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1. 发明专利

JP2008095152A HIGH TENSILE STRENGTH STEEL SHEET FOR LARGE HEAT INPUT WELDING HAVING REDUCED ACOUSTIC ANISOTROPY, EXCELLENT WELDABILITY AND TENSILE STRENGTH IN ≥570 MPa CLASS, AND ITS PRODUCTION METHOD 有权
标题翻译：用于具有减少的声学反射的大型热输入焊接的高强度钢板，优良的焊接性和拉伸强度> 570MPa级及其生产方法
公开(公告)号：JP2008095152A
公开(公告)日：2008-04-24
申请号：JP2006278779
申请日：2006-10-12
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： HOSHINO MANABU , FUJIOKA MASAAKI , MIZOGUCHI MASATAKE , TANAKA YOICHI
IPC分类号： C22C38/00 , B21B1/26 , B21B3/00 , C21D8/02 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high tensile strength steel sheet for large heat input welding having reduced acoustic anisotropy, excellent weldability and tensile strength in a ≥570 MPa class, and to provide its production method.
SOLUTION: The steel contains prescribed amounts of C, Mn, Al, B and N, wherein the content of Si is controlled to
摘要翻译：要解决的问题：为了提供一种≥570MPa级别的具有降低的各向异性，优异的焊接性和拉伸强度的大型热输入焊接的高抗拉强度钢板，并提供其制造方法。解决方案：钢含有规定量的C，Mn，Al，B和N，其中Si的含量控制在<0.10％，以将岛状马氏体的含量调节至<3％，Nb，Ti C和N的含量满足Nb≥0.025％，Ti≥0.005％，0.045％≤Nb+ 2×Ti≤0.105％，A =（Nb + 2Ti）×（C + N×12/14）控制在0.0022〜0.0055，包含满足Pcm为0.13〜0.18的成分，含有≥30％的贝氏体和<5％的珠光体。在其制造方法中，将钢加热至由组分值以上决定的特定温度，进行粗轧，然后在规定的温度范围内以规定的累积牵伸速度进行精轧，对其进行加速冷却指定的温度范围，随后进行温和的冷却。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2011190506A Fire-resistant steel material superior in high-temperature strength of base metal and high-temperature ductility of weld heat-affected zone, and method for manufacturing the same 有权
标题翻译：耐金属材料的高温强度和焊接热影响区的高温腐蚀性及其制造方法
公开(公告)号：JP2011190506A
公开(公告)日：2011-09-29
申请号：JP2010057983
申请日：2010-03-15
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MIZOGUCHI MASATAKE , HASEGAWA HIROSHI , YOSHIDA TAKU , UEMORI RYUJI , WATABE YOSHIYUKI
IPC分类号： C22C38/00 , B21B3/00 , C21D8/02 , C22C38/38 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a fire-resistant steel material which shows high yield strength in each base metal part at 600°C, also has high ductility in a weld heat-affected zone, and is superior in the toughness of the base metal part and the weld heat-affected zone.
SOLUTION: The fire-resistant steel material includes 0.005-0.050% C, 0.01-0.50% Si, 0.50-2.00% Mn, 0.50-2.00% Cr, 0.001-0.030% Ti, 0.005-0.10% Al, 0.001-0.006% N, less than 0.01% Mo, less than 0.03% V, 0.0003% or less B, less than 0.02% P, less than 0.01% S, less than 0.01% O and the balance Fe with unavoidable impurities; and has a steel material structure in which one or more of a bainite structure, a martensite structure or a ferrite structure formed of grains with circle equivalent grain sizes of 20 μm or less when measured with a EBSP method occupy 80% or more by an area rate, and the balance is a ferrite or MA structure with unavoidable phases.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了提供在600℃下在每个贱金属部件中显示高屈服强度的耐火钢材料，在焊接热影响区域中也具有高延展性，并且韧性优异贱金属部分和焊接热影响区。
解决方案：耐火钢材料包括0.005-0.050％C，0.01-0.50％Si，0.50-2.00％Mn，0.50-2.00％Cr，0.001-0.030％Ti，0.005-0.10％Al，0.001- 0.006％N，小于0.01％Mo，小于0.03％V，0.0003％以下B，小于0.02％P，小于0.01％S，小于0.01％O，余量为不可避免的杂质Fe; 并且具有钢材结构，其中当用EBSP方法测量时，由等效晶粒尺寸为20μm或更小的颗粒形成的贝氏体组织，马氏体组织或铁素体结构中的一种或多种占据80％以上的区域速率，余量是不可避免的相的铁素体或MA结构。版权所有（C）2011，JPO＆INPIT

