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71. 发明专利

JP2012127857A Evaluation method of steel plate excellent in welding heat affected part toughness 有权
标题翻译：焊接热影响部分韧性优良的钢板评价方法
公开(公告)号：JP2012127857A
公开(公告)日：2012-07-05
申请号：JP2010280624
申请日：2010-12-16
申请人： Kiyohito Ishida , Jfe Steel Corp , Jfeスチール株式会社 , 清仁石田
发明人： YAMASHITA TAKAKO , MURAKAMI YOSHIAKI , OI KENJI , ISHIDA KIYOHITO
IPC分类号： G01N33/20 , C22C38/00 , C22C38/06 , C22C38/16
摘要： PROBLEM TO BE SOLVED: To provide an evaluation method of a steel plate for evaluating welded part toughness without performing a synthetic weld thermal cycle test.SOLUTION: According to the evaluation method for a steel plate, 0.01 mass % or less of Al, 0.5 to 2.0 mass % of Mn, 0.0005 to 0.0100 mass % of O, 0.0005 to 0.0100 mass % of S, 0.0010 to 0.0100 mass % of REM are contained, and content of O, content of Mn, and content of REM satisfy equation (1); content of S and content of Mn satisfy equation (2); a composition and the number of depositions per unit area of a steel plate where a remaining part has composition comprising Fe and unavoidable impurity are measured to perform evaluation by using REM content and Mn content of the deposition and proportion of the number of depositions to be oxysulphide among the deposition: (1) [Mn]×[O]×0.2≤[REM]≤[Mn]×[O]×1.2; (2) [S]≥0.00294/[Mn].
摘要翻译：要解决的问题：提供一种用于评价焊接部韧性的钢板的评价方法，而不进行合成焊接热循环试验。＆lt; P＆gt;解决方案：根据钢板的评价方法，Al为0.01质量％以下，Mn为0.5〜2.0质量％，O为0.0005〜0.0100质量％，S为0.0005〜0.0100质量％，0.0010〜0.0100 含有REM的质量％，O含量，Mn含量和REM含量满足式（1）; S含量和Mn含量满足式（2）; 测量剩余部分含有Fe和不可避免的杂质的组成的钢板的单位面积的组成和沉积次数，通过使用REM含量和沉积的Mn含量和硫化物数量的比例进行评价在沉积中：（1）[Mn]×[O]×0.2≤[REM]≤[Mn]×[O]×1.2; （2）[S]≥0.00294/ [Mn]。版权所有（C）2012，JPO＆INPIT

72. 发明专利

JP2012115839A Laser beam-welded joint excellent in ductility of weld metal portion 有权
标题翻译：激光焊接接头优质焊接金属部分
公开(公告)号：JP2012115839A
公开(公告)日：2012-06-21
申请号：JP2010264792
申请日：2010-11-29
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： SUMI HIROYUKI , OI KENJI
IPC分类号： B23K35/30 , B23K26/14 , B23K26/20 , B23K26/32 , B23K103/04 , C22C38/00 , C22C38/14 , C22C38/54
摘要： PROBLEM TO BE SOLVED: To provide a laser beam-welded joint comprising a steel material having a tensile strength of 780 MPa or higher, and having the tensile strength of a weld metal portion of 780 MPa or higher and excellent ductility.SOLUTION: The weld metal of the laser beam-welded joint contains, by mass, 0.02-0.14% C, 0.006-0.05% Ti, 0.02% Al, 0.001% B, 0.02-0.05% O, and 0.33-0.53% Ceq (=C+Mn/6+Si/24+Ni/40+Cr/5+Mo/4+V/14) (wherein Ceq is a carbon equivalent (mass%); and C, Mn, Si, Ni, Cr, Mo and V are the contents of respective alloy elements (mass%)), and has a microstructure including an acicular ferrite phase of 40% or more in an area ratio. A gas containing an oxygen-supplying gas is used as the shield gas for laser beam welding.
摘要翻译：解决的问题：提供一种包括拉伸强度为780MPa以上的钢材，焊接金属部的拉伸强度为780MPa以上，延展性优异的激光束焊接接头。
解决方案：激光束焊接接头的焊接金属质量含有0.02-0.14％C，0.006-0.05％Ti，0.02％Al，0.001％B，0.02-0.05％O和0.33-0.53 ％Ceq（= C + Mn / 6 + Si / 24 + Ni / 40 + Cr / 5 + Mo / 4 + V / 14）（Ceq为碳当量（质量％）; C，Mn，Si，Ni Cr，Mo，V为各合金元素的含量（质量％）），具有面积率为40％以上的针状铁素体相的微结构。使用含有供氧气体的气体作为激光焊接用保护气体。版权所有（C）2012，JPO＆INPIT

