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1. 发明专利

JP2013213241A Bearing steel material having superior rolling fatigue characteristic and method for producing the same 有权
标题翻译：具有超级滚动疲劳特性的轴承钢材料及其制造方法
公开(公告)号：JP2013213241A
公开(公告)日：2013-10-17
申请号：JP2012083067
申请日：2012-03-30
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： KAIZUKA MASAKI , SHINTO YOSUKE , FUJITA MANABU
IPC分类号： C22C38/00 , C21D1/32 , C21D6/00 , C21D9/40 , C22C38/50 , F16C33/62
CPC分类号： C21D9/00 , C21D1/32 , C21D6/00 , C21D6/004 , C21D6/005 , C21D6/008 , C21D9/40 , C21D2201/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/50 , F16C33/62 , F16C33/64
摘要： PROBLEM TO BE SOLVED: To achieve a bearing steel material for obtaining a bearing component having further improved rolling fatigue life.SOLUTION: A bearing steel material satisfies a predetermined elemental composition and is characterized in that in a parent phase region (interface region) for 20 nm from the surface of spheroidized cementite, the contained Si (interface Si), Mn (interface Mn), Cr (interface Cr), Cu (interface Cu), Ni (interface Ni), and Mo (interface Mo) satisfy following formula (1): (1) 9.0≤1.4×interface Si + 1.8×interface Mn + 5.5×interface Cu + 4.2×interface Ni + 4.8×interface Cr + 5.5×interface Mo.
摘要翻译：要解决的问题：获得用于获得具有进一步提高的滚动疲劳寿命的轴承部件的轴承钢材料。解决方案：轴承钢材料满足预定的元素组成，其特征在于在20相的母相区域（界面区域）（界面Si），Mn（界面Mn），Cr（界面Cr），Cu（界面Cu），Ni（界面Ni）和Mo（界面Mo）均满足下列公式（ 1）：（1）9.0≤1.4×界面Si + 1.8×界面Mn + 5.5×界面Cu + 4.2×界面Ni + 4.8×界面Cr + 5.5×界面Mo。

2. 发明专利

JP2013185205A Steel component for case hardening 有权
标题翻译：用于硬化的钢组件
公开(公告)号：JP2013185205A
公开(公告)日：2013-09-19
申请号：JP2012050916
申请日：2012-03-07
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： SHINTO YOSUKE
IPC分类号： C22C38/00 , C21D1/06 , C21D8/06 , C21D9/32 , C21D9/40 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel component for case hardening, which is obtained hot-forged into a component shape, exhibiting excellent machinability, reduced in contents of Ni, Cr and Mo used conventionally as a hardenability enhancing element, and capable of enhancing a strength after carbonization-hardeneing treatment.SOLUTION: This steel component for case hardening is a steel component for case hardening after hot-forging, into a component shape, steel containing C, Si, Mn, P, S, Cu, Ni, Cr, Al, N, B, Ti and O, and the remainder comprising iron and inevitable impurities, and a metal texture satisfies the condition of 35-70 area% of ferrite, 30-65 area% of pearlite, and 5 area% or less (including 0 area%) of bainite, in the bar steel for case hardening.
摘要翻译：要解决的问题：提供一种热锻成型成形的表面硬化用钢成分，其机械加工性优异，作为淬透性增强元素常用的Ni，Cr，Mo的含量降低，能够提高碳化 - 硬化处理后的强度。解决方案：这种用于表面硬化的钢部件是热锻后的表面硬化的钢部件，成分为C，Si，Mn，P，S，Cu，Ni，Cr ，Al，N，B，Ti和O，其余为铁和不可避免的杂质，金属质感满足铁素体35-70面积％，珠光体30-65面积％，面积％以下的条件（包括0面积％）贝氏体，钢筋用于表面硬化。

