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1. 发明授权

EP2402106B1 METHOD OF AND MACHINE FOR ARC WELDING COMBINING GAS-SHIELD ARC WELDING WITH SUBMERGED ARC WELDING 有权
标题翻译：焊接机电弧焊和堆焊的组合
公开(公告)号：EP2402106B1
公开(公告)日：2017-05-03
申请号：EP10746369
申请日：2010-02-25
申请人： JFE STEEL CORP
发明人： HAYAKAWA NAOYA , OI KENJI , ISHIGAMI ATSUSHI , SHIMADA KENJI , ODAKA MASAHIRO
IPC分类号： B23K9/16 , B23K9/025 , B23K9/09 , B23K9/173 , B23K9/18 , B23K28/02 , B23K33/00 , B23K103/04
CPC分类号： B23K9/1735 , B23K9/025 , B23K9/09 , B23K9/188 , B23K28/02 , B23K33/004 , B23K2201/18 , B23K2203/04

2. 发明公开

EP2255915A4 SUBMERGED ARC WELDING METHOD WITH MULTIPLE ELECTRODES FOR STEEL MATERIAL 有权
标题翻译：麻醉师麻醉师ELEKTRODENFÜRSTAHLMATERIAL
公开(公告)号：EP2255915A4
公开(公告)日：2014-08-13
申请号：EP09713534
申请日：2009-02-19
申请人： JFE STEEL CORP
发明人： ISHIGAMI ATSUSHI , OI KENJI , HAYAKAWA NAOYA
IPC分类号： B23K9/18 , B23K9/00 , B23K9/025 , B23K9/032 , B23K101/06
CPC分类号： B23K9/188 , B23K9/0253 , B23K9/0282 , B23K2201/06 , B23K2203/04
摘要： Provided is a multiple-electrode submerged arc welding method, for steel, suitable for welding in the manufacture of large-diameter steel pipes, such as UOE steel pipes or spiral steel pipes, formed of base materials ranging in thickness from 10 to 50 mm. Specifically, steel is subjected to multiple-electrode submerged arc welding with three or more electrodes in which a direct-current power source is used to supply current to a first electrode, the welding by the first electrode is carried out at a current density of 250 A/mm 2 or more, preferably with a wire diameter of 3.2 mm or less and a weld current of 1,000 A or more, the welding by the second electrode is carried out at a current density of 150 A/mm 2 or more, preferably with a weld current of 600 A or more, one of the interelectrode spacings is 23 mm or more on a surface of the steel, and the remaining interelectrode spacings are 20 mm or less.
摘要翻译：本发明提供一种多电极埋弧焊接方法，适用于制造厚度为10〜50mm的基材的UOE钢管或螺旋钢管等大口径钢管的焊接。具体地说，将钢用三电极或多层电极进行多电极埋弧焊，其中使用直流电源向第一电极供电，第一电极的焊接以250的电流密度进行 A / mm 2以上，优选线径为3.2mm以下，焊接电流为1000A以上，第二电极的焊接以150A / mm 2以上的电流密度进行，优选在焊接电流为600A以上的情况下，电极表面之间的电极间间隔为23mm以上，其余的电极间间隔为20mm以下。

3. 发明公开

EP2786830A4 SUBMERGED ARC WELDING METHOD FOR STEEL SHEETS 有权
标题翻译： UP焊接工艺钢板
公开(公告)号：EP2786830A4
公开(公告)日：2016-04-20
申请号：EP12853275
申请日：2012-11-28
申请人： JFE STEEL CORP
发明人： ISHIGAMI ATSUSHI , HAYAKAWA NAOYA , YANO KOJI
IPC分类号： B23K9/18 , B23K33/00
CPC分类号： B23K9/188 , B23K33/006 , B23K2201/06 , B23K2203/04
摘要： The present invention provides a submerged arc welding method capable of an attempt to enhance toughness of a welded zone with low heat input and an attempt to decrease a weld reinforcement height by suppressing excessive melting of a wire, and capable of achieving a deep depth of penetration and a wide bead width. In the submerged arc welding method, a first electrode at the head in a welding direction has a wire diameter of 2.0 to 3.2 mm and a current density of 145 A/mm 2 or more, second and subsequent electrodes are arranged behind the first electrode in a line, and a groove formed in a steel plate has a two-step groove shape satisfying ¸ B

