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1. 发明专利

JP2014210287A サブマージアーク溶接に用いる溶融型フラックス有权
标题翻译：熔断焊接用于埋弧焊接
公开(公告)号：JP2014210287A
公开(公告)日：2014-11-13
申请号：JP2014054544
申请日：2014-03-18
申请人： Jfeスチール株式会社 , Jfe Steel Corp , 株式会社神戸製鋼所 , Kobe Steel Ltd
发明人： YOKOTA TOMOYUKI , KAWAI KEIJI , OTA YOSHIAKI , HAYAKAWA NAOYA , KOZUKI TADAHEI , TOYODA TAKEMASA , OTA MAKOTO , SUENAGA KAZUYUKI
IPC分类号： B23K35/362
CPC分类号： B23K35/36
摘要：【課題】溶接金属の低酸素化と低水素化とを達成でき、溶接作業性(すなわちビードの形状、スラグの剥離性等)も良好な溶融型フラックスを提供する。【解決手段】SiO2:15〜30質量%、MnO:2〜10質量%、TiO2:1〜6質量%、CaO:10〜25質量%、CaF2:15〜40質量%、Al2O3:5〜30質量%、MgO:2〜10質量%、FeO:0.3〜3.0質量%、B2O3:0.6質量%以下を含有し、残部が不可避的不純物からなるとともに、その含有量(質量%)から下記の(1)式で算出されるBI値が1.3以上を満足し、かつ[%CaF2]/[%CaO]が1以上を満足する溶融型フラックスである。BI=〔0.5[%MnO]+[%CaO]+[%MgO]+[%CaF2]〕?〔[%SiO2]+0.5([%TiO2]+[%Al2O3])〕・・・(1)【選択図】なし
摘要翻译：要解决的问题：提供可以实现焊接金属的低氧化和低氢化的熔融焊剂，并且还具有优异的焊接加工效率（即焊道形状，熔渣剥离性等）。解决方案：熔融焊剂含：SiO：15〜30质量％ 2-10质量％MnO; 1-6质量％的TiO; 10-25质量％CaO; 15-40质量％CaF; 5-30质量％的AlO; 2-10质量％的MgO; 0.3〜3.0质量％的FeO; 0.6质量％以下的BO; 其余由不可避免的杂质组成。此外，从熔融焊剂的含量（质量％），通过以下表达式（1）计算出的BI值满足1.3以上，[CaF] / [CaO]满足1以上。（1）BI = [0.5（％MnO）+（％CaO）+（％MgO）+（％CaF）]÷[（SiO 2）+0.5（[％TiO] + [％AlO]）]

2. 发明专利

JP2014024098A Melting type flux used for submerged arc welding and welding method using the same 有权
标题翻译：用于浸没式焊接的熔融型焊剂和使用其的焊接方法
公开(公告)号：JP2014024098A
公开(公告)日：2014-02-06
申请号：JP2012166945
申请日：2012-07-27
申请人： Jfe Steel Corp , Jfeスチール株式会社 , Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： YOKOTA TOMOYUKI , HAYAKAWA NAOYA , YANO HIROSHI , YAMASHITA TAKAKO , TOYODA TAKEMASA , OTA MAKOTO , SUENAGA KAZUYUKI
IPC分类号： B23K35/362 , B23K9/18
摘要： PROBLEM TO BE SOLVED: To provide a welding type flux superior in a bead shape and slag peelability.SOLUTION: The melting type flux is used for the submerged arc welding, and the melting type flux includes SiOby 15-27 mass%, MnO by 3-15 mass%, TiOby 2-7 mass%, CaO by 10-25 mass%, CaFby 15-35 mass%, AlOby 10-25 mass%. MgO by 2-10 mass%, BOby 0.6 mass% or less, and is composed of an inevitable impurity in a residual part, in which BI=[0.5[%MnO]+[%CaO]+[%MgO]+[%CaF]]÷[[%SiO]+ 0.5([%TiO]+[%AlO])]satisfies 1.3≤BI≤2.5, assuming the content (mass%) of its SiO, MnO, TiO, CaO, CaF, AlOand MgO respectively as [%SiO], [%MnO], [%TiO] [%CaO], [%CaF], [%AlO[ and [%MgO].
摘要翻译：要解决的问题：提供焊珠型焊剂和焊渣剥离性优异的焊剂。熔融型焊剂用于埋弧焊，熔融型焊剂含SiO为15-27质量％，MnO为3 -15质量％，TiO 2为2-7质量％，CaO为10〜25质量％，CaF为15〜35质量％，AlO为10〜25质量％。 MgO为2-10质量％，BO为0.6质量％以下，由残留部分中不可避免的杂质构成，其中BI = [0.5 [MnO] + [％CaO] + [％MgO] + [％ CaF]]÷[[SiO 2] + 0.5（[％TiO] + [％AlO]）]满足1.3≤BI≤2.5，假定其SiO，MnO，TiO，CaO，CaF，AlO的含量（质量％） MgO分别为[％SiO]，[％MnO]，[％TiO] [％CaO]，[％CaF]，[％AlO [和[MgO]）。