3. 发明专利

JP2007308772A Carburized parts and manufacturing method therefor 有权
标题翻译：加固部件及其制造方法
公开(公告)号：JP2007308772A
公开(公告)日：2007-11-29
申请号：JP2006139795
申请日：2006-05-19
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： SHINTO YOSUKE , NAGAHAMA MUTSUHISA
IPC分类号： C22C38/00 , C21D1/06 , C21D9/32 , C21D9/40 , C22C38/38 , C22C38/60 , C23C8/20
摘要： PROBLEM TO BE SOLVED: To provide carburized parts having extremely superior bending fatigue characteristics, and to provide a method for manufacturing such carburized parts.
SOLUTION: The base metal comprises, by mass%, 0.05 to 0.3% C, more than 0.35% but 2% or less Si, 3% or less Mn (excluding 0%), 2% or less Cr (excluding 0%), 0.1% or less Al (excluding 0%), 0.03% or less N (excluding 0%), 0.03% or less P, 0.03% or less S, 0.002% or less O, and the balance Fe with unavoidable impurities. The carburized parts have a carburized layer which contains 0.9% or more C, has a structure containing cementite and bainite, and has the maximum hardness of 650 Hv or higher.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供具有非常优异的弯曲疲劳特性的渗碳部件，并提供制造这种渗碳部件的方法。解决方案：贱金属以质量％计含有0.05〜0.3％C，超过0.35％但2％以下的Si，3％以下的Mn（不含0％），2％以下的Cr（不包括0 ％），0.1％以下Al（不含0％），0.03％以下N（不含0％），0.03％以下P，0.03％以下S，0.002％以下O，余量为Fe，不可避免的杂质。渗碳部分具有含有0.9％以上C的渗碳层，具有包含渗碳体和贝氏体的结构，并且具有650Hv以上的最大硬度。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2006299296A Rolled bar steel for case hardening having excellent fatigue property and crystal grain coarsening resistance, and method for producing the same 有权
标题翻译：用于具有优异的疲劳性能和晶体颗粒耐磨性的壳体硬化的轧制棒钢及其生产方法
公开(公告)号：JP2006299296A
公开(公告)日：2006-11-02
申请号：JP2005118366
申请日：2005-04-15
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： SHINTO YOSUKE
IPC分类号： C22C38/00 , C21D8/06 , C22C38/38 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a rolled bar steel for case hardening giving a case hardened component which has excellent crystal grain coarsening prevention effect even in the case carburizing is performed at a temperature higher than that in the conventional example for performing carburizing or carbonitriding treatment in a shorter period of time as the stock for a bar-shaped machine component such as a pulley for a CVT (Continuously Variable Transmission) requiring carburizing depth, has reduced dimensional strain upon case hardening treatment, thus has excellent dimensional precision, and has excellent fatigue properties as well.
SOLUTION: The rolled bar steel for case hardening is composed of a steel in which the contents of N, Al, Nb, Ti, Ca or the like are specified, and, the steel conyains, as oxide based inclusions, the three multiple oxide based inclusions of CaO, Al
2 O
3 , SiO
2 . Among the multiple inclusions, the number of the ones satisfying the compositional ratio of 5 to 50% CaO, 5 to 50% Al
2 O
3 and 25 to 75% SiO
2 accounts for ≥70% of the number of all the oxide based inclusions, and the number of the inclusions satisfying >50 to 100% Al
2 O
