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1. 发明专利

JP2009235460A High-strength uoe steel pipe excellent in earthquake-proof performance and low-temperature toughness of weld heat-affected zone 审中-公开
标题翻译：高强度钢管在焊接热影响区的地震性能和低温韧性优异
公开(公告)号：JP2009235460A
公开(公告)日：2009-10-15
申请号：JP2008081162
申请日：2008-03-26
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： TAKAHASHI NOBUAKI , YAMAMOTO AKIO , HAMADA MASAHIKO
IPC分类号： C22C38/00 , C22C38/16 , C22C38/58
CPC分类号： C22C38/42 , B21D5/015 , B21D35/005 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/58 , F16L9/02 , Y10T428/12292
摘要： PROBLEM TO BE SOLVED: To provide a high-strength UOE steel pipe which has excellent earthquake-proof performance, has a weld heat-affected zone having excellent low-temperature toughness, and is suitable for use in a pipeline to be laid in, for instance, permafrost in cold district or a seismogenetic region. SOLUTION: The UOE steel pipe has a steel composition which comprises 0.03 to 0.07% C, 0.05 to 0.50% Si, 1.6 to 2.2% Mn, 0.020% or less P, 0.003% or less S, 0.20 to 0.60% Cu, 0.10% or less Cr, 0.20 to 0.80% Ni, 0.005 to 0.030% Nb, 0.005 to 0.030% Ti, 0.0070% or less N, 0.005 to 0.060% Al so that a hardenability index (Pcm) can be 0.22% or less and also Cu+Cr+Ni: 0.4 to 1.5% and Nb+Mo+V: 0.05% or less can be satisfied, and the balance Fe with impurities; and has a yield strength in the axial direction of 480 MPa or higher and a yield ratio of 85% or lower. Furthermore, the weld heat-affected zone has a Charpy absorption energy of 40 J or higher at -40°C. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供具有优异的抗震性能的高强度UOE钢管，具有优异的低温韧性的焊接热影响区，适用于待铺设的管道例如，在寒冷地区或地震发生地区的永久冻土。解决方案：UOE钢管具有含有0.03〜0.07％的C，0.05〜0.50％的Si，1.6〜2.2％的Mn，0.020％以下的P，0.003％以下的S，0.20〜0.60％的Cu ，0.10％以下的Cr，0.20〜0.80％的Ni，0.005〜0.030％的Nb，0.005〜0.030％的Ti，0.0070％以下的N，0.005〜0.060％的Al，使得淬透性指数（Pcm）可以为0.22％以下并且可以满足Cu + Cr + Ni：0.4〜1.5％，Nb + Mo + V：0.05％以下，余量为Fe的杂质; 并且轴向的屈服强度为480MPa以上，屈服比为85％以下。此外，焊接热影响区在-40℃下具有40J以上的夏比吸收能。版权所有（C）2010，JPO＆INPIT

2. 发明专利

JP2005350688A Ultrahigh steel sheet for line pipe, its production method and welded steel pipe 有权
标题翻译：线管超声波钢板，其生产方法和焊接钢管
公开(公告)号：JP2005350688A
公开(公告)日：2005-12-22
申请号：JP2004169952
申请日：2004-06-08
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： OKAGUCHI HIDEJI , HAMADA MASAHIKO
IPC分类号： C21D8/02 , C22C38/00 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel sheet having excellent unstable ductile fracture resistance in spite of its ultrahigh strength satisfying a tensile strength of ≥760 MPa, to provide a steel pipe for a line pipe, and to provide a method for producing the steel sheet.
SOLUTION: In the ultrahigh strength steel sheet and steel pipe for a line pipe, the metallic structure in the surface layer part equivalent to 5 to 30% of the sheet thickness in a depth from the surface or back surface is the one comprising a tempered martensitic structure by ≥80%, the metallic structure other than that of the surface layer part is a bainitic structure, a martensitic structure, or a mixed structure thereof, and also, the average old austenite grain size is ≤18 μm.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决的问题：为了提供一种具有优异的不稳定的耐延性抗断裂性的钢板，尽管其超高强度满足拉伸强度≥760MPa，提供一种用于管线管的钢管，并且提供一种方法生产钢板。解决方案：在用于管线管的超高强度钢板和钢管中，表面层部分中的金属结构相当于从表面或背面深度的板厚的5至30％是包括回火马氏体组织为≥80％以上，除了表层部分以外的金属结构是贝氏体组织，马氏体组织或其混合结构，平均老奥氏体晶粒尺寸≤18μm。版权所有（C）2006，JPO＆NCIPI

