专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPS61255773A ELECTRON BEAM WELDING METHOD BY ELECTRON BEAM SHAPE CONTROL 失效
公开(公告)号：JPS61255773A
公开(公告)日：1986-11-13
申请号：JP9801085
申请日：1985-05-10
申请人： NAT RES INST METALS
发明人： IRIE HIROSADA , TSUKAMOTO SUSUMU
IPC分类号： B23K15/00 , B23K15/02
摘要： PURPOSE:To control the defect of a spike, etc. by forcibly deforming to the ellipse that its major axial direction intersects at right angles each other at the vicinity of the surface of the body to be welded and the vicinity of the penetration root part the shape of the electron beam on the electron beam axis and vertical plane. CONSTITUTION:The electron beam shape control device 3 composed of the plural magnetic poles or electrodes having >=two poles under the convergent lens 2 is set up to control the shape on the electron beam axis and vertical cross section. The welding is performed by adjusting the major axis in the elliptical shape of the electron beam so as to become in the weld line direction as the 5b close to the surface of the body to be welded and in the right angles direction with the weld line as 8b close to the penetration root part. In this case, the molten metal is smoothly flowed out of the inside of the electron beam hole 11, the local hollow of a solidified wall 10 is dissolved and the porosity and solidification crack are prevented due to the electron beam hole 11 being enlarged in the weld line direction by the electron beam 5b close to the surface of the body to be welded. In the vicinity of the root part the control in the spike and cold shut can be performed in partial penetration welding by the electron beam 8b.

2. 发明专利

JPH0973997A LASER HEATED PLASMA 失效
公开(公告)号：JPH0973997A
公开(公告)日：1997-03-18
申请号：JP22680495
申请日：1995-09-04
申请人： NAT RES INST METALS
发明人： TSUKAMOTO SUSUMU , ASAI GIICHI , HIRAOKA KAZUO , IRIE HIROSADA
IPC分类号： H05H1/24 , H05H1/22 , H05H1/32
摘要： PROBLEM TO BE SOLVED: To prevent electrode constitution material from entering the gas flow space, change in the plasma state and the skin effect by forming a laser heated plasma independent from the plasma in gas flow space. SOLUTION: Laser heated plasma 6 is formed stably and independently above discharge electrodes 8 when flow quantity of plasma generation gas and laser output are controlled. The plasma is sustained even after discharge between electrodes 8 is stopped and so plasma 7 between the electrodes is reduced, as long as laser 2 is irradiated. The generated, a laser heated plasma 6 moves along with a conversion laser 2, and moves in the flow of plasma generation gas 5 coaxial with it, e.g. moving in horizontal or vertical direction. And thus, it is used as a stable laser heated plasma at a suitable position for such as material composition or material working.

3. 发明专利

JPS6293812A MANUFACTURE OF SUPERCONDUCTING COMPOUND WITH ELECTRON BEAM IRRADIATION 失效
公开(公告)号：JPS6293812A
公开(公告)日：1987-04-30
申请号：JP23346885
申请日：1985-10-21
申请人： NAT RES INST METALS
发明人： TACHIKAWA KYOJI , KUMAKURA HIROAKI , TOGANO KAZUMASA , IRIE HIROSADA , TSUKAMOTO SUSUMU
IPC分类号： B22F3/24 , B22F3/26 , C22C1/04 , H01B12/10 , H01B13/00 , H01L39/06

4. 发明专利

JPS55100885A ELECTRON BEAM WELDING METHOD 失效
公开(公告)号：JPS55100885A
公开(公告)日：1980-08-01
申请号：JP819679
申请日：1979-01-29
申请人： NAT RES INST METALS
发明人： HASHIMOTO TATSUYA , INAGAKI MICHIO , IRIE HIROSADA , TSUKAMOTO SUSUMU
IPC分类号： H01J37/315 , B23K15/00 , B23K15/02
摘要： PURPOSE:To prevent defects such as spike and improve penetration beads by continuously vibrating an electron beam at high frequencies and weakening the piercing action by the electron beam. CONSTITUTION:When an electron beam 1 from an electron gun is throttled by a converging lens 2 and is radiated to the welding works 10, the welding works melts and the molten part becomes of high temperature, releasing a large amount of electrons. When these electrons are captured by a detecting electrode 4, a voltage is generate across a resistance 5 by the current flowing in the circuit. From this voltage signal 6A, a feedback signal 6B is made by a band-pass filter 6. The signal 6B is applied to a comparator 7 and is applied to a deflecting lens 3 via transmitter 8 and amplifier 9. As a result of this, the AC voltage is loaded intermittently like waveform 9B to the deflecting lens 3 when the electron beam 1 approaches to the penetration end, by which the electron beam 1 is vibrated, resulting in substantially decreased power density of the electron beam.

5. 发明专利

JPS5516771A ELECTRON BEAM WELDING 失效
公开(公告)号：JPS5516771A
公开(公告)日：1980-02-05
申请号：JP8998378
申请日：1978-07-25
申请人： NAT RES INST METALS
发明人： HASHIMOTO TATSUYA , INAGAKI MICHIO , IRIE HIROSADA , TSUKAMOTO SUSUMU
IPC分类号： B23K15/02 , B23K15/00
摘要： PURPOSE:To prevent defects such as a spike likely to occur at the front end of bead, by detecting the ripple of high-voltage welding power to detect the displacement of the focus of an electron beam and performing feedback control. CONSTITUTION:The focus of the electron beam 1 performs vertical oscillation due to the ripple of the high-voltage power 8. A voltage drop measured by a low resistance 10 is passed through a band-pass filter to detect the displacement of the focus. A feedback signal is processed through a trigger signal generator 21, a delay circuit 22 and a function generator 23 to produce appropriate pulses 23B. The DC component 13B of the current of the electron beam is applied to a grid voltage control circuit 24 to produce an output voltage 24 to control the DC component at a set level. The pulse voltage 23B and the DC voltage 24B produced by the circuits 23, 24 are added to each other to generate a signal 25. When the signal 25 is applied to a voltage raising circuit, a bias voltage is caused between a filament 2 and a grid 3 to control the level of the current of the electron beam.