3. 发明专利

JP2013147740A Steel material for heavy heat input welding 有权
标题翻译：用于重型热输入焊接的钢材
公开(公告)号：JP2013147740A
公开(公告)日：2013-08-01
申请号：JP2012276386
申请日：2012-12-19
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： NAKAJIMA KOICHI , YOKOTA TOMOYUKI , HASE KAZUKUNI , MITAO SHINJI
IPC分类号： C22C38/00 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel material for heavy heat input welding which exhibits excellent toughness in a welding-heat-affected zone, even when subjected to heavy heat input welding with a welding heat input of more than 300 kJ/cm.SOLUTION: A steel material for heavy heat input welding comprises, by mass%, prescribed amounts of C, Si, Mn, P, S, Al and Nb and further comprises 0.004-0.030% Ti, 0.0003-0.0030% B, 0.0035-0.0070% N, 0.0005-0.0030% Ca, ≤0.0040% O and the balance being Fe and unavoidable impurities, while satisfying following relation (1): 0 300 kJ/cm, the grain size of intergranular ferrite is ≤50 μm in a structure of a welding-heat-affected zone in the vicinity of a bond.
摘要翻译：要解决的问题：即使在焊接热输入量超过300kJ / cm的情况下进行重型热输入焊接时，也可以提供在焊接热影响区域中具有优异韧性的重型热输入焊接用钢材。：用于重型热输入焊接的钢材以质量％计含有规定量的C，Si，Mn，P，S，Al和Nb，并且还包含0.004-0.030％Ti，0.0003-0.0030％B，0.0035-0.0070％ N，0.0005-0.0030％Ca，≤0.0040％O，余量为Fe和不可避免的杂质，同时满足以下关系式（1）：0 <（Ca-（0.18 + 130×Ca）×O）/1.25/S≤0.40 其中，Ca，O和S表示相应成分的含量（质量％）。当用于重型热输入焊接的钢材料进行大于300kJ / cm的焊接热输入的重的热输入焊接时，在焊接热影响区域的结构中晶间铁素体的晶粒尺寸≤50μm 债券附近。

