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1. 发明专利

JP2005279767A Lime-based covered electrode, welding method and welded joint 审中-公开
标题翻译：基于极限覆盖电极，焊接方法和焊接接头
公开(公告)号：JP2005279767A
公开(公告)日：2005-10-13
申请号：JP2004101563
申请日：2004-03-30
申请人： Jfe Steel Kk , Jfeスチール株式会社 , Kawatetsu Techno Res Corp , National Institute For Materials Science , Nippon Welding Rod Kk , 川鉄テクノリサーチ株式会社 , 日本ウエルディング・ロッド株式会社 , 独立行政法人物質・材料研究機構
发明人： HAYAKAWA NAOYA , SATO HIROTERU , HIRAOKA KAZUO , NAKAMURA TERUMI , MORIKAGE YASUSHI , KUBO TAKAHIRO , YASUDA KOICHI , SAITO TEIICHIRO , ITO TADASHI , YOSHIDA MASAYA
IPC分类号： B23K9/23 , B23K35/365 , B23K103/04 , C22C38/00 , C22C38/40 , C22C38/48
摘要： PROBLEM TO BE SOLVED: To obtain an excellently shaped weld bead even in a state as-welded, to improve soundness of a welded joint by suppressing occurrence of welding defects such as lack of fusion without performing grinding, and also to greatly enhance fatigue strength of a welded joint through a smooth weld bead and suppressed undercut.
SOLUTION: A covered electrode is used in which an alloy core wire is coated with a coating flux in which CaF
2 has such a particle distribution that the amount of particles of 30 mass% and the mass ratio (CaCO
3 /CaF
2 ) of CaCO
3 to CaF
2 is 0.4-7.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了获得即使在焊接状态下的良好的形状的焊缝，通过抑制焊接缺陷的发生（如不进行研磨）也可以提高焊接接头的良好性，并且还大大提高焊接接头通过光滑焊缝的疲劳强度和抑制底切。
解决方案：使用覆盖电极，其中合金芯线涂覆有涂层焊剂，其中CaF 2 具有这样的颗粒分布，使得<105μm的颗粒的数量≤30 质量％，105-1,680μm的颗粒的量为> 30质量％，CaCO 3的质量比（CaCO 3 / CaF 2 SB>至CaF 2 为0.4-7。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2005279768A Flux cored wire for welding and weld joint for steel structure 审中-公开
标题翻译：用于焊接和焊接接头的钢丝绳用于钢结构
公开(公告)号：JP2005279768A
公开(公告)日：2005-10-13
申请号：JP2004101564
申请日：2004-03-30
申请人： Jfe Steel Kk , Jfeスチール株式会社 , National Institute For Materials Science , Nippon Welding Rod Kk , 日本ウエルディング・ロッド株式会社 , 独立行政法人物質・材料研究機構
发明人： NAKAMURA TERUMI , HIRAOKA KAZUO , HAYAKAWA NAOYA , SAITO TEIICHIRO , ITO TADASHI , YOSHIDA MASAYA , MORIKAGE YASUSHI , KUBO TAKAHIRO , YASUDA KOICHI
IPC分类号： B23K9/173 , B23K9/00 , B23K9/23 , B23K35/30 , B23K35/368 , B23K103/04 , C22C38/00 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To enhance crack resistance and weldability of stainless steel and also to improve fatigue strength and crack resistance in manufacturing a large structure such as a ship and a bridge by lowering martensitic transformation temperature of weld metal and reducing or eliminating residual tensile stress.
SOLUTION: In the flux cored wire in which a flux powder is filled inside a tubular metallic jacket made of stainless steel, the flux cored wire to use is designed to contain 6.5-25 mass % flux powder in the wire weight, wherein the quantity of metallic powder in the flux powder is 0.3-10 mass % in the wire weight, and wherein 3.5-15 mass % metal other than the powder in the wire weight is contained together with the flux powder inside the metallic jacket.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提高不锈钢的抗裂纹性和焊接性，并且通过降低焊接金属的马氏体相变温度并减少或消除来制造诸如船舶和桥梁等大型结构的疲劳强度和抗裂纹性，残余拉伸应力。解决方案：在焊剂粉末填充在由不锈钢制成的管状金属护套内的药芯焊丝中，使用的药芯焊丝被设计为含有6.5-25质量％的焊丝重量的助焊剂粉末，其中焊剂粉末中的金属粉末的量在线重量为0.3〜10质量％，其中除了金属丝重量以外的粉末中含有3.5-15质量％的金属以及金属护套内的焊剂粉末。版权所有（C）2006，JPO＆NCIPI

