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41. 发明专利

JPS60110152A SEMICONDUCTOR DEVICE 失效
公开(公告)号：JPS60110152A
公开(公告)日：1985-06-15
申请号：JP21775583
申请日：1983-11-21
申请人： HITACHI LTD , HITACHI MICROCUMPUTER ENG
发明人： WATABE TOMOYUKI , WASHIO KATSUYOSHI , HAYASHI MAKOTO , OKABE TAKAHIRO
IPC分类号： H01L21/8226 , H01L27/02 , H01L27/082
摘要： PURPOSE:To improve the current gain of a semiconductor device by forming an n type layer on a region at least except the portion directly under a collector of an integrated junction logic element I L element, thereby reducing the injector returning current and a collar passage current. CONSTITUTION:An npn type transistor 1,000 and an I L element 2,000 are integrated on an IC chip, the separating region of the transistor is formed of a groove 41 and a p type layer 5, and the collar of the I L is formed of a groove 42. An n type layer 100 is formed at the downside of an injector 62 between the injector 62 and a base 53 in the vicinity of the downside of the collar 42. Impurity density is set to a value larger than an n type layer layer 3 and smaller than the layers 62, 63 and an n type layer 73. Thus, since the layer 100 is not provided directly under the collector 73, the width of the base of the I L element (an interval between the layers 73 and 3) does not vary even if the impurity density of the layer 100 becomes irregular, thereby obtaining uniform characteristics.

42. 发明专利

JPS6070121A MANUFACTURE OF AUSTENITIC STAINLESS STEEL 失效
公开(公告)号：JPS6070121A
公开(公告)日：1985-04-20
申请号：JP17802383
申请日：1983-09-28
申请人： HITACHI LTD
发明人： HAYASHI MAKOTO , ENOMOTO KUNIO
IPC分类号： C21D7/00 , C21D7/02
摘要： PURPOSE:To increase the fatigue strength of austenitic stainless steel by repeatedly applying prescribed stress to the steel to work-harden the steel. CONSTITUTION:Stress just below fatigue limit is repeatedly applied for prescribed times to austenitic stainless steel. The stress is increased by a prescribed value, and it is repeatedly applied prescribed times. This operation is repeated several times. The austenitic stainless steel is repeatedly work-hardened. Thus, the fatigue strength is increased.

43. 发明专利

JPS6021521A SEMICONDUCTOR DEVICE 失效
公开(公告)号：JPS6021521A
公开(公告)日：1985-02-02
申请号：JP12771583
申请日：1983-07-15
申请人： HITACHI LTD , HITACHI MICROCUMPUTER ENG
发明人： WASHIO KATSUYOSHI , HAYASHI MAKOTO , WATABE TOMOYUKI , OKABE TAKAHIRO
IPC分类号： H01L21/28
摘要： PURPOSE:To certainly form a contact hole at the position on the desired diffusion layer and obtain an ultra miniature elements by forming a diffusion layer through difference in the thickness of oxide films and by forming a contact hole on the diffusion layer through the self-aligning method utilizing difference in thickness of oxide film. CONSTITUTION:An oxide film 2 is formed on a substrate 1, an oxide film is removed from the area where a diffusion layer is to be formed, a thin oxide film 2' is formed by thermal oxidation in view of making difference in the thickness of oxide films in such area where the diffusion layer is formed or not formed, and diffusion impurity implanted. Next, a contact hole 5 is opened after forming diffusion layer 4 and an electrode 6 is formed. In this constitution, the electrode comes to contact with the area other than the diffusion layer even when a contact hole is formed in the area other than the diffusion layer due to displacement of mask of contact. Namely, the contact hole can always be formed on the diffusion layer and the diffusion layer and contact hole have the self-alignment structure which does not require a margin for alignment.

