Steel product for induction hardening, induction-hardened member using the same, and methods for production them
    1.
    发明申请
    Steel product for induction hardening, induction-hardened member using the same, and methods for production them 审中-公开
    用于感应淬火的钢制品,使用其的感应淬火部件及其制造方法

    公开(公告)号:US20070000582A1

    公开(公告)日:2007-01-04

    申请号:US10555511

    申请日:2004-07-16

    IPC分类号: C21D1/10

    摘要: The present invention provides a steel material for induction quenching, containing 0.3% to 0.7% of C, 1.1% or less of Si, 0.2% to 1.1% of Mn, 0.05% to 0.6% of Mo, 0.06% or less of S, 0.025% or less of P, 0.25% or less of Al, 0.3% or less of Cr on a mass basis, and the balance being Fe and unavoidable impurities. The steel material has a ferrite structure and a pearlite structure, the total volume fraction of the ferrite structure and the pearlite structure is 90% or more, the thickness of the ferrite structure is 30 μm or less, and the average prior austenite grain diameter of a hard layer obtained by induction quenching is 12 μm or less. Since having superior machinability and superior fatigue strength after induction quenching, this steel material is suitable, for an automobile drive shaft, constant velocity joint, and the like.

    摘要翻译: 本发明提供一种用于感应淬火的钢材,其含有C:0.3〜0.7%,Si为1.1%以下,Mn为0.2〜1.1%,Mo为0.05〜0.6%,S为0.06%以下, 0.025%以下的P,0.25%以下的Al,0.3%以下的Cr,其余为Fe和不可避免的杂质。 该钢材具有铁素体结构和珠光体组织,铁素体组织和珠光体组织的总体积分数为90%以上,铁素体组织的厚度为30μm以下,前者的奥氏体平均粒径为 通过感应淬火得到的硬质层为12μm以下。 由于在感应淬火后具有优异的机械加工性和优异的疲劳强度,因此该钢材适用于汽车传动轴,等速万向接头等。

    Steel parts for machine structure, material therefor, and method for manufacture thereof
    2.
    发明申请
    Steel parts for machine structure, material therefor, and method for manufacture thereof 审中-公开
    用于机器结构的钢件,其材料及其制造方法

    公开(公告)号:US20060196583A1

    公开(公告)日:2006-09-07

    申请号:US10556298

    申请日:2004-07-16

    IPC分类号: C22C38/14

    摘要: The present invention provides a machine structural part composed of 0.3% to 0.7% of C, 0.30% or less of Si, 0.2% to 2.0% of Mn, 0.005% to 0.25% of Al, 0.005% to 0.1% of Ti, 0.05% to 0.6% of Mo, 0.0003% to 0.006% of B, 0.06% or less of S, 0.020% or less of P, 0.0030% or less of O on a mass basis, and the balance being Fe and unavoidable impurities. In addition, the machine structural part has a hard layer on at least a part of a surface thereof formed by induction quenching, an average prior austenite grain diameter of the hard layer is 7 μm or less, and the maximum diameter of a non-metal inclusion composed of oxides is 15 μm or less. Since having a high fatigue strength, this machine structural part is suitable for an automobile drive shaft, constant velocity joint, and the like.

    摘要翻译: 本发明提供一种机械结构部件,其由C:0.3%〜0.7%,Si:0.30%以下,Mn:0.2〜2.0%,Al:0.005〜0.25%,Ti:0.005〜0.1% Mo:0.000〜0.6%,B:0.06%以下,S:0.06%以下,P:0.020%以下,O:0.0030%以下,余量为Fe和不可避免的杂质。 此外,机械结构部件在其通过感应淬火形成的表面的至少一部分上具有硬质层,硬质层的平均先前的奥氏体晶粒直径为7μm以下,非金属的最大直径 由氧化物构成的包合物为15μm以下。 由于具有高的疲劳强度,该机械结构部件适用于汽车传动轴,等速万向节等。

    Steel For Machine Structural Use With Excellent Strength, Ductility, And Toughness And Method For Producing The Same
    4.
    发明申请
    Steel For Machine Structural Use With Excellent Strength, Ductility, And Toughness And Method For Producing The Same 审中-公开
    钢结构使用优良的强度,延性和韧性及其生产方法

    公开(公告)号:US20080017283A1

    公开(公告)日:2008-01-24

    申请号:US11795192

    申请日:2006-06-30

    IPC分类号: C21D9/46 C22C38/00

    CPC分类号: C21D9/46 C22C38/00

    摘要: A steel for machine structural use with a better strength-ductility-toughness balance than maraging steel and applications thereof are provided. The steel for machine structural use with excellent strength, ductility, and toughness contains, in percent by mass, more than 0.30% to 0.5% of carbon, 1.0% or less of silicon, 1.5% or less of manganese, 0.025% or less of aluminum, 0.3% to 0.5% of molybdenum, and 0.0005% to 0.01% of boron, and the balance is iron and incidental impurities. The steel has a structure including at least 90% by volume of martensitic structure. The martensitic structure includes blocks having a size of 1.5 μm or less. Dissolved boron is contained in an amount of at least 0.0005% and is present at boundaries of prior austenite grains in a concentration at least 1.5 times that in the prior austenite grains.

