公开(公告)号：US20120014635A1

公开(公告)日：2012-01-19

申请号：US13238889

申请日：2011-09-21

申请人： Chikara OHKI ,  Kazuhiro YAGITA ,  Takashi ITO ,  Hiroshi MORISHITA

发明人： Chikara OHKI ,  Kazuhiro YAGITA ,  Takashi ITO ,  Hiroshi MORISHITA

IPC分类号： F16C33/62 ,  C22C38/02 ,  F16C33/32

CPC分类号： F16C33/32 ,  C21D1/06 ,  C21D1/09 ,  C21D1/78 ,  C21D6/04 ,  C21D9/36 ,  C21D9/40 ,  C21D2211/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C22C38/46 ,  C23C8/26 ,  C23C8/38 ,  F16C33/34 ,  F16C33/62 ,  F16C2204/64 ,  F16D3/224 ,  F16D2250/00 ,  F16D2300/10 ,  Y02T50/67 ,  Y10T74/1836

摘要： An outer ring, an inner ring and a ball serving as mechanical components configuring a deep groove ball bearing are formed of steel containing at least 0.77 mass % and not more than 0.85 mass % of carbon, at least 0.01 mass % and not more than 0.25 mass % of silicon, at least 0.01 mass % and not more than 0.35 mass % of manganese, at least 0.01 mass % and not more than 0.15 mass % of nickel, at least 3.75 mass % and not more than 4.25 mass % of chromium, at least 4 mass % and not more than 4.5 mass % of molybdenum and at least 0.9 mass % and not more than 1.1 mass % of vanadium with a remainder consisting of iron and impurity, and have raceway/rolling contact surfaces, the surface being included in a region having a nitrogen enriched layer having a nitrogen concentration of at least 0.05 mass %, the nitrogen enriched layer having a carbon concentration and the nitrogen concentration, in total, of at least 0.82 mass % and not more than 1.9 mass %.

摘要翻译： 构成深沟球轴承的作为机械部件的外圈，内圈和球由含有至少0.77质量％且不大于0.85质量％的碳，至少0.01质量％且不大于0.25的钢形成 至少0.01质量％且不超过0.35质量％的锰，镍的至少0.01质量％且不大于0.15质量％，铬的至少3.75质量％且不大于4.25质量％ 至少4质量％且不超过4.5质量％的钼和至少0.9质量％且不超过1.1质量％的余量由铁和杂质构成的钒，并且具有轨道/滚动接触表面，该表面包括 在具有至少0.05质量％的氮浓度的氮富集层的区域中，具有碳浓度和氮浓度的富氮层总计为至少0.82质量％且不大于1.9质量％。

公开(公告)号：US20090245706A1

公开(公告)日：2009-10-01

申请号：US12410821

申请日：2009-03-25

申请人： Hiroshi MORISHITA ,  Takashi ITO ,  Chikage AKAI ,  Chikara OHKI ,  Kazuhiro YAGITA

发明人： Hiroshi MORISHITA ,  Takashi ITO ,  Chikage AKAI ,  Chikara OHKI ,  Kazuhiro YAGITA

IPC分类号： F16C33/62

CPC分类号： F16C33/64 ,  F16C19/06 ,  F16C19/26 ,  F16C33/3806 ,  F16C33/583 ,  F16C2360/23

摘要： An outer ring and an inner ring of a rolling bearing are constituted of steel containing 0.77 to 0.85% of carbon, 0.01 to 0.25% of silicon, 0.01 to 0.35% of manganese, 0.01 to 0.15% of nickel, 3.75 to 4.25% of chromium, 4 to 4.5% of molybdenum and 0.9 to 1.1% of vanadium with the rest consisting of iron and impurities, a nitrogen-enriched layer having a nitrogen concentration of at least 0.05 mass % is formed on a region including a rolling surface, and the total of a carbon concentration and the nitrogen concentration in the nitrogen-enriched layer is at least 0.82 mass % and not more than 1.9 mass %. A DLC coating layer is arranged on a region including an outer ring contact surface.

摘要翻译： 滚动轴承的外圈和内圈由含有0.77〜0.85％的碳，0.01〜0.25％的硅，0.01〜0.35％的锰，0.01〜0.15％的镍，3.75〜4.25％的铬， ，4〜4.5％的钼和0.9〜1.1％的钒，其余由铁和杂质构成，氮含量为0.05质量％以上的富氮层形成在包括滚动面的区域上， 氮富集层中的碳浓度和氮浓度的合计为至少0.82质量％且不大于1.9质量％。 DLC涂层布置在包括外环接触表面的区域上。