3. 发明专利

JP2005262258A Welding material 审中-公开
标题翻译：焊接材料
公开(公告)号：JP2005262258A
公开(公告)日：2005-09-29
申请号：JP2004077024
申请日：2004-03-17
申请人： Jfe Steel Kk , Jfeスチール株式会社 , National Institute For Materials Science , 独立行政法人物質・材料研究機構
发明人： MORIKAGE YASUSHI , YASUDA KOICHI , KUBO TAKAHIRO , HIRAOKA KAZUO , HAYAKAWA NAOYA , NAKAMURA TERUMI
IPC分类号： B23K35/30 , C22C38/00
摘要： PROBLEM TO BE SOLVED: To provide a welding material which makes an improvement in the fatigue strength of a welded joint without the occurrence of the break of welding and an improvement in the toughness of weld metal compatible with each other.
SOLUTION: The welding material comprises a flux wire utilized for the welded joint for the steel structure manufactured by welding the low-alloy steel products. The deposited metal formed by the welding material contains ≤0.20mass% C,
摘要翻译：要解决的问题：提供一种能够提高焊接接头的疲劳强度的焊接材料，而不发生焊接断裂和提高彼此相容的焊接金属的韧性。
解决方案：焊接材料包括用于通过焊接低合金钢产品制造的钢结构焊接接头的焊剂丝。由焊接材料形成的沉积金属含有≤0.20质量％的C，<6.0质量％的Cr，≥4.0〜≤25.0质量％的Ni，≤5.0质量％的Si。 ≤10.0质量％Mn，≤0.015质量％P，≤0.007质量％S，≤3.0质量％Nb，进一步含有≤4.0质量％Mo和≤0.5质量％Ca中的至少一种，并且由余量的沉积金属铁和不可避免的杂质。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2005028372A Welding material and welded joint for steel structure 审中-公开
标题翻译：焊接材料和焊接接头钢结构
公开(公告)号：JP2005028372A
公开(公告)日：2005-02-03
申请号：JP2003193638
申请日：2003-07-08
申请人： Jfe Steel Kk , Jfeスチール株式会社 , National Institute For Materials Science , 独立行政法人物質・材料研究機構
发明人： MORIKAGE YASUSHI , YASUDA KOICHI , KUBO TAKAHIRO , HIRAOKA KAZUO , HAYAKAWA NAOYA , NAKAMURA TERUMI
IPC分类号： B23K9/173 , B23K9/23 , B23K35/30
摘要： PROBLEM TO BE SOLVED: To provide a welding material which improves fatigue strength of a welded joint and toughness of a weld metal compatibly without the occurrence of weld cracks.
SOLUTION: The welding material, which is used for the welded joint of a steel structure manufactured by welding a steel material, is made to a flux cored wire. The composition of a deposit metal formed with the welding material is composed of ≤0.20 mass% of C, 6.0-21.0 mass% of Cr, 4.0-20.0 mass% of Ni, ≤5.0 mass% of Si, ≤10.0 mass% of Mn, ≤0.020 mass% of P, 0.010 mass% of S, ≤4.0 mass% of Mo, ≤3.0 mass% of Nb, ≤0.5 mass% of Ca, the balance Fe and an inevitable component.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够提高焊接接头的疲劳强度和焊接金属的韧性的焊接材料，而不会发生焊缝裂纹。解决方案：将用于焊接钢材的钢结构的焊接接头所使用的焊接材料制成药芯焊丝。由焊接材料形成的沉积金属的组成由C：0.20质量％，Cr：6.0-21.0质量％，Ni：4.0〜20.0质量％，Si：5.0质量％，Mn：1.0质量％，P：0.020质量％，S：4.0质量％，Nb：3.0质量％，Ca：0.5质量％，Fe：不可避免成分。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2004025304A Weld joint and welding material for steel structure 有权
公开(公告)号：JP2004025304A
公开(公告)日：2004-01-29
申请号：JP2003073969
申请日：2003-03-18
申请人： Jfe Steel Kk , Jfeスチール株式会社 , National Institute For Materials Science , 独立行政法人物質・材料研究機構
发明人： MORIKAGE YASUSHI , YASUDA KOICHI , KUBO TAKAHIRO , AMANO KENICHI , HIRAOKA KAZUO , HAYAKAWA NAOYA
IPC分类号： B23K31/00 , B23K9/00 , B23K35/30
摘要： PROBLEM TO BE SOLVED: To provide a weld joint and a welding material for a steel structur in which improvement of fatigue strength in the weld joint and improvement of toughness in the welding metal are compatible with each other without causing weld cracks.
SOLUTION: In the weld joint for the steel structure which is manufactured by welding steel materials, the martensitic transformation starting temperature is set at not higher than 200°C and not lower than 50°C for the welding metal of the weld joint, and also the retained austenite quantity in the welding metal is made not less than 5 volume % and not more than 70 volume %.
COPYRIGHT: (C)2004,JPO

