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1. 发明专利

JP2014031544A Steel material for large heat input welding 有权
标题翻译：用于大型热输入焊接的钢材
公开(公告)号：JP2014031544A
公开(公告)日：2014-02-20
申请号：JP2012172494
申请日：2012-08-03
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： ARAO RYO , MURAKAMI YOSHIAKI , HASE KAZUKUNI , ENDO SHIGERU
IPC分类号： C22C38/00 , C21D8/02 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel material having excellent weld zone toughness and joint strength at a welding heat input amount of more than 300 kJ/cm, and having a yield strength of 460 MPa or more.SOLUTION: The steel material contains C:0.03 to 0.08%, Si:0.01 to 0.15%, Mn:1.80 to 2.40%, P:0.015% or less, S:0.0005 to 0.0040%, Al:0.005 to 0.100%, Nb:0.003 to 0.030%, Ti:0.005 to 0.050%, N:0.0050 to 0.0160%, B:0.0003 to 0.0025%, and if required at least one kind of V, Cu, Ni, Cr, Mo, Ca, Mg, Zr and REM, having a Ti/N ratio of 2.0 or more and less than 4.0 and an A value of 10 to 25, the balance Fe with inevitable impurities. The steel material also has a yield stress of 460 MPa or more, and the softest portion of a heat- affected zone of the steel material has a hardness of 160 or more in HV10 at a welding heat input amount of more than 300 kJ/cm. A=2256×Ti-7716×N+10000×B, where chemical elements are contents (mass%).
摘要翻译：要解决的问题：提供一种在焊接热输入量大于300kJ / cm，具有460MPa以上的屈服强度的焊接区韧性和接合强度优异的钢材。解决方案：钢材含有C ：0.03〜0.08％，Si：0.01〜0.15％，Mn：1.80〜2.40％，P：0.015％以下，S：0.0005〜0.0040％，Al：0.005〜0.100％，Nb：0.003〜0.030％ 0.005〜0.050％，N：0.0050〜0.0160％，B：0.0003〜0.0025％，如果需要，具有Ti / N的V，Cu，Ni，Cr，Mo，Ca，Mg，Zr和REM中的至少一种 2.0以上且小于4.0，A值为10〜25，余量为Fe与不可避免的杂质。钢材的屈服应力也为460MPa以上，焊接热输入量大于300kJ / cm时，HV10中钢材的热影响区域的最软部分的硬度为160以上。 A = 2256×Ti-7716×N + 10000×B，化学成分为含量（质量％）。

2. 发明专利

JP2013194316A High strength steel plate for high heat input welding excellent in material uniformity in steel plate and method for manufacturing the same 有权
标题翻译：用于高温输入焊接的高强度钢板在钢板中的材料均匀性及其制造方法
公开(公告)号：JP2013194316A
公开(公告)日：2013-09-30
申请号：JP2012066442
申请日：2012-03-23
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： NAKAJIMA KOICHI , HASE KAZUKUNI , MITAO SHINJI
IPC分类号： C22C38/00 , C21D8/02 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high strength steel plate excellent in low temperature toughness of a high heat input welding heat-affected zone and also excellent in material uniformity in the steel plate; and a method for manufacturing the same.SOLUTION: A high strength steel plate includes, by mass, 0.030-0.150% C, ≤0.10% Si, 1.00-2.00% Mn, each content of P, S, Al, Ti, N, Ca, O is specified, and each content of Ca, O, S satisfies a specific formula, and further includes, if required, one or more of B, V, Nb, Ni, Cu, Cr, Mo, W, Mg, Zr and REM, and the balance of Fe and inevitable impurities. In the steel plate, the metal structure includes substantially a ferrite and bainite structure, unevenness of the hardness of the steel plate in the direction of plate thickness is ΔHV 50 or less and unevenness of the hardness of the steel plate in the direction of plate width is ΔHV 50 or less. The steel having the steel composition is heated to a specific temperature, subjected to hot rolling at a steel plate surface temperature of ≥700°C and ≤900°C, and then subjected to first cooling from a temperature on the surface of the steel plate of ≥700°C at a cooling rate of ≥20°C/s and ≤100°C/s on the surface of the steel plate to a temperature on the surface of the steel plate of ≥400°C and ≤600°C, and then subjected to second cooling to a temperature of ≤400°C at a cooling rate of ≥4°C/s in average of the steel plate.
摘要翻译：要解决的问题：提供高热输入焊接热影响区的低温韧性优异的钢板和材料均匀性优异的高强度钢板; 及其制造方法。解决方案：高强度钢板以质量计包含0.030-0.150％C，≤0.10％Si，1.00-2.00％Mn，P，S，Al，Ti，N， Ca，O的含量，Ca，O，S的含量满足特定的式子，如果需要，还可以含有B，V，Nb，Ni，Cu，Cr，Mo，W，Mg，Zr 和REM，余量为Fe和不可避免的杂质。在钢板中，金属结构基本上包括铁素体和贝氏体组织，钢板在板厚方向上的硬度不均匀度为＆Dgr; HV 50以下，钢板的硬度不均匀度板宽度为＆Dgr; HV 50以下。将具有钢组成的钢加热到特定温度，在钢板表面温度≥700℃和≤900℃下进行热轧，然后从钢板表面的温度进行第一次冷却钢板表面的冷却速度≥20℃/ s，≤100℃/ s〜400℃，钢板表面温度≥400℃，≤600℃ 然后以钢板平均的≥4℃/ s的冷却速度进行第二次冷却至≤400℃的温度。