44. 发明专利

JPS58174892A SHELL TYPE LATTICE PLATE OF LIGHT WATER COOLED REACTOR 失效
公开(公告)号：JPS58174892A
公开(公告)日：1983-10-13
申请号：JP5656582
申请日：1982-04-07
申请人： HITACHI LTD
发明人： HIGUCHI SHIGEO , SHIMIZU TASUKU , TAKEUCHI MAMORU , ENOMOTO KUNIO , HASEGAWA KUNIO , MASUMOTO TSUTOMU , SAKATA SHINJI , HAYASHI MAKOTO , SATOU YOSHIMI , KOIKE AKIMASA , SUZUKI SHIZUO , KUROSAWA ATSUSHI
IPC分类号： G21C5/06 , G21C1/08

45. 发明专利

JPS5841341A DETECTION OF CRACK 失效
公开(公告)号：JPS5841341A
公开(公告)日：1983-03-10
申请号：JP13849181
申请日：1981-09-04
申请人： HITACHI LTD
发明人： HAYASHI MAKOTO , SAKATA SHINJI
IPC分类号： G01N27/20
摘要： PURPOSE:To detect the location of a crack and its length with high precision and easiness by providing a wiring of many lead wires at the periphery of a member where crack is liable to occur and measuring the potential differences in the lead wires and judging by comparing those differences. CONSTITUTION:In order to measure a potential V0 that becomes a reference two measurement terminals 4 are provided with a distance l between them at a part where a crack is not likely to occur, and many measurement terminals 5 are provided with a distance l among them at a part where the crack is liable to occur. A DC current is made to flow in an entire construction member 1 from a DC current source 3 through current supply terminals 2. When a crack 13 is formed in the member 1, a potential difference V that is measured by a minute current voltmeter 14 becomes larger than the potential difference V0. The potential difference V is affected by the measurement terminal distance l and the current supply terinal distance l0, but if l0 becomes large, the effect disapeears. The accuracy of measurement of the length of a crack a/W becomes hiher as the ratio of the potential difference V/V0 becomes larger. Because many wires are required as V/V0 becomes large, the l is made 1-2 times the width W of a plate.

46. 发明专利

JPS57166541A METHOD AND DEVICE ESTIMATING LIFE OF FLUID RECEPTACLE AT HIGH TEMPERATURE 失效
公开(公告)号：JPS57166541A
公开(公告)日：1982-10-14
申请号：JP5181781
申请日：1981-04-08
申请人： HITACHI LTD
发明人： SAKATA SHINJI , HAYASHI MAKOTO , SHIMIZU TASUKU , IKEUCHI KAZUO
IPC分类号： G01M99/00 , G01N3/32 , G07C3/00
摘要： PURPOSE:To estimate a remaining life in comparison with an allowable value, by measuring the temp. and pressure of high temp. fluid and the temp. at evaluation point of a receptacle, and calculating the amount of damage generated at said point. CONSTITUTION:Each steam temp. which is measured by a detector 13 and the metalic temp. measured by a thermocouple 14 are inputted to a thermal stress operator 19, and the temp. difference at the inside and outside surfaces of a casing and the temp. distributing are decided. A thermal stress is inputted to an internal pressure stress operator 18 which is detected by a pressure detector 12 calculating the thermal stress to input to an adder 20 together with the output from the operator 19. The output from the adder 20 is compared with the reference value 22 of an operation allowable stress by a comparator 21 and is brought to an alarm display device 24 through a deciding device 23 and on the other hand, in the routes which pass two analyzers 25, 28 the degrees that fine cracks existing potentially in the casing grow due to fatigue, creep and corrosion etc. are calculated breaking-dynamically, and diagnoses are performed.

47. 发明专利

JPS57142539A DETECTING METHOD FOR RELAXATION OF STEAM TURBINE CASING BOLT 失效
公开(公告)号：JPS57142539A
公开(公告)日：1982-09-03
申请号：JP2704381
申请日：1981-02-27
申请人： HITACHI LTD
发明人： HAYASHI MAKOTO , SAKATA SHINJI
IPC分类号： G01M99/00 , F01D21/00 , F01D25/28 , G01L1/25
摘要： PURPOSE:To determine a stress from a change in acoustic velocity of a ultrasonic wave propagating in a bolt and decides the degree of relaxation of the bolt from the stress. CONSTITUTION:A ultrasonic transmitting and receiving element 5 is attached to one end of a steam turbine casing bolt 4, and a trigger signal generated by a single pulse generator 1 is inputted to the element 5. The element 5 receives an echo signal from the bolt bottom, and the echo signal, amplified by an amplifier 6, is caused to pass through a low-pass filter 7 and a high-press filter 8 to remove noise. It is returned as a trigger signal to a pulser 3 via an echo shaping circuit 9, while is sent as a ultrasonic pulse to the element 5 again, and said operations are repeated. The period of the pulse oscillation is accumulated by a universal counter 12 for measurement. A period T both under a no-load condition and a load condition is stored in a comparison circuit 13, and is compared with the period T available after used for a long perid of time to determine a tightening force.

