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11. 发明专利

JP2007196267A Welding method 审中-公开
标题翻译：焊接方法
公开(公告)号：JP2007196267A
公开(公告)日：2007-08-09
申请号：JP2006018470
申请日：2006-01-27
申请人： Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社
发明人： NARITA RYUICHI , HASHIMOTO YOSHIO , IKEDA TAKAO , FUJITANI YASUYUKI , KAMO KAZUHIKO , ONDA MASAHIKO
IPC分类号： B23K9/173 , B23K9/16 , B23K9/167 , B23K37/08
摘要： PROBLEM TO BE SOLVED: To consistently perform the MIG welding by using gaseous argon with less mixed gas such as gaseous oxygen.
SOLUTION: Welding cleaning is performed in a predetermined area by performing the arc discharge on a surface of a base material. Then, the MIG welding is performed on the predetermined area with argon being a shield gas. Any other component than argon is not positively added to the shield gas.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：通过使用具有较少混合气体如气态氧的气态氩来一致地执行MIG焊接。解决方案：通过在基材的表面上进行电弧放电，在预定区域中进行焊接清洁。然后，在氩气为保护气体的情况下，在预定区域进行MIG焊接。除了氩气以外的任何其他成分都不积极地添加到保护气体中。版权所有（C）2007，JPO＆INPIT

12. 发明专利

JP2001191197A MATERIAL FOR MIG WELDING 失效
公开(公告)号：JP2001191197A
公开(公告)日：2001-07-17
申请号：JP37574999
申请日：1999-12-28
申请人： MITSUBISHI HEAVY IND LTD
发明人： TSUKIMOTO KOJI , KAWAGUCHI SEIICHI , TOYODA MASAHIKO , IKEDA TAKAO
IPC分类号： B23K9/173 , B23K35/30 , C22C38/00 , C22C38/46 , C22C38/52 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide the material for MIG welding capable of applying a MIG welding method to the welding of high Cr steel by securing the stability of an arc. SOLUTION: This material contains, by weight, 0.03 to 0.13% C, 0.1 to 0.4% Si, 0.8 to 1.7% Mn, 8 to 11% Cr, 0.8 to 1.2% Mo, 0.3 to 1% Ni, 0.02 to 0.3% V, 0.005 to 0.05% N and 0.008% O. In addition to the above, rare earth elements inclusive of Ce is contained by 0.015 to 0.09% in total, prefreably, by 0.015 to 0.06%, more preferably, by 0.019 to 0.052%, and the balance Fe with inevitable impurities. Moreover, Co may be contained in the ratio of 1 to 3%, Ta may be contained in the ratio of 0.05 to 0.3%, and Nb may be contained in the ratio of 0.01 to 0.2%.

13. 发明专利

JP2001150178A METHOD AND DEVICE FOR REDUCING RESIDUAL WELDING STRESS 失效
公开(公告)号：JP2001150178A
公开(公告)日：2001-06-05
申请号：JP33675099
申请日：1999-11-26
申请人： MITSUBISHI HEAVY IND LTD
发明人： MATSUBAYASHI KAZUKI , IKEDA TAKAO , KUSHIMOTO SHOJI , TOYODA MASAHIKO , NAGURA YASUMI
IPC分类号： B23K31/00 , B23K9/00 , B23K101/04 , C21D9/08 , C21D9/50 , G21D1/00
摘要： PROBLEM TO BE SOLVED: To heat the whole periphery of piping uniformly and quickly with a simple device composition to reduce residual stress in the vicinity of the weld zone of a hollow body such as piping, etc. SOLUTION: When reducing residual tensile stress on the inside surface side of the hollow body, a ring-shaped arc generating ring is arranged on the outer peripheral side of the hollow body, a pair of ring coils for forming magnetic fields are arranged so that the ring is interposed between the coils, and the outer peripheral side of an annular weld zone is uniformly and quickly heated while an arc rotates at high speed in the circumferential direction. When reducing the residual tensile stress on the outside surface side of the hollow body, a disk-shaped arc generation plate is arranged on the inner peripheral side of the hollow body, a pair of ring coils for forming magnetic fields are arranged so that the generation plate is interposed between the coils, and the inner peripheral side of an annular weld zone is uniformly and quickly heated while the arc rotates at high speed in the circumferential direction.

