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1. 发明专利

JP2013108130A Rolled steel bar for hot forging 有权
标题翻译：用于锻造的轧制钢棒
公开(公告)号：JP2013108130A
公开(公告)日：2013-06-06
申请号：JP2011253473
申请日：2011-11-21
申请人： Nippon Steel & Sumitomo Metal Corp , 新日鐵住金株式会社
发明人： HIGASHIDA SHINJI , MATSUMOTO HITOSHI , NEISHI YUTAKA , MATSUI NAOKI , MAKINO TAIZO
IPC分类号： C22C38/00 , C21D8/06 , C22C38/28 , C22C38/50
摘要： PROBLEM TO BE SOLVED: To provide a high-strength hot-forged component having an endurance ratio of 0.43 or more.SOLUTION: A rolled steel bar for hot forging contains, by mass, 0.27-0.37% of C, 0.30-0.75% of Si, 1.00-1.45% of Mn, 0.008-0.030% of S, 0.05-0.30% of Cr, 0.005-0.050% of Al, 0.200-0.320% of V, 0.0040-0.030% of Ti, 0.0080-0.0200% of N, and the remainder comprising Fe with impurities, wherein, the following expression is satisfied: [1.05≤C+(1/10)Si+(1/5)Mn+(5/22)Cr+1.65V-(5/7)S≤1.18]. In the rolled steel bar, the number density of TiN having a size of 0.005 μm or more is ≥0.4 pieces/μm, and the maximum size of TiN in 160 mmis ≤30 μm. The rolled steel bar for hot forging may contain one or more of Cu, Ni, and Mo, provided that the following expression is satisfied: [1.05≤C+(1/10)Si+(1/5)Mn+(5/22)Cr+1.65V-(5/7)S+(1/5)Cu+(1/5)Ni+(1/4)Mo≤1.18].
摘要翻译：待解决的问题：提供耐久性比为0.43以上的高强度热锻部件。解决方案：用于热锻的轧制钢棒以质量计含有0.27-0.37％的C，0.30-0.75％的Si，1.00-1.45％的Mn，0.008-0.030％的S，0.05-0.30％的 Cr，0.005-0.050％的Al，0.200-0.320％的V，0.0040-0.030％的Ti，0.0080-0.0200％的N，其余的包含Fe和杂质，其中满足下列表达式：[1.05≤C+ （1/10）Si +（1/5）Mn +（5/22）Cr + 1.65V-（5/7）S≤1.18]。在轧制钢筋中，尺寸为0.005μm以上的TiN的数密度为≥0.4个/μm 2 ，TiN的最大尺寸为160mm 2 ≤30μm。 [1.05≤C+（1/10）Si +（1/5）Mn +（5/22）Cr），热锻的轧制钢棒可以含有Cu，Ni，Mo中的一种以上。 + 1.65V-（5/7）S +（1/5）Cu +（1/5）Ni +（1/4）Mo≤1.18]。版权所有（C）2013，JPO＆INPIT

2. 发明专利

JP2013067833A Free-cutting steel for cold-forging 有权
标题翻译：自由切削钢用于冷锻
公开(公告)号：JP2013067833A
公开(公告)日：2013-04-18
申请号：JP2011207092
申请日：2011-09-22
申请人： Nippon Steel & Sumitomo Metal Corp , 新日鐵住金株式会社
发明人： MATSUI NAOKI , WATARI KOJI , NEISHI YUTAKA , HIGASHIDA SHINJI , EGASHIRA MAKOTO , MATSUMOTO HITOSHI , SHIGA SATOSHI
IPC分类号： C22C38/00 , B21J5/00 , C21D8/06 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a free-cutting steel for cold-forging excellent in cuttability, cold forgeability, and hot forgeability.SOLUTION: The free-cutting steel for cold-forging contains, by mass, 0.10-0.60% C, 0.05-0.5% Si, 0.35-1.30% Mn, 0.03% or less P, 0.005 to less than 0.030% S, 0.01-2.0% Cr, more than 0.010 to 0.070% Al, 0.001-0.028% Ti, less than 0.0080% N, 0.0040% or less O, 0.0003-0.0035% Ca, and 0.0001 to less than 0.0040% Te and satisfies formulas (1) to (3): SA/SB>0.50 (1), 0.030
摘要翻译：要解决的问题：提供可切削性，冷锻性和热锻性优异的冷锻用自由切削钢。解决方案：用于冷锻的易切削钢质量含有0.10-0.60％的C，0.05-0.5％的Si，0.35-1.30％的Mn，0.03％或更少的P，0.005到小于0.030％的S ，0.01-2.0％的Cr，大于0.010至0.070％的Al，0.001-0.228％的Ti，小于0.0080％的N，0.0040％或更少的O，0.0003-0.0035％的Ca和0.0001至小于0.0040％的Te，并且满足式（1）〜（3）：SA / SB> 0.50（1），0.030

