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公开(公告)号：EP3006154B1
公开(公告)日：2018-01-17
申请号：EP14807362.0
申请日：2014-06-02
发明人： WAKABAYASHI, Chisato , WATANABE, Fuminori , FURUSAKO, Seiji , MIYAZAKI, Yasunobu , KAWATA, Hiroyuki , OKADA, Tohru , HAMATANI, Hideki
IPC分类号： B23K11/11 , B23K11/16 , B23K11/24 , B23K103/04
CPC分类号： B23K11/115 , B23K11/16 , B23K2103/04
摘要： By obtaining a spot-welded joint being a spot-welded joint formed by overlapping a plurality of pieces of steel plates (1A, 1B) and performing spot welding on the steel plates, including a high-strength steel plate whose tensile strength is 750 (MPa) to 2500 (MPa), being at least one piece of steel plate out of the plurality of pieces of steel plates, in which a carbon equivalent Ceq of the high-strength steel plate is 0.20 mass% to 0.55 mass%, and ten or more of iron-based carbides in each of which a length of a longest portion is 0.1 (µm) or more exist in a square region 103 within a heat-affected zone 4 of a cross section that passes through a center of a welding mark, and is cut along a plate thickness direction of the steel plates (1A, 1B), a cross tensile strength of the spot-welded joint to be formed is improved.
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2.发明公开
公开(公告)号：EP2891537A1
公开(公告)日：2015-07-08
申请号：EP12883858.8
申请日：2012-08-31
发明人： HAMATANI, Hideki , WATANABE, Fuminori , TSUKAKOSHI, Kazumoto , MIZUHASHI, Nobuo , ASANO, Takuya , MIURA, Takao , MOTOYOSHI, Takashi , YAMAMOTO, Kazuto , TANAKA, Kimiharu
IPC分类号： B23K13/06
CPC分类号： B23K13/06 , B23K11/0006 , B23K11/0873 , B23K11/36 , B23K13/046 , B23K2201/06 , B23K2201/10 , B23K2203/04
摘要： To utilize electric resistance welded steel pipes as high-grade steel pipes such as oil well pipes, the qualities of the electric resistance welded steel pipes, in particular, the components of a plasma operating gas in plasma-shielded welding were fundamentally reexamined to reduce penetrator defects. As a result, an effect achieved by adding no or a minor amount of hydrogen, said effect having been ignored by conventional findings, was newly discovered and an optimum plasma operating gas composition was successfully obtained. Provided is a method for producing a plasma-shielded electric resistance welded steel pipe, said method comprising, in shaping a steel sheet into a pipe and welding end faces thereof, applying a voltage to a plasma operating gas that is supplied between a cathode and an anode of a plasma gun to generate a plasma and then shielding the vicinity of a weld part by the plasma, characterized in that the components of the plasma operating gas comprise, in terms of vol%, 70-90% inclusive of N 2 and the balance being Ar and inevitable impurities. Also provided is a method for producing a plasma-shielded electric resistance welded steel pipe, characterized in that the plasma operating gas contains 1 vol% or less of H 2 .
摘要翻译： 为了将电阻焊钢管用作油井管等高级钢管，基本上重新检查了电阻焊钢管的质量，特别是等离子体保护焊接中的等离子体操作气体的成分，以减少穿透器 缺陷。 结果，新发现了通过添加无或少量氢而获得的效果，所述效果已被常规发现忽略，并且成功获得了最佳等离子体操作气体组成。 本发明提供一种等离子体保护电阻焊钢管的制造方法，其特征在于，在将钢板成形为管状并对其端面进行焊接时，对供给到阴极与阴极之间的等离子体工作气体施加电压 等离子体枪的阳极以产生等离子体，然后通过等离子体屏蔽焊接部分的附近，其特征在于，等离子体工作气体的组分按体积％计包含70-90％（包括N2）和余量 是Ar和不可避免的杂质。 还提供一种等离子体保护电阻焊钢管的制造方法，其特征在于，等离子体工作气体含有1体积％以下的H 2。
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公开(公告)号：EP3521475A1
公开(公告)日：2019-08-07
申请号：EP17858089.0
申请日：2017-08-23
摘要： An electric resistance welded steel pipe for a torsion beam, in which a base metal portion includes, in terms of % by mass, 0.04 to 0.12% of C, 0.03 to 1.20% of Si, 0.30 to 2.50% of Mn, 0.08 to 0.24% of Ti, 0.005 to 0.500% of Al, 0.01 to 0.06% of Nb, and 0.0005 to 0.0100% of N, a balance including Fe and impurities, wherein V c90 , defined by the following Formulae (i) and (ii), is 200 or more, a mass ratio of Ti content to C content is from 0.85 to 5.00, an areal ratio of ferrite is 80% or more, an average crystal grain size of ferrite crystal grains is 10 µm or less, and an average aspect ratio of ferrite crystal grains is 2.0 or less, in a metallographic microstructure of a central portion in a wall thickness direction of the base metal portion; logV c90 = 2.94 - 0.75 (βa-1) Formula (i); βa = 2.7C + 0.4Si + Mn + 0.45Ni + 0.8Cr + Mo Formula (ii).