3. 发明专利

JP2013151731A Structural high-strength thick steel plate excellent in property of preventing brittle crack propagation and production method thereof 有权
标题翻译：结构高强度厚钢板优良的预防脆性裂缝传播及其生产方法
公开(公告)号：JP2013151731A
公开(公告)日：2013-08-08
申请号：JP2012111157
申请日：2012-05-15
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： TAKEUCHI YOSHIKO , HASE KAZUKUNI , MITAO SHINJI , MURAKAMI YOSHIAKI
IPC分类号： C22C38/00 , C21D8/02 , C22C38/14 , C22C38/58
CPC分类号： C21D8/02 , C21D8/0205 , C21D8/0226 , C21D8/0263 , C21D2201/05 , C21D2211/005 , C22C38/00 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/14 , C22C38/18
摘要： PROBLEM TO BE SOLVED: To provide a structural high-strength thick steel plate being excellent in the property of preventing brittle crack propagation, having a thickness not less than 50 mm, and being suited for use in ships, and to provide a production method thereof.SOLUTION: A thick steel plate excellent in the property of preventing brittle crack propagation is characterized in that it has a specified component composition, its metallographic structure is a structure composed of mainly a ferrite phase, it has such a texture that the density in the RD//(110) plane in the plate thickness surface is not less than 1.3 and the density in the RD//(110) plane at the plate thickness center is not less than 1.8, the Charpy fracture surface transition temperature vTrs at the plate surface is -60°C or lower, and the Charpy fracture surface transition temperature vTrs at the plate thickness center is -50°C or lower.
摘要翻译：要解决的问题：提供一种厚度不小于50mm并且适用于船舶的脆性裂纹扩展性能优异的结构高强度厚钢板，并提供其制造方法。解决方案：防止脆性裂纹扩展性能优异的厚钢板的特征在于其具有特定的组分组成，其金相组织是主要由铁素体相组成的结构，其具有如下结构：板厚表面的RD //（110）面不小于1.3，板厚中心的RD //（110）面的密度不小于1.8，板上的夏比断裂面转变温度vTrs 表面为-60℃以下，板厚中心的夏比断裂面转变温度vTrs为-50℃以下。