3. 发明专利

JP2005232513A High strength steel sheet and manufacturing method 审中-公开
标题翻译：高强度钢板和制造方法
公开(公告)号：JP2005232513A
公开(公告)日：2005-09-02
申请号：JP2004041624
申请日：2004-02-18
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： OKAGUCHI HIDEJI , FUJIWARA TOMOYA , HAMADA MASAHIKO
IPC分类号： B21B1/38 , B21C37/08 , C21D8/02 , C22C38/00 , C22C38/04 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high strength steel sheet having ≥750 MPa tensile strength and having excellent low-temperature toughness and also excellent low-temperature toughness of weld zone even in a very low temperature environment of -46°C and also to provide its manufacturing method.
SOLUTION: The high strength steel sheet is composed of steel having a composition which consists of 0.01 to 0.10% C, ≤0.30% Si, 1.20 to 2.50% Mn, ≤0.010% P, ≤0.002% S, 0.2 to 1.5% Ni, 0.1 to 0.8% Mo, 0.005 to 0.06% Nb, 0.004 to 0.025% Ti, ≤0.05% sol.Al, ≤0.0050% N, ≤0.003% O(oxygen) and the balance Fe with impurities or further contains prescribed amounts of one or more elements among Cr, Cu, V, B, Ca, Mg, Zr and REM and in which the value of A represented by equation A=12P+45S+67(N+O) (where the symbol of an element means the content of the element contained in the steel) is made to ≤0.5%. The steel sheet has ≥0.18° half-width of X-ray diffraction intensity from the (110) plane and ≥750 MPa tensile strength or further has a prescribed metallic structure.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：即使在-46℃的非常低的温度环境下，提供具有≥750MPa拉伸强度并且具有优异的低温韧性和优异的焊接区的低温韧性的高强度钢板并提供其制造方法。解决方案：高强度钢板由具有0.01至0.10％C，≤0.30％Si，1.20至2.50％Mn，≤0.010％P，≤0.002％S，0.2至1.5％的组成的钢组成％Ni，0.1〜0.8％Mo，0.005〜0.06％Nb，0.004〜0.025％Ti，≤0.05％sol.Al，≤0.0050％N，≤0.003％O（氧），余量为Fe，含杂质， Cr，Cu，V，B，Ca，Mg，Zr和REM中的一种或多种元素的量，其中由式A表示的A的值= 12P + 45S + 67（N + O）（其中符号为表示钢中含有的元素的含量）为≤0.5％。钢板的（110）面的X射线衍射强度的半宽度≥0.18°，拉伸强度≥750MPa，进一步具有规定的金属结构。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2004360074A Steel having superhigh heat input welding characteristic 有权
公开(公告)号：JP2004360074A
公开(公告)日：2004-12-24
申请号：JP2004230046
申请日：2004-08-06
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： FUJIWARA TOMOYA , HAMADA MASAHIKO , ICHINOSE TAKESHI , OKAGUCHI HIDEJI
IPC分类号： C21D8/00 , C22C38/00 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel which has little deterioration in toughness even in high heat input welding, and can contribute to reduction in the operation cost of welded structures.
SOLUTION: The steel has a composition consisting of, by mass, 0.03 to 0.1% C, 0.01 to 0.5% Si, 0.5 to 2% Mn, >0.8 to 2% Cu, 0.005 to 0.025% Ti, 0.002 to 0.008% N, 0.002 to 0.05% sol.Al and ≤0.0035% O (oxygen), and the balance Fe with impurities, wherein the occupation ratio of a ferritic structure in the metallic structure is ≤50%.
COPYRIGHT: (C)2005,JPO&NCIPI

5. 发明专利

JP2012233231A Steel material excellent in low-temperature toughness at weld heat-affected zone 审中-公开
标题翻译：钢管材料在焊接热影响区域内的低温韧性优异
公开(公告)号：JP2012233231A
公开(公告)日：2012-11-29
申请号：JP2011102699
申请日：2011-05-02
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： TANABE HIROHISA , HAMADA MASAHIKO
IPC分类号： C22C38/00 , C22C38/16 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel material excellent in low-temperature toughness at a weld heat-affected zone.SOLUTION: The steel material contains, by mass, 0.03-0.15% C, 0.05-0.50% Si, 1.0-2.2% Mn, ≤0.020% P, 0.10-0.60% Cu, 0.10-1.0% Ni, 0.005-0.040% Nb, ≤0.007% N, 0.001-0.005% Al, 0.010-0.030% Ti, 0.002-0.007% S and the balance Fe with impurities, and has a chemical composition satisfying the formula (1): Ti/Al≥10 (wherein each element symbol means the content (mass%) of corresponding element). The steel material is excellent in low-temperature toughness at weld heat-affected zone.
摘要翻译：要解决的问题：提供在焊接热影响区域的低温韧性优异的钢材。钢材质量含有0.03-0.15％C，0.05-0.50％Si，1.0-2.2％Mn，≤0.020％P，0.10-0.60％Cu，0.10-1.0％Ni，0.005％ 0.040％Nb，≤0.007％N，0.001-0.005％Al，0.010-0.030％Ti，0.002-0.007％S，余量为Fe与杂质，化学成分满足式（1）：Ti /Al≥10 （其中，各元素符号是指相应元素的含量（质量％））。钢材在焊接热影响区域的低温韧性优异。版权所有（C）2013，JPO＆INPIT