4. 发明专利

JP2010248621A Method for manufacturing high-strength high-toughness steel 有权
标题翻译：制造高强度高韧性钢的方法
公开(公告)号：JP2010248621A
公开(公告)日：2010-11-04
申请号：JP2010062444
申请日：2010-03-18
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： HAYASHI KENJI , YOKOTA TOMOYUKI , OKATSU MITSUHIRO , OI KENJI , SHIKAUCHI NOBUO
IPC分类号： C21D8/02 , C21D8/06 , C22C38/00 , C22C38/06 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method for obtaining fine austenite grain diameter without needing reheating and quenching.
SOLUTION: In the method for manufacturing the high-strength high-toughness stee, a steel material having the composition containing, by mass, 0.01-0.30% C, 0.01-0.80% Si, 0.20-2.50% Mn, ≤0.020% P, ≤0.0070% S, 0.003-0.100% sol.Al and the balance Fe with inevitable impurities is heated to ≥1,000°C, and the rolling is performed in austenite recrystallizing temperature zone, then the rolling is performed at ≥40% accomulated rolling-reduction ratio in the non-austenite-recrystallized temperature zone. Thereafter, the rolled steel is heated at the temperature raising speed of ≥2°C/sec from the Ar
3 transforming point or higher to the austenite recrystallized temperature zone, and further, this steel is accelerating-cooled from the Ar
3 transforming point or higher to ≤600°C.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：待解决的问题：提供一种获得细奥氏体晶粒直径而不需要再加热和淬火的制造方法。解决方案：在高强度高韧度钢的制造方法中，具有质量含有0.01-0.30％C，0.01-0.80％Si，0.20-2.50％Mn，≤0.020 ％P，≤0.0070％S，0.003-0.100％sol.Al，将余量为Fe的不可避免的杂质加热至≥1,000℃，并在奥氏体再结晶温度区进行轧制，然后进行≥40％在非奥氏体 - 再结晶温度区中的压缩减少率。然后，将轧制钢从Ar 3 转变点以上的升温速度加热至奥氏体再结晶温度区域，进而将该钢加速冷却从Ar 3 转换点或更高至≤600°C。版权所有（C）2011，JPO＆INPIT

5. 发明专利

JP2009242853A Steel member for high-heat input welding 有权
标题翻译：用于高热输入焊接的钢构件
公开(公告)号：JP2009242853A
公开(公告)日：2009-10-22
申请号：JP2008089671
申请日：2008-03-31
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： YOKOTA TOMOYUKI , ICHINOMIYA KATSUYUKI , NISHIMURA KIMIHIRO , SHIKAUCHI NOBUO
IPC分类号： C22C38/00 , C21D8/02 , C22C38/08 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel member for high-heat input welding having excellent toughness after welding even when being subjected to high-heat input welding exceeding 300 kJ/cm.
SOLUTION: The steel member is disclosed for high-heat input welding having a composition comprising, by mass, 0.03 to 0.08% C, 1.8 to 2.6% Mn and ≤1.0% Ni, and in which carbon equivalent Ceq lies in the range of 0.33 to 0.45, and in which, regarding the structure of a heat-affected zone in the vicinity of a bond when high heat input welding in which welding input heat exceeds 300 kJ/cm is performed, the size of the old austenite intergranular structure other than grain boundary ferrite precipitated from the old austenite grain boundaries is ≤10 μm, and also, the area proportion of island martensite is ≤2%; wherein the size of the old austenite intergranular structure denotes the average section length measured by a segment method in the grain boundary structure with an inclination of ≥15° measured by EBSD (Electron Backscatter Diffraction).
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种即使经受高于300kJ / cm的高热输入焊接的焊接后的韧性优异的高热输入焊接用钢构件。解决方案：公开了用于高热输入焊接的钢构件，其组成包括质量为0.03至0.08％的C，1.8至2.6％的Mn和≤1.0％的Ni，其中碳当量Ceq位于范围为0.33〜0.45，其中，对于进行焊接输入热量超过300kJ / cm 2的高热输入焊接时，关于焊接附近的热影响区域的结构，将进行旧奥氏体晶间尺寸从旧奥氏体晶界析出的晶界铁素体以外的结构为10μm以下，岛马氏体的面积比例≤2％。其中，旧奥氏体晶间结构的尺寸表示通过EBSD（电子反散射衍射）测定的倾斜度≥15°的晶界结构中的分段法测定的平均截面长度。版权所有（C）2010，JPO＆INPIT