4. 发明公开

EP2786829A4 SUBMERGED ARC WELDING METHOD FOR STEEL SHEETS 有权
标题翻译： UP焊接工艺钢板
公开(公告)号：EP2786829A4
公开(公告)日：2015-07-15
申请号：EP12853232
申请日：2012-11-28
申请人： JFE STEEL CORP
发明人： ISHIGAMI ATSUSHI , HAYAKAWA NAOYA , YANO KOJI
IPC分类号： B23K9/18
CPC分类号： B23K9/188 , B23K9/23 , B23K33/006 , B23K2201/06 , B23K2203/04

5. 发明公开

EP2402106A4 COMPLEX METHOD OF WELDING INCOMBINATION OF GAS-SHIELD ARK WELDING WITH SUBMERGED ARK WELDING 有权
标题翻译： KOMPLEXES SCHWEISSVERFAHREN MIT EINER KOMNBINATION AUS SCHUTZGASSCHWISSEN UND UP SCHWEISSEN
公开(公告)号：EP2402106A4
公开(公告)日：2015-02-11
申请号：EP10746369
申请日：2010-02-25
申请人： JFE STEEL CORP
发明人： HAYAKAWA NAOYA , OI KENJI , ISHIGAMI ATSUSHI , SHIMADA KENJI , ODAKA MASAHIRO
IPC分类号： B23K9/16 , B23K9/025 , B23K9/09 , B23K9/173 , B23K9/18 , B23K28/02 , B23K33/00 , B23K103/04
CPC分类号： B23K9/1735 , B23K9/025 , B23K9/09 , B23K9/188 , B23K28/02 , B23K33/004 , B23K2201/18 , B23K2203/04

6. 发明公开

EP2883643A4 SUBMERGED ARC WELDING METHOD, WELD JOINT FORMED BY THE WELDING METHOD, AND STEEL PIPE OR TUBE HAVING THE WELD JOINT 有权
标题翻译： IN IN与焊接这种焊接形焊接与钢管粉末焊接
公开(公告)号：EP2883643A4
公开(公告)日：2016-05-04
申请号：EP13828082
申请日：2013-05-24
申请人： JFE STEEL CORP
发明人： KOZUKI SHOHEI , ISHIGAMI ATSUSHI , HAYAKAWA NAOYA
IPC分类号： B23K9/18 , B23K33/00
CPC分类号： B23K33/004 , B23K9/18

7. 发明公开

EP2436472A4 SUBMERGED ARC WELDING METHOD FOR STEEL PLATE 有权
标题翻译： UP焊接工艺钢板
公开(公告)号：EP2436472A4
公开(公告)日：2015-05-27
申请号：EP09845247
申请日：2009-09-04
申请人： JFE STEEL CORP
发明人： ISHIGAMI ATSUSHI , OI KENJI , HAYAKAWA NAOYA
IPC分类号： B23K9/18 , B23K9/025 , B23K101/06
CPC分类号： B23K9/18 , B23K9/0253 , B23K33/006 , B23K2201/06 , B23K2201/10 , B23K2203/04
摘要： Provided is a submerged arc welding method for a steel plate which is preferably used in making and welding a large diameter pipe such as a UOE steel pipe or a spiral steel pipe. As specific means, in welding the steel plate from an internal surface or an external surface by a submerged arc welding, welding condition is set such that, a cross-sectional area of internal weld metal S 1 and a cross-sectional area of external weld metal S 2 satisfy the formula (1), the formula (2), and the formula (3), that is, 0.40‰¤(S1+S2)/t 2 ‰¤0.80 ...... (1), S 1 /t 2 ‰¤0.35 ...... (2), and S 2 /t 2 ‰¤0.45 ...... (3), wherein t: a plate thickness of the steel plate (mm), S 1 : a cross-sectional area of the internal weld metal (mm 2 ) excluding the cross-sectional area of a portion of the internal weld metal overlapping with the external weld metal after external welding, and S 2 : a cross-sectional area of the external weld metal (mm 2 ).

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