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1. 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％）。

2. 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。

3. 发明专利

JP2013112861A Steel bar for bearing 有权
标题翻译：用于轴承的钢棒
公开(公告)号：JP2013112861A
公开(公告)日：2013-06-10
申请号：JP2011260698
申请日：2011-11-29
申请人： Nippon Steel & Sumitomo Metal Corp , 新日鐵住金株式会社
发明人： NEISHI YUTAKA , MATSUMOTO HITOSHI , HIGASHIDA SHINJI , ABE HIDEKI , NISHI TAKAYUKI , OKAYAMA ATSUSHI
IPC分类号： C22C38/00 , C21C7/00 , C21C7/10 , C21D8/06 , C22C38/18 , C22C38/50 , F16C33/61
摘要： PROBLEM TO BE SOLVED: To provide a steel bar for bearings, which is excellent in rolling fatigue life and can be cold-forged as rolled.SOLUTION: The steel bar for bearings of a chemical composition comprising C, Si, Mn, P, S, Cr, Al, Ca, and O each by a specified amount with the balance being Fe and impurities, is characterized in that the predicted maximum width of the inclusion is not greater than 20 μm and predicted maximum length thereof is not greater than 800 μm in the predicted volume of 144 mm, each obtained by applying statistics of extremes to the inclusion present at the starting point of fracture appearing in an ultrasonic fatigue test; if the inclusion present at the start point of fracture is an oxide, the oxide is one of specific binary, ternary and quaternary oxides of a mean composition comprising CaO: 2.0 to 20%, MgO: 0 to 20%, and SiO: 0 to 10% with the balance being AlO; if the inclusion present at the starting point of fracture is a sulfide, the sulfide is a mono-component sulfide, namely CaS of a mean composition comprising CaS: 100%, or a specific binary sulfide or ternary sulfide of a mean composition comprising CaS: at least 1.0% and MgS: 0 to 20% with the balance being MnS; and the maximum hardness from the surface of the steel bar to the position of R/2 is not greater than 290 by Vickers hardness.
摘要翻译：要解决的问题：提供一种滚动疲劳寿命优异的轴承用钢筋，可以冷轧成型。解决方案：包含C，Si，Mn，P，S，Cr，Al，Ca和O的化学组成的轴承钢棒，其特征在于指定量，余量为Fe和杂质，其特征在于：预测的144mm 3 的体积中，夹杂物的预测最大宽度不大于20μm，预测的最大长度不大于800μm，每个通过应用统计在超声波疲劳试验中出现的断裂起点处的夹杂物的极限; 如果存在于断裂起点处的包合物是氧化物，则氧化物是平均组成的特定的二元，三元和四元氧化物之一，其包含CaO：2.0〜20％，MgO：0〜20％，SiO 2 ：0到10％，余额为A1 2 O 3 ; 如果存在于断裂起点处的包含物是硫化物，则硫化物是单组分硫化物，即包含CaS：100％的平均组成的CaS，或包含CaS的平均组成的特定的二元硫化物或三元硫化物：至少1.0％，MgS：0〜20％，余量为MnS; 并且通过维氏硬度从钢筋表面到R / 2的最大硬度不大于290。版权所有（C）2013，JPO＆INPIT

4. 发明专利

JP2014015632A Bearing steel 有权
标题翻译：轴承钢
公开(公告)号：JP2014015632A
公开(公告)日：2014-01-30
申请号：JP2012151619
申请日：2012-07-05
申请人： Nippon Steel & Sumitomo Metal , 新日鐵住金株式会社
发明人： NEISHI YUTAKA , YAMAMOTO JUNYA , MATSUMOTO HITOSHI , HIGASHIDA SHINJI , ABE HIDEKI
IPC分类号： C22C38/00 , C21C7/04 , C22C38/18 , F16C33/44
摘要： PROBLEM TO BE SOLVED: To provide a bearing steel capable of realizing an excellent rolling fatigue life as a bearing component.SOLUTION: The bearing steel has a chemical composition comprising 0.95 to 1.2% C, 0.15 to 0.35% Si, 0.05 to 0.5% Mn, 0.025% or less P, 0.010% or less S, 0.80 to 1.80% C, above 0.005% to 0.040% Al, 0.0003 to 0.0012% Ca and 0.0010% or less O, and the balance Fe with impurities and satisfying [0.70≤Ca/O≤1.80], [Ca/O≥1250S-5.80] and [20≤Mn/S≤170].
摘要翻译：要解决的问题：提供一种能够实现作为轴承部件的良好的滚动疲劳寿命的轴承钢。解决方案：轴承钢具有包含0.95〜1.2％的C，0.15〜0.35％的Si，0.05〜0.5％的Mn ，0.025％以下的P，0.010％以下的S，0.80〜1.80％的C，0.005〜0.040％的Al，0.0003〜0.0012％的Ca和0.0010％以下的O，余量为Fe的杂质满足[0.70≤ Ca /O≤1.80]，[Ca /O≥1250S-5.80]和[20≤Mn/S≤170]。

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

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

7. 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

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