产生的涡流的等效阻抗变小要检查的材料1的缺陷或从其另一个表面反射的超声波和探针7的涡流接收灵敏度增强。结果，增强了电磁超声波探伤和厚度测量灵敏度。

3. 发明专利

JPS58182104A Magnetic marking device 失效
标题翻译：磁性标记装置
公开(公告)号：JPS58182104A
公开(公告)日：1983-10-25
申请号：JP6388882
申请日：1982-04-19
申请人： Hitachi Ltd
发明人： ITOU SUSUMU , ISHIKAWA HIROAKI , SATOU KATSUTOSHI , AOSHIMA MASARU
IPC分类号： G01D5/12 , B07C3/18 , B07C5/34 , G11B5/02
CPC分类号： B07C5/3412
摘要： PURPOSE:To rationalize production control over steel pipes by arraying plural unipolar magnets whose polarity is selected freely in desired order, and putting them close to a magnetic material to be marked and performing magnetic marking by magnetization. CONSTITUTION:Plural (5 in figure) unipolar magnets A-E each consisting of a yoke 6, magnetic pole 7, and exiting coil 8 are fixed to a nonmagnetic base 9 to constitute a magnetizing device. A steel pipe 1 is moved on plural guide rails (only 1 in figure) in contact with or at distance from the unipolar magnets 1 to magnetize the steel pipe 1 to N or S poles in desired order, thus recording necessary data by a binary signal. The guide rail 3 and magnetizing mechanisms 6-9 are at a sufficient interval (l). A magnetic marking output device 10 incorporating magnetic sensitive elements 11 is arranged closely to magnetic recording points (a)-(e) to read the magnetic recording signal in the form of binary codes. Thus, the control over a steel pipe manufacturing process is rationalized.
摘要翻译：目的：通过排列极性按所需顺序自由选择的多个单极磁体，并将其靠近要标记的磁性材料并通过磁化进行磁性标记，使钢管的生产控制合理化。构成：由磁轭6，磁极7和排出线圈8构成的多个（图中为5）的单极磁体A-E固定在非磁性基体9上，构成磁化装置。钢管1在与单极磁铁1接触或距离单极磁铁1的多个导轨（图中只有1个）上移动，以按期望的顺序磁化钢管1至N极或S极，从而通过二进制信号记录必要的数据。导轨3和磁化机构6-9处于足够的间隔（l）。结合有磁敏元件11的磁标记输出装置10紧密配置在磁记录点（a） - （e）上，以二进制码的形式读取磁记录信号。因此，对钢管制造过程的控制是合理的。

4. 发明专利

JPS58179305A Electromagnetic ultrasonic measuring device 失效
标题翻译：电磁超声波测量装置
公开(公告)号：JPS58179305A
公开(公告)日：1983-10-20
申请号：JP6112682
申请日：1982-04-14
申请人： Hitachi Ltd , Sumitomo Metal Ind Ltd
发明人： YAMAGUCHI HISAO , FUJISAWA KAZUO , KADOWAKI TAKASHI , ITOU SUSUMU , SASAKI SOUJI , SATOU KAZUYA
IPC分类号： G01B17/02 , G01N29/24
CPC分类号： G01N29/2412 , G01B17/02 , G01N2291/02854 , G01N2291/0421
摘要： PURPOSE:To improve the detection sensitivity, by making the multipoint measurement in a circumferential direction of a steel pipe possible in an electromagnetic ultrasonic measuring device which uses the ultrasonic wave of the longitudinal wave effective for measuring the thickness of the material to be inspected which is in a high temp. state. CONSTITUTION:A DC excitation coil 12 is wound so as to enclose a steel pipe 1 and a transmission and reception coil 11 is disposed in the position facing the pipe 1 in the central part of said coil 12. The greater part of the DC magnetic flux generated by a DC excitation coil 12 is the magnetic field By of the component parallel with the surface of the steel pipe 1 necessary for transmission and reception of the electromagnetic ultrasonic wave of the longitudinal wave, and if the quantity of excitation for the coil 12 is increased, the magnetic field By increases roughly proportionally. The disposition of plural transmission and reception coils so as to face the steel pipe is made possible by the above-mentioned constitution and the thickness over the entire circumference of the pipe is measured.
摘要翻译：目的：为了提高检测灵敏度，通过在使用有效的长波超声波的电磁式超声波测量装置中，可以在钢管的圆周方向上进行多点测量，以测量被检查材料的厚度，在高温州。构成：缠绕直流励磁线圈12以包围钢管1，并且在所述线圈12的中心部分的面向管1的位置设置发送和接收线圈11.直流磁通的大部分由直流励磁线圈12产生的是与纵波的电磁超声波的发送接收所需的钢管1的表面平行的分量的磁场By，线圈12的励磁量为增加，磁场增加大致成比例。通过上述结构可以实现多个发送和接收线圈与钢管相对的配置，并且测量管的整个圆周上的厚度。