73. 发明专利

JP2011224655A Method for manufacturing laser welded steel pipe 有权
标题翻译：制造激光焊接钢管的方法
公开(公告)号：JP2011224655A
公开(公告)日：2011-11-10
申请号：JP2011076274
申请日：2011-03-30
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： YANO HIROSHI , SUMI HIROYUKI , OI KENJI
IPC分类号： B23K26/20 , B23K26/073
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a laser welded steel pipe, which solves the problem that undercut and underfill tend to occur in laser welding and by which the laser welded steel pipe of which the welded portions are of high quality is stably manufactured at a high yield rate.SOLUTION: In the method for manufacturing the laser welded steel pipe, a steel sheet is shaped into a cylindrical open pipe by means of forming rolls and the edge 2 of the cylindrical open pipe is irradiated with laser beams from the outer surface of the cylindrical open pipe while the edge 2 of the cylindrical open pipe is subjected to pressure by squeeze rolls, so that the edge 2 is welded. Two or more of laser beams 3-1, 3-2, 3-3 and 3-4, which are transmitted with the use of different fibers and of which the spot diameter in just focus is larger than 0.3 mm, are classified into preceding laser beams and following laser beams. The preceding laser beams are made to precede the following beams in the direction of a weld line, and laser beam welding is performed, with the center-to-center distance in the steel sheet between the preceding laser beams and the following beams being 1 mm or longer and with the preceding laser beams and the following beams being arrayed in the direction of the weld line.
摘要翻译：要解决的问题：为了提供一种激光焊接钢管的制造方法，其解决了激光焊接中容易发生底切和底部填充的问题，并且焊接部分的激光焊接钢管高以高产率稳定地制造质量。解决方案：在激光焊接钢管的制造方法中，钢板通过成形辊成形为圆筒形开口管，并且圆柱形开口管的边缘2从激光束的外表面照射激光束圆柱形开口管，而圆筒形开口管的边缘2由挤压辊承受压力，从而焊接边缘2。使用不同纤维传播的，其中刚好聚焦的光斑直径大于0.3mm的激光束3-1,3-2,3-3和3-4中的两个或更多个被分类为前一个激光束和跟随激光束。将先前的激光束沿着焊接线的方向制成在随后的光束之前，并且执行激光束焊接，其中在前面的激光束之间的钢板中的中心到中心距离和后面的光束是1mm 或更长，并且与之前的激光束并且随后的光束沿着焊接线的方向排列。版权所有（C）2012，JPO＆INPIT

74. 发明专利

JP2011173161A Manufacturing method of laser-welded steel pipe 审中-公开
标题翻译：激光焊管的制造方法
公开(公告)号：JP2011173161A
公开(公告)日：2011-09-08
申请号：JP2010040694
申请日：2010-02-25
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： YANO HIROSHI , OI KENJI
IPC分类号： B23K26/20 , B23K26/073
摘要： PROBLEM TO BE SOLVED: To manufacture a laser-welded steel pipe with superb quality at an excellent yield and efficiency while preventing undercut and underfill, by irradiating laser beam after the edge part of an open pipe is formed into an appropriate shape at the fabrication of the laser welded steel pipe. SOLUTION: The manufacturing method includes a thickness increasing step of increasing the edge parts prior to a pipe forming step or a welding step. In the thickness increasing step, on the outer surface side of the open pipe 1, plastic deformation is imparted to the region of 1 mm or more and t/3 or less from the edge surface to the circumferential direction, and also 0.5 mm or more and t/3 or less from the outer surface to the thickness direction. On the inner surface side of the open pipe, plastic deformation is imparted to the region of 1 mm or more and t/3 or less from the edge surface to the circumferential direction, and also 0.5 mm or more and t/3 or less from the inner surface to the thickness direction. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了在防止底切和底部填充的情况下以优异的成品率和效率制造具有优良质量的激光焊接钢管，通过在开口管的边缘部分形成适当形状之后照射激光束激光焊接钢管的制造。解决方案：制造方法包括在管形成步骤或焊接步骤之前增加边缘部分的厚度增加步骤。在厚度增加步骤中，在开口管1的外表面侧，从边缘表面到圆周方向的1mm以上且t / 3以下的区域赋予塑性变形，并且也为0.5mm以上从外表面到厚度方向t / 3以下。在开口管的内表面侧，从边缘表面到圆周方向的区域为1mm以上且t / 3以下的区域赋予塑性变形，并且，也为0.5mm以上且t / 3以下内表面到厚度方向。版权所有（C）2011，JPO＆INPIT

