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    • 61. 发明申请
    • Rolling element and method of producing the same
    • 滚动元件及其制造方法
    • US20050051240A1
    • 2005-03-10
    • US10790959
    • 2004-03-01
    • Takemori Takayama
    • Takemori Takayama
    • F16H55/06C21D9/32C22C38/00C22C38/14C22C38/54C23C8/22C23C8/26C23C8/80
    • C23C8/26C23C8/22C23C8/80Y10S148/906Y10S384/912
    • Various inexpensive rolling elements for use under high interface pressure such as induction hardened gears are provided, which have improved seizure resistance at tooth flanks and a temper hardness of HRC 50 or more at 300 ° C. To this end, a rolling element is made from a steel material which contains at least 0.5 to 1.5 wt % carbon and 0.2 to 2.0 wt % one or more alloy elements selected from V, Ti, Zr, Nb, Ta and Hf; and in which 0.4 to 4.0% by volume one or more compounds selected from the carbides, nitrides and carbonitrides of the above alloy elements and having an average particle diameter of 0.2 to 5 μm are dispersed. In such a rolling element, the soluble carbon concentration of a martensite parent phase of a rolling contact surface layer is adjusted to 0.3 to 0.8 wt %, the martensite parent phase having been subjected to induction hardening and low temperature tempering, and one or more of the above carbides, nitrides and carbonitrides are dispersed in an amount of 0.4 to 4.0% by volume within the martensite parent phase.
    • 提供了在高界面压力下使用的各种廉价的滚动元件,例如感应淬火齿轮,其在齿面处具有改善的抗咬合性,并且在300℃下具有HRC 50以上的回火硬度。为此,滚动元件由 含有0.5〜1.5重量%碳和0.2〜2.0重量%的选自V,Ti,Zr,Nb,Ta和Hf的一种或多种合金元素的钢材; 并且其中分散了0.4至4.0体积%的一种或多种选自上述合金元素的碳化物,氮化物和碳氮化合物并且平均粒径为0.2至5μm的化合物。 在这样的滚动元件中,将滚动面层的马氏体母相的可溶性碳浓度调整为0.3〜0.8重量%,将马氏体母相进行感应淬火和低温回火, 在马氏体母相中,上述碳化物,氮化物和碳氮化物的分散量为0.4〜4.0体积%。
    • 66. 发明授权
    • Rolling element and method of producing the same
    • 滚动元件及其制造方法
    • US07691212B2
    • 2010-04-06
    • US10790959
    • 2004-03-01
    • Takemori Takayama
    • Takemori Takayama
    • C22C38/24C22C38/26C22C38/28C21D9/40C21D9/36C21D9/32
    • C23C8/26C23C8/22C23C8/80Y10S148/906Y10S384/912
    • Various inexpensive rolling elements for use under high interface pressure such as induction hardened gears are provided, which have improved seizure resistance at tooth flanks and a temper hardness of HRC 50 or more at 300 ° C. To this end, a rolling element is made from a steel material which contains at least 0.5 to 1.5 wt % carbon and 0.2 to 2.0 wt % one or more alloy elements selected from V, Ti, Zr, Nb, Ta and Hf; and in which 0.4 to 4.0% by volume one or more compounds selected from the carbides, nitrides and carbonitrides of the above alloy elements and having an average particle diameter of 0.2 to 5 μm are dispersed. In such a rolling element, the soluble carbon concentration of a martensite parent phase of a rolling contact surface layer is adjusted to 0.3 to 0.8 wt %, the martensite parent phase having been subjected to induction hardening and low temperature tempering, and one or more of the above carbides, nitrides and carbonitrides are dispersed in an amount of 0.4 to 4.0% by volume within the martensite parent phase.
    • 提供了在高界面压力下使用的各种廉价的滚动元件,例如感应淬火齿轮,其在齿面处具有改善的抗咬合性,并且在300℃下具有HRC 50以上的回火硬度。为此,滚动元件由 含有0.5〜1.5重量%碳和0.2〜2.0重量%的选自V,Ti,Zr,Nb,Ta和Hf的一种或多种合金元素的钢材; 并且其中分散有上述合金元素的碳化物,氮化物和碳氮化物中的一种或多种化合物,其平均粒径为0.2〜5μm的0.4〜4.0体积%。 在这样的滚动元件中,将滚动面层的马氏体母相的可溶性碳浓度调整为0.3〜0.8重量%,将马氏体母相进行感应淬火和低温回火, 在马氏体母相中,上述碳化物,氮化物和碳氮化物的分散量为0.4〜4.0体积%。
    • 68. 发明授权
    • Rolling element
    • 滚动元素
    • US07544255B2
    • 2009-06-09
    • US11234959
    • 2005-09-26
    • Takemori Takayama
    • Takemori Takayama
    • C22C38/24C22C38/26C22C38/28
    • C23C8/26C23C8/22C23C8/80Y10S148/906Y10S384/912
    • Various inexpensive rolling elements for use under high interface pressure such as induction hardened gears are provided, which have improved seizure resistance at tooth flanks and a temper hardness of HRC 50 or more at 300° C. To this end, a rolling element is made from a steel material which contains at least 0.5 to 1.5 wt % carbon and 0.2 to 2.0 wt % one or more alloy elements selected from V, Ti, Zr, Nb, Ta and Hf; and in which 0.4 to 4.0% by volume one or more compounds selected from the carbides, nitrides and carbonitrides of the above alloy elements and having an average particle diameter of 0.2 to 5 μm are dispersed. In such a rolling element, the soluble carbon concentration of a martensite parent phase of a rolling contact surface layer is adjusted to 0.3 to 0.8 wt %, the martensite parent phase having been subjected to induction hardening and low temperature tempering, and one or more of the above carbides, nitrides and carbonitrides are dispersed in an amount of 0.4 to 4.0% by volume within the martensite parent phase.
    • 提供了在高界面压力下使用的各种廉价的滚动元件,例如感应淬火齿轮,其在齿面处具有改善的抗咬合性,并且在300℃下具有HRC 50以上的回火硬度。为此,滚动元件由 含有0.5〜1.5重量%碳和0.2〜2.0重量%的选自V,Ti,Zr,Nb,Ta和Hf的一种或多种合金元素的钢材; 并且其中分散了0.4至4.0体积%的一种或多种选自上述合金元素的碳化物,氮化物和碳氮化合物并且平均粒径为0.2至5μm的化合物。 在这样的滚动元件中,将滚动面层的马氏体母相的可溶性碳浓度调整为0.3〜0.8重量%,将马氏体母相进行感应淬火和低温回火, 在马氏体母相中,上述碳化物,氮化物和碳氮化物的分散量为0.4〜4.0体积%。