5. 发明专利

JPS57203950A ELECTROMAGNETIC ULTRASONIC FLAW DETECTOR 失效
公开(公告)号：JPS57203950A
公开(公告)日：1982-12-14
申请号：JP8818981
申请日：1981-06-10
申请人： SUMITOMO METAL IND , HITACHI LTD
发明人： YAMAGUCHI HISAO , FUJISAWA KAZUO , KADOWAKI TAKASHI , ITOU SUSUMU , SASAKI SOUJI , SATOU ICHIYA
IPC分类号： G01N29/04 , G01N29/24
摘要： PURPOSE:To raise a detection signal level and thereby to improve the detection sensitivity by winding two DC exciting coils around a material to be detected in a surrounding manner and by arranging a transmission-reception coil in a space between the two DC exciting coils. CONSTITUTION:Two DC exciting coils 11 and 12 are wound independently around a material 1 to be detected in a surrounding manner. Then, excitation is made so that magnetic fluxes generated from the two DC exciting coils are joined, while a transmission-reception coil 13 is arranged opposite to the material 1 to be detected in a space between the coils 11 and 12. Most of the magnetic fluxes generated from the DC exciting coils 11 and 12 pass through the inside of the material 1 and the directions thereof are in parallel to the surface of the material 1 to be detected. Accordingly, the component of magnetic flux required for transmitting and receiving a longitudinal electromagnetic ultrasonic wave and being parallel to the surface of the material to be detected is made large and thus a detection signal level can be raised.

6. 发明专利

JPS5784351A Electromagnetic ultrasonic inspecter 失效
标题翻译：电磁超声波检测仪
公开(公告)号：JPS5784351A
公开(公告)日：1982-05-26
申请号：JP15951380
申请日：1980-11-14
申请人： Hitachi Ltd
发明人： TANAKA AKIHIRO , KADOWAKI TAKASHI , ITOU SUSUMU , FUJIMOTO MINORU , SATOU KATSUTOSHI
IPC分类号： G01N29/04 , G01N29/32
CPC分类号： G01N29/32 , G01N2291/044
摘要： PURPOSE:To achieve a correct inspection of material with a larger S/N regardless of the length of a cable by transmitting a detection signal of a probe to an inspection indicator after amplified. CONSTITUTION:A pole 5 from a probe 1 is fixed and a handle 6 is provided therein. A matching transformer 7 and an arithmetic amplifier 8 are housed in the handle 6. For example, the handle 6 is made of a non-heat conductive material, for to prevent the effect of heat generated in the probe 1. To shield extraneous noise, a shield material 9 is provided on the inner wall of the handle 6. As the detection signal of th probe 1 is amplified with an amplifier 8 and transmitted to an inspection display, the S/N can be increased even if the cable 3 is lengthened. Besides as the amplifier 8 is housed in the handle 6, inspection can be done more easily than it would be when it is provided in the course of the cable 3.
摘要翻译：目的：通过在放大后将探头的检测信号传输到检查指示器，无论电缆的长度如何，都能对具有较大S / N的材料进行正确检查。构成：来自探针1的杆5被固定并且在其中设置有手柄6。匹配变压器7和运算放大器8容纳在手柄6中。例如，手柄6由非导热材料制成，以防止在探针1中产生的热的影响。为了屏蔽外来噪声，屏蔽材料9设置在手柄6的内壁上。由于探头1的检测信号用放大器8放大并被传送到检查显示器，所以即使电缆3被延长，也可以增加S / N 。此外，当放大器8容纳在手柄6中时，可以比在电缆3的过程中设置时更容易地进行检查。

7. 发明专利

JPS5745445A Electromagnetic ultrasonic flaw detector 失效
标题翻译：电磁超声波检波器
公开(公告)号：JPS5745445A
公开(公告)日：1982-03-15
申请号：JP12108780
申请日：1980-09-03
申请人： Hitachi Ltd
发明人： SATOU ICHIYA , KUBOTA JIYUN , SASAKI SOUJI , ITOU SUSUMU , KADOWAKI TAKASHI
IPC分类号： G01N29/04 , G01N29/24
CPC分类号： G01N29/2412 , G01N2291/02854
摘要： PURPOSE:To measure a minute defect and a defect near surface without being influenced by the change in measuring condition by providing respectively two pieces of radio transmission coils and radio reception coils in juxtaposition. CONSTITUTION:When a material 2 to be inspected is put into the DC magnetic field by an electromagnet 1, and a pulse current is applied by a pulser 5 to radio transmission coils 3s, 3m, a ultrasonic wave is generated in the material 2, propagates in the material 2 and is received by radio reception coils 4s, 4m. The outputs of the coils 4s, 4m are inputted via differential amplifier 6d, and a waveform shaping circuit 9d to a divider 10, whilist the output of the coil 4s for comparison is inputted via an amplifier 6s and a waveform shaping circuit 9s to a divider 10. The output divided from the differential output signal by a comparing output signal is monitored by a motor 7. Then, the output does not change despite the change in measuring conditions such as of magnetic flux density and gaps, and the sizes of defects are inspected with good accuracy.
摘要翻译：目的：通过分别提供并联的两条无线电发射线圈和无线电接收线圈，来测量测量条件变化所影响的微小缺陷和表面附近的缺陷。构成：当通过电磁体1将待检查的材料2放入直流磁场中时，脉冲发生器5向无线发送线圈3s，3m施加脉冲电流时，在材料2中产生超声波，在材料2中并由无线电接收线圈4s，4m接收。通过差分放大器6d输入线圈4s，4m的输出，通过放大器6s和波形整形电路9s将分频器10的输出端与振荡器4的输出对应的波形整形电路9d输入到分频器通过比较输出信号与差分输出信号分开的输出由电动机7监测。然后，尽管诸如磁通密度和间隙等测量条件发生变化，但是输出也不改变，并且缺陷的尺寸是检查准确性好。

