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1. 发明专利

PH12018502635A1 WELDED STRUCTURE HAVING EXCELLENT BRITTLE CRACK ARRESTABILITY 未知
公开(公告)号：PH12018502635A1
公开(公告)日：2019-10-07
申请号：PH12018502635
申请日：2018-12-13
申请人： JFE STEEL CORP , JAPAN MARINE UNITED CORP
发明人： HANDA TSUNEHISA , IGI SATOSHI , OI KENJI , TOYODA MASANOBU , KIJI NOBORU
IPC分类号： B23K31/00 , B23K9/00 , B23K9/02 , B63B9/06
摘要： This welded structure is provided with a doubler member (10) disposed at the abutment of a web (1) and a flange (2). The web end surface is abutted against the doubler member surface, the web and the doubler member are joined by fillet welding; the flange surface and doubler member surface are placed overlapping each other and the doubler member is joined with fillet welding. At that time, the relation between the width, in the joint cross section, of the unwelded portion of the overlapping surface of the fillet welded joint, the ratio Y( pcnt ) of the doubler member plate width and the sum of the leg lengths of the left and right fillet welded portions, and the brittle crack arrest toughness (Kca)T(N/mm3/2) of the doubler member at the service temperature (øC) is adjusted to satisfy Y( pcnt ) # {6900-Kca}/85. Thusly, it is possible to prevent and stop propagation of brittle cracks occurring from the flange by means of the doubler member.

2. 发明专利

PH12018550204A1 WELDED STRUCTURE HAVING EXCELLENT BRITTLE CRACK ARRESTABILITY 未知
公开(公告)号：PH12018550204A1
公开(公告)日：2019-10-21
申请号：PH12018550204
申请日：2018-12-11
申请人： JAPAN MARINE UNITED CORP , JFE STEEL CORP
发明人： HANDA TSUNEHISA , IGI SATOSHI , OI KENJI , TOYODA MASANOBU , KIJI NOBORU
IPC分类号： B23K31/00 , B23K9/00 , B23K9/02 , B63B9/06
摘要： A doubler member has a td/Wd ratio, of plate thickness td to plate width Wd, of less than 2, and said doubler member is overlaid on and joined by fillet bonding to the surface of a member to be joined that has a plate thickness of greater than or equal to 50mm, and furthermore, a bonding member is bonded by welding to the surface of the fillet-welded doubler member, resulting in a welded structure. On the surface of overlap between the surface of the doubler member and the surface of the member to be joined, an unwelded portion is formed which, in the joint cross section, is 95 pcnt or more than the plate thickness td of the doubler member. Further, the fillet welding condition is adjusted, and the toughness of the weld metal is adjusted such that the fracture appearance transition temperature vTrs (øC) of the fillet weld metal varies according to the fillet weld leg length L and, in relation with the plate thickness tf of the member to be joined, satisfies vTrs = -5L + 65 - 1.5(tf-75) ... (1b) if L =20mm, and satisfies vTrs = -35 - 1.5(tf - 75) ... (1c) if L [ 20mm. Hereby, the fillet weld metal part makes it possible to arrest propagation of brittle cracks occurring from the member to be bonded or the bonding member, and it is possible to provide a welded structure which has excellent brittle crack arrest characteristics and is suitable for use in a hull structure.