3. 发明专利

JP2013166983A Rolled steel bar for hot forging, hot forged roughly shaped material, and common rail and method for producing the same 有权
标题翻译：用于热锻的热轧钢棒，热锻成形材料和普通钢铁及其制造方法
公开(公告)号：JP2013166983A
公开(公告)日：2013-08-29
申请号：JP2012030158
申请日：2012-02-15
申请人： Nippon Steel & Sumitomo Metal Corp , 新日鐵住金株式会社 , Denso Corp , 株式会社デンソー
发明人： MATSUI NAOKI , HIGASHIDA SHINJI , MATSUMOTO HITOSHI , NEISHI YUTAKA , MAKINO TAIZO , MORITA KOJI , TANIMURA YOSHIHIRO , SAJIMA NAOYUKI , ITO TOSHIMASA
IPC分类号： C22C38/00 , C21D8/06 , C22C38/12 , C22C38/58
CPC分类号： C22C38/50 , B21K3/00 , C21D8/06 , C21D8/10 , C21D9/14 , C21D2211/004 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/22 , C22C38/24 , C22C38/28 , C22C38/46 , F02M63/0275
摘要： PROBLEM TO BE SOLVED: To provide an untempered rolled steel bar for hot forging excellent in machinability, fatigue strength, and a fracture toughness value, a hot forged roughly shaped material, and a common rail and a method for producing the same.SOLUTION: A rolled steel bar for hot forging has chemical composition which contains, in terms of mass%, 0.25-0.50% C, 0.40-1.0% Si, 1.0-1.6% Mn, 0.005-0.035% S, 0.005-0.050% Al, 0.10-0.30% V, and 0.005-0.030% N, with the remainder comprising Fe and impurities, the contents of P and O, among the impurities, being 0.035% or less and 0.0030% or less, respectively, and which has a value, represented by Fn1=C+Si/10+Mn/5+5Cr/22+1.65V-5S/7, of 0.90-1.20. When the width of nonmetallic inclusions in an R/2 part of a longitudinal section of the rolled steel bar is represented by W (μm) and the cumulative distribution function obtained by statistical processing of extreme values is 99.99%, then the estimated maximum width of the nonmetallic inclusions is 100 μm or less. The number density of a sulfide having an equivalent-circle diameter of 0.3-1.0 μm observed per unit area in an R/2 part of a transverse section of the rolled steel bar is 500 pieces/mmor more. Wherein, each chemical symbol for an element in formula represents a content (mass%) of each chemical symbol for an element.
摘要翻译：要解决的问题：提供一种用于热锻性，疲劳强度和断裂韧性值，热锻造的大致成形材料和共轨的未锻造的轧制钢棒及其制造方法。解决方案：A 化学成分含有以质量％计含有0.25-0.50％C，0.40-1.0％Si，1.0-1.6％Mn，0.005-0.035％S，0.005-0.050％Al，0.10- 0.30％V和0.005-0.030％N，其余为Fe和杂质，杂质中P和O的含量分别为0.035％以下且0.0030％以下，表示为 Fn1 = C + Si / 10 + Mn / 5 + 5Cr / 22 + 1.65V-5S / 7为0.90-1.20。当轧制钢筋的纵截面的R / 2部分中的非金属夹杂物的宽度由W（μm）表示，并且通过极值的统计处理获得的累积分布函数为99.99％时，估计的最大宽度非金属夹杂物为100μm以下。在轧制钢筋的横截面的R / 2部分中，每单位面积观察到的当量圆直径为0.3〜1.0μm的硫化物的密度为500个/ mm以上。其中，式中的元素的每个化学符号表示元素的每个化学符号的含量（质量％）。