6. 发明专利

JP2006305630A Manufacturing method of weld joint having excellent fatigue characteristic 审中-公开
标题翻译：具有优异疲劳特性的焊接接头的制造方法
公开(公告)号：JP2006305630A
公开(公告)日：2006-11-09
申请号：JP2006090589
申请日：2006-03-29
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： MORIKAGE YASUSHI
IPC分类号： B23K9/235 , B23K9/02 , B23K35/30 , C22C38/00 , C22C38/02
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method of a weld joint having excellent fatigue characteristics. SOLUTION: When manufacturing a weld joint, a part in which a bead toe is formed is estimated on a surface of a steel plate. A substance containing ≥ 30 mass% Si is applied on or fixed to the surface in advance so as to include at least the part, and the welding is performed thereafter. The fatigue characteristic is enhanced by (1) improving the toe shape, (2) ensuring the characteristics of the weld metal except the final pass, and (3) preventing the hardening by avoiding Si addition to a solid wire or the like. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供具有优异的疲劳特性的焊接接头的制造方法。
解决方案：在制造焊接接头时，在钢板的表面上估计形成有胎趾的部分。将含有≥30质量％Si的物质预先施加在表面上或固定在表面上，以便至少包括该部分，然后进行焊接。通过（1）提高趾部形状，（2）确保除了最终通过以外的焊接金属的特性，以及（3）通过避免Si添加到实心线等来防止硬化，从而增强疲劳特性。版权所有（C）2007，JPO＆INPIT

7. 发明专利

JP2008290115A Fillet welding method and fillet welded joint 有权
标题翻译：焊接方法和焊接接头焊接接头
公开(公告)号：JP2008290115A
公开(公告)日：2008-12-04
申请号：JP2007138231
申请日：2007-05-24
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： KATAOKA TOKIHIKO , MORIKAGE YASUSHI , KURIHARA YASUYUKI , KUBO TAKAHIRO , IKI SATOSHI , SADASUE TERUKI
IPC分类号： B23K9/02 , B23K9/00 , B23K9/173 , B23K35/30 , B23K103/04 , C22C38/00 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a fillet welding method for welding a steel floor plate of a bridge and a rib material to be used to reinforce the floor plate, by which method a nearly T shape fillet welded joint having excellent fatigue strength can be obtained using the gas shield arc welding method suitable for the fillet welded joint. SOLUTION: A nearly T shape fillet welded joint having a V shape bevel (a wedge shape gap) at the abutted portion of a flat plate 2 and a vertical plate 1 is welded under the following conditions so as to from an underside bead. (1) Welding method: straight polarity gas metal arc welding. (2) Shield gas: mixed gas composed of 60% or more of CO 2 , and the remainder composed of two or more gases of Ar, He, H 2 , and O 2 , or 100% of CO 2 gas. (3) Welding wire: solid wire. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于焊接用于加强地板的桥梁和肋材料的钢地板的焊脚焊接方法，通过该方法，具有优异的疲劳强度的近T形角焊接头可采用适用于角焊接头的气体保护电弧焊接法获得。解决方案：在以下条件下，在平板2和垂直板1的抵接部分处具有V形斜面（楔形间隙）的近T形角焊接头从下侧的焊道。（1）焊接方式：直极气体金属电弧焊。（2）保护气体：由60％以上的CO 2 组成的混合气体，其余由Ar，He，H 2 的两种或更多种气体组成，或<100％的CO 2 气体。（3）焊丝：实心线。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2007229781A Flux-cored wire 有权
标题翻译：通芯线
公开(公告)号：JP2007229781A
公开(公告)日：2007-09-13
申请号：JP2006056251
申请日：2006-03-02
申请人： Ihi Corp , Jfe Steel Kk , Jfeスチール株式会社 , Kobe Steel Ltd , 株式会社Ihi , 株式会社神戸製鋼所
发明人： MORIKAGE YASUSHI , KUBO TAKAHIRO , YASUDA KOICHI , KURIHARA MASAYOSHI , AMANO KENICHI , NAKANISHI YASUMASA , YUKI MASAHIRO , YAMAOKA HIROTO , INOSE KOTARO , KIJI NOBORU , MATSUSHITA YUKINOBU , MARUYAMA TOSHIHARU , WATANABE HIROHISA , SUZUKI MASAMICHI
IPC分类号： B23K35/30 , B23K35/362 , B23K35/368 , C22C38/00 , C22C38/04
摘要： PROBLEM TO BE SOLVED: To reduce welding deformation of materials to be welded when welding a steel structure.
SOLUTION: A weld metal contains ≤0.10% C, 9.0 to 15.00% Cr, 1.0 to 8.0% Ni, 0.2 to 0.8% Si, 1.0 to 2.0% Mn, and ≤0.5% Mo, is regulated to ≤0.1% Nb, ≤0.20% P, and ≤0.010% S, and consists of the balance Fe and inevitable impurities. Also, the following formula is satisfied: 150≤719-795[C]-35.55[Si]-13.25[Mn]-23.7[Cr]-26.5[Ni]-23.7[Mo]-11.85[Nb]≤390[Ni] eq=[Ni]+0.5[Mn]+30[C] [Cr] eq=[Cr]+1.5 [Si]+[Mo]+0.5[Nb] [Ni] eq-0.4[Cr] eq≤5.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了减少焊接钢结构时待焊接材料的焊接变形。
解决方案：焊接金属含有≤0.10％C，9.0〜15.00％Cr，1.0〜8.0％Ni，0.2〜0.8％Si，1.0〜2.0％Mn和≤0.5％Mo，调节为≤0.1％ Nb，≤0.20％P，≤0.010％S，余量为Fe和不可避免的杂质。另外，满足以下公式：150≤719-795[C] -35.55 [Si] -13.25 [Mn] -23.7 [Cr] -26.5 [Ni] -23.7 [Mo] -11.85 [Nb]≤390[Ni ] eq = [Ni] +0.5 [Mn] +30 [C] [Cr] eq = [Cr] +1.5 [Si] + [Mo] +0.5 [Nb] [Ni] eq-0.4 [Cr]eq≤5 。版权所有（C）2007，JPO＆INPIT