6. 发明专利

JP2012052224A Steel material excelling in toughness of weld heat-affected zone 有权
标题翻译：焊接材料在焊接热影响区域的韧性
公开(公告)号：JP2012052224A
公开(公告)日：2012-03-15
申请号：JP2011168873
申请日：2011-08-02
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： SHINTAKU YOSHIAKI , HAMADA MASAHIKO , NISHI TAKAYUKI , OKAYAMA ATSUSHI , YOSHIDA NAOTADA , FUJIWARA TOMOYA , KAMIMURA TAKAYUKI , YUKI HIDEAKI , KAJIMA KAZUYUKI
IPC分类号： C22C38/00 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel material excelling in toughness of a weld heat-affected zone.SOLUTION: This steel material excelling in toughness of a weld heat-affected zone contains, by mass, 0.01-0.2% of C, 0.005-0.15% of Si, 0.3-2.5% of Mn, ≤0.05% of P, ≤0.008% of S, 0.0005-0.0030% of Al, ≤0.010% of N and 0.0010-0.0050% of O, wherein the residual part comprises Fe and impurities; the content of Mg, Ca, REM and Ti as the impurities satisfies the following formula (A) (Mg+Ca+REM+Ti/10) ≤0.001% (wherein, each elemental symbol of Mg, Ca, REM, Ti in the expression represents the content (mass%) of each element included in the steel material); the average composition of oxide particles dispersed in the steel material satisfies, by mass, AlO≥50% and MnO ≥5%; and the average dispersion density of the oxide particles each having a size of 0.4-10 μm by circle-equivalent diameter is ≥50 per 1 mm.
摘要翻译：要解决的问题：提供优异的焊接热影响区域的韧性的钢材。该焊接热影响区域的韧性优异的钢材质量分别含有C：0.01-0.2％，Si：0.005〜0.15％，Mn：0.3〜2.5％，P：0.05％ ≤0.008％的S，0.0005-0.0030％的Al，≤0.010％的N和0.0010-0.0050％的O，其中残余部分包括Fe和杂质; 作为杂质的Mg，Ca，REM，Ti的含量满足下式（A）（Mg + Ca + REM + Ti / 10）≤0.001％（其中，Mg，Ca，REM，Ti的各元素符号表示钢材中包含的各元素的含量（质量％））; 分散在钢材中的氧化物粒子的平均组成按质量满足Al 3 ≥50％，MnO≥ 5％; 并且通过圆当量直径分别具有0.4-10μm尺寸的氧化物颗粒的平均分散密度为每1mm 2 ≥50。版权所有（C）2012，JPO＆INPIT