8. 发明专利

JPS5631637A INSTRUMENT UNIT OF ELECTROMAGNETIC ULTRASONIC WAVE 失效
公开(公告)号：JPS5631637A
公开(公告)日：1981-03-31
申请号：JP10719079
申请日：1979-08-24
申请人： NIPPON STEEL CORP , HITACHI LTD
发明人： SATOU ICHIYA , MIYAGAWA KAZUO , SASAKI YUKINDO , KAWAMURA SHIYOUJI , SATOU SHIYUUICHI , SASAKI SOUJI , KUBOTA JIYUN , ITOU SUSUMU
IPC分类号： G01N29/04 , G01N29/24 , G10K15/04
摘要： PURPOSE:To remove the effect of mode conversion wave, by constituting respective transmission and reception coils with a plurality of coils, coupling the coils differentially and using the differential amplifier in case of reception. CONSTITUTION:The two transmission coils 51, 52 are connected in additional connection. On the other hand, the two reception coils 61, 62 are connected differentially and the connection point of both the coils is connected to the differential amplifier 11 as the grounding point. If a failure 10 is just above the reception coil 62 of the sample 1, the failure waves F1, F2 due to failure 10 are appeared in the reception coil 62. Thus, each of the 1st and 2nd transmission waves P1, P2 and mode conversion waves M1, M2 shows the waveform lowered in the amplitude due to the failure 10. Accordingly, four waveforms of P1', F1', F2', and P2' are output to the differential amplifier 11. Thus, through the use of differential system, the effect of the mode conversion waves M1, M2 can be rejected.

9. 发明专利

JPS55106931A LOW NOISE LOADER FOR STEEL PIPE 失效
公开(公告)号：JPS55106931A
公开(公告)日：1980-08-16
申请号：JP1425879
申请日：1979-02-13
申请人： HITACHI LTD
发明人： SATOU KATSUTOSHI , ITOU SUSUMU , KANETANI TADASHI
IPC分类号： B65G57/18
摘要： PURPOSE:To convey a steel pipe with a low noise by a system wherein the steel pipe is conveyed as appling a brake by a running skid rail under the condition where the conveying skid rail and the surface of the running skid rail are constantly maintaining a flat condition. CONSTITUTION:A certain number of steel pipes 3 are supplied on the conveying skid rail 31 by a kicker 4. The steel pipe 3 is rolling as braking by repeating positive excitation and reversed excitation of an excitation coil 32. Further, the steel pipe 3 is rolling as applying a brake with the excitation coil 34 on the running skid rail 33 which is flat with the conveying skid rail 31 to convey into a cradle 30. As the running skid rail 33 is moved forward and backward and the cradle is lowered sequently, a certatin number of steel pipes 3 are supplied from the kicker 4 to pile the steel pipe 3 on the cradle 30 without noise.

10. 发明专利

JPS5449766A APPARATUS FOR PREVENTING NOISE FROM STEEL PIPES IN TRANSIT 失效
公开(公告)号：JPS5449766A
公开(公告)日：1979-04-19
申请号：JP11553577
申请日：1977-09-28
申请人： NIPPON STEEL CORP , HITACHI LTD
发明人： IZUMIDATE AKIO , KAJIWARA TOSHIHIKO , ITOU SUSUMU , KANETANI TADASHI , SATOU KATSUTOSHI , OZAKA AKIRA , ICHIISHI TSUNEO
IPC分类号： B65G43/00
摘要： PURPOSE:To reduce noise generated from clashing of pipes with each other by means of a magnetic circuit so arranged through a pair of skid rails as to cover a part of pipes in transit. CONSTITUTION:Inclinded skid rails 21 and 21' adapted to support the weight of a pipe and serve as a magnetic rail for transmitting magnetic force to the pipe is fixed to an iron core 24 with a clamp 26 and a bolt 27. The core 24 is fixed to a yoke on a frame base with a bolt 25. The core is wound with an exciting coil 23. With excitation of the exciting coil 23, the skid rail 21 is turned to the north pole and skid rail 21' to the south pole. In this manner, a magnetic loop 1p is formed in the pipe 7 through the yoke 22, the magnetic iron core 24 and the magnetic rail 21. When the exciting coil 23 is arranged at a pitch 1M, as the pipe moves, the magnetic flux density shows a sin curve as indicated by a curve P. Accordingly, the pipe 7 moves without halting with the continuous motion thereof representing a vibration braking force curve as shown by a curve P'.

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