4. 发明专利

JP2013147741A High-strength steel sheet for heavy heat input welding excellent in material uniformity within the steel sheet and method for producing the same 有权
标题翻译：用于钢板材质均匀的重型热输入焊接的高强度钢板及其制造方法
公开(公告)号：JP2013147741A
公开(公告)日：2013-08-01
申请号：JP2012276387
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 , B21B3/00 , C21D8/02 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high-strength steel sheet that is excellent in low-temperature toughness in a weld heat affected zone of heavy heat input welding and is excellent in material uniformity within the steel sheet, and a method for producing the same.SOLUTION: A steel sheet has a composition comprising, by mass%, 0.030-0.150% C, ≤0.50% Si, 1.00-2.00% Mn, P, S, Al, Ti, N, Ca, O, Ca, O and S in amounts satisfying a prescribed formula, one or more chosen from B, V, Nb, Ni, Cu, Cr, Mo, W, Mg, Zr and REM if required and the balance being Fe and unavoidable impurities, has a metallic structure substantially comprising ferrite and a bainite structure, has a variation of hardness in the sheet thickness direction of ≤ΔHV50 and has a variation in hardness in the sheet width direction of ≤ΔHV50. The steel having the steel composition is heated to a prescribed temperature, subjected to hot-rolling with the steel sheet surface temperature being 700-900°C, subsequently subjected to a first cooling starting from a steel sheet surface temperature of ≥700°C to reach a steel sheet surface temperature of 400-600°C with a cooling rate at steel sheet surface of 20-100°C/s and subsequently subjected to a second cooling with a steel sheet average cooling rate of ≥4°C/s to reach ≤400°C.
摘要翻译：要解决的问题：提供一种在重热输入焊接的焊接热影响区域中具有优异的低温韧性的高强度钢板，并且在钢板内的材料均匀性优异的方法及其制造方法解决方案：钢板具有以质量％计含有0.030-0.150％C，≤0.50％Si，1.00-2.00％Mn，P，S，Al，Ti，N，Ca，O，Ca，O和 S，满足规定的配方，如果需要，选择B，V，Nb，Ni，Cu，Cr，Mo，W，Mg，Zr和REM中的一种或多种，余量为Fe和不可避免的杂质，包含铁素体和贝氏体组织时，板厚方向的硬度变化为≤＆Dgr; HV50，并且板宽度方向的硬度变化为≤＆Dgr; HV50。将具有钢组成的钢加热到规定温度，在钢板表面温度为700-900℃下进行热轧，随后从钢板表面温度≥700℃开始进行第一次冷却至达到钢板表面温度为400-600℃，钢板表面的冷却速度为20-100℃/秒，然后以钢板平均冷却速度≥4℃/秒的速度进行第二次冷却，达到≤400°C。

5. 发明专利

JP2013147732A 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：JP2013147732A
公开(公告)日：2013-08-01
申请号：JP2012224906
申请日：2012-10-10
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： NAKAJIMA KOICHI , YOKOTA TOMOYUKI , HASE KAZUKUNI , NISHIMURA KIMIHIRO , 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, 0.004-0.030% Ti, 0.0003-0.0030% B, 0.0035-0.0070% N, 0.0005-0.0030% Ca, ≤0.0040% O and, if required, at least one of V, Ni, Cu, Cr, Mo, W, Mg, Zr and REM, and the balance being Fe and unavoidable impurities, while satisfying following relation (1): 0 300 kJ/cm, the area fraction of island martensite is ≤1% 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的情况下进行重度热输入焊接时，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，0.004-0.030％Ti，0.0003-0.0030％B，0.0035-0.0070％N， 0.0005-0.0030％Ca，≤0.0040％O，如果需要，可以使用V，Ni，Cu，Cr，Mo，W，Mg，Zr和REM中的至少一种，余量为Fe和不可避免的杂质，（1）：0 <（Ca-（0.18 + 130×Ca）×O）/1.25/S≤0.8，其中Ca，O和S表示含量（质量％）。当用于重型热输入焊接的钢材进行焊接热输入> 300kJ / cm 2的重热输入焊接时，焊接热影响区域的结构中岛状马氏体的面积分数≤1％债券附近。