3. 发明专利

PH12017550088B1 WELDED STRUCTURE 未知
公开(公告)号：PH12017550088B1
公开(公告)日：2018-02-12
申请号：PH12017550088
申请日：2017-08-30
申请人： JFE STEEL CORP , JAPAN MARINE UNITED CORP
发明人： HANDA TSUNEHISA , IGI SATOSHI , OI KENJI , TOYODA MASANOBU , KIJI NOBORU , WATANABE SEITA
IPC分类号： B23K31/00 , B23K9/00 , B23K9/02
摘要： A welded structure provided with a fillet welded joint in which an end face of a joining member (1) is butted against a front face of a joined member (2) having a plate-thickness of 50 mm or more, the joining member (1) and the joined member (2) being joined by the fillet weld joint, where a weld leg length (3) and a welding width (13) of the fillet weld joint are more than 16 mm; an unwelded portion (4) is included at a butting face between the end face of joining member (1) and the front face of the joined member (2) in the fillet weld joint, the unwelded portion (4) being 95 pcnt or more of a plate thickness (tw) of the joining member (1) in a cross section of the fillet weld joint; and further, for a fillet weld metal (5) in the fillet welded joint, a Charpy impact test fracture appearance transition temperature (vTrs (øC)) of the fillet weld metal (5) and a plate thickness (tf) of the joined member (2), and optionally the smaller value (L) of the weld leg length (3) and the welding width (13), satisfy a predetermined relationship.

4. 发明专利

PH12017550088A1 WELDED STRUCTURE 未知
公开(公告)号：PH12017550088A1
公开(公告)日：2018-02-12
申请号：PH12017550088
申请日：2017-08-30
申请人： JAPAN MARINE UNITED CORP , JFE STEEL CORP
发明人： HANDA TSUNEHISA , IGI SATOSHI , OI KENJI , TOYODA MASANOBU , KIJI NOBORU , WATANABE SEITA
IPC分类号： B23K31/00 , B23K9/00 , B23K9/02 , B63B9/06
摘要： This welded structure comprises a fillet welded joint which joins a joining member (1) and a joined member (2) having a plate-thickness of 50 mm or larger, in which an end face of the joining member (1) is in contact with a surface of the joined member (2). The weld leg length (3) and the welding width (13) of the fillet welded joint are each larger than 16 mm. A surface of the fillet welded joint at which the end face of the joining member (1) is in contact with the surface of the joined member (2) includes a non-welded part (4) at which the cross section of the fillet welded joint is not smaller than 95 pcnt of the plate-thickness (tw) of the joining member (1). Further, regarding a fillet welded metal (5) of the fillet welded joint, a predetermined relationship is satisfied between the Charpy impact test fracture transition temperature (vTrs (oC)) of the fillet welded metal (5) and the plate-thickness (tf) of the joined member (2), or among the temperature (vTrs (oC)), the thickness (tf), and a value (L) which is the lower between the weld leg length (3) and the welding width (13).

5. 发明公开

KR20180031047A 수직 방향 협개선 가스 실드 아크 용접 방법 审中-公开
标题翻译：垂直窄间隙气保焊电弧焊方法
公开(公告)号：KR20180031047A
公开(公告)日：2018-03-27
申请号：KR20187006625
申请日：2016-11-24
申请人： JFE STEEL CORP
发明人： HAYAKAWA NAOYA , OI KENJI , KOZUKI SHOHEI
IPC分类号： B23K9/173 , B23K33/00 , B23K35/30
CPC分类号： B23K9/16 , B23K9/173 , B23K33/00 , B23K35/30
摘要： 초층용접조건, 특히용접토치각도나용접입열량, 위빙조건을적정하게제어하여, 초층용접에있어서의접합깊이를 20 ㎜이상 65 ㎜이하로함과함께, 최종층용접시에, 후강재에용접토치측으로부터후강재의개선의커버링재로서상진방향으로슬라이딩이동이가능한냉각판을대고, 용접토치상진이동에맞춰냉각판을상진이동시키면서용접을실시한다.
摘要翻译：在本发明中，适当地控制初始层焊接条件，特别是焊炬角度，焊接热量输入和编织标准，以在初始层焊中实现20-65mm的焊接深度，并且在最终层焊接中，在从焊炬侧向厚壁钢材上推压能够向上滑动的冷却板的同时进行焊接，作为厚钢材之间的间隙的覆盖材料，并且使焊炬向上移动而向上移动冷却板。

