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1. 发明专利

JPH05248553A 失效
公开(公告)号：JPH05248553A
公开(公告)日：1993-09-24
申请号：JP4482492
申请日：1992-03-02
申请人： TOKYO GAS CO LTD , NIPPON KOKAN KK , JAPAN STEEL & TUBE CONSTR
发明人： YOSHIDA KENTARO , FUJIMAKI TERUAKI , AKAO KAZUTAKA , TSURUMAKI TOMIO , KITO TOMIYUKI , NEMOTO MINORU , KAWAI TOSHIAKI , UNEMOTO YASUO
IPC分类号： F16K27/00 , F16L41/02 , F16L55/00
摘要： PURPOSE:To reduce a pressure loss with a valve using a fitting for hot tap. CONSTITUTION:A valve 1 built into a fitting having a branch pipe connecting section has a sealing plug 4 sealed and fixed to a neck section fitting 3, and a center shaft 7 penetrating the plug 4 in sealed state with a lower end supported on a lower fitting 16. This valve 1 is so made that the center shaft 7 is fitted with a plurality of jacks 62 in such a way as vertically movable and causing the advance and retreat of a stopper 64 for sealing the cutout end of a piping, and a plurality of control rods 12 penetrating the plug 4 in sealed state for operating and positioning the jacks 62.

2. 发明专利

JPS6050150A STEEL HAVING EXCELLENT COLD TOUGHNESS IN PART INFLUENCED BY WELDING HEAT 失效
公开(公告)号：JPS6050150A
公开(公告)日：1985-03-19
申请号：JP15502883
申请日：1983-08-26
申请人： NIPPON KOKAN KK
发明人： TAIRA TADAAKI , UME KAZUYOSHI , AKAO KAZUTAKA , HIYOUDOU TOMOAKI , KITADA TOYOFUMI , NIIKURA MASAKAZU
IPC分类号： C22C38/00 , C22C38/14 , C22C38/54 , C22C38/58
摘要： PURPOSE:To prevent the deterioration of toughness especially in the part influenced by welding heat, and to provide the steel having excellent cold toughness by allowing the steel to contain C, Si, Mn, Al, and >=1 kind among Nb, Ti, and V in specified ratio, and regulating the amt. of residual carbon to a specific value or above. CONSTITUTION:The steel contains =0.005% residual carbon regulated by the formula, =1 kind among

3. 发明专利

JPS59107775A Four-electrode submerged arc welding method 失效
标题翻译：四电极电弧焊接方法
公开(公告)号：JPS59107775A
公开(公告)日：1984-06-22
申请号：JP21539382
申请日：1982-12-10
申请人： Nippon Kokan Kk
发明人： HIRABAYASHI KIYOTERU , AKAO KAZUTAKA , TAIRA TADAAKI
IPC分类号： B23K9/00 , B23K9/18
CPC分类号： B23K9/188
摘要： PURPOSE:To obtain a bead having a smooth surface in the stage of high speed welding as well in a four-electrode submerged arc welding method by performing welding while oscillating the 4th electrode on the uppermot steam side in the welding advance direction in the direction intersecting orthogonally the welding advance direction at respectively regulated frequency and amplitude. CONSTITUTION:Arcs are generated between the 1st-4th electrodes 1a-1d and base materials 2 and four-electrode submerged arc welding is performed. The 4th electrode 1d on the uppermost stream side in the welding advance direction is oscillated at 10-60Hz frequency and 0.1-3.0mm. amplitude in the direction intersecting orthogonally the welding advance direction. The electrodes are so connected as to have the preferred phases wherein the phase of the electrode 1b is advanced by 90 deg. from the phase of the electrode 1a, the phase of the electrode 1c is advanced by 90 deg. from the phase of the electrode 1b and the phase of the electrode 1d is advanced by 90 deg. from the phase of the electrode 1c. The beam having much smoother surface than the case in which the electrode 1d is oscillated is thus obtd.
摘要翻译：目的：为了在四电极埋弧焊接方法中获得具有平滑表面的珠粒，通过在沿着焊接前进方向的上蒸汽侧的第四电极在相交方向上振荡的同时进行焊接正交焊接前进方向分别调节频率和幅度。构成：在第1〜4电极1a-1d和基材2之间产生电弧，进行4电极埋弧焊。焊接前进方向最上游侧的第4电极1d以10〜60Hz频率振荡，0.1〜3.0mm。在垂直于焊接前进方向的方向上振幅。电极被连接成具有优选的相，其中电极1b的相位提前90度。从电极1a的相位，电极1c的相位提前90度。从电极1b的相位和电极1d的相位提前90度。从电极1c的相位。因此，具有比电极1d振荡的情况更光滑的光束。