    摘要翻译: 提供了一种具有比马氏体时效钢更好的强度 - 延性 - 韧性平衡的机械结构用钢及其应用。 具有优异的强度,延展性和韧性的机械结构用钢,以质量%计含有超过0.30%〜0.5%的碳,1.0%以下的硅,1.5%以下的锰,0.025%以下的 铝,0.3〜0.5%的钼和0.0005〜0.01%的硼,余量为铁和杂质。 该钢具有至少90体积%的马氏体组织。 马氏体结构包括尺寸为1.5μm或更小的块。 溶解硼的含量至少为0.0005%,并且在现有奥氏体晶粒的边界处,其浓度至少为现有奥氏体晶粒中的1.5倍。

    Steel product for induction hardening, induction-hardened member using the same, and methods producing them
    5.
    发明申请
    Steel product for induction hardening, induction-hardened member using the same, and methods producing them 失效
    用于感应淬火的钢制品,使用其的感应淬火部件及其制造方法

    公开(公告)号:US20060162823A1

    公开(公告)日:2006-07-27

    申请号:US10526916

    申请日:2004-01-13

    IPC分类号: C21D1/10

    摘要: The present invention provides a steel product that consists of, by mass %, C: 0.35-0.7%, Si: 0.30-1.1%, Mn: 0.2-2.0%, Al: 0.005-0.25%, Ti: 0.005-0.1%, Mo: 0.05-0.6%, B: 0.0003-0.006%, S: 0.06% or less, P: 0.02% or less, Cr: 0.2% or less, and the balance Fe and inevitable impurities, and has a structure of bainite and/or martensite, the total volume fraction of bainite and martensite being 10% or more, and an induction hardened member that is made of the steel product having a hardened surface layer formed by induction hardening and has a prior austenite grain size of 12 μm or less through the layer thickness. The member has high fatigue strength and therefore is suitable for an automobile drive shaft, an automobile constant velocity joint or the like.

    摘要翻译: 本发明提供以质量%计含有C:0.35〜0.7%,Si:0.30〜1.1%,Mn:0.2〜2.0%,Al:0.005〜0.25%,Ti:0.005〜0.1% Mo:0.05〜0.6%,B:0.0003〜0.006%,S:0.06%以下,P:0.02%以下,Cr:0.2%以下,余量为Fe和不可避免的杂质,具有贝氏体和 /或马氏体,贝氏体和马氏体的总体积分数为10%以上,以及由具有硬化表面层的钢制品的感应淬火构件,所述硬化表面层通过感应淬火形成,并且具有12μm的原奥氏体粒径, 较少穿过层厚度。 该构件具有高的疲劳强度,因此适用于汽车传动轴,汽车等速万向接头等。

    Steel product for induction hardening, induction-hardened member using the same, and methods producing them
    6.
    发明授权
    Steel product for induction hardening, induction-hardened member using the same, and methods producing them 失效
    用于感应淬火的钢制品,使用其的感应淬火部件及其制造方法

    公开(公告)号:US07678207B2

    公开(公告)日:2010-03-16

    申请号:US10526916

    申请日:2004-01-13

    IPC分类号: C21D1/10

    摘要: We provide a steel product that includes, by mass %, C: 0.35-0.7%, Si: 0.30-1.1%, Mn: 0.2-2.0%, Al: 0.005-0.25%, Ti: 0.005-0.1%, Mo: 0.05-0.6%, B: 0.0003-0.006%, S: 0.06% or less, P: 0.02% or less, Cr: 0.2% or less, and the balance Fe and inevitable impurities, and has a structure of bainite and/or martensite, the total volume fraction of bainite and martensite being 10% or more, and an induction hardened member that is made of the steel product having a hardened surface layer formed by induction hardening and has a prior austenite grain size of 12 μm or less through the layer thickness. The member has high fatigue strength and therefore is suitable for an automobile drive shaft, an automobile constant velocity joint or the like.

    摘要翻译: 我们提供一种钢产品,其质量%包括C:0.35-0.7%,Si:0.30-1.1%,Mn:0.2-2.0%,Al:0.005-0.25%,Ti:0.005-0.1%,Mo:0.05 -0.6%,B:0.0003-0.006%,S:0.06%以下,P:0.02%以下,Cr:0.2%以下,余量为Fe和不可避免的杂质,具有贝氏体和/或马氏体的结构 贝氏体和马氏体的总体积分率为10%以上,以及由具有通过感应淬火形成的硬化表面层的钢制品的感应淬火构件,并且通过该方法具有12μm以下的奥氏体晶粒尺寸 层厚度。 该构件具有高的疲劳强度,因此适用于汽车传动轴,汽车等速万向接头等。

    High-Strength Steel and Metal Bolt Excellent In Character of Delayed Fracture
    7.
    发明申请
    High-Strength Steel and Metal Bolt Excellent In Character of Delayed Fracture 审中-公开
    高强度钢和金属螺栓优良延迟断裂性质