4. 发明专利

JP2013147689A Carburized bearing steel material 有权
标题翻译：加固轴承钢材料
公开(公告)号：JP2013147689A
公开(公告)日：2013-08-01
申请号：JP2012007658
申请日：2012-01-18
申请人： Nippon Steel & Sumitomo Metal Corp , 新日鐵住金株式会社
发明人： ABE HIDEKI , MATSUMOTO HITOSHI , NEISHI YUTAKA , MATSUI NAOKI , NISHI TAKAYUKI , OKAYAMA ATSUSHI
IPC分类号： C22C38/00 , C21C7/00 , C21C7/06 , C21C7/064 , C21C7/10 , C22C38/38 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a rolled bearing steel material with excellent rolling fatigue life.SOLUTION: The carburized bearing steel material has a chemical composition including specific amounts of C, Si, Mn, P, S, Al, Cr, N and O, and the balance Fe and impurities, in which predicted √AREAof oxide and predicted √AREAof sulfide in 30,000 mm, which are obtained by performing measurement of maximum oxide diameter and maximum sulfide diameter in a length-directional vertical section 100 mmwith respect to 30 points thereof followed by calculation by means of extremal statistics processing, are 50 μm or less and 60 μm or less respectively, and the average aspect ratio of maximum oxide and maximum sulfide measured at the 30 points is 5.0 or less. The average composition of maximum oxide at the 30 points is composed of any one of specific 2-element to 4-element oxides with the contents being CaO: 2.0-20%, MgO: O-20%, SiO: 0-10%, and the balance AlO, and the average composition of maximum sulfide at the 30 points is composed of a 1-element sulfide with the content being CaS: 100%, or a specific 2-element or 3-element sulfide with CaS≥1.0%, MgS: 0-20%, and the balance MnS. The steel material may include specific amounts of Mn, Ni instead of a part of Fe.
摘要翻译：要解决的问题：提供具有优异的滚动疲劳寿命的滚动轴承钢材料。解决方案：渗碳轴承钢材料具有包括特定量的C，Si，Mn，P，S，Al，Cr，N和O的化学组成，余量为Fe和杂质，其中通过在长度方向垂直截面中测量最大氧化物直径和最大硫化物直径相对于30点来测量氧化物和预测的硫化物的预测值为30,000mm，然后通过极值统计处理的计算分别为50μm以下且60μm以下，在30点测定的最大氧化物和最大硫化物的平均纵横比为5.0以下。 30点处最大氧化物的平均组成由含量为CaO的特定2元素至4元素氧化物中的任一种组成：2.0-20％，MgO：O-20％，SiO：0-10％余量为AlO，30点最大硫化物的平均成分由CaS为100％的1元素硫化物，CaS≥1.0％的特定2元素或3元素硫化物组成， MgS：0-20％，余量为MnS。钢材可以包括特定量的Mn，Ni而不是Fe的一部分。

5. 发明专利

JP2013108129A Rolled steel bar for hot forging 有权
标题翻译：用于锻造的轧制钢棒
公开(公告)号：JP2013108129A
公开(公告)日：2013-06-06
申请号：JP2011253412
申请日：2011-11-21
申请人： Nippon Steel & Sumitomo Metal Corp , 新日鐵住金株式会社
发明人： HIGASHIDA SHINJI , MATSUMOTO HITOSHI , MATSUI NAOKI , NEISHI YUTAKA , MAKINO TAIZO
IPC分类号： C22C38/00 , C21D8/06 , C22C38/24 , C22C38/46
CPC分类号： C22C38/50 , B21J1/003 , B21J1/06 , B21J5/002 , C21D7/13 , C21D8/06 , C21D9/0075 , C21D2211/005 , C21D2211/009 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/28 , C22C38/42 , C22C38/44 , C22C38/46
摘要： PROBLEM TO BE SOLVED: To provide a rolled steel bar for hot forging, which is suitable as a base stock of a high-strength hot-forged component having an endurance ratio of 0.47 or more.SOLUTION: The rolled steel bar for hot forging contains 0.27-0.37% of C, 0.30-0.75% of Si, 1.00-1.45% of Mn, 0.008% or more and less than 0.030% of S, 0.05-0.30% of Cr, 0.005-0.050% of Al, 0.200-0.320% of V, and 0.0080-0.0200% of N, with the remainder comprising Fe and impurities, wherein [1.05≤C+(1/10)Si+(1/5)Mn+(5/22)Cr+1.65V-(5/7)S≤1.18]. The rolled steel bar for hot forging may contain one or more of Cu, Ni, and Mo in place of a portion of the Fe, provided that the following expression needs to be satisfied: [1.05≤C+(1/10)Si+(1/5)Mn+(5/22)Cr+1.65V-(5/7)S+(1/5)Cu+(1/5)Ni+(1/4)Mo≤1.18].
摘要翻译：要解决的问题：提供一种适合作为耐久性比为0.47以上的高强度热锻部件的基础材料的热锻轧制钢棒。
解决方案：用于热锻的轧制钢筋包含0.27-0.37％的C，0.30-0.75％的Si，1.00-1.45％的Mn，0.008％以上且小于0.030％的S，0.05-0.30％的Cr，0.005-0.050％的Al，0.200-0.320％的V和0.0080-0.0200％的N，其余的包括Fe和杂质，其中[1.05≤C+（1/10）Si +（1/5）Mn + （5/22）Cr + 1.65V-（5/7）S≤1.18]。用于热锻的轧制钢棒可以含有一种或多种Cu，Ni和Mo代替一部分Fe，条件是需要满足以下表达式：[1.05≤C+（1/10）Si +（1 /5)Mn+(5/22)Cr+1.65V-(5/7)S+(1/5)Cu+(1/5)Ni+(1/4)Mo≤1.18]。版权所有（C）2013，JPO＆INPIT