4. 发明专利

JPS595079B2 JPS595079B2 - 失效
公开(公告)号：JPS595079B2
公开(公告)日：1984-02-02
申请号：JP16328978
申请日：1978-12-27
申请人： Nippon Kokan Kk
发明人： TAIRA TADAAKI , AKAO KAZUTAKA , ICHINOSE HIROYUKI
IPC分类号： B23K35/362 , B23K35/36 , B23K35/40

5. 发明专利

JPH0579595A VALVE INSTALLED BY USING FITTING FOR HOT TAP 失效
公开(公告)号：JPH0579595A
公开(公告)日：1993-03-30
申请号：JP20964391
申请日：1991-08-21
申请人： JAPAN STEEL & TUBE CONSTR , NIPPON KOKAN KK
发明人： NEMOTO MINORU , KAWAI TOSHIAKI , UNEMOTO YASUO , KITO TOMIYUKI , TAKANASHI YOJI , AKAO KAZUTAKA
IPC分类号： F16L55/00
摘要： PURPOSE:To install a valve by using a fitting for hot tap which can be inserted into a conduit without being restricted by the execution time, in a short construction period. CONSTITUTION:An expandle joint pipe 64 is connected with a valve 59, and a jack 66 and a supporting shaft 70 for suspending the valve are installed on the expandable joint pipe 64, and an operating shaft 67 extending upward is installed on the jack 66, and a receiving cylinder 74 which is fitted at the edge part of the pipe is installed at the edge parts of the valve 59 and the expandable joint pipe 64.

6. 发明专利

JPH0571685A VALVE USING FITTING FOR HOT TAP 失效
公开(公告)号：JPH0571685A
公开(公告)日：1993-03-23
申请号：JP23637591
申请日：1991-09-17
申请人： TOKYO GAS CO LTD , NIPPON KOKAN KK , JAPAN STEEL & TUBE CONSTR
发明人： YOSHIDA KENTARO , FUJIMAKI TERUAKI , AKAO KAZUTAKA , TSURUMAKI TOMIO , KITO TOMIYUKI , NEMOTO MINORU , KAWAI TOSHIAKI , UNEMOTO YASUO
IPC分类号： F16K27/00 , F16L55/00
摘要： PURPOSE:To provide a valve which can be installed in a main pipe at an optional time with neither stopping a flow in the main pipe nor reducing pressure therein, and can block a sectional area of the main pipe and make fluid flow only to the branched pipe. CONSTITUTION:A seal flange 59 is rotatably provided on a neck part fitting 55 of an upper fitting 53 with a sealing structure. A shaft 60, penetrating the seal flange 59 with a sealing structure, has a lower end jounalled by a reception port 69 formed on a lower fitting 54. A pair of stoppers 64, 64 are arranged on both sides of the shaft 60 so as to interrupt a cut end of a pipeline 5.

7. 发明专利

JPH0138597B2 失效
公开(公告)号：JPH0138597B2
公开(公告)日：1989-08-15
申请号：JP1056483
申请日：1983-01-27
申请人： NIPPON KOKAN KK
发明人： HIRABAYASHI KYOTERU , AKAO KAZUTAKA , TAIRA TADAAKI , NISHINO YUKIO , TOMA HIDEO
IPC分类号： B23K9/23 , B23K33/00

8. 发明专利

JPS6324800B2 失效
公开(公告)号：JPS6324800B2
公开(公告)日：1988-05-23
申请号：JP15161579
申请日：1979-11-22
申请人： NIPPON KOKAN KK
发明人： TAIRA TADAAKI , HIRABAYASHI KYOTERU , AKAO KAZUTAKA , ICHINOSE HIROYUKI , TERUNUMA TOSHIKATSU , KAZAMA SHINICHI
IPC分类号： B23K9/00 , B23K9/032

