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    MARTENSITE TYPE HOT FORGING USE NON HEAT-TREATED STEEL AND HOT FORGED NON HEAT-TREATED STEEL PART
    1.
    发明申请
    MARTENSITE TYPE HOT FORGING USE NON HEAT-TREATED STEEL AND HOT FORGED NON HEAT-TREATED STEEL PART 有权
    马氏体型热锻使用非热处理钢和热锻非热处理钢部件

    公开(公告)号：US20100183473A1

    公开(公告)日：2010-07-22

    申请号：US12311821

    申请日：2008-10-27

    申请人： Shinya Teramoto ,  Kei Miyanishi ,  Masayuki Hashimura

    发明人： Shinya Teramoto ,  Kei Miyanishi ,  Masayuki Hashimura

    IPC分类号： C22C38/60 ,  C22C38/06 ,  C22C38/18 ,  C22C38/22

    CPC分类号： C22C38/38 ,  C21D1/25 ,  C21D7/13 ,  C21D8/06 ,  C21D2211/004 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32

    摘要： The present invention provides hot forging use non heat-treated steel where controlled cooling after shaping by hot forging is used to make the main structure of the steel martensite even without subsequent reheating and heat treatment by quenching and tempering and thereby give a steel part with a high strength and high toughness and superior machineability and a hot forged non heat-treated steel part made of that steel, in particular provides a martensite type hot forging use non heat-treated steel characterized by containing, by mass %, C: 0.10 to 0.20%, Si: 0.10 to 0.50%, Mn: 1.0 to 3.0%, P: 0.001 to 0.1%, S: 0.005 to 0.8%, Cr: 0.10 to 1.50%, Al: over 0.1 to 0.20%, and N: 0.0020 to 0.0080% and having a balance of substantially Fe and unavoidable impurities and a hot forged non heat-treated steel part made of such steel and characterized in that the steel structure of the entire cross-section at part or all of that part is substantially a martensite structure with an effective crystal grain size of 15 μm or less.

    摘要翻译： 本发明提供热锻造用非热处理钢，其中通过热锻造成型后的受控冷却用于制造钢马氏体的主要结构，即使不进行后续的再加热和淬火回火的热处理，从而使钢部分具有 高强度，高韧性，优异的加工性以及由该钢制成的热锻非热处理钢部件，特别是提供一种马氏体型热锻用非热处理钢，其特征在于以质量％计含有C：0.10〜0.20 ％，Si：0.10〜0.50％，Mn：1.0〜3.0％，P：0.001〜0.1％，S：0.005〜0.8％，Cr：0.10〜1.50％，Al：0.1〜0.20％，N：0.0020〜 0.0080％，余量基本上为Fe和不可避免的杂质，以及由这种钢制成的热锻非热处理钢部件，其特征在于，该部分或全部的整个截面的钢结构基本上是马氏体 结构有效结晶 粒径为15μm以下。

    Hot forging use non-heat-treated steel and hot forged non-heat-treated steel part
    2.
    发明授权
    Hot forging use non-heat-treated steel and hot forged non-heat-treated steel part 有权
    热锻造使用非热处理钢和热锻非热处理钢部件

    公开(公告)号：US09376738B2

    公开(公告)日：2016-06-28

    申请号：US12311821

    申请日：2008-10-27

    申请人： Shinya Teramoto ,  Kei Miyanishi ,  Masayuki Hashimura

    发明人： Shinya Teramoto ,  Kei Miyanishi ,  Masayuki Hashimura

    IPC分类号： C22C38/60 ,  C22C38/18 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D1/25 ,  C21D7/13 ,  C22C38/38 ,  C21D8/06

    CPC分类号： C22C38/38 ,  C21D1/25 ,  C21D7/13 ,  C21D8/06 ,  C21D2211/004 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32