3. 发明专利

JP2008261011A Method for producing high strength steel having 470 mpa or more yield stress and 570 mpa or more tensile strength, and excellent in toughness of welding heat-affected part 有权
标题翻译：生产具有470MPa或更高应力的高强度钢的方法，以及570MPa或更高的拉伸强度，并且焊接热影响部分的韧性优异
公开(公告)号：JP2008261011A
公开(公告)日：2008-10-30
申请号：JP2007104944
申请日：2007-04-12
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MIZOGUCHI MASATAKE , HASEGAWA HIROSHI , FUJIOKA MASAAKI , HOSHINO MANABU , TANAKA YOICHI
IPC分类号： C21D8/02 , C22C38/00 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a high strength steel having ≥470 MPa YS, ≥570 MPa TS and excellent in toughness of welding heat-affected part. SOLUTION: A steel slab containing, by mass, 0.005 to CM ≤0.20 and satisfies the relation of Ti/47.9≥N/14.0 and the balance Fe with inevitable impurities, is heated at 1,000-1,250°C, and the rolling is performed to Ar 3 point to 920°C, and when the rolling is finished, an accelerated cooling off ≥1 °C/sec is performed in the temperature range of 300 to COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种具有≥470MPa的YS，≥570MPa的TS和焊接热影响部分的韧性优异的高强度钢的方法。＆lt; P＆gt;解决方案：一种钢坯，其含有0.005-0.05％的C，<0.05％的Si，1.5-2.5％的Mn，0.02-0.08％的Nb，0.005-0.030％的Ti，0.0005-0.0020％的B，0.001 -0.01％Al，0.001-0.007％N，进一步分别为Mo，W和P CM ≤0.20的0.05-0.5％，满足Ti /47.9≥N/ 14.0，余量为不可避免的杂质的Fe被加热到1000-1,250℃，在920-120℃下进行轧制压下率<60％，轧制压下率≥30％ 3 指向920℃，当轧制结束时，在300至<550℃的温度范围内执行加速冷却≥1℃/秒，此后，进行冷却。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JP2011190502A Fire-resistant steel material excellent in high-temperature strength and in low-temperature toughness and reheat embrittlement resistance in weld heat-affected zone, and method for manufacturing the same 有权
标题翻译：耐热钢材料在高温强度和低温韧性以及焊接热影响区的抗电弧耐腐蚀性及其制造方法中具有优异的性能
公开(公告)号：JP2011190502A
公开(公告)日：2011-09-29
申请号：JP2010057793
申请日：2010-03-15
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MIZOGUCHI MASATAKE , HASEGAWA HIROSHI , YOSHIDA TAKU , UEMORI RYUJI , WATABE YOSHIYUKI
IPC分类号： C22C38/00 , C21D8/02 , C22C38/38 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a fire-resistant steel material which has a high yield strength at 600°C, at the same time, suppresses reheat embrittlement in a weld heat-affected zone at the time of fire, and further is excellent in the toughness of a base metal and a weld joint. SOLUTION: The fire-resistant steel material excellent in high-temperature strength and in low-temperature toughness and reheat embrittlement resistance in the weld heat-affected zone includes 0.005-0.050% C, 0.01-0.50% Si, 0.50-2.00% Mn, 0.50-2.00% Cr, 0.001-0.006% N, 0.001-0.030% Ti and 0.005-0.10% Al, and less than 0.01% Mo, less than 0.0003% B, less than 0.02% P, less than 0.01% S and less than 0.01% O which are limited, and the balance Fe with unavoidable impurities; has a tensile strength of 400-610 MPa at room temperature; has a yield stress of 157 MPa or more at 600°C when a tensile strength at room temperature is 400-489 MPa and has a yield stress of 217 MPa or more at 600°C when a tensile strength at room temperature is 490-610 MPa; and has a fracture reduction value of 20% or more at 600°C in the weld heat-affected zone. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了提供在600℃下具有高屈服强度的耐火钢材料，同时在火灾时抑制焊接热影响区域中的再加热脆化，并且进一步贱金属和焊接接头的韧性优异。解决方案：焊接热影响区的高温强度和低温韧性以及再热脆性优异的耐火钢材料包括0.005-0.050％C，0.01-0.50％Si，0.50-2.00 ％Mn，0.50-2.00％Cr，0.001-0.006％N，0.001-0.030％Ti和0.005-0.10％Al，小于0.01％Mo，小于0.0003％B，小于0.02％P，小于0.01％ S小于0.01％O，余量为Fe，不可避免的杂质; 在室温下的拉伸强度为400-610MPa; 当在室温下的拉伸强度为400-489MPa时，在600℃下的屈服应力为157MPa以上，当在室温下的拉伸强度为490〜610℃时，在600℃下的屈服应力为217MPa以上兆帕; 并且在焊接热影响区域的600℃下的断裂折减值为20％以上。版权所有（C）2011，JPO＆INPIT

