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1. 发明申请

US20050241734A1 Rolling elements 审中-公开
标题翻译：滚动元素
公开(公告)号：US20050241734A1
公开(公告)日：2005-11-03
申请号：US11154918
申请日：2005-06-16
申请人： Takemori Takayama , Naoji Hamasaka , Noriko Morioka
发明人： Takemori Takayama , Naoji Hamasaka , Noriko Morioka
IPC分类号： C21D6/00 , C21D9/32 , C22C38/00 , C22C38/54 , C22C38/58 , C23C8/22 , C23C8/80 , C22C38/02 , C22C38/06
CPC分类号： C23C8/80 , C23C8/22
摘要： The pitting resistance of a gear is increased by hardening its tooth flanks through application of carburizing/quenching, bright hardening and induction hardening to a steel material capable of providing significantly improved softening resistance in tempering at a low temperature of 300 to 350° C. To this end, the steel material prepared so as to satisfy the relationship described by: 5≦4.3×Si(wt %)+7.3×Al(wt %)+3.1×V(wt %)+1.5×Mo(wt %)+1.2×Cr(wt %)×(0.45÷C(wt %)) is carburized such that the carbon concentration of its carburized surface layer is adjusted to 0.6 to 0.9 wt %; and the steel material is subjected to quenching and tempering at 300° C. or less subsequently to the carburization process, or alternatively the steel material is once cooled after the carburization process and then subjected to treatments of re-heating hardening and tempering at 300° C. or less so that a hardness of HRC 58 or more is ensured by the tempering process at 300° C.
摘要翻译：通过在300〜350℃的低温下能够提供显着提高的回火的耐软化性的钢材，通过对渗碳/淬火，光亮硬化和感应淬火进行渗碳淬火来淬火其齿面来增加齿轮的耐点蚀性。为了满足以下关系而制备的钢材：5 <= 4.3×Si（wt％）+ 7.3×Al（wt％）+ 3.1×V（wt％）+ 1.5×Mo（wt％）+ 1.2×Cr wt％）×（0.45 / C（重量％））渗碳，使其渗碳表面层的碳浓度调整为0.6〜0.9重量％钢材在渗碳处理后在300℃以下进行淬火回火，或者在渗碳处理后钢材一次冷却后，在300℃下进行再加热硬化回火处理 C以下，通过300℃的回火处理确保HRC58以上的硬度。

2. 发明申请

US20060021679A1 Rolling element and method of producing the same 失效
标题翻译：滚动元件及其制造方法
公开(公告)号：US20060021679A1
公开(公告)日：2006-02-02
申请号：US11235425
申请日：2005-09-26
申请人： Takemori Takayama , Masanari Furumoto , Chikara Nakao , Noriko Morioka
发明人： Takemori Takayama , Masanari Furumoto , Chikara Nakao , Noriko Morioka
IPC分类号： C23C8/32 , C23C8/22
CPC分类号： C23C8/22 , C21D1/10 , C21D1/32 , C21D1/78 , C21D7/06 , C21D9/32 , C21D2211/003 , C21D2211/008 , C23C8/32 , C23C8/80 , Y02P10/253 , Y10S148/906 , Y10S384/912
摘要： There is provided an inexpensive rolling element used under high interface pressure such as induction hardened gears, the rolling element being improved in the seizure resistance of its tooth flanks and having a temper hardness of HRC 50 or more at 300° C. To this end, the rolling element is made from a steel material containing at least 0.45 to 1.5 wt % C and one or more alloy elements selected from 0.1 to 0.5 wt % V and 0.3 to 1.5 wt % Cr, and has a rolling contact surface layer having a structure tempered at low temperature in which 2 to 18% by volume cementite disperses in a martensite parent phase formed by induction heating and cooling and containing 0.25 to 0.8 wt % carbon solid-dissolving therein.
摘要翻译：提供了一种在诸如感应淬火齿轮的高界面压力下使用的便宜的滚动元件，该滚动元件在其齿面的抗咬合性方面得到提高，并且在300℃下具有HRC 50以上的回火硬度。为此，滚动元件由含有至少0.45至1.5重量％的C和一种或多种选自0.1至0.5重量％V和0.3至1.5重量％Cr的合金元素的钢材制成，并具有具有结构的滚动接触表面层在低温下回火，其中2〜18体积％的渗碳体分散在通过感应加热和冷却形成的马氏体母相中，并含有固溶于其中的0.25至0.8重量％的碳。