    摘要： The present invention provides hot forging use non heat-treated steel where controlled cooling after shaping by hot forging is used to make the main structure of the steel martensite even without subsequent reheating and heat treatment by quenching and tempering and thereby give a steel part with a high strength and high toughness and superior machineability and a hot forged non heat-treated steel part made of that steel, in particular provides a martensite type hot forging use non heat-treated steel characterized by containing, by mass %, C: 0.10 to 0.20%, Si: 0.10 to 0.50%, Mn: 1.0 to 3.0%, P: 0.001 to 0.1%, S: 0.005 to 0.8%, Cr: 0.10 to 1.50%, Al: over 0.1 to 0.20%, and N: 0.0020 to 0.0080% and having a balance of substantially Fe and unavoidable impurities and a hot forged non heat-treated steel part made of such steel and characterized in that the steel structure of the entire cross-section at part or all of that part is substantially a martensite structure with an effective crystal grain size of 15 μm or less.

    摘要翻译： 本发明提供热锻造用非热处理钢，其中通过热锻成形后的受控冷却用于制造马氏体钢的主要结构，即使不进行后续的再加热和淬火回火的热处理，从而使钢部分具有 高强度，高韧性，优异的加工性以及由该钢制成的热锻非热处理钢部件，特别是提供一种马氏体型热锻用非热处理钢，其特征在于以质量％计含有C：0.10〜0.20 ％，Si：0.10〜0.50％，Mn：1.0〜3.0％，P：0.001〜0.1％，S：0.005〜0.8％，Cr：0.10〜1.50％，Al：0.1〜0.20％，N：0.0020〜 0.0080％，余量基本上为Fe和不可避免的杂质，以及由这种钢制成的热锻非热处理钢部件，其特征在于，该部分或全部的整个截面的钢结构基本上是马氏体 结构有效结晶 粒径为15μm以下。

    Steel part for machine structural use and manufacturing method thereof
    4.
    发明授权
    Steel part for machine structural use and manufacturing method thereof 有权
    钢结构部件及其制造方法

    公开(公告)号：US08926767B2

    公开(公告)日：2015-01-06

    申请号：US13823655

    申请日：2012-05-25

    申请人： Shinya Teramoto ,  Hiromasa Takada ,  Manabu Kubota

    发明人： Shinya Teramoto ,  Hiromasa Takada ,  Manabu Kubota

    IPC分类号： C21D8/00 ,  C22C38/00 ,  B21J1/00 ,  C21D1/20

    CPC分类号： C21D8/005 ,  B21J1/003 ,  C21D1/20 ,  C21D2211/002 ,  C21D2211/004

    摘要： The present invention provides a steel part for machine structural use whose fatigue strength and toughness are improved and a manufacturing method thereof. A steel part made of a steel containing, in mass %, C: 0.05 to 0.20%, Si: 0.10 to 1.00%, Mn: 0.75 to 3.00%, P: 0.001 to 0.050%, S: 0.001 to 0.200%, V: exceeding 0.25 to 0.50%, Cr: 0.01 to 1.00%, Al: 0.001 to 0.500%, and N: 0.0080 to 0.0200%, and a balance being composed of Fe and inevitable impurities, in which a steel structure contains a bainite structure having an area ratio of 95% or more, a bainite lath width is 5 μm or less, V carbide having an average grain diameter of not less than 4 nm nor more than 7 nm dispersedly exists in the bainite structure, and an area ratio of V carbide in the bainite structure is 0.18% or more.