14. 发明专利

JPH07108376A SUBMERGED ARC WELDING METHOD 失效
公开(公告)号：JPH07108376A
公开(公告)日：1995-04-25
申请号：JP28007893
申请日：1993-10-13
申请人： MITSUBISHI HEAVY IND LTD
发明人： NAGURA YASUMI , IKEDA TAKAO , FUJITANI YASUYUKI , DANBAYASHI KATSUJI
IPC分类号： G01B11/28 , B23K9/095 , B23K9/18
摘要： PURPOSE:To improve the quality of a welded joint by adjusting the quantity of dispersion automatically to obtain the proper height of dispersion of flux. CONSTITUTION:In adjusting automatically the quantity of dispersion of flux 7 in submerged arc welding, a generating state of molten slag is picked up on an image by a CCD camera 11, etc., and a boundary between molten slag 10 and flux 7 is discriminated based on the difference of luminance on a screen picture-processed. An area Sn of each molten slag is measured to obtain a total value S thereof, when S is smaller than S* with an evaluation threshold as S*, the quantity of dispersion of flux 7 is reduced, when S is almost equal to S*, the quantity of dispersion as it is continued and when S is larger than S*, the quantity of dispersion is increased.

15. 发明专利

JPH06122074A NARROW GAP ARC-WELDING METHOD 失效
公开(公告)号：JPH06122074A
公开(公告)日：1994-05-06
申请号：JP29925692
申请日：1992-10-12
申请人： MITSUBISHI HEAVY IND LTD
发明人： NAGURA YASUMI , KOIWA MASAMI , IKEDA TAKAO , FUJITANI YASUYUKI , OGUCHI TSUTOMU
IPC分类号： B23K9/022 , B23K9/173 , B23K9/29 , B23K9/30
摘要： PURPOSE:To provide a narrow gap arc-welding method by which satisfactory penetration on the side wall of a narrow gap and a high-quality welded part can be obtained and welding improved insensibility of an access sensor and excellent in controllability can be executed. CONSTITUTION:In the narrow gap arc-welding that a nozzle 3 is inserted into the narrow gap 2 of a base material and welding is executed by a wire 6 supplied through a nozzle 3 as sealeding gas is supplied, the wire 6 is deviated from the central axis of the nozzle 3 and supplied, the nozzle itself is rotated in one direction, the tip of the nozzle 3 is revolved round the vertical axis 11 in the reverse direction at the same speed as that of the nozzle itself and welding is executed while the arc generated from the wire 6 executes an elliptical motion or a laterally reciprocating motion.

16. 发明专利

JPH05111771A METHOD FOR PREVENTING DECREASE OF WELDED JOINT EFFICIENCY 失效
公开(公告)号：JPH05111771A
公开(公告)日：1993-05-07
申请号：JP8328691
申请日：1991-03-22
申请人： MITSUBISHI HEAVY IND LTD
发明人： MURASE KAZUNORI , IKEDA TAKAO , TANAKA KENICHI , AOKI SHIGEYUKI
IPC分类号： B23K9/23 , B23K31/00 , B23K103/04
摘要： PURPOSE:To reduce a softened area and to improve strength by forcedly cooling a weld zone of maraging steel by an upper cooling jig and a lower cooling jig cooled by low temperature compressed air. CONSTITUTION:The upper cooling jig 4 having void space is mounted on the surface in the vicinity of the weld zone of the single barrel 1 of the maraging steel and the lower cooling dig 5 having void space inside which also serves as back shield is set up on the rear thereof. The compressed air is then introduced into a cooler 7 from a compressed air inlet 6, the cooled air whose temperature is dropped to several tens degrees below zero by adiabatic expansion is fed to the void spaces of the upper cooling jigs 4 and the lower cooling dig 5 to cool these jig 4 and 5 and then, discharged from a compressed air outlet 8. When the single barrel 1 subjected to restraint cooling is TIG-welded to form weld metal 2, welding heat is quickly taken away by the cooled jigs 4 and 5, the cooling time of a heat-affected zone is shortened and as a result, the softened area and hardness reduction are reduced. Consequently, joint efficiency is improved and the weld zone excellent in reducing weight is obtained.