75. 发明专利

JP2011131258A Submerged arc welding method of steel material 有权
标题翻译：钢材的电弧焊接方法
公开(公告)号：JP2011131258A
公开(公告)日：2011-07-07
申请号：JP2009294531
申请日：2009-12-25
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： ISHIGAMI ATSUSHI , HAYAKAWA NAOYA , OI KENJI
IPC分类号： B23K9/18 , B23K103/04
摘要： PROBLEM TO BE SOLVED: To provide a submerged arc welding method capable of obtaining the beautiful bead appearance while obtaining the sufficient penetration at high welding speed with low heat input. SOLUTION: At least one of the inner surface welding and the outer surface welding is executed with the one-layer welding at the welding speed of ≥180 cm/min under the condition that the current density of the first and second electrodes satisfy the inequalities (1), the first electrode and the welding speed satisfy the inequality (2), and the total of the thickness of the steel material and the total groove sectional area of the inner surface and the outer surface satisfy the inequality (3). Inequality (1) : 95≤D 1 ≤3.3×D 2 , inequality (2) : v+0.1×I 1 ≤310, and inequality (3) : 3.9×t-S total ≤20, where D 1 : current density (A/mm 2 ) of the first electrode, D 2 : current density (A/mm 2 ) of the second electrode, v: welding speed (cm/min), I 1 : first electrode current (A), t: thickness (mm), S total : total groove sectional area (mm 2 ) of inner and outer surfaces. Preferably, the distance between the wire centers of the first and second electrodes measured at the surface position of the steel plate is set to 15-45 mm. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够在低热输入时以高焊接速度获得足够的穿透的同时获得美丽的珠粒外观的埋弧焊接方法。
解决方案：在第一和第二电极的电流密度满足条件下，以≥180cm/ min的焊接速度进行单层焊接，进行内表面焊接和外表面焊接中的至少一个不等式（1），第一电极和焊接速度满足不等式（2），钢材的厚度和内表面和外表面的总槽截面积的总和满足不等式（3）。不等式（1）：95≤D 1 ≤3.3×D 2 不等式（2）：v + 0.1×I 1 ≤310，和不等式（3）：3.9×tS ≤20，其中D 1 ：第一电极的电流密度（A / mm 2 ），第二电极的电流密度（A / mm 2 ），v：焊接速度（cm / min），I 1 ：内表面和外表面的第一电极电流（A），t：厚度（mm），S 总：总槽截面积（mm 2 ）。优选地，将在钢板的表面位置处测量的第一和第二电极的线中心之间的距离设定为15-45mm。版权所有（C）2011，JPO＆INPIT