6. 发明专利

JP2013049894A High toughness steel for heavy heat input welding and method for manufacturing the same 审中-公开
标题翻译：用于重型热输入焊接的高韧性钢及其制造方法
公开(公告)号：JP2013049894A
公开(公告)日：2013-03-14
申请号：JP2011188575
申请日：2011-08-31
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： NAKAJIMA KOICHI , YOKOTA TOMOYUKI , NISHIMURA KIMIHIRO , MITAO SHINJI
IPC分类号： C22C38/00 , B21B3/00 , C21D8/02 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high toughness steel for heavy heat input welding, which is suitably used for a ship and the like and excels in toughness and strength of its weld heat-affected zone where heat input is ≥350 kJ/cm, and of which the base material has a tensile strength of ≥590 MPa and a toughness vTrs of ≤-45°C, and to provide a method for manufacturing the high toughness steel.SOLUTION: The steel has a composition containing, by mass%: 0.001-0.015% C; 0.01-0.80% Si; 1.0-2.0% Mn; ≤0.020% P; ≤0.005% S; 0.005-0.10% Al; 0.30-1.5% Mo; 0.0003-0.0050% B; 0.005-0.050% Ti; 0.0010-0.0060% N; 0.01-0.05% Nb; and further one or more selected from Cu, Ni, Cr, V, W, Ca, Mg, Zr, and REM. The steel material having the composition is heated to 950-1,250°C, then hot-rolled under the condition that the cumulative reduction rate in an austenitic non-recrystallizing temperature range is ≥50% and the rolling completion temperature is 680-830°C, and thereafter cooled to a temperature range of ≤580°C at a cooling speed of ≥1.0°C/s.
摘要翻译：要解决的问题：提供适用于船舶等的重型热输入焊接用高韧性钢，其热输入≥350kJ的焊接热影响区域的韧性和强度优异 / cm，其基材的拉伸强度≥590MPa，韧性vTrs≤-45℃，并提供高韧性钢的制造方法。解决方案：钢具有以质量％计含有：0.001-0.015％C; 0.01-0.80％Si; 1.0-2.0％Mn; ≤0.020％P; ≤0.005％S; 0.005-0.10％Al; 0.30-1.5％Mo; 0.0003-0.0050％B; 0.005-0.050％Ti; 0.0010-0.0060％N; 0.01-0.05％Nb; 进一步选自Cu，Ni，Cr，V，W，Ca，Mg，Zr和REM中的一种以上。将具有该组成的钢材加热至950-1,250℃，然后在奥氏体不再结晶温度范围的累积压下率为≥50％，轧制完成温度为680-830℃的条件下进行热轧然后以≥1.0℃/ s的冷却速度冷却至≤580℃的温度范围。版权所有（C）2013，JPO＆INPIT

7. 发明专利

JP2012082525A Thick steel plate excellent in characteristic of brittle crack propagation arrest 有权
标题翻译：厚钢板优良的特征是脆性裂缝传播方式
公开(公告)号：JP2012082525A
公开(公告)日：2012-04-26
申请号：JP2011263163
申请日：2011-12-01
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： OTSUBO HIROFUMI , YOKOTA TOMOYUKI , ENDO SHIGERU
IPC分类号： C22C38/00 , B21B3/00 , C21D8/02 , C22C38/06 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a thick steel plate which is excellent in characteristic of brittle crack propagation arrest.SOLUTION: The thick steel plate has a microstrutcure which includes a ferrite phase as a main phase and one or more kinds of pearlite phase, bainitic phase and martensitic phase as a second phase. The ferrite phase with an average particle diameter of 3 μm or less is formed in at least an area of 10-20% in plate thickness from the front and rear surfaces in the direction of the thick steel plate, and its area ratio to the total quantity of ferrite in the area is 30% or more. Also, it is formed in an area of less than 10% in plate thickness from the front and rear surfaces in the direction of the thick steel plate, and its area ratio to the total quantity of ferrite in the area is less than 30%. Thus, the characteristic in brittle crack propagation arrest can be greatly improved in the thick steel plate.
摘要翻译：要解决的问题：提供一种脆性裂纹扩展停止特性优异的厚钢板。解决方案：厚钢板具有包含铁素体相作为主相的微结构和作为第二相的一种或多种珠光体相，贝氏体相和马氏体相。平均粒径为3μm以下的铁素体相从厚钢板的表面和表面的至少10〜20％的面积形成，其面积比为总该区域的铁素体的量为30％以上。而且，从厚钢板的前后方向的板厚形成的面积小于10％的面积，也就是说，面积比相对于该面积的铁素体的总量小于30％。因此，在厚钢板中脆性裂纹扩展停止的特性可大大提高。版权所有（C）2012，JPO＆INPIT