5. 发明专利

JP2008261012A Method for producing high strength steel having 500 mpa or more yield stress and 570 mpa or more tensile strength and excellent in toughness of welding heat-affected part 有权
标题翻译：生产具有500MPa或更高应力的高强度钢的方法和570MPa或更高的强度和优异的焊接热影响部分的韧性
公开(公告)号：JP2008261012A
公开(公告)日：2008-10-30
申请号：JP2007104945
申请日：2007-04-12
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MIZOGUCHI MASATAKE , HASEGAWA HIROSHI , FUJIOKA MASAAKI , HOSHINO MANABU , TANAKA YOICHI
IPC分类号： C21D8/02 , C22C38/00 , C22C38/14 , C22C38/16
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a high strength steel having ≥500 MPa yield stress and ≥570 MPa tensile strength and excellent in toughness of welding heat-affected part.
SOLUTION: A steel slab containing, by mass, 0.005 to Ar
3 point to 920°C, and after completing the rolling, an accelerated cooling is started at ≥1°C/sec within 60 sec, and the cooling is stopped at 300 to
摘要翻译：要解决的问题：提供一种具有≥500MPa屈服应力和≥570MPa拉伸强度和焊接热影响部分的韧性优异的高强度钢的方法。解决方案：一种钢坯，其含有0.005-0.040％的C，<0.05％的Si，1.0至<1.5％的Mn，0.10-0.50％的Mo，0.02-0.08％的Nb，0.005-0.020％的Ti， 0.0005-0.0030％B，0.001-0.010％Al，0.0010-0.0070％N，满足[B]/10.8≥[N] /14.0- [Ti] /47.9的关系，加热到1020〜1300℃，在920-120℃下进行轧制轧制压下率<60％，> Ar 3 时累积压下率为50-90％，达到920℃ 在60秒内以≥1℃/秒开始加速冷却，在300〜550℃下停止冷却，然后进行空冷。版权所有（C）2009，JPO＆INPIT

6. 发明专利

JP2007191785A Method for manufacturing high-tensile steel material superior in weld cracking resistance 有权
标题翻译：焊接开裂电阻制造高强度钢材料的方法
公开(公告)号：JP2007191785A
公开(公告)日：2007-08-02
申请号：JP2006186666
申请日：2006-07-06
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TANAKA YOICHI , FUJIOKA MASAAKI , HOSHINO MANABU , MIZOGUCHI MASATAKE , KUMAGAI TATSUYA , YOSHIDA TAKU
IPC分类号： C21D8/02 , C22C38/00 , C22C38/04 , C22C38/54
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a high-tensile steel material which has a tensile strength of 570 N/mm 2 or higher and is superior in weld cracking resistance. SOLUTION: The steel material has a composition comprising, by mass%, 0.002-0.20% C, 0.001-2% Si, 0.001% or more but less than 0.5% Mn, further Cu, Ni, Cr, Mo, V, Nb, Ti, B, REM, Mg, Ca, Al, Zr, Hf, Ta, S and/or N, as needed, while controlling a value of Pcm into 0.26% or less, which is defined by the mathematical expression (A): and the balance Fe with unavoidable impurities. The manufacturing method comprises the steps of: casting a steel material having the above composition; directly rolling the cast steel material without cooling it, or alternatively rolling it after having temporarily cooled it to room temperature and reheated it to 950 to 1,250°C; finish-rolling it at a temperature of an Ar3 point or higher; forcibly cooling the rolled steel material to a temperature range between room temperature and 650°C from a temperature of the Ar3 point or higher; and further tempering the cooled material at 100 to 700°C, as needed. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种拉伸强度为570N / mm 2以上的高强度钢材的制造方法，其耐焊缝龟裂性优异。钢材具有以质量％计含有0.002-0.20％的C，0.001-2％的Si，0.001％以上但小于0.5％的Mn，还有Cu，Ni，Cr，Mo，V ，Nb，Ti，B，REM，Mg，Ca，Al，Zr，Hf，Ta，S和/或N，同时将Pcm的值控制在0.26％以下， A）：余量为Fe与不可避免的杂质。该制造方法包括以下步骤：铸造具有上述组成的钢材; 直接轧制铸钢材料而不进行冷却，或者在将其暂时冷却至室温后再进行轧制，并将其再加热至950至1250℃; 在Ar3点以上的温度下进行精轧; 从Ar3点以上的温度将轧制钢材强制地冷却至室温〜650℃的温度范围; 并根据需要进一步回火100〜700℃的冷却材料。版权所有（C）2007，JPO＆INPIT