76. 发明专利

JP2010240734A Method for manufacturing laser-welded steel pipe 有权
标题翻译：制造激光焊接钢管的方法
公开(公告)号：JP2010240734A
公开(公告)日：2010-10-28
申请号：JP2009250669
申请日：2009-10-30
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： YANO HIROSHI , OI KENJI , SUZUKI MASAHITO , KODAMA TOSHIBUMI
IPC分类号： B23K26/20 , B23K26/00 , B23K26/24 , B23K31/00
摘要： PROBLEM TO BE SOLVED: To provide a method for stably manufacturing a laser-welded steel pipe in a high yield by determining a laser welding situation highly precisely and by changing a welding condition on the basis of the determination result in manufacturing the laser-welded steel pipe. SOLUTION: An irradiation part of a laser beam emitted to an edge part is watched from the inner face side of an open pipe and, if a key hole penetrating to the inner face side of the open pipe is recognized, a welding condition by the laser beam is continuously maintained. If the key hole penetrating to the inner face side of the open pipe is not recognized, the welding condition by the laser beam is changed. Thus, welding is performed while the key hole penetrating from the outer face side to the inner face side of the open pipe is provided in the irradiation part of the laser beam. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种通过高精度地确定激光焊接情况并且基于制造激光器的确定结果改变焊接条件来以高产率稳定地制造激光焊接钢管的方法焊钢管。解决方案：从开口管的内表面侧观察发射到边缘部分的激光束的照射部分，并且如果识别到穿透开口管的内表面侧的键孔，则焊接条件由激光束连续保持。如果不能识别贯穿开口管内表面侧的键孔，则激光束的焊接条件发生变化。因此，在激光束的照射部分设置有从开口管的外表面侧到内表面侧的键孔的焊接。版权所有（C）2011，JPO＆INPIT

77. 发明专利

JP2010221298A Complex method of welding in combination of gas shield arc welding with submerged arc welding, and complex welding machine thereof 有权
标题翻译：焊接电弧焊接与焊接弧焊的复合焊接方法及其复合焊接机
公开(公告)号：JP2010221298A
公开(公告)日：2010-10-07
申请号：JP2010040619
申请日：2010-02-25
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： HAYAKAWA NAOYA , ISHIGAMI ATSUSHI , OI KENJI , SHIMADA KENJI , ODAKA MASATAKE
IPC分类号： B23K9/173 , B23K9/00 , B23K9/18 , B23K103/04
CPC分类号： B23K9/1735 , B23K9/025 , B23K9/09 , B23K9/188 , B23K28/02 , B23K33/004 , B23K2201/18 , B23K2203/04
摘要： PROBLEM TO BE SOLVED: To provide a complex method of welding and a complex welding machine thereof having a high productivity while preventing deterioration of toughness of HAZ, by maintaining electric current density in a proper range both for a gas-shield ark welding and a submerged ark welding, in welding steel plates by combining the gas-shield ark welding using multiple electrodes with the submerged arc welding using multiple electrodes.
SOLUTION: In the complex welding method and the complex welding machine in which the gas-shield ark welding is carried out on an abutted part of steel plates and the submerged ark welding is carried out at the rear thereof, the gas-shield ark welding is carried out using two or more electrodes, the first electrode in the gas-shield ark welding being a welding wire having the diameter of 1.4 mm or more while maintaining the electric current density of the first electrode at 320 A/mm
2 or more.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种复杂的焊接方法及其具有高生产率的复合焊接机，同时防止HAZ的韧性劣化，通过将电流密度保持在适用于气体屏蔽方案焊接的适当范围内和一个浸没式方舟焊接，通过使用多个电极组合使用多个电极的气体屏蔽方案焊接与埋弧焊接来焊接钢板。
解决方案：在复合焊接方法中，在钢板的邻接部分进行气体屏蔽方案焊接的复合焊接机，其后方进行浸没式方焊，使用两个以上的电极进行方案焊接，气体屏蔽方案焊接中的第一电极是直径为1.4mm以上的焊丝，同时将第一电极的电流密度保持在320A / mm 2 或更多。版权所有（C）2011，JPO＆INPIT