8. 发明专利

JP2011074446A Steel for high heat input welding 有权
标题翻译：用于高热输入焊接的钢
公开(公告)号：JP2011074446A
公开(公告)日：2011-04-14
申请号：JP2009226977
申请日：2009-09-30
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： NAKAJIMA KOICHI , YOKOTA TOMOYUKI , NISHIMURA KIMIHIRO , SHIKAUCHI NOBUO
IPC分类号： C22C38/00 , C21D8/02 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel for high heat input welding used for various structures of shipbuilding or the like, having excellent weld heat affected zone toughness by high heat input welding in which heat input exceeds 300 kJ/cm, and having a yield strength of ≥460 N/mm
2 .
SOLUTION: The steel has a componential composition containing, by mass, 0.03 to 0.1% C, 0.01 to 0.5% Si, 2.0 to 3.0 Mn, ≤0.02% P, ≤0.0050% S, 0.005 to 0.1% Al, 0.004 to 0.03% Ti, 0.01 to 0.05% Nb, 0.0003 to 0.0025% B and 0.0060 to 0.0100% N, and at needed, one or more selected from V, Cu, Ni, Cr, Mo, Ca, Mg, Zr and REM, and the balance Fe with inevitable impurities, and satisfying (Ti+0.5×Nb)/N≤3.40, wherein precipitates containing Ti, Nb and N with the grain size of 0.01 to 0.10 μm are present by 1.0×10
5 pieces/mm
2 when heated to 1,400°C to the temperature of (a melting point-10°C).
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了提供用于造船等的各种结构的高热输入焊接用钢，其热输入超过300kJ / cm的高热输入焊接具有优异的焊接热影响区韧性，以及屈服强度≥460N/ mm 2 。钢的组成成分为质量分数为0.03〜0.1％，Si：0.01〜0.5％，2.0〜3.0Mn，≤0.02％P，≤0.0050％S，0.005〜0.1％Al，0.004 至0.03％Ti，0.01〜0.05％Nb，0.0003〜0.0025％B和0.0060〜0.0100％N，根据需要选择V，Cu，Ni，Cr，Mo，Ca，Mg，Zr和REM中的一种以上，余量为Fe和不可避免的杂质，满足（Ti + 0.5×Nb）/N≤3.40，其中含有Ti，Nb和N的析出物的粒径为0.01〜0.10μm，分别为1.0×10 < / SP>片/ mm 2 ，加热至1400℃至（熔点-10℃）的温度。版权所有（C）2011，JPO＆INPIT