6. 发明公开

KR20180021893A 수직 방향 협개선 가스 실드 아크 용접 방법 审中-公开
标题翻译：垂直窄沟气体保护焊接方法
公开(公告)号：KR20180021893A
公开(公告)日：2018-03-05
申请号：KR20187003061
申请日：2016-09-07
申请人： JFE STEEL CORP
发明人： KATAOKA TOKIHIKO , HAYAKAWA NAOYA , OI KENJI
IPC分类号： B23K9/173 , B23K33/00
CPC分类号： B23K9/173 , B23K33/00 , B23K35/30
摘要： 소정의개선조건으로서, 판두께: 10㎜이상 2매의후강재(1)를, 위빙을이용하는일층용접또는다층용접에의해접합하는수직방향협개선가스실드아크용접방법에있어서, 굽힘부와이 굽힘부에의해획정되는선단부를구비하는용접토치(4)를이용하여, 초증용접위빙을행하는것으로하고, 그때, 후강재의개선면(2)에대한위빙시에, 소정의조건에서용접토치의선단부를후강재의개선면을향하게하여요동시킨다.
摘要翻译：在通过单层焊接或者使用编织的多层焊接将作为规定的槽状态的板厚10mm以上的两种厚钢材（1）进行纵向窄槽气体保护电弧焊接的方法中，使用具有弯曲部分和由弯曲部分限定的尖端部分的焊炬（4）进行单层焊接，其中，在对厚钢材的凹槽表面（2）进行编织时，焊炬在预定条件下朝向厚钢材的凹槽表面摆动。

7. 发明公开

KR20180031046A 수직 방향 협개선 가스 실드 아크 용접 방법 审中-公开
标题翻译：垂直变窄改进气体保护弧焊方法
公开(公告)号：KR20180031046A
公开(公告)日：2018-03-27
申请号：KR20187006624
申请日：2016-11-25
申请人： JFE STEEL CORP
发明人： KOZUKI SHOHEI , HAYAKAWA NAOYA , OI KENJI
IPC分类号： B23K9/02 , B23K9/173 , B23K33/00 , B23K35/30
CPC分类号： B23K9/02 , B23K9/173 , B23K33/00 , B23K35/30
摘要： 용접와이어로서, REM 을 0.015 ∼ 0.100 질량% 함유하고, 또한 Se 및 Te 중에서선택한 1 종또는 2 종을합계로 0.005 ∼ 0.100 질량% 함유하는용접와이어를사용하여, 초층용접조건, 특히용접토치각도나용접입열량모두, 위빙조건을적정하게제어한다.
摘要翻译：作为焊丝，优选含有总量为0.005〜0.100质量％的REM和0.015〜0.100质量％的选自Se和Te中的1种或2种的焊丝，焊接热输入和编织条件都得到适当控制。

8. 发明申请

WO2014088111A8 NARROW-GROOVE GAS-SHIELDED ARC WELDED JOINT 审中-公开
标题翻译： NARROW-GROOVE气体保护焊接接头
公开(公告)号：WO2014088111A8
公开(公告)日：2015-06-18
申请号：PCT/JP2013082899
申请日：2013-12-03
申请人： JFE STEEL CORP
发明人： KATAOKA TOKIHIKO , SUMI HIROYUKI , KITANI YASUSHI , OI KENJI , YASUDA KOICHI
IPC分类号： B23K9/173 , B23K9/16 , B23K35/30
CPC分类号： B23K9/173 , B23K9/0213 , B23K9/16 , B23K35/30 , B23K35/3053 , B23K35/383 , B23K2201/006
摘要： In this welded joint obtained by means of a multilayer buildup of narrow-groove gas-shielded arc welds at thick steel members having a plate thickness of at least 22 mm, the weld depth at the bottom of the thick steel members is at least 1.5 mm, and furthermore the total amount of oxygen (O) and sulfur (S) contained in the welded metal is caused to be in the range of 400-1000 mass ppm inclusive.
摘要翻译：在通过在具有至少22mm的板厚度的厚钢构件上的窄槽气体保护电弧焊的多层堆积获得的焊接接头中，厚钢构件底部的焊接深度至少为1.5mm ，并且焊接金属中含有的氧（O）和硫（S）的总量也在400-1000质量ppm的范围内。