6. 发明专利

JP2013007098A Steel for hot-forging 有权
标题翻译：用于锻造的钢
公开(公告)号：JP2013007098A
公开(公告)日：2013-01-10
申请号：JP2011140311
申请日：2011-06-24
申请人： Nippon Steel & Sumitomo Metal Corp , 新日鐵住金株式会社
发明人： NISHITANI SHIGEFUMI , EGASHIRA MAKOTO , MATSUMOTO HITOSHI , MATSUI NAOKI
IPC分类号： C22C38/00 , B21J5/00 , C21D8/06 , C21D9/30 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a steel for hot-forging, which has excellent machinability and fatigue strength and hardly generates pseudo-pattern at the time of applying a magnetic particle testing.SOLUTION: The steel for hot-forging, has the composition comprising, by mass%, 0.30% to 0.005% to 0.10% Al, 0.01-1.0% Cr, 0.001% to 1.00...(1), wherein into each elemental symbol in the formula (1), the contents (mass%) of the corresponded elements are substituted.
摘要翻译：要解决的问题：提供一种用于热锻的钢，其具有优异的机械加工性和疲劳强度，并且在施加磁性颗粒测试时几乎不产生伪图案。解决方案：热锻钢，其组成按质量％计含有0.30％至0.60％C，0.10-0.90％Si，0.50-2.0％Mn，≤0.080％P，0.010-0.90％ S，> 0.005〜0.10％的Al，0.01〜1.0％的Cr，0.001〜0.040％的Ti，0.0003〜0.004％的Ca，0.0003〜0.040％的Te，0.0030〜0.020％的N，≤0.0050％的O，平衡Fe与杂质，满足公式（1），对应于硫化物夹杂物的圆的直径≤20μm。式（1）为Ca / Te> 1.00 ...（1），其中，在式（1）中的各元素中，代替对应元素的含量（质量％）。版权所有（C）2013，JPO＆INPIT

7. 发明专利

JP2013245363A Age-hardenable steel and method for manufacturing machine part 有权
标题翻译： AGE-HARDENABLE钢铁及其制造方法
公开(公告)号：JP2013245363A
公开(公告)日：2013-12-09
申请号：JP2012118220
申请日：2012-05-24
申请人： Nippon Steel & Sumitomo Metal Corp , 新日鐵住金株式会社
发明人： SUKETANI MASAHITO , MATSUI NAOKI , NEISHI YUTAKA , HIGASHIDA SHINJI , MATSUMOTO HITOSHI
IPC分类号： C22C38/00 , C21D8/06 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide an age-hardenable steel which has hardness of ≥325 HV and a fatigue strength of ≥390 MPa after aging treatment.SOLUTION: An age-hardenable steel includes 0.05-0.25% of C, 0.05-0.50% of Si, 1.2-2.5% of Mn, ≤0.05% of P, ≤0.10% of S, 0.20-1.5% of Cr, ≤0.06% of Al, 0.005-0.20% of Ti, 0.20-0.60% of V, and ≤0.015% of N, and includes, as occasion demands, at least one or more elements selected from among
摘要翻译：要解决的问题：提供老化处理后硬度≥325HV，疲劳强度≥390MPa的老化硬化钢。解决方案：老化硬化钢包括0.05-0.25％的C，0.05-0.50％的Si，1.2-2.5％的Mn，≤0.05％的P，≤0.10％的S，0.20-1.5％的Cr，≤0.06％的Al，0.005-0.20％的Ti，0.20-0.60％的V，以及 ≤0.015％的N，并且根据需要，包括选自以下的至少一种以上的元素：Mo：0.30％以下，B：≤0.005％，Cu：0.6％以下，Ni：0.6％以下，≤0.1％ Nb，≤0.005％的Ca和≤0.4％的Bi，余量为Fe和杂质，满足0.83≤C+ 0.3Mn +0.25Cr≤1.10,0.72≤C+ 0.1Si + 0.2Mn + 0.2Cr + 0.35 V≤0.90，V +Tieff≥0.33。

