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公开(公告)号：EP3176278B1
公开(公告)日：2019-03-20
申请号：EP15827899.4
申请日：2015-07-29
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公开(公告)号：EP3176276A1
公开(公告)日：2017-06-07
申请号：EP15826735.1
申请日：2015-07-29
发明人： NEISHI, Yutaka , SUZUKI, Takahisa , KOYAMA, Tatsuya , YAMASAKI, Shingo , KANETANI, Kohei , SADA, Takashi
摘要： Provided is a steel for carbonitrided bearing which excels in hardenability and also excels in toughness, wear resistance, and surface-originated flaking life after quenching and tempering. A steel for carbonitrided bearing of the present embodiment has a chemical composition containing, in mass%, C: 0.22 to 0.45%, Si: not more than 0.50%, Mn: 0.40 to 1.50%, P: not more than 0.015%, S: not more than 0.005%, Cr: 0.30 to 2.0%, Mo: 0.10 to 0.35%, V: 0.20 to 0.40%, Al: 0.005 to 0.10%, N: not more than 0.030%, and O: not more than 0.0015%, with the balance being Fe and impurities, and satisfying Formulae (1) and (2). 1.20 0.4 Cr + 0.4 Mo + 4.5 V 2.60 2.7 C + 0.4 Si + Mn + 0.8 Cr + Mo + V > 2.20
摘要翻译： 本发明提供一种淬透性优异，并且淬火回火后的韧性，耐磨损性，表面起源剥落寿命优异的碳氮共渗轴承用钢。 本实施方式的碳氮共渗轴承用钢的成分组成以质量％计含有C：0.22〜0.45％，Si：0.50％以下，Mn：0.40〜1.50％，P：0.015％以下，S ：不大于0.005％，Cr：0.30〜2.0％，Mo：0.10〜0.35％，V：0.20〜0.40％，Al：0.005〜0.10％，N：0.030％以下，O：0.0015 ％，余量为Fe和杂质，满足式（1）和（2）。 1.20 <0.4Cr + 0.4Mo + 4.5V <2.60 2.7C + 0.4Si + Mn + 0.8Cr + Mo + V> 2.20
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公开(公告)号：EP3176278A1
公开(公告)日：2017-06-07
申请号：EP15827899.4
申请日：2015-07-29
发明人： NEISHI, Yutaka , SUZUKI, Takahisa , KOYAMA, Tatsuya , YAMASAKI, Shingo , KANETANI, Kohei , SADA, Takashi
CPC分类号： C22C38/32 , C21D1/06 , C21D6/002 , C21D6/008 , C21D9/40 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C23C8/32 , C23C8/80 , F16C33/62 , F16C2204/66 , F16C2204/70 , F16C2223/16 , F16C2240/90
摘要： Provided is a carbonitrided bearing part which has high hardenability and toughness, and is excellent in wear resistance and surface-originated flaking life. A carbonitrided bearing part of the present embodiment has a chemical composition containing, in mass%, C: 0.15 to 0.45%, Si: not more than 0.50%, Mn: 0.40 to 1.50%, P: not more than 0.015%, S: not more than 0.005%, Cr: 0.30 to 2.0%, Mo: 0.10 to 0.35%, V: 0.20 to 0.40%, Al: 0.005 to 0.10%, N: not more than 0.030%, and O: not more than 0.0015%, with the balance being Fe and impurities, and satisfying Formulae (1) and (2). At surface, C concentration is 0.7 to 1.2%, N concentration is 0.15 to 0.6%, and Rockwell hardness HRC is 58 to 65. 1.20 0.4 Cr + 0.4 Mo + 4.5 V 2.60 2.7 C + 0.4 Si + Mn + 0.8 Cr + Mo + V > 2.20
摘要翻译： 本发明提供淬透性和韧性高，耐磨损性和表面起皮剥离寿命优异的碳氮共渗轴承部。 本实施方式的碳氮共渗轴承部的化学组成以质量％计含有C：0.15〜0.45％，Si：0.50％以下，Mn：0.40〜1.50％，P：0.015％以下，S： ，Cr：0.30〜2.0％，Mo：0.10〜0.35％，V：0.20〜0.40％，Al：0.005〜0.10％，N：0.030％以下，O：0.0015％ 余量为Fe和杂质，满足式（1）和（2）。 在表面，C浓度为0.7-1.2％，N浓度为0.15-0.6％，洛氏硬度HRC为58-65。1.20 <0.4Cr + 0.4Mo + 4.5V <2.60 2.7C + 0.4Si + Mn + 0.8Cr +沫+ V> 2.20
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公开(公告)号：EP3176276B1
公开(公告)日：2019-12-18
申请号：EP15826735.1
申请日：2015-07-29
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公开(公告)号：EP3677699A1
公开(公告)日：2020-07-08
申请号：EP18849045.2
申请日：2018-08-24
发明人： YAMASHITA, Tomohiro , SUZUKI, Takahisa , NEISHI, Yutaka , HIRAKAMI, Daisuke , KANETANI, Kohei , SADA, Takashi
摘要： A steel material for a carburized bearing part is provided that is excellent in toughness, surface initiated spalling life and wear resistance. The steel material for a carburized bearing part according to the present invention contains, by mass%, C: 0.25 to 0.45%, Si: 0.15 to 0.45%, Mn: 0.40 to 1.50%, P: 0.015% or less, S: 0.005% or less, Cr: 0.60 to 2.00%, Mo: 0.10 to 0.35%, V: 0.20 to 0.40%, Al: 0.005 to 0.100%, Ca: 0.0002 to 0.0010%, N: 0.0300% or less and O: 0.0015% or less, with the balance being Fe and impurities, and satisfies Formulae (1) to (3). 1.20 0.4 Cr + 0.4 Mo + 4.5 V 2.75 A 1 / A 2 > 0.50 2.7 C + 0.4 Si + Mn + 0.45 Ni + 0.8 Cr + Mo + V > 2.55 Formula (2) shows an area fraction of sulfides containing Ca in an amount of 1 mol% or more among sulfides having an equivalent circular diameter of 1 µm or more.
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