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31. 发明专利

JPH01306092A SHEATH AT OUTGOING END OF OPTICAL FIBER FOR LASER BEAM MACHINING 失效
公开(公告)号：JPH01306092A
公开(公告)日：1989-12-11
申请号：JP13644988
申请日：1988-06-02
申请人： MITSUBISHI HEAVY IND LTD
发明人： NAGURA YASUMI , SAKAMOTO MICHITO , ISHIDE TAKASHI , NAGASHIMA TADASHI
IPC分类号： B23K26/064
摘要： PURPOSE:To reflect reflected beam from a working surface and to prevent an outgoing end part of optical fiber from breaking by coating the sheath surface opposite to a work piece at the outgoing end part of optical fiber with material having a high reflectance to laser beam. CONSTITUTION:The whole surface of copper sheath 8 at an outgoing part of optical fiber 4 is coated by gilding, silvering or deposition, etc., to reflect the reflected beam again and to prevent the optical fiber 4 from breaking. A ring of material easy to transmit or disperse the laser beam such as silica glass, sapphire, is laid at the neighborhood of the outgoing end part of optical fiber to reduce energy density by transmission or dispersion of reflected beams high in energy density and to prevent the fiber 4 from breaking. Further, when the above two methods are used at the same time, the failure-proof function at the outgoing end of the optical fiber can be improved.

32. 发明专利

JPS6427789A METHOD FOR WELDING PIPE INTERIOR BY LASER BEAM 失效
公开(公告)号：JPS6427789A
公开(公告)日：1989-01-30
申请号：JP18196087
申请日：1987-07-21
申请人： MITSUBISHI HEAVY IND LTD
发明人： KIDERA TAKUYA , NAGURA YASUMI , SAKAMOTO MICHITO , ISHIDE TAKASHI , URUSHIBATA SHOICHI , SATO MASATOSHI , NAGASHIMA TADASHI
IPC分类号： B23K26/21 , B23K26/064 , B23K26/142 , B23K26/28
摘要： PURPOSE:To improve the repairing quality and to reduce the repairing time by providing a notch on a symmetrical part of a condensing optical system to form a gas path and arranging a gas nozzle in the vicinity of a laser beam projection hole and providing a cooling fin on the rear of a reflection mirror. CONSTITUTION:A fiber projection part 19, a tip optical system 12 and the condensing optical system 14 are arranged to the inside of a repairing sleeve 10. At this time, the gas path 17 for a gas curtain is provided on a rotary cylinder 13 to form the gas curtain on the laser projection hole 16. By this method, spatters, etc., from a weld zone 11 are prevented from penetrating into the rotary cylinder 13. A part of gas of the path 17 cools each lens of the optical systems 12 and 14 by the flow of the gas and the reflection mirror 15 is cooled by the fin 20. Accordingly, at the time of the repairing work of a heat-transfer pipe 4, the functional deterioration of the optical systems is prevented and the weld quality is improved. Namely, the repairing quality is improved and the repairing time is also reduced.

33. 发明专利

JPS6293094A LASER WELDING EQUIPMENT FOR FINE TUBE 失效
公开(公告)号：JPS6293094A
公开(公告)日：1987-04-28
申请号：JP23308385
申请日：1985-10-18
申请人： MITSUBISHI HEAVY IND LTD
发明人： KUDO MASAHARU , SHIRASU ISAO , NAGURA YASUMI , ISHIDE TAKASHI , SAKAMOTO MICHITO
IPC分类号： B23K26/21
摘要： PURPOSE:To weld the necessary place only concentrically and to reduce the welding time by inserting the optical fiber which leads a laser beam and a conical concave mirror into a fine tube with their combination. CONSTITUTION:A heat transfer tube 1 and sleeve 5 are closely fitted by expanding the sleeve 5 with its inserting into the inner face close to the defective part 4 of the fine tube like the heat transfer tube 1, etc. A concave mirror 11 is then held on the inner face of the sleeve 5 by a stabilizer 12 by inserting the conical concave mirror 11. When a laser beam generator 16 is turned on in this state, the laser beam is irradiated on all the periphery of the inner face of the sleeve 5 after the laser beam passing through an optical fiber 14 and being reflected by the concave mirror 11. Consequently, the heat transfer tube 1 and sleeve 5 are instantaneously welded.