7. 发明专利

JP2007162085A Method of producing steel with dispersion of fine oxide particles 审中-公开
标题翻译：生产分散有氧化硅颗粒的钢的方法
公开(公告)号：JP2007162085A
公开(公告)日：2007-06-28
申请号：JP2005361239
申请日：2005-12-15
申请人： Hideaki Suito , Sumitomo Metal Ind Ltd , 住友金属工業株式会社 , 英昭水渡
发明人： SUITO HIDEAKI , INOUE AKIRA , NISHI TAKAYUKI , NAKAJIMA TAKAHARU , HAMADA MASAHIKO , TANIYAMA AKIRA
IPC分类号： C21C7/06 , B22D1/00 , C21C7/00 , C21C7/04 , C21C7/072 , C21C7/076
CPC分类号： Y02P10/242
摘要： PROBLEM TO BE SOLVED: To provide a method of producing steel with dispersion of fine oxide particles which enables the quantity of dispersed fine oxide particles dispersed in the steel to be stably and remarkably increased and can be applied to a mass-production process. SOLUTION: The method of producing steel with dispersion of fine oxide particles comprises: adding one or more kinds of elements selected from among the elements having stronger affinity with oxygen than that of Si in molten steel into the molten steel as a deoxidizing element; then repeating once or more each of an operation 1 of an adding oxygen source for supplying the oxygen into the molten steel and an operation 2 of adding one or more kinds of element selected from among elements having stronger affinity than that of Si into the molten steel as the deoxidizing element. Before performing the above method, the oxygen concentration in the molten steel can be risen by adding the oxygen source into the molten steel. Further, in the above operation 1, the oxygen source can be added into the molten steel twice or more, not in a lump and in the above operation 2, the deoxidizing element can be added into the molten steel twice or more, not in a lump. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决的问题：提供一种能够使分散在钢中的分散的细小氧化物粒子的量稳定且显着增加并且可以应用于大规模生产过程的氧化物颗粒分散体的方法。解决方案：生产具有细小氧化物颗粒分散体的钢的方法包括：将从钢水中具有比氧更强的氧的元素中选出的一种或多种元素添加到钢水中作为脱氧元素 ; 然后重复一次或更多次将用于向钢水供应氧的添加氧源的操作1和将从具有比Si更强的元素中选择的一种或多种元素添加到钢水中的操作2 作为脱氧元素。在进行上述方法之前，可以通过向钢水中添加氧源来提高钢水中的氧浓度。此外，在上述操作1中，可以将氧源添加到钢水中两次以上，而不是块状，在上述操作2中，可以将脱氧元素添加到钢水中两次以上，而不是在块。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2006281217A Connecting tube and its manufacturing method 有权
标题翻译：连接管及其制造方法
公开(公告)号：JP2006281217A
公开(公告)日：2006-10-19
申请号：JP2005100426
申请日：2005-03-31
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： HIRATA HIROMASA , HAMADA MASAHIKO , SHINOKI KENICHI , SHIMOMOTO TOSHIKI
IPC分类号： B23K9/028 , B23K101/06
摘要： PROBLEM TO BE SOLVED: To provide a connecting tube excellent in buckling resistance and also to provide its manufacturing method.
SOLUTION: This connecting tube is equipped with steel tubes 10, 20 and a butt-welded zone 30. The steel tube 20 is installed coaxially with the steel tube 10 and provided with the same nominal outside diameter DA (mm) as the steel tube 10. The butt-welded zone 30 is between the tubes 10, 20 and formed by butt-welding of these tubes 10, 20. The outside diameter DO1 (mm) and the inner diameter DI1 (mm) of the end 11 of the steel tube 10 and those DO2 (mm) and DI2 (mm) of the end 21 of the steel tube 20 satisfy following expressions (1), (2). The yield stress Y1 (MPa) of the steel tube 10 and that Y2 (MPa) of the steel tube 20 satisfy expression (3) below. Expressions (1), (2) and (3) are: |DO1-DO2|≤1.5×|DI1-DI2| (1); |DI1-DI2|≤0.01×DA+2 (2); and |Y1-Y2|≤120 (3), respectively.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供耐弯曲性优异的连接管，并提供其制造方法。
解决方案：该连接管配备有钢管10,20和对接焊接区域30.钢管20与钢管10同轴设置，并且设置有与钢管10相同的标称外径DA（mm）对接焊接区域30在管10,20之间，并通过这些管子10,20的对接焊接形成。外径DO1（mm）和端部11的内径DI1（mm）钢管20的端部21的钢管10和DO2（mm）和DI2（mm）满足下述式（1），（2）。钢管10的屈服应力Y1（MPa）和钢管20的Y2（MPa）满足下面的式（3）。表达式（1），（2）和（3）是：¾DO1-DO2¾≤1.5×¾DI1-DI2¾（1）; ¾DI1-DI2¾≤0.01×DA + 2（2）; 和¾Y1-Y2¾≤120（3）。版权所有（C）2007，JPO＆INPIT