6. 发明专利

JP2012107307A Ingot for bearing having excellent rolling fatigue life, and method for producing steel for bearing 有权
标题翻译：用于具有优异的滚动疲劳寿命的轴承的INGOT，以及用于生产用于轴承的钢的方法
公开(公告)号：JP2012107307A
公开(公告)日：2012-06-07
申请号：JP2010267746
申请日：2010-11-30
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： HONJO MINORU , HASE KAZUKUNI , KIMURA HIDETO
IPC分类号： C22C38/00 , C21D8/00 , C22C38/18 , C22C38/54
CPC分类号： C21D9/40 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/40 , F16C2204/64
摘要： PROBLEM TO BE SOLVED: To provide a measure capable of suppressing generation of eutectic carbide in a segregation part, with respect to an ingot for bearings obtained by an ingot casting method.SOLUTION: The ingot for bearings has a composition containing ≥0.56 and ≤0.70 mass% C, ≥0.15 and
摘要翻译：要解决的问题：提供能够抑制偏析部分中的共晶碳化物的产生的方法相对于通过铸锭法获得的轴承用铸锭。＆lt; P＆gt;解决方案：用于轴承的铸锭具有含有≥0.56和≤0.70质量％C，≥0.15和<0.50质量％Si，≥0.60和≤1.50质量％Mn，≥0.50和≤1.10质量％Cr，≤ 0.025质量％P，≤0.025质量％S，≥0.005和≤0.500质量％Al，≤0.0015质量％O，≥0.0030和≤0.015质量％N，其余为Fe和附带杂质，并具有共晶碳化物满足0

7. 发明专利

JP2011179048A Steel for carburizing having excellent cold workability 有权
标题翻译：用于加工具有优异的冷加工性能的钢
公开(公告)号：JP2011179048A
公开(公告)日：2011-09-15
申请号：JP2010042761
申请日：2010-02-26
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： ICHINOMIYA KATSUYUKI , HASE KAZUKUNI , KIMURA HIDETO
IPC分类号： C22C38/00 , C22C38/20 , C22C38/46
摘要： PROBLEM TO BE SOLVED: To provide a steel for carburizing, which has excellent cold workability, is inexpensive, and has high fatigue life.
SOLUTION: The steel has a componential composition comprising, by mass, 0.10 to 0.35% C, 0.01 to 0.20% Si, 0.30 to 1.50% Mn, ≤0.02% P, 0.008 to 0.025% S, 0.015 to 0.050% Al, 1.35 to 3.00% Cr, 0.1 to 0.7% Cu, 0.008 to 0.020% N, ≤0.0012% O in the ranges satisfying 2.5≥Al/N≥1.7, and the balance comprising Fe and inevitable impurities.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供具有优异的冷加工性的便宜的渗碳用钢，并且具有高的疲劳寿命。钢的组成成分为质量分数为0.10〜0.35％的Si，0.01〜0.20％的Si，0.30〜1.50％的Mn，≤0.02％的P，0.008〜0.025％的S，0.015〜0.050％的Al ，1.35〜3.00％的Cr，0.1〜0.7％的Cu，0.008〜0.020％的N，≤0.0012％的O，满足2.5≥Al/N≥1.7的范围，余量由Fe和不可避免的杂质构成。版权所有（C）2011，JPO＆INPIT

8. 发明专利

JP2017115229A レール有权
公开(公告)号：JP2017115229A
公开(公告)日：2017-06-29
申请号：JP2015254905
申请日：2015-12-25
申请人： Jfeスチール株式会社 , Jfe Steel Corp
发明人： HONJO MINORU , KIMURA TATSUKI , ICHINOMIYA KATSUYUKI , HASE KAZUKUNI
IPC分类号： C22C38/00 , C22C38/18 , C22C38/54
摘要：【課題】延性に優れ、高軸重鉄道においても好適に使用することができる高延性パーライト系レールを提供する。【解決手段】重量%で、C:0.70〜0.85%、Si:0.10〜1.50%、Mn:0.40〜1.50%、P:0.035%以下、S:0.0005〜0.010%、およびCr:0.05〜1.50%を含有し、残部が実質的にFeおよび不可避的不純物からなる成分組成を有し、ラメラー分率が40〜98%である、レール。【選択図】図2