34. 发明专利

JPS6138780A Magnetic stirring and welding device 失效
标题翻译：磁力搅拌和焊接设备
公开(公告)号：JPS6138780A
公开(公告)日：1986-02-24
申请号：JP16092184
申请日：1984-07-31
申请人： Mitsubishi Heavy Ind Ltd
发明人： TSUJI KURETAKA , TODA OSAMU , BEPPU SEIJI , TADA YOSHIHIRO , NAGURA YASUMI , IMADA TAKEHIKO , NISHIKAWA YOSHIHISA , FUKUNAGA YOSHIAKI , MASAKI TSUTOMU
IPC分类号： B23K9/08
CPC分类号： B23K9/08
摘要： PURPOSE:To improve the quality of a welding joint by providing an electromagnetic coil opposed to a welding torch by placing a groove between them, and also providing a hollow iron core for jetting a back shield gas, on the center of its coil. CONSTITUTION:An electromagnetic coil 19 opposed to a welding torch 18 is placed by placing a welding groove 13 between them. A hollow iron core 22 passing through the center part of the electromagnetic coil 19 is provided, and from its tip, a back shield gas such as argon, etc. is jetted to the rear side of the groove 13. Also, from many holes of the iron core 22, a shield gas is blown to the electromagnetic coil 19. By this mechanism, a molten pool is stirred by a large electromagnetic force, and also the electromagnetic coil 19 is cooled. Moreover, since the back shield gas covers the rear side of the groove 13, the quality of a welding joint is improved.
摘要翻译：目的：为了提高焊接质量，通过在它们之间放置一个槽，提供与焊炬对置的电磁线圈，并且在其线圈的中心还提供用于喷射背面保护气体的中空铁芯。构成：通过在它们之间放置焊接槽13来放置与焊炬18相对的电磁线圈19。设置穿过电磁线圈19的中心部分的中空铁芯22，并且从其尖端将诸如氩等的背面保护气体喷射到槽13的后侧。另外，从多个孔铁芯22将屏蔽气体吹送到电磁线圈19.通过该机构，通过大的电磁力搅拌熔池，并且电磁线圈19也被冷却。此外，由于后挡板气体覆盖槽13的后侧，所以提高了焊接接头的质量。

35. 发明专利

JPS60130476A GAS SHIELDED ARC WELDING METHOD 失效
公开(公告)号：JPS60130476A
公开(公告)日：1985-07-11
申请号：JP23842983
申请日：1983-12-17
申请人： MITSUBISHI HEAVY IND LTD
发明人： NAGURA YASUMI , NAYAMA RISUKE , ISHIDE TAKASHI , FURUYASU HIROSHI
IPC分类号： B23K9/16
摘要： PURPOSE:To prevent lack of fusion in the base or end part of a groove and to accomplish satisfactory welding by preheating uniformly the part just before the gas shielded arc weld bead part by a consumable electrode with a TIG torch of a rotating eccentric tungsten electrode. CONSTITUTION:The arc 7 just before the bead part 4 of gas shielded arc welding by a consumable electrode 3 is preheated uniformly by a TIG torch 5 using a rotating eccentric tungsten electrode 6. The molten electrode arrives at the base and end part of the groove of the bead part 4 and is satisfactorily deposited thereon, by which the satisfactory welding is accomplished.

36. 发明专利

JPS6016313B2 失效
公开(公告)号：JPS6016313B2
公开(公告)日：1985-04-24
申请号：JP13167078
申请日：1978-10-27
申请人： MITSUBISHI HEAVY IND LTD
发明人： OOMICHI TAKEO , NAGURA YASUMI , KUSHIMOTO SHOJI , IGARASHI TAENJI
IPC分类号： B23K9/10 , B23K9/12

37. 发明专利

JPS5913317B2 JPS5913317B2 - 失效
公开(公告)号：JPS5913317B2
公开(公告)日：1984-03-28
申请号：JP3198378
申请日：1978-03-20
申请人： Mitsubishi Heavy Ind Ltd
发明人： NAGURA YASUMI , KUSHIMOTO SHOJI
IPC分类号： B23K9/028 , B23K9/127 , B23K37/00