9. 发明专利

JP2009275245A Steel material superior in toughness of weld heat-affected zone 有权
标题翻译：焊接热影响区的钢材超高温
公开(公告)号：JP2009275245A
公开(公告)日：2009-11-26
申请号：JP2008125364
申请日：2008-05-13
申请人： Hideaki Suito , Sumitomo Metal Ind Ltd , 住友金属工業株式会社 , 英昭水渡
发明人： HAMADA MASAHIKO , NAKAJIMA TAKAHARU , TANIYAMA AKIRA , NISHI TAKAYUKI , MIZUKAMI HIDEO , SUITO HIDEAKI , INOUE AKIRA
IPC分类号： C22C38/00 , C21C7/04 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel material which can stably show a superior toughness in a weld heat-affected zone even when having been welded with a large quantity of heat input. SOLUTION: The steel material superior in the toughness of the weld heat-affected zone includes, by mass%, 0.03 to 0.20% C, 0.01 to 0.3% Si, 0.5 to 2.5% Mn, 0.005 to 0.025% (40 to 250 ppm) Ti, 0.02% or less P, 0.01% or less S, 0.01% or less N, 0.040% or less Al, 0.001 to 0.020% (10 to 200 ppm) Zr, 0.001 to 0.010% (10 to 100 ppm) O (oxygen), 0.001% or less Mg, and the balance Fe with impurities. The Ti in an amount of 0.004 to 0.020% exists as a solid solution Ti, and the Zr in an amount of 0.005% or less exists as a solid solution Zr. The steel material may further contain one or more components of Cu, Ni, Cr, Mo, Nb, V and B. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供即使在已经焊接有大量的热量输入的情况下，也能够在焊接热影响区域中稳定地显示出优异的韧性的钢材。＆lt; P＆gt;解决方案：焊接热影响区域的韧性优异的钢材以质量％计含有0.03〜0.20％的C，0.01〜0.3％的Si，0.5〜2.5％的Mn，0.005〜0.025％（40〜 250ppm）Ti，0.02％以下P，0.01％以下S，0.01％以下N，0.040％以下Al，0.001〜0.020％（10〜200ppm）Zr，0.001〜0.010％（10〜100ppm ）O（氧），0.001％以下Mg，余量为Fe与杂质。作为固溶Ti，存在0.004〜0.020％的Ti，作为固溶Zr，存在0.005％以下的Zr。钢材还可以含有一种或多种Cu，Ni，Cr，Mo，Nb，V和B的组分。版权所有（C）2010，JPO＆INPIT

10. 发明专利

JP2006257499A High tensile strength steel sheet, welded steel tube and method for producing them 有权
标题翻译：高强度钢板，焊接钢管及其生产方法
公开(公告)号：JP2006257499A
公开(公告)日：2006-09-28
申请号：JP2005076727
申请日：2005-03-17
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： TAKAHASHI NOBUAKI , HAMADA MASAHIKO , OKAGUCHI HIDEJI , YAMANAKA AKIHIRO , SETA ICHIRO
IPC分类号： C22C38/00 , B21B3/00 , B21C37/08 , B22D11/00 , B22D11/115 , B22D11/128 , C21D8/02 , C22C38/58
CPC分类号： C21D8/0226 , B21B3/02 , B21C37/08 , C21D8/10 , C21D9/08 , C21D9/50 , C21D2211/002 , C21D2211/005 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/40 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/50 , C22C38/58 , Y10S148/908 , Y10T428/12292
摘要： PROBLEM TO BE SOLVED: To provide a high tensile strength steel sheet having a yield strength of ≥551 MPa and a tensile strength of ≥620 MPa, and also having excellent toughness, high speed ductile breakdown properties and weldability. SOLUTION: In the high tensile strength steel sheet, carbon equivalent Pcm shown by formula (1) is 0.180 to 0.220%, surface hardness is ≤285 by Vickers, the ratio of insular martensite in the surface layer part is ≤10%, the ratio of the mixed structure of ferrite and bainite at the inside than the surface layer part is ≥90%, also, the ratio of the bainite in the mixed structure is ≥10%, the thickness of the lath in the bainite is ≤1 μm, the length of the lath is ≤20 μm, and the segregation degree as the ratio of the Mn concentration in the central segregation part to the Mn concentration in the part at a depth of 1/4 of the sheet thickness from the surface is ≤1.3: Pcm=C+Si/30+(Mn+Cu+Cr)/20+Ni/60+Mo/15+V/10+5B (1); the symbols in the formula (1) denote the mass% of the respective elements. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供屈服强度≥551MPa，拉伸强度≥620MPa的高强度钢板，并且还具有优异的韧性，高速韧性击穿性和焊接性。解决方案：在高拉伸强度钢板中，式（1）所示的碳当量Pcm为维克斯的0.180至0.220％，表面硬度≤285，表层部分中的岛状马氏体比为≤10％铁素体与贝氏体混合结构比表面层部分的比例≥90％，混合结构中的贝氏体比例≥10％，贝氏体的板条厚度≤ 1μm时，板条的长度为≤20μm，偏析部分的中心偏析部分的Mn浓度与该表面的板厚的1/4的深度部分的Mn浓度的比例 ≤1.3：Pcm = C + Si / 30 +（Mn + Cu + Cr）/ 20 + Ni / 60 + Mo / 15 + V / 10 + 5B（1）公式（1）中的符号表示各元素的质量％。版权所有（C）2006，JPO＆NCIPI

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