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公开(公告)号：EP3006154A1
公开(公告)日：2016-04-13
申请号：EP14807362.0
申请日：2014-06-02
发明人： WAKABAYASHI, Chisato , WATANABE, Fuminori , FURUSAKO, Seiji , MIYAZAKI, Yasunobu , KAWATA, Hiroyuki , OKADA, Tohru , HAMATANI, Hideki
CPC分类号： B23K11/115 , B23K11/16 , B23K2203/04
摘要： By obtaining a spot-welded joint being a spot-welded joint formed by overlapping a plurality of pieces of steel plates (1A, 1B) and performing spot welding on the steel plates, including a high-strength steel plate whose tensile strength is 750 (MPa) to 2500 (MPa), being at least one piece of steel plate out of the plurality of pieces of steel plates, in which a carbon equivalent Ceq of the high-strength steel plate is 0.20 mass% to 0.55 mass%, and ten or more of iron-based carbides in each of which a length of a longest portion is 0.1 (µm) or more exist in a square region 103 within a heat-affected zone 4 of a cross section that passes through a center of a welding mark, and is cut along a plate thickness direction of the steel plates (1A, 1B), a cross tensile strength of the spot-welded joint to be formed is improved.
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公开(公告)号：EP2689640B1
公开(公告)日：2015-08-12
申请号：EP11761161.6
申请日：2011-02-25
发明人： HAMATANI, Hideki , TAKEUCHI, Sunao , WATANABE, Fuminori , NOSE, Tetsuro , SOLONENKO, Oleg Pavlovich , SMIRNOV, Andrey Vladimirovich
IPC分类号： H05H1/34
CPC分类号： H05H1/02 , H05H1/34 , H05H2001/3426 , H05H2001/3452 , H05H2001/3478 , H05H2001/3484
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公开(公告)号：EP3085800B1
公开(公告)日：2019-02-06
申请号：EP13899650.9
申请日：2013-12-20
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7.发明授权
公开(公告)号：EP2839919B1
公开(公告)日：2017-11-01
申请号：EP13779048.1
申请日：2013-04-05
发明人： HASEGAWA, Noboru , FUKAMI, Toshisuke , MIZUHASHI, Nobuo , HAMATANI, Hideki , KARUBE, Yoshifumi , MIURA, Takao , TANAKA, Kimiharu , YAMAMOTO, Kazuto
CPC分类号： B23K11/253 , B21B37/74 , B21B37/78 , B21C37/08 , B23K11/0873 , B23K13/025 , B23K13/08
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8.发明授权
公开(公告)号：EP2891537B1
公开(公告)日：2016-12-28
申请号：EP12883858.8
申请日：2012-08-31
发明人： HAMATANI, Hideki , WATANABE, Fuminori , TSUKAKOSHI, Kazumoto , MIZUHASHI, Nobuo , ASANO, Takuya , MIURA, Takao , MOTOYOSHI, Takashi , YAMAMOTO, Kazuto , TANAKA, Kimiharu
CPC分类号： B23K13/06 , B23K11/0006 , B23K11/0873 , B23K11/36 , B23K13/046 , B23K2201/06 , B23K2201/10 , B23K2203/04
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公开(公告)号：EP3050990B1
公开(公告)日：2018-11-14
申请号：EP14875170.4
申请日：2014-12-11
IPC分类号： B21C37/08 , B21D3/02 , C21D8/10 , C21D9/08 , C21D9/50 , C22C38/58 , B23K13/00 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/42 , C22C38/44 , C22C38/02 , C22C38/48 , C22C38/50 , C22C38/54
CPC分类号： C21D9/08 , B21C37/08 , B23K11/00 , B23K11/0873 , B23K13/00 , B23K2101/10 , B23K2103/04 , C21D8/10 , C21D8/105 , C21D9/50 , C21D9/505 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/20 , C22C38/24 , C22C38/28 , C22C38/42 , C22C38/44 , C22C38/48 , C22C38/50 , C22C38/54 , C22C38/58 , C22C38/60