3 is ≤10% by an occupancy ratio in the number of all the oxide based inclusions.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种用于表面硬化的轧制棒钢，即使在高于用于渗碳的常规实施例的温度下进行渗碳的情况下，也提供具有优异的晶粒粗化防止效果的表面硬化组分或作为需要渗碳深度的CVT（连续变速传动）用带轮等的棒状机械部件的坯料在较短的时间内进行碳氮共渗处理，因此具有优异的尺寸精度，并具有优异的疲劳性能。解决方案：用于表面硬化的轧制钢筋由规定了N，Al，Nb，Ti，Ca等的含量的钢组成，钢被作为氧化物系夹杂物，多种氧化物基夹杂物，CaO，Al O 3，SB <3> SB。在多个夹杂物中，满足组合比为5〜50％的CaO，5〜50％的Al 2 3 和25〜75％ SB> 2 占所有氧化物系夹杂物的数量的≥70％，并且满足> 50〜100％Al 2 <3> 的所有氧化物系夹杂物的占有率为≤10％。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JP2006161144A Carburizing rolled steel having excellent high temperature carburizing property and hot forgeability 有权
标题翻译：加工具有优良高温加固性能的热轧钢和高强度钢
公开(公告)号：JP2006161144A
公开(公告)日：2006-06-22
申请号：JP2004358667
申请日：2004-12-10
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： MURAKAMI TOSHIO , HATANO HITOSHI , SHINTO YOSUKE
IPC分类号： C22C38/00 , C21D8/06 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a carburizing rolled steel which can exhibit excellent grain coarsening prevention effect and also has low hot deformation resistance and excellent hot forgeability even when subjected to carburizing at a temperature higher than before in order to perform carburizing or carbo-nitriding treatment in a shorter period of time when the carburizing rolled steel is used as a stock for bar-shaped machine parts such as a pulley for a CVT requiring carburizing depth and excellent hot forgeability.
SOLUTION: The carburizing rolled steel having excellent high temperature carburizing properties and hot forgeability is composed of a rolled steel in which the contents of C, Si, Mn or the like are specified and the contents of N, Al, Nb and Ti are also specified, and regarding its microstructure, the area ratio of ferrite+pearlite is ≥90%, and also, the ferrite grain size number is ≤11.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够表现出优异的晶粒粗化防止效果的渗碳轧制钢，即使在比以前更高的温度下进行渗碳以进行渗碳或者也可以具有优异的耐热变形性和优异的热锻性当渗碳轧制钢用作用于需要渗碳深度和优异的热锻造性的CVT的带轮的条形机器部件的坯料时，在更短的时间内进行碳氮化处理。解决方案：具有优异的高温渗碳性能和热锻造性的渗碳轧制钢由规定C，Si，Mn等含量且N，Al，Nb和Ti的含量的轧制钢构成并且对于其组织，铁素体+珠光体的面积比≥90％，铁素体晶粒数≤11。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2004107694A Carburizing steel material and carburized component 有权
公开(公告)号：JP2004107694A
公开(公告)日：2004-04-08
申请号：JP2002268447
申请日：2002-09-13
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： SHINTO YOSUKE , KAKO HIROSHI , KINEBUCHI MASAO
IPC分类号： C23C8/22 , C22C38/00 , C22C38/06 , C22C38/60 , C23C8/32 , C23C8/46 , C23C8/66
摘要： PROBLEM TO BE SOLVED: To provide a carburized (or carbonitrided) component having superior torsion fatigue strength together with high machinability, which can be used in components of a driving system for an automobile having parts of a complicated form such as shafts, and to provide a carburizing steel material for manufacturing the component.
SOLUTION: The steel material has a chemical composition comprising, by mass, 0.1-0.4% C, 0.1-2.0% Mn, 0.6% or less Si, 0.015% or less P, 0.1% or less S, 0.01-0.1% Al, 0.003-0.02% N and the balance substantially Fe; and includes particles of inclusion with major axes of 3μm or longer and a mean aspect ratio of 6.0 or less, so as to occupy an area rate of 0.6% or less, on a cross section parallel to the rolling direction of the steel material, through adjusting a cooling rate in casting the steel material, and a heating temperature, a finishing temperature, a rolling reduction and the like in hot rolling (or hot forging).
COPYRIGHT: (C)2004,JPO