7. 发明专利

JP2011202209A Refractory steel having excellent reheat embrittlement resistance and low temperature toughness and method for producing the same 有权
$Refractory steel having excellent reheat embrittlement resistance and low temperature toughness and method for producing the same$
标题翻译：具有优异耐回弹性和低温韧性的耐火钢及其制造方法
公开(公告)号：JP2011202209A
公开(公告)日：2011-10-13
申请号：JP2010068615
申请日：2010-03-24
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MIZOGUCHI MASATAKE , HASEGAWA HIROSHI , YOSHIDA TAKU , OKADA TADAYOSHI , ONODERA NORIAKI , KITA YASUSHI , FUKUMOTO NORIHIRO
IPC分类号： C22C38/00 , B21B3/00 , C21D8/00 , C21D8/02 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a refractory steel in which the contents of alloy elements Mo, Cu, Cr and Nb increasing high temperature strength are limited, and which has sufficient refractory performance and low temperature toughness, i.e., a refractory steel which has excellent reheat embrittlement resistance and low temperature toughness, and a method for producing the same.SOLUTION: The refractory steel having excellent reheat embrittlement resistance and low temperature toughness has a composition comprising, by mass, 0.002 to 0.050% C, 0.01 to 0.50% Si, 0.50 to 2.00% Mn, 0.05 to
摘要翻译：要解决的问题：提供一种耐高温钢，其中Mo，Cu，Cr和Nb的合金元素的含量在高温下的增加受到限制，具有足够的耐火性能和低温韧性，即具有优异的耐火钢再加热耐脆性和低温韧性及其制造方法。解决方案：具有优异的再热脆性和低温韧性的耐火钢具有以质量计含有0.002至0.050％的C，0.01至0.50％的Si， 0.50〜2.00％的Mn，0.05〜0.20％的Mo，0.0003〜0.0030％的B，0.0010〜0.0100％的N，0.005〜0.030％的Ti和0.002〜0.100％的Al，其中P，S和O的含量分别为限于<0.0200％P，<0.0100％S和<0.0100％O，余量为Fe与不可避免的杂质，其中Mo和B的含量（质量％）满足Mo /B≤286。