    摘要翻译： 本发明提供了一种改善疲劳强度和韧性的机械结构用钢部件及其制造方法。 钢的钢部件以质量％计含有C：0.05〜0.20％，Si：0.10〜1.00％，Mn：0.75〜3.00％，P：0.001〜0.050％，S：0.001〜0.200％，V： 超过0.25〜0.50％，Cr：0.01〜1.00％，Al：0.001〜0.500％，N：0.0080〜0.0200％，余量由Fe和不可避免的杂质构成，其中钢结构体含有贝氏体组织 贝氏体板条宽度为5μm以下，平均粒径为4nm以上且7nm以下的V碳化物分散存在于贝氏体组织中，V碳化物的面积比为95％ 在贝氏体结构中为0.18％以上。

    SPRING STEEL AND SPRING
    5.
    发明申请
    SPRING STEEL AND SPRING 有权
    弹簧钢和弹簧

    公开(公告)号：US20140193288A1

    公开(公告)日：2014-07-10

    申请号：US14237949

    申请日：2012-08-15

    申请人： Shinya Teramoto ,  Manabu Kubota

    发明人： Shinya Teramoto ,  Manabu Kubota

    IPC分类号： F16F1/02 ,  C22C38/34 ,  C22C38/26 ,  C22C38/00 ,  C22C38/22 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/38 ,  C22C38/24

    CPC分类号： F16F1/02 ,  C21D1/06 ,  C21D6/008 ,  C21D8/065 ,  C21D9/02 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/34 ,  C22C38/38

    摘要： The present invention provides a spring steel, which is finally formed into a spring, by making use of, at a maximum, the temper softening resistance effect due to alloying elements while suppressing the formation of hard inclusions of SiO2 and the generation of decarburization, which may cause deterioration of fatigue characteristics of the spring. The spring steel is characterized by comprising, in % by mass, C: 0.50 to 0.70%, Si: 1.00 to 5.00%, Mn: 0.30 to 2.00%, P: 0.0002 to 0.0500%, S: 0.0002 to 0.0500%, Cr: 0.10 to 3.50%, Al: 0.0005 to 0.0500%, and N: 0.0020 to 0.0100%, with the balance being Fe and inevitable impurities, wherein the H-value defined by the following equation (a) is 160 or more, and the C-value defined by the following equation (b) is 3.25 or less: H=33.6[C]+10.0[Si]+5.95[Mn]+11.1[Cr]+90.0  (a), and C=[Si]/[Mn]  (b).

    摘要翻译： 本发明提供一种弹簧钢，其最终通过最大程度地利用由于合金元素而产生的回火软化阻力效应，同时抑制SiO 2的硬夹杂物的形成和脱碳的产生而最终形成为弹簧，其中 可能导致弹簧的疲劳特性恶化。 弹簧钢的特征在于，以质量％计含有C：0.50〜0.70％，Si：1.00〜5.00％，Mn：0.30〜2.00％，P：0.0002〜0.0500％，S：0.0002〜0.0500％，Cr： 0.10〜3.50％，Al：0.0005〜0.0500％，N：0.0020〜0.0100％，余量为Fe和不可避免的杂质，其中由下式（a）定义的H值为160以上，C 由下式（b）定义的值为3.25以下：H = 33.6 [℃] +10.0 [Si] +5.95 [Mn] +11.1 [Cr] +90.0（a），C = [Si] / [ Mn]（b）。

    Fine grain surface layer steel part and method of production of same
    8.
    发明授权
    Fine grain surface layer steel part and method of production of same 有权
    细颗粒表层钢部件及其生产方法相同

    公开(公告)号：US07824508B2

    公开(公告)日：2010-11-02

    申请号：US11990793

    申请日：2007-07-27

    申请人： Shinya Teramoto ,  Hiromasa Takada

    发明人： Shinya Teramoto ,  Hiromasa Takada

    IPC分类号： C22C38/12 ,  C22C38/02 ,  C22C38/04

    CPC分类号： B21J5/00 ,  C21D7/13 ,  C21D8/0205 ,  C21D8/0231 ,  C21D8/0278 ,  C21D2201/03 ,  C21D2201/05 ,  C21D2211/003 ,  C21D2211/005 ,  C21D2211/009 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/60 ,  Y10S148/902