7. 发明专利

JP2002194480A STEEL HAVING EXCELLENT MACHINABILITY AND COLD WORKABILITY AND MACHINE PARTS 失效
公开(公告)号：JP2002194480A
公开(公告)日：2002-07-10
申请号：JP2000389306
申请日：2000-12-21
申请人： KOBE STEEL LTD
发明人： SOMEKAWA MASAMI , SHIKAISO MASATO , SHINTO YOSUKE , KAKO HIROSHI , SAKAMOTO KOICHI
IPC分类号： C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To improve machinability of steel applied to steel subjected to machining after cold working while maintaining its excellent cold workability. SOLUTION: The steel contains, by mass, 0.0005 to 0.02% Mg and 0.003 to 0.07% S. Further, the atomic ratio of Mg to S in sulfides present in the longitudinal cross-sectional area of 0.5 mm×0.5 mm in the rolling stock is 0.01 to 0.20 on the average, and the ratio of the sulfides with a length of >=50 μm present in the longitudinal cross-sectional area occupying in all the sulfides satisfies

8. 发明专利

JP2002080951A METHOD FOR PRODUCING GALVANNEALED STEEL SHEET 失效
公开(公告)号：JP2002080951A
公开(公告)日：2002-03-22
申请号：JP2000272073
申请日：2000-09-07
申请人： KOBE STEEL LTD
发明人： IKEDA CHIKAYUKI , MAKII KOICHI , SHINTO YOSUKE , AKAMIZU HIROSHI , HASHIMOTO SHUNICHI
IPC分类号： C23C2/06 , C21D9/46 , C22C38/00 , C22C38/58 , C23C2/28
摘要： PROBLEM TO BE SOLVED: To provide a profitable method for producing a galvannealed steel sheet excellent in the strength-ductility balance and plating characteristic and suitable to a blank for car, electric device, machine field, etc. SOLUTION: The steel sheet containing at least 0.05 mass% C and Mn, Si is cooled once to the temperature zone of a room temperature-a galvanizing bath temperature after annealing in the temperature zone of Ac1 point - Ac3 point. Successively, after galvanizing in the galvanizing bath, the alloying treatment is performed in the temperature zone of Ac1 point - Ac3 point.

9. 发明专利

JP2000313936A GALVANNEALED STEEL SHEET EXCELLENT IN DUCTILITY AND PRODUCTION THEREOF 失效
公开(公告)号：JP2000313936A
公开(公告)日：2000-11-14
申请号：JP11994299
申请日：1999-04-27
申请人： KOBE STEEL LTD
发明人： IKEDA CHIKAYUKI , MAKII KOICHI , SHINTO YOSUKE , HASHIMOTO SHUNICHI , KAJIMA TAKAHIRO
IPC分类号： C23C2/06 , C21D8/02 , C21D9/46 , C22C38/00 , C22C38/04 , C22C38/06 , C22C38/14 , C23C2/02 , C23C2/28
摘要： PROBLEM TO BE SOLVED: To provide a P and Ti-addition galvannealed steel sheet provided with excellent ductility and a producing method thereof. SOLUTION: This galvannealed steel sheet has chemical components by wt.% of

10. 发明专利

JP2000234129A STEEL SHEET FOR HOT DIP GALVANIZING, AND ITS PRODUCTION 失效
公开(公告)号：JP2000234129A
公开(公告)日：2000-08-29
申请号：JP3130199
申请日：1999-02-09
申请人： KOBE STEEL LTD
发明人： MAKII KOICHI , IKEDA CHIKAYUKI , SHINTO YOSUKE , KAJIMA TAKAHIRO , HASHIMOTO SHUNICHI
IPC分类号： C21D9/46 , C21D9/48 , C22C38/00 , C22C38/16
摘要： PROBLEM TO BE SOLVED: To increase tensile strength and to improve plating characteristic by incorporating specific amounts of C, Mn, Mo, Si, Al, Ni, and Cu, regulating the volume ratio of retained austenite to a specific value or above, and also regulating the contents of respective elements and the ferrite fraction so that they satisfy a specific relationship. SOLUTION: The steel sheet has a composition containing, by mass, 0.03-0.23% C, 0.5-1.8%, in total, of Si and/or Al and 0.3-2%, in total, of Ni and/or Cu. The amount of retained austenite is regulated to >=2 vol.%. Moreover, the MSO value ( deg.C) defined by equation I is regulated to -100 to 100 deg.C, and respective contents of Si, Mn, Ni, Cu, and Mo satisfy inequality II. In the equation I, Vα means ferrite fraction (the total fraction of polygonal ferrite and ferrite in bainite); and the content of each element in the equation and inequality is represented by mass%.

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