17. 发明专利

JPH03155470A WELDING TARGET POSITIONING DEVICE 失效
公开(公告)号：JPH03155470A
公开(公告)日：1991-07-03
申请号：JP29345289
申请日：1989-11-10
申请人： MITSUBISHI HEAVY IND LTD
发明人： FUJITA KEN , KAWAGUCHI SEIICHI , IKEDA TAKAO , OGUCHI TSUTOMU , KAMO KAZUHIKO
IPC分类号： B23K9/127 , B23K9/00
摘要： PURPOSE:To form a proper welding bead by positioning a welding target with a stylus sensor and a non-contact sensor when plural nipple are welded automatically by a welding robot to a tube gathering main tube. CONSTITUTION:When plural nipples 2 are welded automatically by the welding robot 8 vertically on the outer circumferential surface of the horizontal tube gathering main tube 1, a welding target is measured by a stylus sensor 10 set at the neighborhood of a welding torch 9 before welding. Further, the deviation of the target position by thermal deformation generated during welding is corrected by z-axis and y-axis laser sensors 17, 18 provided on a sensor base 12 of a robot truck 7. In this way, a good and proper weld bead can be obtained, accordingly, repair manhour after welding can be reduced, the quality of a welded joint can be improved and the cost can be reduced.

18. 发明专利

JPH0289577A METHOD FOR REPAIR WELDING OF DEFECTIVE PIPING 失效
公开(公告)号：JPH0289577A
公开(公告)日：1990-03-29
申请号：JP23889688
申请日：1988-09-26
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAWAI YUKIHIRO , IMADA TAKEHIKO , IKEDA TAKAO , FUKUNAGA YOSHIAKI
IPC分类号： B23K31/00 , B23K9/29
摘要： PURPOSE:To execute repair welding by generating an arc, while suppressing bleeding of an internal fluid by using a hollow electrode for a W electrode held by a TIG welding torch, feeding a welding wire from an inner cavity of the hollow electrode, and simultaneously allowing shielding gas to flow. CONSTITUTION:At the time of repairing a piping in which a fluid is contained, a hollow W electrode 9 and a welding wire 10 protruded from its tip are allowed to confront a defective part 13, and an arc 15 is generated between both of them. Subsequently, a temperature of water or vapor 14 in a piping 12 rises and the water or vapor is going to bleed out through the defective part, but shielding gas is allowed to flow intermittently from an inner cavity of the hollow W electrode 9, and the water or vapor is pushed in the direction as indicated with an arrow into the piping 12. The arc 15 and a molten pool which is formed are stabilized the welding wire 10 is supplied automatically thereto and a sound weld bead 16 is formed. In such a way, while suppressing bleeding an internal fluid from the defective part of the piping, sound repair welding can be performed.

19. 发明专利

JPS61208000A ADSORPTION PANEL FOR LOW TEMPERATURE 失效
公开(公告)号：JPS61208000A
公开(公告)日：1986-09-16
申请号：JP4851885
申请日：1985-03-12
申请人： MITSUBISHI HEAVY IND LTD
发明人： HAMANAKA SUKEAKI , SHIGE TAKASHI , IKEDA TAKAO , KURIBAYASHI SHIZUMA
IPC分类号： G21F9/02 , B01D53/04 , G21F9/00

20. 发明专利

JP2003129211A MONITORING METHOD FOR SOUNDNESS OF THERMAL SPRAY 审中-公开
公开(公告)号：JP2003129211A
公开(公告)日：2003-05-08
申请号：JP2001326714
申请日：2001-10-24
申请人： MITSUBISHI HEAVY IND LTD
发明人： KANIKAWA MASAYA , IKEDA TAKAO , MEGA MASAHIKO , IZUTSU DAISUKE , NARITA ATSUSHI
IPC分类号： C23C4/12
摘要： PROBLEM TO BE SOLVED: To provide a monitoring method for soundness of thermal spray whereby, in forming a thermal spray film, the stability of a plasma flame (or a high- speed gas flame), the soundness of a torch, and the supply of a thermal spray powder can be accurately known. SOLUTION: In a method for monitoring the soundness of thermal spray in forming the thermal spray film by thermally spraying the thermal spray powder with a plasma flame or a high-speed gas flame, only the plasma flame or the high-speed gas flame is jetted to the front surface of a platy specimen and the temperature distribution of the back surface of the specimen is measured.

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