8. 发明专利

JP2017078209A 高強度ボルト及び高強度ボルト用鋼审中-公开
公开(公告)号：JP2017078209A
公开(公告)日：2017-04-27
申请号：JP2015206856
申请日：2015-10-21
申请人：新日鐵住金株式会社 , Nippon Steel & Sumitomo Metal
发明人： NARUMIYA HIROKI , MATSUI NAOKI , NEISHI YUTAKA , SENDA TETSUSHI
IPC分类号： C22C38/00 , C22C38/38 , F16B35/00
摘要：【課題】高い強度及び優れた耐水脆化特性を有する高強度ボルトを提供する。【解決手段】本発明による高強度ボルトは、質量%で、C:0.24〜0.40%、Si:0.01〜0.50%、Mn:0.5〜2.0%、P:0.020%以下、S:0.020%以下、Cr:0.2〜0.7%、Al:0.005〜0.050%、B:0.001〜0.005%、Ti:0.007〜0.100%、N:0.002〜0.008%、Nd:0.001〜0.100%、Nb:0〜0.050%、Mo:0〜0.30%、及び、V:0〜0.30%を含有し、残部がFe及び不純物からなる化学組成を有し、式(1)を満たす、高強度ボルト。[Psurf]−0.215Nd≦0.015 (1)ここで、[Psurf]には、表面から10μm深さまでの範囲における平均P濃度(質量%)が代入される。Ndには、Ndの含有量(質量%)が代入される。【選択図】図1

9. 发明专利

JP2014037592A Hot rolled steel bar or wire 有权
标题翻译：热轧钢条或线
公开(公告)号：JP2014037592A
公开(公告)日：2014-02-27
申请号：JP2012181539
申请日：2012-08-20
申请人： Nippon Steel & Sumitomo Metal , 新日鐵住金株式会社
发明人： USUI YUSUKE , OFUJI YOSHIHIRO , MATSUI NAOKI
IPC分类号： C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a hot rolled steel bar or a wire that has excellent cold workability after spheroidizing annealing, and can provide excellent surface fatigue strength to a component, a part or the whole of which is induction hardened after cold forging and which is tempered as required.SOLUTION: A hot rolled steel bar or a wire has a chemical composition comprising C:0.55-0.75%, Si:0.1-1.0%, Mn:0.3-1.5%, Cr:0.1-2.0%, S:0.002-0.05%, Al:0.01-0.2%, N:0.002-0.01% and the balance of Fe and impurities containing 0.025% or less of P and 0.002% or less of O, and satisfying: [2.5≤3Si+Mn+1.5Cr≤4.5]. In the structure of the hot rolled steel bar or the wire, a pearlite fraction is 90% or more, an average pearlite lamellar spacing is 150 to 300nm, and a standard deviation of the pearlite lamellar spacing is 25nm or less.
摘要翻译：要解决的问题：提供一种在球化退火之后具有优异的冷加工性的热轧钢筋或线材，并且可以对冷锻后的部件或部分或全部进行感应淬火提供优异的表面疲劳强度，其中根据需要回火。解决方案：热轧钢棒或线材具有C：0.55-0.75％，Si：0.1-1.0％，Mn：0.3-1.5％，Cr：0.1-2.0％，S： 0.002-0.05％，Al：0.01-0.2％，N：0.002-0.01％，余量为Fe和杂质含有0.025％以下的P和0.002％以下的O，满足：[2.5≤3Si+ Mn + 1.5Cr≤4.5。在热轧钢棒或丝的结构中，珠光体组分为90％以上，平均珠光体层间距为150〜300nm，珠光体层间距的标准偏差为25nm以下。

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