3. 发明申请

US20050247377A1 Rolling elements 审中-公开
标题翻译：滚动元素
公开(公告)号：US20050247377A1
公开(公告)日：2005-11-10
申请号：US11154919
申请日：2005-06-16
申请人： Takemori Takayama , Naoji Hamasaka , Noriko Morioka
发明人： Takemori Takayama , Naoji Hamasaka , Noriko Morioka
IPC分类号： C21D6/00 , C21D9/32 , C22C38/00 , C22C38/54 , C22C38/58 , C23C8/22 , C23C8/80
CPC分类号： C23C8/80 , C23C8/22
摘要： The pitting resistance of a gear is increased by hardening its tooth flanks through application of carburizing/quenching, bright hardening and induction hardening to a steel material capable of providing significantly improved softening resistance in tempering at a low temperature of 300 to 350° C. To this end, the steel material prepared so as to satisfy the relationship described by: 5≦4.3×Si (wt %)+7.3×Al (wt %)+3.1×V (wt %)+1.5×Mo (wt %)+1.2×Cr (wt %)×(0.45÷C (wt %)) is carburized such that the carbon concentration of its carburized surface layer is adjusted to 0.6 to 0.9 wt %; and the steel material is subjected to quenching and tempering at 300° C. or less subsequently to the carburization process, or alternatively the steel material is once cooled after the carburization process and then subjected to treatments of re-heating hardening and tempering at 300° C. or less so that a hardness of HRC 58 or more is ensured by the tempering process at 300° C.
摘要翻译：通过在300〜350℃的低温下能够提供显着提高的回火的耐软化性的钢材，通过对渗碳/淬火，光亮硬化和感应淬火进行渗碳淬火来淬火其齿面来增加齿轮的耐点蚀性。为了满足以下关系而制备的钢材：5 <= 4.3×Si（wt％）+ 7.3×Al（wt％）+ 3.1×V（wt％）+ 1.5×Mo（wt％）+ 1.2×Cr wt％）×（0.45 / C（重量％））渗碳，使其渗碳表面层的碳浓度调整为0.6〜0.9重量％钢材在渗碳处理后在300℃以下进行淬火回火，或者在渗碳处理后钢材一次冷却后，在300℃下进行再加热硬化回火处理 C以下，通过300℃的回火处理确保HRC58以上的硬度。

4. 发明授权

US07691213B2 Case hardened gear and method of producing the same 失效
标题翻译：表壳硬化齿轮及其制造方法
公开(公告)号：US07691213B2
公开(公告)日：2010-04-06
申请号：US10790931
申请日：2004-03-01
申请人： Takemori Takayama , Masanari Furumoto , Chikara Nakao , Noriko Morioka
发明人： Takemori Takayama , Masanari Furumoto , Chikara Nakao , Noriko Morioka
IPC分类号： C22C38/24 , C22C38/18 , C22C38/40 , C22C38/46 , C21D9/32 , C21D1/10
CPC分类号： C23C8/22 , C21D1/10 , C21D1/32 , C21D1/78 , C21D7/06 , C21D9/32 , C21D2211/003 , C21D2211/008 , C23C8/32 , C23C8/80 , Y02P10/253 , Y10S148/906 , Y10S384/912
摘要： There is provided an inexpensive rolling element used under high interface pressure such as induction hardened gears, the rolling element being improved in the seizure resistance of its tooth flanks and having a temper hardness of HRC 50 or more at 300° C. To this end, the rolling element is made from a steel material containing at least 0.45 to 1.5 wt % C and one or more alloy elements selected from 0.1 to 0.5 wt % V and 0.3 to 1.5 wt % Cr, and has a rolling contact surface layer having a structure tempered at low temperature in which 2 to 18% by volume cementite disperses in a martensite parent phase formed by induction heating and cooling and containing 0.25 to 0.8 wt % carbon solid-dissolving therein.
摘要翻译：提供了一种在诸如感应淬火齿轮的高界面压力下使用的便宜的滚动元件，该滚动元件在其齿面的抗咬合性方面得到提高，并且在300℃下具有HRC 50以上的回火硬度。为此，滚动元件由含有至少0.45至1.5重量％的C和一种或多种选自0.1至0.5重量％V和0.3至1.5重量％Cr的合金元素的钢材制成，并具有具有结构的滚动接触表面层在低温下回火，其中2〜18体积％的渗碳体分散在通过感应加热和冷却形成的马氏体母相中，并含有固溶于其中的0.25至0.8重量％的碳。

5. 发明授权

US07422643B2 Rolling element and method of producing the same 失效
标题翻译：滚动元件及其制造方法
公开(公告)号：US07422643B2
公开(公告)日：2008-09-09
申请号：US11235425
申请日：2005-09-26
申请人： Takemori Takayama , Masanari Furumoto , Chikara Nakao , Noriko Morioka
发明人： Takemori Takayama , Masanari Furumoto , Chikara Nakao , Noriko Morioka
IPC分类号： C22C38/18 , C21D9/32 , C21D9/36 , C21D1/10
CPC分类号： C23C8/22 , C21D1/10 , C21D1/32 , C21D1/78 , C21D7/06 , C21D9/32 , C21D2211/003 , C21D2211/008 , C23C8/32 , C23C8/80 , Y02P10/253 , Y10S148/906 , Y10S384/912
摘要： There is provided an inexpensive rolling element used under high interface pressure such as induction hardened gears, the rolling element being improved in the seizure resistance of its tooth flanks and having a temper hardness of HRC 50 or more at 300° C. To this end, the rolling element is made from a steel material containing at least 0.45 to 1.5 wt % C and one or more alloy elements selected from 0.1 to 0.5 wt % V and 0.3 to 1.5 wt % Cr, and has a rolling contact surface layer having a structure tempered at low temperature in which 2 to 18% by volume cementite disperses in a martensite parent phase formed by induction heating and cooling and containing 0.25 to 0.8 wt % carbon solid-dissolving therein.
摘要翻译：提供了一种在诸如感应淬火齿轮的高界面压力下使用的便宜的滚动元件，该滚动元件在其齿面的抗咬合性方面得到提高，并且在300℃下具有HRC 50以上的回火硬度。为此，滚动元件由含有至少0.45至1.5重量％的C和一种或多种选自0.1至0.5重量％V和0.3至1.5重量％Cr的合金元素的钢材制成，并具有具有结构的滚动接触表面层在低温下回火，其中2〜18体积％的渗碳体分散在通过感应加热和冷却形成的马氏体母相中，并含有固溶于其中的0.25至0.8重量％的碳。

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