9. 发明专利

JP2004076156A Steel member having excellent fatigue crack propagation property and method for producing the same 有权
公开(公告)号：JP2004076156A
公开(公告)日：2004-03-11
申请号：JP2003173356
申请日：2003-06-18
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： KATAYAMA KOJI , MORIKAGE YASUSHI , NISHIMURA KIMIHIRO , KUBO TAKAHIRO , AMANO KENICHI
IPC分类号： C21D8/00 , C21D6/00 , C22C38/00 , C22C38/08 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel member in which a fatigue crack propagation velocity can effectively be reduced in a high ΔK region without depending on a crack propagating direction, and which has an excellent strength/toughness balance and excellent fatigue crack propagation properties, and to provide an advantageous method for producing the same.
SOLUTION: In the method for producing a steel member having excellent fatigue crack propagation properties, a steel slab comprising 0.01 to 0.40% C, 0.10 to 3.0% Si, 0.4 to 3.0% Mn, ≤0.05% P, ≤0.05% S, 0.3 to 2.0% Al and ≤0.015% N, or further comprising respectively prescribed amounts of one or more kinds of metals selected from Cu, Ni, Cr, Mo, Nb, V and Ti is treated by the following method (A) or method (B). In the method (A), the steel slab is heated at 1,000 to 1,300°C, and after rolling is ended at 700 to 950°C, it is cooled to a room temperature at 5 to 70°C/s (or is subjected to accelerated cooling to 200 to 500°C, and is thereafter allowed to cool or is slowly cooled). In the method (B), the steel slab is hot-rolled under unspecified conditions, is thereafter reheated at 700 to 900°C, and after it is held for ≤3,600 s, it is cooled, and after it is held at 350 to 500°C for ≥60 s, it is subsequently cooled.
COPYRIGHT: (C)2004,JPO

10. 发明专利

JP2004058145A Welding method of welded joint for steel structure, and welding material 审中-公开
公开(公告)号：JP2004058145A
公开(公告)日：2004-02-26
申请号：JP2002223926
申请日：2002-07-31
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： MORIKAGE YASUSHI , KUBO TAKAHIRO , AMANO KENICHI , KONAKAWA HIROYUKI , O SENKETSU
IPC分类号： B23K35/30 , B23K9/00 , C22C38/00 , C22C38/48
摘要： PROBLEM TO BE SOLVED: To provide a welding method for a welded joint for a steel structure, which is effective for improving the fatigue strength of a welded joint by introducing a stable compressed residual stress in every part in a weld zone.
SOLUTION: In the welding method of the welded joint for a steel structure using a weld material, the welding materials contains 0.20 wt% or less C, 8.0-18.0 wt% Cr, 6.0-13.0 wt% Ni, 5.0 wt% or less Si, 5.0 wt% or less Mn, and/or one or two kinds from 4.0 wt% or less Mo and 3.0 wt% or less Nb, with the balance composed of Fe and inevitable impurities. Using the welding material, steel materials are welded at a welding speed of 30-100 cm/min.
COPYRIGHT: (C)2004,JPO

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