    公开(公告)号:US20080264524A1

    公开(公告)日:2008-10-30

    申请号:US11922746

    申请日:2006-10-27

    IPC分类号: C22C38/54

    摘要: A high-strength steel having excellent character of delayed fracture can be manufactured at a low cost without adding expensive alloy elements such as Ni, Co or V in large quantities. The steel including a steel microstructure in which a ratio of martensite phase is 90% or more and a diameter of prior austenite grains is 10 μm or less, the steel microstructure being made by hardening and then tempering at 100° C. to 400° C., the steel including C: more than 0.30% and not more than 0.50% by mass, Si: not more than 1.0% by mass, Mn: not more than 1.5% by mass, Ti: not more than 0.1% by mass, Mo: not less than 0.3% and not more than 0.50% by mass, B: not less than 0.0005% and not more than 0.01% by mass, and a balance composed of Fe and inevitable impurities.

    摘要翻译: 可以以低成本制造具有优异延迟断裂特性的高强度钢,而不需要大量添加诸如Ni,Co或V的昂贵的合金元素。 包括马氏体相的比率为90%以上,原奥氏体晶粒直径为10μm以下的钢组织的钢,钢组织通过硬化然后在100℃回火至400℃ 包括C:大于0.30%且不大于0.50质量%的钢,Si:不大于1.0质量%,Mn:不大于1.5质量%,Ti:不大于0.1质量% Mo:0.3%以上且0.50质量%以下,B:0.0005%以上且0.01质量%以下,余量由Fe和不可避免的杂质构成。

    Impact resistant structure for the helicopter and energy absorber used for the same
    9.
    发明授权
    Impact resistant structure for the helicopter and energy absorber used for the same 有权
    用于直升机和能量吸收器的抗冲击结构相同

    公开(公告)号:US06959894B2

    公开(公告)日:2005-11-01

    申请号:US10724186

    申请日:2003-12-01

    申请人: Tohru Hayashi

    发明人: Tohru Hayashi

    摘要: An impact resistant structure of a helicopter having an energy absorber positioned under a floor of the helicopter and directly connected to a cabin frame of the helicopter. The energy absorber is arranged in accordance with a distribution of a ground reaction force on a general ground at a time of crash situation. The energy absorber also includes a plurality of independent hollow tubes of fiber reinforced composite material integrally formed by bundling only the hollow tubes. The hollow tubes are arranged so as to reduce a number of intersecting wall surfaces of the hollow tubes.

    摘要翻译: 具有能量吸收器的直升机的抗冲击结构,该能量吸收器位于直升机的地板下方并且直接连接到直升机的舱架。 能量吸收器根据碰撞时的一般地面上的地面反作用力的分布进行排列。 能量吸收器还包括多个独立的纤维增强复合材料的中空管,其通过仅捆扎中空管而一体地形成。 中空管被布置成减少中空管的相交的壁表面的数量。

    Method of manufacturing thick steel product of high strength and high
toughness having excellent weldability and minimal variation of
structure and physical properties
    10.
    发明授权
    Method of manufacturing thick steel product of high strength and high toughness having excellent weldability and minimal variation of structure and physical properties 失效
    制造具有优异的焊接性和最小的结构和物理变化的高强度和高韧性的厚钢产品的方法

    公开(公告)号:US5989366A

    公开(公告)日:1999-11-23

    申请号:US816418

    申请日:1997-03-14

    CPC分类号: C22C38/04 C21D8/0226

    摘要: A method of manufacturing a thick steel product of high strength and high toughness having excellent weldability with minimal variation of material properties, comprises heating a steel raw material to the temperature of Ac.sub.3 to 1350.degree. C., hot rolling and then cooling at the cooling rate of 10.degree. C./sec. or less. The steel raw material has the following composition:C: 0.001-0.25 wt %;Mn: 1.0-3.0 wt %;Ti: 0.005-0.20 wt %;Nb: 0.005-0.20 wt %;B: 0.0003-0.0050 wt %; andAl: 0.01-0.100 wt %balance substantially Fe and incidental impurities. The composition has a transformation start temperature (Bs) of 670.degree. C. or less. Since the steel product obtained by the method has no variation in physical properties regardless of variation in cooling rate, it is possible to supply steel products of high strength and high toughness which have uniform microstructure and properties along their thickness direction and are excellent in weldability.

    摘要翻译: 一种制造具有优异的焊接性和优异的材料特性的高强度和高韧性的粗钢产品的方法包括将钢原料加热至Ac 3至1350℃的温度,然后以冷却速度冷却,然后冷却 为10℃/秒。 或更少。 钢原料具有以下组成:C:0.001-0.25重量%; Mn:1.0-3.0重量% Ti:0.005〜0.20重量% Nb:0.005-0.20重量% B:0.0003-0.0050重​​量% 和Al:0.01-0.100重量%,基本上为Fe和附带的杂质。 组合物的转变开始温度(Bs)为670℃以下。 由于通过该方法获得的钢产品与冷却速度的变化无关,物理性质没有变化,因此可以提供具有均匀的组织和性能的厚度方向的高强度,高韧性的钢产品,并且焊接性优异。