9. 发明申请

WO2014088110A8 METHOD FOR NARROW-GROOVE GAS-SHIELDED ARC WELDING 审中-公开
标题翻译：氮气气体保护弧焊的方法
公开(公告)号：WO2014088110A8
公开(公告)日：2015-06-18
申请号：PCT/JP2013082898
申请日：2013-12-03
申请人： JFE STEEL CORP
发明人： KATAOKA TOKIHIKO , SUMI HIROYUKI , KITANI YASUSHI , OI KENJI , YASUDA KOICHI
IPC分类号： B23K9/173 , B23K9/16 , B23K33/00
CPC分类号： B23K9/0213 , B23K9/16 , B23K9/173 , B23K33/00
摘要： In this method that is for gas-shielded arc welding and that joins thick steel members having a plate thickness of at least 22 mm by means of narrow-groove multilayer welding with a bottom groove angle of no greater than 10° and a bottom groove gap of 7-15 mm inclusive, there are at least two root passes, each pass being divided among both sides of the bottom groove gap, and furthermore, by means of controlling the supply angle of welding wire supplied from an electricity supply tip at the tip of a welding torch to the range of 5-15° inclusive with respect to a normal line, the melting depth at the bottom of the thick steel members is at least 1.5 mm.
摘要翻译：在这种用于气体保护电弧焊的方法中，通过窄槽多角度焊接而形成板厚度至少为22mm的厚钢构件，底部沟槽角度不大于10°，底部沟槽间隙为7-15mm以上，至少有两根通路，每个通道在底槽间隙的两侧分开，此外，通过控制从尖端处的供电端提供的焊丝的供给角度的焊枪相对于法线为5-15°的范围，厚钢构件底部的熔化深度为至少1.5mm。

10. 发明申请

WO2016002171A8 METHOD OF BUTT WELDING STEEL PLATES AND BUTT WELD JOINT OF STEEL PLATES 审中-公开
标题翻译：焊接钢板的方法和钢板的焊接接头
公开(公告)号：WO2016002171A8
公开(公告)日：2016-12-01
申请号：PCT/JP2015003203
申请日：2015-06-25
申请人： JFE STEEL CORP
发明人： KOZUKI SHOHEI , HAYAKAWA NAOYA , OI KENJI
IPC分类号： B23K28/02 , B23K9/18 , B23K26/21 , C22C38/00 , C22C38/14
CPC分类号： B23K9/18 , B23K26/21 , B23K28/02 , C22C38/00 , C22C38/14
摘要： A method of butt welding steel plates, said method comprising: butting two steel plates (1) and forming a Y-shaped groove provided with an opening (2) in the upper part and a root face (3) in the lower part; welding the opening (2) of the Y-shaped groove by submerged arc welding to form a submerged arc welded metal (4) which contains 0.030-0.100 mass% of Ti and 0.0030-0.0080 mass% of B and in which the ratio [%Al]/[%O] [wherein [%Al] stands for the content (mass%) of Al and [%O] stands for the content (mass%) of O] is in the range of 0.5-1.2; and then welding the root face (3) of the Y-shaped groove by laser welding to form a laser welded metal (5) so that said laser welded metal (5) intrudes into said submerged arc welded metal (4).
摘要翻译：一种对接钢板的方法，所述方法包括：对接两个钢板（1）并在上部形成设置有开口（2）的Y形槽和下部的根面（3）; 通过埋弧焊将Y形槽的开口（2）焊接形成含有0.030-0.100质量％的Ti和0.0030-0.0080质量％的B的埋弧焊接金属（4），其中[％ Al] / [％O] [其中[％Al]表示Al的含量（质量％），[％O]表示O]的含量（质量％）在0.5-1.2的范围内; 然后通过激光焊接焊接Y形槽的根面（3），形成激光焊接金属（5），使得所述激光焊接金属（5）侵入所述埋弧焊接金属（4）。

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