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1. 发明专利

JP2006205183A Multi-layer welding structure of stainless steel 审中-公开
标题翻译：不锈钢多层焊接结构
公开(公告)号：JP2006205183A
公开(公告)日：2006-08-10
申请号：JP2005017178
申请日：2005-01-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： RA SHOGUN , KOIDE HIROO , HANEDA MITSUAKI , IMANAGA AKIYOSHI , OBANA TAKESHI
IPC分类号： B23K9/23 , B23K9/167 , B23K9/173 , B23K103/04
摘要： PROBLEM TO BE SOLVED: To provide a multi-layer welding structure of a stainless steel capable of performing the multi-layer welding from the initial layer back-bead welding of a groove bottom part to the final layer welding of a groove upper face part on a groove joint of a thick plate, and changing the tensile stress residual in a weld portion on a back face side after completion of welding to the compressive stress. SOLUTION: In the multi-layer welding structure of a stainless steel in which joint members 1, 2 with an end of the stainless steel grooved butted to each other, a welding wire is melted to form a multi-layer welded portion by the pulse arc welding or the DC arc welding of the consumable electrode type or a non-consumable electrode type, and the joint members are welded to each other, an austenitic welding wire is melted and solidified to the height of 1/5 to 4/5 of the thickness of the joint member from the back side of the groove to form an initial back-bead weld part, a martensitic welding wire is melted and solidified to an upper face of the groove to provide compressive stresses in a weld part on the groove back face side and in a vicinity thereof. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供能够进行多层焊接的多层焊接结构，从槽底部的初始层回珠焊接到槽上部的最终层焊接面对部分在厚板的槽接头上，并且在焊接完成之后将背面侧的焊接部分中的拉伸应力残余变化为压缩应力。解决方案：在不锈钢的多层焊接结构中，其中不锈钢端部彼此对接的接合构件1,2将焊丝熔化以形成多层焊接部分，由可消耗电极型或非消耗性电极型的脉冲电弧焊接或直流电弧焊接，接合部件彼此焊接，使奥氏体焊丝熔化固化至1/5〜4 / 5，从槽的背面形成接合构件的厚度，以形成初始的后珠焊接部，马氏体焊丝熔化并固化到槽的上表面，从而在焊接部上形成压应力凹槽背面侧及其附近。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2008055462A Method for producing welding joint 审中-公开
标题翻译：生产焊接接头的方法
公开(公告)号：JP2008055462A
公开(公告)日：2008-03-13
申请号：JP2006234854
申请日：2006-08-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OBATA KYOJI , ANZAI HIDEYA , KOIDE HIROO , RA SHOGUN , KATO MITSUO
IPC分类号： B23K35/30 , B23K9/167
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a highly reliable welding joint, regarding the production of a weld zone in a structure, in which welding defects such as a penetration fault are suppressed, and further, the weld zone has excellent material properties such as stress corrosion crack resistance.
SOLUTION: In the method for producing a welding joint by welding metal members, the material component of a welding wire used upon the welding of the metal members is controlled so that the content of sulfur (S) is 0.004 to 0.010%, and also, the content of ferrite based upon a dilong chart is 10 to 15%. According to this invention, regarding welding joint production in a welded structure including piping or the like, the method for producing a highly reliable welding joint using a TIG welding wire for an initial layer in which welding defects such as a penetration fault are suppressed, and further having excellent stress corrosion crack resistance can be provided.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种用于制造高可靠性焊接接头的方法，关于在抑制诸如穿透断层等焊接缺陷的结构中的焊接区域的制造，此外，焊接区域优异的材料性能如应力腐蚀开裂性。解决方案：在通过焊接金属构件制造焊接接头的方法中，控制在金属构件的焊接时使用的焊丝的材料成分，使得硫（S）的含量为0.004〜0.010％并且基于稀释图表的铁素体的含量为10〜15％。根据本发明，关于包括管道等的焊接结构中的焊接接头生产，使用抑制诸如穿透断层等焊接缺陷的初始层的TIG焊丝生产高可靠性焊接接头的方法，以及进一步具有优异的耐应力腐蚀开裂性。版权所有（C）2008，JPO＆INPIT

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