9. 发明专利

JP2013151743A High strength thick steel plate excellent in toughness of high heat input welding part and brittle crack propagation stopping property, and method for producing the same 有权
标题翻译：高强度输入焊接部件的韧性高韧性厚钢板和脆性裂缝传播停止性能及其制造方法
公开(公告)号：JP2013151743A
公开(公告)日：2013-08-08
申请号：JP2012277531
申请日：2012-12-20
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： HASE KAZUKUNI , TAKEUCHI YOSHIKO , NISHIMURA KIMIHIRO , MITAO SHINJI
IPC分类号： C22C38/00 , C21D8/02 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel plate excellent in toughness of a high heat input welding part and brittle crack propagation stopping properties, and to provide a method for producing the steel plate.SOLUTION: A high strength thick steel plate includes specific contents of C, Si, Mn, Al, P, S, Nb, Ti, N, Ca and B, wherein 0
摘要翻译：要解决的问题：提供一种高热输入焊接部的韧性优异的钢板和脆性裂纹扩展停止性，提供钢板的制造方法。解决方案：高强度厚钢板包括 C，Si，Mn，Al，P，S，Nb，Ti，N，Ca和B，其中0 <（Ca-（0.18 + 130×Ca）×O）/1.25/S <1和Ceq（= C + 根据需要，Mn / 6 +（Cu + Ni）/ 15 +（V + Mo + Cr）/ 5）分别为≥0.36％和<0.45％，以及一种或多种Cu，Ni，Cr，Mo和V ，其余为Fe和不可避免的杂质。高强度钢板具有如下结构：在与板钢板表面平行的平面中的（211）面的X射线强度比≥1.0，在包括中心的整个板厚的≥1/ 3的区域板厚的一部分，在板厚的中央部分的贝氏体分数为≥80％，板厚为1/4的部分的夏比断裂面转变温度为≤-40℃。

10. 发明专利

JP2013151732A Structural high-strength thick steel plate excellent in property of preventing brittle crack propagation and production method thereof 有权
标题翻译：结构高强度厚钢板优良的预防脆性裂缝传播及其生产方法
公开(公告)号：JP2013151732A
公开(公告)日：2013-08-08
申请号：JP2012111158
申请日：2012-05-15
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： TAKEUCHI YOSHIKO , HASE KAZUKUNI , MITAO SHINJI , MURAKAMI YOSHIAKI
IPC分类号： C22C38/00 , C21D8/02 , C22C38/14 , C22C38/58
CPC分类号： C21D8/02 , C21D8/0205 , C21D8/0226 , C21D8/0263 , C21D2201/05 , C21D2211/002 , C22C38/00 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18
摘要： PROBLEM TO BE SOLVED: To provide a structural high-strength thick steel plate being excellent in the property of preventing brittle crack propagation, having a thickness of not less than 50 mm, and being suited for use in ships, and to provide a production method thereof.SOLUTION: A thick steel plate excellent in the property of preventing brittle crack propagation is characterized in that it has a metallographic structure composed of mainly bainite, it has such a texture that the density in the RD//(110) plane at the plate thickness center is not less than 1.5, the Charpy fracture surface transition temperatureTat the plate surface and at the plate thickness center is -40°C or lower, and more desirably, the Charpy fracture surface transition temperature and the density in the RD//(110) plane at the plate thickness center satisfy formula (1):T-12×I≤-70, whereinTis the fracture surface transition temperature (°C) at the plate thickness center and Iis the density in the RD//(110) plane at the plate thickness center.
摘要翻译：要解决的问题：提供厚度不小于50mm，适用于船舶的脆性裂纹扩展性优异的结构高强度厚钢板，提供制造方法其特征在于具有主要由贝氏体构成的金相组织，其结构使得RD //（110）面中的密度在板厚中心不小于1.5，板表面和板厚中心的夏氏断裂面转变温度为-40℃以下，更希望的是，夏比断裂面转变温度和RD //中的密度（110）面满足式（1）：T-12×I≤-70，其中为板厚中心处的断裂面转变温度（℃），I为RD //（110）中的密度）pl ane在板厚中心。

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