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1. 发明专利

JPH05337651A 失效
公开(公告)号：JPH05337651A
公开(公告)日：1993-12-21
申请号：JP1731493
申请日：1993-02-04
申请人： NIPPON STEEL CORP , HITACHI SHIPBUILDING ENG CO
发明人： OHAMA NOBUYUKI , OYAMA SHIGEO , SHINADA KOICHI , HORII YUKIHIKO , MOTOMATSU RYUICHI , KITAMURA YUKIYOSHI , MIYAZAKI TATEO , TAKEUCHI MAKOTO
IPC分类号： B23K9/18 , B23K35/362
摘要： PURPOSE:To attain the high speed of welding and further, to form front and back beads having a satisfactory shape without cracking by making the wire diameter and an electric current of each electrode, and the distance between electrodes to the specified quantities by using the specified number of electrodes. CONSTITUTION:When the wire diameter of a first electrode and the wire diameter of second-fourth electrodes are made to 4.8mm and 6.4mm, respectively by using four electrodes, further, the electric currents of the first, second, third and fourth electrodes, the welding speed and the thickness of steels to be welded are made to I1, I2, I3 and I4 (A), Scm/min and (t)mm respectively, 60

2. 发明专利

JP2002103036A METHOD FOR SEAM-WELDING UO STEEL PIPE 失效
公开(公告)号：JP2002103036A
公开(公告)日：2002-04-09
申请号：JP2000303621
申请日：2000-10-03
申请人： NIPPON STEEL CORP
发明人： MORIMOTO YUTAKA , OKITA SHIGERU , SHINADA KOICHI
IPC分类号： B23K9/235 , B23K9/00 , B23K9/025 , B23K10/00 , B23K101/06
摘要： PROBLEM TO BE SOLVED: To provide a seam welding method excellent in the quality of a weld zone by which the depth of good penetration is obtained with the small quantity of deposite at tack welding in the seam welding method when manufacturing a thin wall UO steel pipe. SOLUTION: Relating to the seam welding method when manufacturing the UO steel pipe, in this seam welding method of the UO steel pipe, by beforehand grooving the root face of a groove part, through holes such that the average area in the cross section of the groove horizontal to the surface of a steel plate in the thickness direction in the groove part is 0.05-1,500 mm2, the interval between adjacent grooves is 1-500 mm are formed and also, by performing plasma welding provided that the heat gain of welding is 0.1-1.5 kJ/mm without using fillar metal, part of the groove faces is heated and molten. After that, provided that the quantity of the deposite of weld metal is 0.05-2.5 g/cm, the tack welding is performed using a consumable electrode type gas shielded arc welding and, after that, substantial seam welding is carried out.

3. 发明专利

JPH05247583A 失效
公开(公告)号：JPH05247583A
公开(公告)日：1993-09-24
申请号：JP4521392
申请日：1992-03-03
申请人： NIPPON STEEL CORP
发明人： DENPO KOZO , OGAWA HIROYUKI , SHINADA KOICHI , TAMEHIRO HIROSHI
IPC分类号： C22C38/00 , C22C38/20 , C22C38/42
摘要： PURPOSE:To reduce the difference in corrosion rate between a welding section and a base material by adding Cr to the welding section of a welded steel pipe for line pipe with a specific composition. CONSTITUTION:In a welded steel pipe for line pipe, a base material part made of steel has a composition consisting of, by weight, 0.01-0.1% C, 0.01-0.5% Si, 0.1-2.0% Mn, 0.1-0.5% Ni, 0.01-0.05% Cu, 0.01-0.05% Nb,

4. 发明专利

JPH01293975A WELDING ABNORMALITY DETECTOR 失效
公开(公告)号：JPH01293975A
公开(公告)日：1989-11-27
申请号：JP12123588
申请日：1988-05-18
申请人： NIPPON STEEL CORP
发明人： KITAMURA YUKIYOSHI , MIYAZAKI HIDEKI , FUJIMORI SHIGEO , SHINADA KOICHI
IPC分类号： B23K9/10 , B23K9/06 , B23K9/095
摘要： PURPOSE:To reduce the occurrence of a defective product by providing a signal converter provided with AC current and voltage transducers and low-pass filters to detect the occurrence of abnormality based on a comparison between its output value and set upper and lower limit values. CONSTITUTION:A shunt device 2 is provided to a welding power source 1 and connected to an amplifier 3 provided with a low-pass filter. Current transformers 7 and 8 are arranged in the middle of output cables of an AC power source 5 to share a welding head 4 with a DC power source and an independent AC power source 6 and terminals thereof are connected to AC transducers 9 and 10. Further, an amplifier 18 with a low-pass filter and AC voltage transducers 19 and 20 are arranged. Since a signal is subjected to A/D conversion by using the transducers, the averaging processing and data collecting time are remarkably reduced. By this method, since the occurrence of abnormality of the current, voltage, etc., is detected rapidly, the occurrence of the defective product is reduced.