8. 发明专利

JP2011038146A Refractory steel having excellent high-temperature strength of base material and high-temperature ductility of weld heat-affected zone and production method therefor 有权
$Refractory steel having excellent high-temperature strength of base material and high-temperature ductility of weld heat-affected zone and production method therefor$
标题翻译：具有优异的基体材料高温强度和焊接热影响区高温腐蚀性的钢铁及其生产方法
公开(公告)号：JP2011038146A
公开(公告)日：2011-02-24
申请号：JP2009185788
申请日：2009-08-10
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MIZOGUCHI MASATAKE , HASEGAWA HIROSHI , WATABE YOSHIYUKI
IPC分类号： C22C38/00 , B21B3/00 , C21D8/02 , C22C38/38 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a refractory steel used for a steel structure, in which a base material part has 600°C high yield strength and a weld heat-affected zone has 600°C high ductility when exposed to fire, and further the base material part and the weld heat-affected zone have excellent low-temperature toughness, and to provide a production method for the refractory steel. SOLUTION: The refractory steel has a composition containing 0.005 to 0.050% C, 0.50 to 2.00% Mn, 0.50 to 2.00% Cr, 0.10 to 0.50% V and 0.005 to 0.030% Ti, and has an optical microscope structure in which, by area fraction, ≥80% is composed of a bainitic phase or a martensitic phase. In the production method, a slab having the above composition is heated to 1,100 to 1,300°C and is subjected to hot rolling or working at 800 to 1,000°C at a reduction ratio of ≥50%, and the hot rolling or working is finished at ≥800°C, and thereafter, the slab is subjected to accelerated cooling from an Ar3 point or more to 450°C at a cooling rate of ≥2°C/s. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种用于钢结构的耐火钢，其中基材部分具有600℃的高屈服强度，并且焊接热影响区在暴露于火中时具有600℃的高延展性，并且进一步地，基材部分和焊接热影响区具有优异的低温韧性，并提供耐火钢的制造方法。解决方案：耐火钢具有含有0.005-0.050％C，0.50-2.00％Mn，0.50-2.00％Cr，0.10-0.50％V和0.005-0.030％Ti的组成，并且具有光学显微镜结构，其中，按面积分数计，≥80％由贝氏体相或马氏体相组成。在制造方法中，将具有上述组成的板坯加热至1100〜1300℃，以800〜1000℃的压缩比进行热轧或加工，压下率≥50％，热轧或加工完成在≥800℃下，然后以≥2℃/ s的冷却速度将板坯从Ar3点加热至450℃进行加速冷却。版权所有（C）2011，JPO＆INPIT

9. 发明专利

JP2007302978A Method for manufacturing high-strength steel of tensile strength of 780 mpa class having excellent toughness of weld heat affected zone 有权
标题翻译：制造具有焊接热影响区优良韧性的780 MPA类的拉伸强度高强度钢的方法
公开(公告)号：JP2007302978A
公开(公告)日：2007-11-22
申请号：JP2006135086
申请日：2006-05-15
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MIZOGUCHI MASATAKE , FUJIOKA MASAAKI , HOSHINO MANABU , TANAKA YOICHI
IPC分类号： C21D8/02 , B21B3/00 , C22C38/00 , C22C38/12 , C22C38/38
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing high-strength steel of tensile strength of 780 MPa class having excellent toughness of a weld heat affected zone with unexperienced low alloy component and at high productivity.
SOLUTION: In themethod for manufacturing the high-strength steel of tensile strength of 780 MPa class having excellent toughness of the weld heat affected zone, a steel slab having the composition consisting of, by mass, ≥0.005% and 920°C is >60%, and the cumulative draft below Ar
3 point is 30-95%, and cooled after the rolling.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种抗拉强度为780MPa级的高强度钢的方法，该方法具有具有优异的低合金成分的焊接热影响区的优异的韧性并且以高的生产率。解决方案：在制造具有优异的焊接热影响区的韧性的780MPa级的高强度钢的制造方法中，具有以质量计≥0.005％和<0.030％的组成的钢坯， C，<0.05％Si，1.0-2.5％Mn，0.02-0.08％Nb，0.001-0.10％Al和0.0001〜≤0.01％N，焊接裂纹参数PCM≤0.25，余量为Fe的不可避免的杂质为加热至1,020-1,300℃，轧制，使得在≤120℃和> 920℃的温度范围内的累积牵伸为> 60％，并且低于Ar 3点的累积牵伸为 30-95％，并在轧后冷却。版权所有（C）2008，JPO＆INPIT

10. 发明专利

JP2020117811A 耐摩耗鋼审中-公开
公开(公告)号：JP2020117811A
公开(公告)日：2020-08-06
申请号：JP2020072435
申请日：2020-04-14
申请人： NIPPON STEEL CORP
发明人： MIZOGUCHI MASATAKE , KAMO TAKAHIRO , HARA SOSUKE , MIYAKE TAKUMI , TAKAHASHI YASUTETSU
IPC分类号： C22C38/00 , B21B1/22 , C22C38/58
摘要：【課題】寒冷地でも使用が可能な優れた低温靭性を有する耐摩耗鋼を提供する。【解決手段】所定の化学組成からなり、厚さが40mm以上であり、表面から厚さ方向に厚さの1/4の位置における金属組織が、マルテンサイト及び下部ベイナイトの面積率の合計:50〜100%、旧オーステナイト平均結晶粒径:5〜23μmであり、表面から厚さ方向に1mmの位置において、ブリネル硬さ:360〜440であることを特徴とする、耐摩耗鋼である。【選択図】なし

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