38. 发明专利

JPS5933072A Magnetically driven arc welding method 失效
标题翻译：磁力驱动电弧焊接方法
公开(公告)号：JPS5933072A
公开(公告)日：1984-02-22
申请号：JP14245482
申请日：1982-08-17
申请人： Mitsubishi Heavy Ind Ltd
发明人： NAGURA YASUMI , MURASE KAZUNORI , IKEDA TAKAO
IPC分类号： B23K9/08
CPC分类号： B23K9/08
摘要： PURPOSE:To make the starting of an arc smooth and make the traveling of the arc safe and to make weld metal sound, by improving the compsn. and ejecting direction of a shielding gas, the construction and material quality of an electrode and welding sequence. CONSTITUTION:Gaseous argon contg. oxygen is used for a shielding gas and the direction of the shielding gas is directed toward the traveling direction of an arc. Tungsten or thorium-contg. tungsten having high resistance to corrosion is coated on the arc generating region of an electrode to make the electrode exchangeable. Further the welding current is set at 3 levels in accordance with an arc starting stage, heating stage and melting stage. The excitation current is set at 2 levels in accordance with the arc starting stage and heating and melting stage.
摘要翻译：目的：通过改进电机，使电弧起弧顺利，使电弧的行驶安全，并使焊接金属发出声音。和喷射保护气体的方向，电极的结构和材料质量以及焊接顺序。构成：气态氩气氧被用作保护气体，并且保护气体的方向指向电弧的行进方向。钨或钍具有高耐腐蚀性的钨被涂覆在电极的电弧产生区上，以使电极可交换。另外根据电弧启动阶段，加热阶段和熔化阶段，将焊接电流设定在3个等级。励磁电流根据电弧启动阶段和加热熔化阶段设定在2级。

39. 发明专利

JPS5764490A Circumfeential automatic tig welding device 失效
标题翻译：圆弧焊自动焊接设备
公开(公告)号：JPS5764490A
公开(公告)日：1982-04-19
申请号：JP13872080
申请日：1980-10-06
申请人： Mitsubishi Heavy Ind Ltd
发明人： SAKAMOTO MICHITO , NISHIKAWA YOSHIHISA , NAGURA YASUMI , NAKAMURA AKIO , INOUE SHIYOUGO
IPC分类号： B23K9/29 , B23K9/028
摘要： PURPOSE: To make butt welding in a narrow place possible by mounting two split rotatable electricity conducting rings on their inner side of two split bodies enclosing the circumferential surface of pipes, using transparent materials for the annular parts of the bodies opposite to the swiveling locus of an electrode holding these, and providing two split adapter rings contacting tightly the circumferential surface of the pipes on both sides of the bodies.
CONSTITUTION: Two split electricity conducting rings 14a, b are provided rotatably on the inner side of two split bodies 3 enclosing the circumference of pipes 1, and an electrode 16 is held by one ring 14a thereof. Transparent materials 18a, b of quartz glass or the like are used for the annular parts of the bodies 3 opposite to the locus of the electrode 16 swiveled by the rotation of the ring 14a, and further two split adapter rings 10a, b contacting tightly the cylindrical circumferential surfaces of the bodies 3 are provided. Here, electricity is supplied to the electrode 16 to generate an arc, by which the butt parts of the pipes 1 are welded under monitoring through the materials 18a, b.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：通过在两个分开的主体的内侧上安装两个分开的可旋转的导电环，在狭窄的地方进行对接焊接，该导体环围绕管的周向表面，使用透明材料用于与旋转轨迹相对的主体的环形部分保持这些的电极，并且提供两个分开的接合环，紧密接合体两侧的管的圆周表面。构成：两个分流导电环14a，b可旋转地设置在包围管1的周边的两个分体3的内侧，电极16由其一个环14a保持。透镜材料18a，b的石英玻璃等用于与通过环14a的旋转而旋转的电极16的轨迹相对的主体3的环形部分，以及另外两个分开的适配环10a，b紧密接触设置主体3的圆柱形周向表面。这里，向电极16供给电力，以产生电弧，通过材料18a，b监测管1的对接部分被焊接。

40. 发明专利

JP2004154838A Pit repairing method, pit, lining panel, and underwater welding equipment 审中-公开
标题翻译：修补方法，坑，衬板和水下焊接设备
公开(公告)号：JP2004154838A
公开(公告)日：2004-06-03
申请号：JP2002324172
申请日：2002-11-07
申请人： Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社
发明人： DOGE YUKIO , FUJITANI YASUYUKI , UEDA TAKASHI , KAMEI HIROMASA , NAGURA YASUMI
IPC分类号： B23K9/00 , B23K9/04 , B23K101/12
摘要： PROBLEM TO BE SOLVED: To provide a pit repairing method etc. by which a pit is effectively repaired.
SOLUTION: Repair is performed by installing a lining panel 3 in a manner covering an existing lining material 2 with the use of underwater welding equipment and thereby providing the entire surface of existing pits 1 with an awning. In this case, the lining panel 3 is formed of a material which is superior to the existing lining material 2 in chlorine corrosion resistance. Further, a lining panel can also be used which is integrated with a filler section by overlay-welding filler metal on the outer periphery of the lining panel 3.
COPYRIGHT: (C)2004,JPO

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