9. 发明专利

JPS59137191A Welding method of clad steel pipe 失效
标题翻译：钢管焊接方法
公开(公告)号：JPS59137191A
公开(公告)日：1984-08-07
申请号：JP1056483
申请日：1983-01-27
申请人： Nippon Kokan Kk
发明人： HIRABAYASHI KIYOTERU , AKAO KAZUTAKA , TAIRA TADAAKI , NISHINO YUKIO , TOUMA HIDEO
IPC分类号： B23K9/23 , B23K33/00
CPC分类号： B23K33/006
摘要： PURPOSE:To weld a seam part without generating defect such as high temp. crack or the like by forming the inside surface side of a double Vee groove to be formed on a clad steel pipe to a double-step groove, and subjecting the 2nd step on the inside to band arc welding after welding the 1st step on the inside on the outside. CONSTITUTION:The outside surface 7 of a double Vee groove 5 in the seam part of a clad steel pipe consisting of a low alloy steel 1a on the outside and a stinless steel 1b, etc. on the inside is formed to 60-90 deg., and the inside surface 6 is formed to a double-step groove consisting of the 1st step 6a of 60-90 deg. and the 2nd step 6b of 90-140 deg.. The 1st step 6a on the inside is first welded by submerged arc welding. The welding is accomplished by taking care to keep the steel 1b part free from the toe of the weld bead. The surface 7 is then welded in the same way. The 2nd step 6b on the surface 6 side is welded by band arc welding using a band electrode in succession to the above-mentioned welding. The defect such as high temp. weld crack or the like is prevented and the defectless weld zone having no slag inclusion is obtd. by the above-mentioned method.
摘要翻译：目的：焊接焊缝，不会产生高温等缺陷。通过将形成在复合钢管上的双V形槽的内表面侧形成为双阶槽，并且在第一阶段焊接在内部上之后对第二阶段进行带状电弧焊接在外面。构成：由外侧的低合金钢1a和内侧的不锈钢1b等组成的复合钢管的接缝部分中的双V形槽5的外表面7形成为60-90度。并且内表面6形成为由60-90度的第一步骤6a组成的双步槽。第二步6b为90-140度。第一步骤6a在内部首先通过埋弧焊焊接。焊接是通过小心保持钢筋1b部分没有焊缝的趾部来实现的。然后以相同的方式焊接表面7。表面6侧的第二台阶6b通过带状电极的带状电弧焊接而与上述的焊接相接合。缺点如高温可以防止焊缝裂纹等，并且没有无渣夹层的无缺陷焊接区。通过上述方法。

10. 发明专利

JPS594993A Welding method of tempered type steel pipe 失效
标题翻译：温度型钢管焊接方法
公开(公告)号：JPS594993A
公开(公告)日：1984-01-11
申请号：JP11258782
申请日：1982-07-01
申请人： Nippon Kokan Kk
发明人： HIRABAYASHI KIYOTERU , AKAO KAZUTAKA , TAIRA TADAAKI , ICHINOSE HIROYUKI
IPC分类号： B23K9/23 , B23K9/18 , B23K35/30
CPC分类号： B23K35/3066
摘要： PURPOSE:To obtain a welded steel pipe having high tensile strength and low temp. toughness, by tempering the same under limited conditions under submerged arc welding by a wire of the specific compsn. consisting of C, Si, Mn, Ni, Cu, P, S, Fe, etc. and a flux having specific basicity. CONSTITUTION:A steel pipe is welded by submerged arc welding by using a welding wire consisting of 0.05-0.15% C, =1.5, more preferably about 1.5-2.5 basicity B expressed by the equations. The welded steel pipe is quenched after heating to 900-1,100 deg.C and is then tempered for >=5min at 600-700 deg.C, whereby the welded steel pipe having the weld metal of high low temp. toughness wherein the Charpy transition temp. is about =50kg/mm. is obtd.
摘要翻译：目的：获得具有高抗拉强度和低温的焊接钢管。韧性，在有限条件下通过特定组合物的电线在水下电弧焊下进行回火。由C，Si，Mn，Ni，Cu，P，S，Fe等组成，具有特定碱性的助熔剂。构成：通过使用由0.05-0.15％C，<= 0.1％Si，1.0-2.0％Mn，3.0-9.0％Ni，<= 1.0％Cu组成的焊丝，通过埋弧焊接焊接钢管， 0.015％P，<= 0.010％S，余量为Fe和不可避免的杂质，以及由等式表示的约> = 1.5，更优选约1.5-2.5碱度B的焊剂。焊接钢管在加热到900-1100℃后进行淬火，然后在600-700℃回火≥5分钟，焊接钢管的焊接金属温度低。韧性，其中夏比转变温度约<= -50℃，常温下的拉伸强度。大约> = 50kg / mm。<2>是obtd。

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