5. 发明专利

JPH0118837B2 失效
公开(公告)号：JPH0118837B2
公开(公告)日：1989-04-07
申请号：JP17891182
申请日：1982-10-12
申请人： NIPPON STEEL CORP
发明人： NAGANO KYOICHI , NAGANUMA HIROSHI , SHINADA KOICHI , SONEDA SHIGENOBU
IPC分类号： B23K35/40 , B23K35/362

6. 发明专利

JPH0118836B2 失效
公开(公告)号：JPH0118836B2
公开(公告)日：1989-04-07
申请号：JP4758584
申请日：1984-03-13
申请人： NIPPON STEEL CORP
发明人： NAGANO KYOICHI , NAGANUMA HIROSHI , SHINADA KOICHI , TAMURA MOTONORI , SONEDA SHIGENOBU
IPC分类号： B23K35/362 , B23K35/36

7. 发明专利

JPS5160642A Furatsukusubatsukingukatamensenkoyosetsuho 失效
公开(公告)号：JPS5160642A
公开(公告)日：1976-05-26
申请号：JP13526874
申请日：1974-11-25
申请人： Nippon Steel Corp
发明人： SHINADA KOICHI , KOYAMA KUNIO , MYAHARA SATORU
IPC分类号： B23K9/18 , B23K9/02 , B23K9/035 , B23K37/06

8. 发明专利

JP2009050865A Multiple electrode submerged arc welding method 有权
标题翻译：多电极电弧焊接方法
公开(公告)号：JP2009050865A
公开(公告)日：2009-03-12
申请号：JP2007217653
申请日：2007-08-23
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MORIMOTO YUTAKA , HASHIBA YUJI , SHINADA KOICHI , OKITA SHIGERU
IPC分类号： B23K9/18 , B23K9/23 , B23K35/30 , B23K35/368 , B23K103/04 , C22C38/00 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a sound weld metal having satisfactory low temperature toughness and free from slag-in at the tip of a bead, in downward multiple electrode submerged arc welding.
SOLUTION: The downward multiple electrode submerged arc welding method for producing one molten pool is characterized in that, when a weld metal having a tensile strength of 800 to 1,200 MPa is produced by downward multiple electrode submerged arc welding, among a plurality of electrode wires, one or more electrodes are composed of a metal-cored wire(s) comprising O of 0.03 to 0.50% by mass% to the whole wire, and the remaining electrode(s) is composed of a solid wire(s), and also, a specified componential flux is used, thus a weld metal having high strength and high toughness and having no welding defects can be obtained.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于制造具有令人满意的低温韧性并且在胎圈的尖端处没有熔渣的良好焊接金属的方法，在向下的多电极埋弧焊中。解决方案：一种用于生产一个熔池的向下多电极埋弧焊接方法的特征在于，当通过向下的多电极埋弧焊接产生抗拉强度为800至1200MPa的焊接金属时，电极线，一根或多根电极由包含0〜0.03质量％左右的全部金属线的金属芯线构成，剩余电极由实心线构成，并且也可以使用规定的组成通量，因此可以获得具有高强度和高韧性并且没有焊接缺陷的焊接金属。版权所有（C）2009，JPO＆INPIT

9. 发明专利

JPH07284985A GAS SHIELDED ARC WELDING WIRE FOR LINE PIPE 失效
公开(公告)号：JPH07284985A
公开(公告)日：1995-10-31
申请号：JP9793694
申请日：1994-04-13
申请人： NIPPON STEEL CORP
发明人： KIMOTO ISAMU , KOYAMA HIROSHI , SHINADA KOICHI , OGATA YOSHINORI
IPC分类号： B23K9/16 , B23K9/00 , B23K35/30 , C22C38/00 , C22C38/18
摘要： PURPOSE:To provide a gas shielded arc welding wire having excellent selective corrosion resistance and cracking resistance of weld metal and high welding workability in circumferential welding of a line pipe for transporting petroleum contg. CO2, natural gases, etc. CONSTITUTION:This gas shielded arc welding wire for the line pipe has a compsn. consisting of 0.010 to 0.060% C, 0.2 to 0.6% Si, 1.0 to 2.5% Mn, 0.7 to 2.0% Cr, 0.005 to 0.08% Al,

10. 发明专利

JPH01156434A METHOD FOR ADJUSTING COMPOSITION IN ELECTRON-BEAM MELTING OR TITANIUM 失效
公开(公告)号：JPH01156434A
公开(公告)日：1989-06-20
申请号：JP31483587
申请日：1987-12-12
申请人： NIPPON STEEL CORP
发明人： FUJI MASAO , FUKUMOTO SHIGEO , SHINADA KOICHI
IPC分类号： C22B9/22 , C22B34/12
摘要： PURPOSE:To uniformly and stably add the components to be added and to produce a high-quality titanium ingot by depositing a liq. conditioner on the surface of the essential titanium material, and then drying the material at the time of adjusting the composition in the electron-beam melting of titanium. CONSTITUTION:When titanium is melted by an electron beam and the contents of iron and/or oxygen are adjusted, a soln. contg. an iron ion (an iron chloride soln. etc.) or a soln. of a metal contg. oxygen (a soln. of sodium aluminate, etc.) or their mixed salt is deposited on the essential titanium material (sponge titanium, etc.), and then dried. By this method, the adjusting components can be uniformly added, and a high-quality ingot having the desired composition is produced by electron-beam melting.

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