9. 发明专利

JP2011006772A Steel material for high heat input welding 有权
标题翻译：用于高热输入焊接的钢材
公开(公告)号：JP2011006772A
公开(公告)日：2011-01-13
申请号：JP2009227077
申请日：2009-09-30
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： YOKOTA TOMOYUKI , NISHIMURA KIMIHIRO , SHIKAUCHI NOBUO
IPC分类号： C22C38/00 , C21D8/02 , C22C38/14 , C22C38/58
CPC分类号： C22C38/02 , B23K35/3073 , C22C38/001 , C22C38/002 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/18
摘要： PROBLEM TO BE SOLVED: To provide a steel material for high heat input welding, which exhibits a yield stress of 460 MPa or higher, and which exhibits excellent weld-zone toughness when welded even with a high weld heat input exceeding 300 kJ/cm.SOLUTION: The steel material for high heat input welding contains by mass C: 0.03 to 0.08%, Si: 0.01 to 0.15%, Mn: 1.8 to 2.6%, P: 0.012% or less, S: 0.0005 to 0.0040%, Al: 0.005 to 0.1%, Nb: 0.003 to 0.03%, Ti: 0.003 to 0.03%, N: 0.0025 to 0.0070%, and B: 0.0003 to 0.0025%, with the carbon equivalent Cfalling within the range of 0.33 to 0.45, and which, when welded with a high weld heat input exceeding 300 kJ/cm, exhibits an island martensite content of 1 vol% or less in the structure of the heat-affected zone in the neighborhood of the bond.
摘要翻译：要解决的问题：提供一种屈服应力为460MPa以上的高热输入性焊接用钢材，即使在超过300kJ / cm的高的焊接热输入的情况下也能够显示优异的焊接区韧性。解决方案：用于高热输入焊接的钢材质量为C：0.03〜0.08％，Si：0.01〜0.15％，Mn：1.8〜2.6％，P：0.012％以下，S：0.0005〜0.0040％，Al： 0.005〜0.1％，Nb：0.003〜0.03％，Ti：0.003〜0.03％，N：0.0025〜0.0070％，B：0.0003〜0.0025％，碳当量为0.33〜0.45的范围，当以超过300kJ / cm的高焊接热输入焊接时，在附近的热影响区的结构中呈现1体积％以下的岛马氏体含量。

10. 发明专利

JP2010229528A High tensile strength steel sheet having excellent ductility and method for producing the same 有权
标题翻译：具有优异强度的高强度钢板及其制造方法
公开(公告)号：JP2010229528A
公开(公告)日：2010-10-14
申请号：JP2009080826
申请日：2009-03-30
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： YOKOTA TOMOYUKI , NISHIMURA KIMIHIRO , SHIKAUCHI NOBUO
IPC分类号： C22C38/00 , C21D8/02 , C22C38/06 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high tensile strength steel sheet which has excellent ductility, and is suitably used for bridges, buildings, line pipe original plates, shipbuilding, construction equipment, industrial machines, marine structures, penstocks or the like, and to provide a method for producing the same.
SOLUTION: The steel sheet has a composition containing, by mass, 0.02 to 0.15% C, 0.01 to 0.50% Si, 0.5 to 2.0% Mn, 0.01 to 0.08 Al, ≤0.050% P, ≤0.010% S and ≤0.010% N, and, if required, further one or more kinds selected from Cu, Ni, Cr, Mo, V, Nb, Ti, B, Ca, REM and Mg, and the balance Fe with inevitable impurities, and has a ferrite or bainite or ferrite+bainite structure in which pearlite with the average grain size of ≤5 μm is dispersed to a depth of 5 to 25% in the sheet thickness from the surface layer of the sheet thickness, wherein the inside therefrom has a structure mainly consisting of ferrite+bainite.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供延展性优异的高抗拉强度钢板，适用于桥梁，建筑物，管线原版，造船，建筑设备，工业机械，船舶结构，管道等并提供其制造方法。钢板的组成为：含有0.02〜0.15％的C，0.01〜0.50％的Si，0.5〜2.0％的Mn，0.01〜0.08的Al，≤0.050％的P，≤0.010％的S和≤ 0.010％N，如果需要，还可以选自Cu，Ni，Cr，Mo，V，Nb，Ti，B，Ca，REM和Mg中的一种或多种，余量为Fe与不可避免的杂质，或贝氏体或铁素体+贝氏体组织，其中平均粒径≤5μm的珠光体从片材表面层分散到片材厚度的5至25％的深度，其中其内部具有主要结构由铁素体+贝氏体组成。版权所有（C）2011，JPO＆INPIT

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