    摘要： The present invention provides a fine grain surface layer steel part having a high proof strength ratio equal to or higher than that of conventional quenched and tempered materials, that is, a fine grain surface layer steel part containing, by mass %, C: 0.45% to 0.70%, Nb: 0.01% to 0.60%, Si: 0.10% to 1.50%, Mn: 0.40% to 2.0%, P: 0.10% or less, S: 0.001% to 0.15%, and N: 0.003% to 0.025% and having a balance of Fe and unavoidable impurities, where the surface layer and inside at all or part of the part have structures of different average particle sizes of ferrite crystal grains surrounded by high angle grain boundaries of a misorientation angle of 15 degrees or more and a method of production of that part comprising warm forging locations where strength is required to a predetermined shape at 1000° C. to 800° C. during which working so as to give an equivalent strain of 1.5 or more.

    摘要翻译： 本发明提供一种具有等于或高于常规淬火回火材料的高强度比的细晶粒表层钢部分，即以质量％计含有C：0.45％的细晶粒表层钢部分， 至0.70％，Nb：0.01％〜0.60％，Si：0.10％〜1.50％，Mn：0.40％〜2.0％，P：0.10％以下，S：0.001〜0.15％，N：0.003％〜0.025 ％，并且具有余量的Fe和不可避免的杂质，其中表面层和内部全部或部分具有由15度或更大的取向角度的高角度晶界包围的铁素体晶粒的平均粒径不同的结构 以及该工件的制造方法，其包括在1000℃至800℃下需要强度至预定形状的热锻造位置，在该温度下工作以产生1.5或更大的等效应变。

    STEEL PART FOR MACHINE STRUCTURAL USE AND MANUFACTURING METHOD THEREOF
    10.
    发明申请
    STEEL PART FOR MACHINE STRUCTURAL USE AND MANUFACTURING METHOD THEREOF 有权
    机械结构用钢及其制造方法

    公开(公告)号：US20130186528A1

    公开(公告)日：2013-07-25

    申请号：US13823461

    申请日：2012-05-25

    申请人： Shinya Teramoto ,  Hiromasa Takada ,  Manabu Kubota

    发明人： Shinya Teramoto ,  Hiromasa Takada ,  Manabu Kubota

    IPC分类号： C21D8/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/04 ,  C22C38/24 ,  C22C38/38

    CPC分类号： C21D8/005 ,  B21J1/003 ,  C21D1/20 ,  C21D6/00 ,  C21D2211/002 ,  C21D2211/004 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/38 ,  C22C38/60

    摘要： The present invention provides a steel part for machine structural use whose fatigue strength and toughness are improved and a manufacturing method thereof. A steel part made of a steel containing, in mass %, C: 0.05 to 0.20%, Si: 0.10 to 1.00%, Mn: 0.75 to 3.00%, P: 0.001 to 0.050%, S: 0.001 to 0.200%, V: 0.05 to 0.20%, Cr: 0.01 to 1.00%, Al: 0.001 to 0.500%, and N: 0.0080 to 0.0200%, and a balance being composed of Fe and inevitable impurities, in which a steel structure contains a bainite structure having an area ratio of 95% or more, a bainite lath width is 5 μm or less, V carbide having an average grain diameter of not less than 4 nm nor more than 7 nm dispersedly exists in the bainite structure, and an area ratio of V carbide in the bainite structure is 0.18% or more.

    摘要翻译： 本发明提供了一种改善疲劳强度和韧性的机械结构用钢部件及其制造方法。 钢的钢部件以质量％计含有C：0.05〜0.20％，Si：0.10〜1.00％，Mn：0.75〜3.00％，P：0.001〜0.050％，S：0.001〜0.200％，V： 0.05〜0.20％，Cr：0.01〜1.00％，Al：0.001〜0.500％，N：0.0080〜0.0200％，余量由Fe和不可避免的杂质构成，其中钢结构体含有具有面积 比例为95％以上，贝氏体板条宽度为5μm以下，平均粒径为4nm以上且7nm以下的V碳化物分散存在于贝氏体组织中，V碳化物的面积比 贝氏体组织为0.18％以上。