48. 发明专利

JPS56117144A MEASUREMENT OF FATIGUE DAMAGE 失效
公开(公告)号：JPS56117144A
公开(公告)日：1981-09-14
申请号：JP1917480
申请日：1980-02-20
申请人： HITACHI LTD
发明人： SHIMIZU TASUKU , HAYASHI MAKOTO
IPC分类号： G01N3/32 , G01N3/06
摘要： PURPOSE:To estimate the degree of stress of damage of a construction nondestructively by attaching a chip with one or plural slits or cracks to the construction and measuring the change of electric resistance during its operation. CONSTITUTION:Chip 1 with slit 2 is attahced to a construction such as heavy electric and atomic powered machine and appartus by means of selamic injection and electric resistance is measured seccessively or intermittently by using input terminal 5 and output terminal 6. Thus, the fatigue or creep damage of a construction at real working can be measured nondistructively and directly from the construction by using the characteristics that the electric resistance value of a chip with cracks changes together with the development of the cracks, making it possible to increase the reliability of machines.

49. 发明专利

JPS56111438A WHITEEXXRAYS STRESS MEASURING DEVICE 失效
公开(公告)号：JPS56111438A
公开(公告)日：1981-09-03
申请号：JP1362680
申请日：1980-02-08
申请人： HITACHI LTD
发明人： HAYASHI MAKOTO , NEMOTO SADAO
IPC分类号： G01L1/00 , G01L1/25
摘要： PURPOSE:To improve the stress measurement efficiency and measurement precision of a stress measuring device by constituting amplification and processing sytem in one system by using a couple of detectors formed from the same single crystal and having the same characteristics. CONSTITUTION:White X-rays radiated from white-X-rays source 2 strike sample 3 and are diffracted by sample 3. Those diffracted X-rays are detected by semiconductor detectors 4 and 5 made of the same single crystal. Their detection signals, after amplified by preamplifiers 6 and 7, are inputted to main amplifier 9 via the 1st multiplexer 8. The amplified signal is inputted to multichannel analyzer 11 for an energy analysis via the 2nd multiplexer synchronized with the 1st multiplexer 8. Analysis values of it are stored in memories 12 and 13 respectively and the stored values, when showing sufficient energy, are outputted to and analyzed by computer 14 to obtain the stress value of the sample. Thus, the efficiency and precision of the measurement can be improved.

50. 发明专利

JPS5583841A X RAY STRESS MEASURING UNIT USING GAMMA RAY EXCITATION X RAY SOURCE 失效
公开(公告)号：JPS5583841A
公开(公告)日：1980-06-24
申请号：JP15644978
申请日：1978-12-20
申请人： HITACHI LTD
发明人： HAYASHI MAKOTO , FUKUDA YOSHIO , NEMOTO SADAO
IPC分类号： G01N23/20 , G01L1/00 , G01N23/205
摘要： PURPOSE:To make measurement of the inside face of a small-diameter tube by irradiating gamma rays to a target to generate X rays and detecting diffraction X rays from the irradiation point and changing the incident angle of X rays in a nuclear plant, etc. CONSTITUTION:Small-size X ray generator 11 where film cassette 4 is fitted to the upper face is inserted into the tube of measured tube 10, and gamma rays are generated from radioisotope 12 and become incident X ray 6 through pinhole 14 and are irradiated to point O. Diffraction X ray 7 diffracted at point O exposes film 15, which is mounted on cassette 4, and records the X ray diffraction image at point O. Then, generator 11 and cassette 4 are fixed to camera holding jig 21, and the right end of holding jig 21 is connected to arm 22, and the lower end of arm 22 is turned around rotation center axis 8, and axis 8 is so arranged that axis 8 may pass through point O in the inside face. Consequently, the incident angle of the characteristic X ray can be changed.

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