78. 发明专利

JP2010029938A Method for manufacturing laser-welded steel pipe 有权
标题翻译：制造激光焊接钢管的方法
公开(公告)号：JP2010029938A
公开(公告)日：2010-02-12
申请号：JP2009148610
申请日：2009-06-23
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： YANO HIROSHI , SUZUKI MASAHITO , KODAMA TOSHIBUMI , SAKASHITA SHIGETO , OI KENJI
IPC分类号： B23K26/00 , B23K26/20
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a laser-welded steel pipe stably in a high yield by highly and precisely determining a laser welding situation and by changing a welding condition on the basis of the determined result. SOLUTION: The irradiating region of a laser beam irradiated from an outer face side at an edge portion is monitored from the inner face side of an open pipe. When a key hole penetrating to the inner face side of the open pipe is observed, the welding condition of the laser beam is continuously kept. When the keyhole penetrating to the inner face side of the open pipe is not observed, the welding condition of the laser beam is changed. Thus, the welding operation is performed while the keyhole penetrating through the open pipe from the outer face side to the inner face side is formed in the irradiating region of the laser beam. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种通过高精度地确定激光焊接状况并且基于确定的结果改变焊接条件来以高产率稳定地制造激光焊接钢管的方法。解决方案：从开口管的内表面侧监测从边缘部分的外表面侧照射的激光束的照射区域。当观察到穿透开口管的内表面侧的键孔时，连续地保持激光束的焊接状态。当没有观察到穿透开口管内表面的锁孔时，激光束的焊接条件发生变化。因此，在激光束的照射区域中形成从外表面侧向内表面侧穿透开口管的锁孔，进行焊接作业。版权所有（C）2010，JPO＆INPIT

79. 发明专利

JP2009241092A Submerged arc welding machine 有权
标题翻译：自动焊接机
公开(公告)号：JP2009241092A
公开(公告)日：2009-10-22
申请号：JP2008089510
申请日：2008-03-31
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： HAYAKAWA NAOYA , ISHIGAMI ATSUSHI , OI KENJI
IPC分类号： B23K9/12 , B23K9/00 , B23K9/18
摘要： PROBLEM TO BE SOLVED: To provide a submerged arc welding machine scarcely causing weld defects even in high current-density welding.
SOLUTION: The submerged arc welding machine is provided with: a wire feeding motor having a rated torque of ≥1.0 N-m, a rotor inertia of ≤1.0×10
-4 kg-m
2 , and a lead time, to reach a rated rotational speed, of ≤100 msec under an unload condition; and a welding power source having drooping characteristics.
COPYRIGHT: (C)2010,JPO&INPIT

80. 发明专利

JP2009233679A Submerged arc welding method of steel material 审中-公开
标题翻译：钢材的电弧焊接方法
公开(公告)号：JP2009233679A
公开(公告)日：2009-10-15
申请号：JP2008079525
申请日：2008-03-26
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： ISHIGAMI ATSUSHI , HAYAKAWA NAOYA , OI KENJI
IPC分类号： B23K9/18 , B23K103/04
摘要： PROBLEM TO BE SOLVED: To provide a submerged arc welding method of a steel material which is favorably used for the welding of a steel tube of large diameter such as a UOE steel tube and a spiral steel tube.
SOLUTION: When executing the submerged arc welding of a steel material from inner and outer sides, the welding condition is set so that the sum of the inner surface weld metal sectional area and the outer surface weld metal sectional area satisfies the inequality (1) 0.28≤(S
1 +S
2 )/t
2 , and further satisfies the inequalities (2) S
1 /t
2 ≤0.27 and (3) S
2 /t
2 ≤0.29 [wherein t denotes the thickness (mm) of the steel material; S
1 denotes the inner surface weld metal sectional area (mm
2 ), except that of a portion overlapping an outer surface weld metal after the welding the outer side; and S
2 denotes the outer surface weld metal sectional area (mm
2 )].
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种有利地用于焊接诸如UOE钢管和螺旋钢管的大直径钢管的钢材的埋弧焊接方法。解决方案：当从内侧和外侧执行钢材的埋弧焊时，设定焊接条件使得内表面焊接金属截面积和外表面焊接金属截面积之和满足不等式（ 1）0.28≤（S 1 + S 2 / SP>），进一步满足不等式（2）S /SB>/t2≤0.27和（3）S 2 / t 2 ≤0.29[其中t表示钢材; S 1 表示内表面焊接金属截面积（mm 2 ），除了在外侧焊接外表面焊接金属重叠部分之后; S 2 表示外表面焊接金属截面积（mm 2 ）]。版权所有（C）2010，JPO＆INPIT

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