摘要： An electric resistance welded steel pipe for an oil well, including in terms of mass%: 0.02 to 0.14% of C, 0.05 to 0.50% of Si, 1.0 to 2.1% of Mn, 0.020% or less of P, 0.010% or less of S, 0.010 to 0.100% of Nb, 0.010 to 0.050% of Ti, 0.010 to 0.100% of Al, and 0.0100% or less of N, wherein the contents of Cu, Ni, Cr, Mo, V, and B are 0 to 0.50% of Cu, 0 to 1.00% of Ni, 0 to 0.50% of Cr, 0 to 0.30% of Mo, 0 to 0.10% of V, and 0 to 0.0030% of B, respectively, a remainder consisting of Fe and unavoidable impurities, and wherein in a case in which a full thickness specimen is subjected to a pipe axis direction tensile test, a tensile strength is 780 MPa or more, the ratio of a 0.2% proof stress to the tensile strength [0.2% proof stress/tensile strength] is 0.80 or more, and the ratio of a 2% flow stress to the tensile strength [2% flow stress/tensile strength] is from 0.85 to 0.98.
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10.发明公开WELDED STATE MONITORING SYSTEM AND WELDED STATE MONITORING METHOD 审中-公开SCHWEISSZUSTANDSÜBERWACHUNGSSYSTEMUNDSCHWEISSZUSTANDSÜBERWACHUNGSVERFAHREN
公开(公告)号：EP3127646A1
公开(公告)日：2017-02-08
申请号：EP15772548.2
申请日：2015-03-27
发明人： HASEGAWA, Noboru , HAMATANI, Hideki , KARUBE, Yoshifumi , UEDA, Manabu , TANIMOTO, Michitoshi , OOSAWA, Takashi
CPC分类号： G06T7/001 , B21C37/08 , B23K11/0006 , B23K11/0073 , B23K11/0873 , B23K11/36 , B23K13/025 , B23K31/125 , B23K2201/06 , B23K2203/04 , G01N21/8851 , G01N2201/10 , G02B5/208 , G06T7/0004 , G06T7/136 , G06T2207/30108 , G06T2207/30136 , H04N5/247
摘要： A welded state monitoring system according to an aspect of the present invention is a welded state monitoring system used for plasma shielded electric resistance welding in which electric resistance welding is performed while irradiating a weld zone of a steel sheet with plasma, and is provided with a plasma irradiation device which irradiates the weld zone with plasma, a first image capturing device which captures an image of the weld zone from above and has an image sensor capable of detecting light having a wavelength of 850 nm or more, a first wavelength region limiting device which limits light incident on the first image capturing device to a wavelength region of 850 nm or more, and an image processing device which subjects the image captured by the first image capturing device to image processing and analyzes the welded state of the weld zone thereby being able to analyze the welded state without being affected by the plasma.
摘要翻译： 根据本发明的一个方面的焊接状态监测系统是用于等离子体屏蔽电阻焊接的焊接状态监控系统，其中在等离子体照射钢板的焊接区域的同时进行电阻焊接，并且设置有 等离子体照射焊接区域的等离子体照射装置，从上方捕获焊接区域的图像并具有能够检测波长为850nm以上的光的图像传感器的第一图像捕获装置，第一波长区域限制装置 其将入射在第一图像拍摄装置上的光限制在850nm以上的波长区域;以及图像处理装置，其对由第一图像拍摄装置拍摄的图像进行图像处理，并分析焊接区域的焊接状态， 能够分析焊接状态而不受等离子体的影响。
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