6. 发明专利

JPS6229017A MANUFACTURE OF SUPERCONDUCTOR COMPOUND BY ELECTRON BEAM IRRADIATION 失效
公开(公告)号：JPS6229017A
公开(公告)日：1987-02-07
申请号：JP16678685
申请日：1985-07-30
申请人： NAT RES INST METALS
发明人： TOGANO KAZUMASA , KUMAKURA HIROAKI , IRIE HIROSADA , TSUKAMOTO SUSUMU , TACHIKAWA KYOJI
IPC分类号： C23C16/48 , H01B12/04 , H01B13/00

7. 发明专利

JPS61255774A ELECTRON BEAM WELDING METHOD 失效
公开(公告)号：JPS61255774A
公开(公告)日：1986-11-13
申请号：JP9801185
申请日：1985-05-10
申请人： NAT RES INST METALS
发明人： IRIE HIROSADA , TSUKAMOTO SUSUMU
IPC分类号： B23K15/02 , B23K15/00
摘要： PURPOSE:To prevent the various defects of an undercut, vertical crack, etc. and to increase the efficiency in welding work by performing the welding with the use of the electron beam forcibly deformed in the ellipse having the major axis in welding direction or in the similar shape therewith. CONSTITUTION:The magnetic field to form the electron beam is produced by the four magnetic poles 3a-3d excited by four exciting coils 3a'-3d'. The opposing magnetic poles 3a and 3c, 3b and 3d are respectively of the same pole, having the same magnetic potential. In case of the magnetic pole 3a and 3c being taken as N pole and the magnetic pole 3b and 3d as S pole, the force to diverge in the axial X direction and to converge in the axial Y direction acts on the electron beam 1 inside the electron beam shape control device 3. With setting to the proper value the current passed to a convergent lens 2 and the current passed to each exciting coils 3a'-3d' of the electron beam shape control device 3, the electron beam 1a-1c becomes in the elliptical shape having the major axis in the weld line direction always inside the electron beam hole 6.

8. 发明专利

JPS55100886A ELECTRON BEAM WELDING METHOD 失效
公开(公告)号：JPS55100886A
公开(公告)日：1980-08-01
申请号：JP819779
申请日：1979-01-29
申请人： NAT RES INST METALS
发明人： HASHIMOTO TATSUYA , INAGAKI MICHIO , IRIE HIROSADA , TSUKAMOTO SUSUMU
IPC分类号： H01J37/315 , B23K15/00 , B23K15/02
摘要： PURPOSE:To substantially weaken power density and prevent defects such as spike by measuring ripples, detecting the vertical vibrations of an electron beam focus, feeding back the same and deflecting and vibrating the electron beam at high frequencies. CONSTITUTION:The electron beam 2 created by a high voltage power source 5 and electron gun 1 is throttled by a converging lens 3 and hits against the welding works 9, thereby melting these. The focus of the electron beam 2 is vertically vibrated with time by the ripples contained in a high voltage power source 5. The voltage 7B across the low resistance 7 is applied to a band-pass filter 10 to separate the main ripple components 10B. The output 10B is applied to a comparator 11 and the output 12B of the transmitter 12 is applied to a power amplifier 8. Then if an electron beam deflecting lens 4 is excited and the electron beam is deflected, the electron beam vibrates when the focus of the electron beam approaches to the penetration end, resulting in substantially decreased power density of the electron beam.

9. 发明专利

JPS5516770A ELECTRON BEAM WELDING 失效
公开(公告)号：JPS5516770A
公开(公告)日：1980-02-05
申请号：JP8998278
申请日：1978-07-25
申请人： NAT RES INST METALS
发明人： HASHIMOTO TATSUYA , INAGAKI MICHIO , IRIE HIROSADA , TSUKAMOTO SUSUMU
IPC分类号： B23K15/02 , B23K15/00
摘要： PURPOSE:To prevent defects such as a spike likely to occur at the front end of bead, by catching electrons emitted from molten metal to detect the displacement of the focus of an electron beam and performing feedback control. CONSTITUTION:Since the electrons emitted from the molten part of a welded piece 6 reach a detection electrode 3, the focus of the electron beam is detected. A feedback signal 5B is triggered through a trigger signal generator 21, a delay circuit 22 and a function generator 23 so that appropriate pulses 23B of duration not longer than the half period of the feedback signal 5B are produced. A DC component 17B is detected by a low voltage filter 17 from the voltage drop of high-voltage power 11 due to a resistor 19 and is applied to a grid voltage control circuit 24 to produce an output voltage 24B for a set level. The pulse voltage 23B and the control voltage 24B generated by the circuits 23, 24 are added to each other to produce a voltage 25. When the voltage 25 is applied to a grid voltage raising circuit 15, a bias voltage 25 is applied to a grid voltage raising circuit 15, a bias voltage is caused between a filament 12 and a grid 14 to control the level of the current of the electron beam.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式