公开(公告)号：EP3088106A4

公开(公告)日：2017-08-09

申请号：EP14873470

申请日：2014-11-26

申请人： NTN TOYO BEARING CO LTD

发明人： YASHIRO NAOKI ,  KAKO NORITAKA ,  OOHIRA KOUYA

IPC分类号： B22F3/24 ,  B22F5/00

CPC分类号： B22F3/24 ,  B22F1/0062 ,  B22F3/02 ,  B22F2003/023 ,  B22F2201/05

公开(公告)号：EP3104029A4

公开(公告)日：2017-11-22

申请号：EP15746685

申请日：2015-02-06

申请人： NTN TOYO BEARING CO LTD

发明人： YOSHIZUKA NORIYOSHI ,  YASHIRO NAOKI ,  OOHIRA KOUYA ,  ISHII TAKUYA

IPC分类号： F16C33/20 ,  B22F3/24 ,  B22F5/00 ,  F16C33/12 ,  F16C33/14

CPC分类号： F16C33/208 ,  B22F1/0059 ,  B22F3/02 ,  B22F5/106 ,  B22F7/08 ,  B29C45/1459 ,  B29K2023/0683 ,  B29K2027/18 ,  B29K2905/12 ,  B29L2031/04 ,  C22C33/0264 ,  F16C17/02 ,  F16C17/10 ,  F16C33/128 ,  F16C33/201 ,  F16C2208/02 ,  F16C2208/32 ,  F16C2208/78 ,  F16C2220/20

摘要： Provided is a sliding bearing that can keep the price low while maintaining a bearing property over a long period. The sliding bearing is a sliding bearing 1 having a bearing periphery portion 2 formed of a metal base material, and a resin layer 3 formed on a surface to be a sliding surface of the bearing periphery portion, wherein the metal base material is an unsintered green compact formed by compacting a raw material powder containing a metal powder capable of forming an oxide film as a major raw material, and the oxide film has been formed between particles of the metal powder by means of steam treatment or the like, and the unsintered green compact has a radial crushing strength of more than 100 MPa.

公开(公告)号：EP3018228A4

公开(公告)日：2017-03-01

申请号：EP14819452

申请日：2014-06-03

申请人： NTN TOYO BEARING CO LTD

发明人： OKUNO TAKAHIRO ,  YASHIRO NAOKI ,  OOHIRA KOUYA

IPC分类号： C22C38/00 ,  B22F1/00 ,  B22F3/02 ,  B22F5/08 ,  C22C33/02 ,  C22C38/08 ,  C22C38/12 ,  F16H55/06

CPC分类号： F16H55/06 ,  B22F1/007 ,  B22F3/16 ,  B22F5/08 ,  B22F2003/026 ,  B22F2301/35 ,  B22F2302/40 ,  B22F2304/10 ,  B22F2998/10 ,  C22C33/0264 ,  C22C38/00 ,  C22C38/08 ,  C22C38/12 ,  F16H53/025 ,  F16H55/17

摘要： A sintered compact having a density of 7.5 g/cm 3 or more is formed by mixed powder. The mixed powder is obtained by mixing graphite powder having an average particle diameter of 8 µm or less and diffusion alloyed steel powder. The ratio of the graphite powder is from 0.05 wt% to 0.35 wt% with respect to 100 wt% of the diffusion alloyed steel powder. Or, the mixed powder is obtained by mixing the graphite powder and completely alloyed steel powder. The ratio of the graphite powder is from 0.15 wt% to 0.35 wt% with respect to 100 wt% of the completely alloyed steel powder.

公开(公告)号：EP3128193A4

公开(公告)日：2018-01-03

申请号：EP15765601

申请日：2015-03-19

申请人： NTN TOYO BEARING CO LTD

发明人： YASHIRO NAOKI ,  ITOU YUUTA ,  OKUNO TAKAHIRO ,  OOHIRA KOUYA

IPC分类号： F16C33/64 ,  B22F5/10 ,  C21D1/18 ,  C21D8/00 ,  C21D9/40 ,  C22C33/02 ,  C22C38/00 ,  C22C38/08 ,  C22C38/12 ,  F16C19/06 ,  F16C33/62 ,  F16C33/78

CPC分类号： F16C33/64 ,  B22F3/16 ,  B22F3/24 ,  B22F5/106 ,  B22F2003/248 ,  B22F2301/35 ,  B22F2998/10 ,  C21D1/18 ,  C21D8/005 ,  C21D9/40 ,  C22C33/02 ,  C22C38/00 ,  C22C38/08 ,  C22C38/12 ,  F16C19/06 ,  F16C33/62 ,  F16C33/7856 ,  F16C2204/60 ,  F16C2220/20 ,  F16C2220/44 ,  F16C2223/10 ,  B22F3/02 ,  B22F3/10

摘要： Partially diffusion-alloyed steel powder is subjected to compression molding and then sintered to form a sintered metal material (10'), and a raceway surface (2) is formed on the sintered metal material (10') through plastic working, to thereby manufacture a raceway ring (1). With at least a risk volume of the raceway ring (1) being adopted as a prediction volume, a square root ˆšarea max of the maximum pore envelope area estimated to be present at least in the prediction volume is set to be less than 50 µm. With this, there is provided a raceway ring for a rolling bearing that has an increased rolling fatigue life at low cost.

公开(公告)号：EP3097999A4

公开(公告)日：2017-10-18

申请号：EP14880315

申请日：2014-12-22

申请人： NTN TOYO BEARING CO LTD

发明人： OKUNO TAKAHIRO ,  YASHIRO NAOKI ,  OOHIRA KOUYA ,  FUJIKAWA MASAMICHI

IPC分类号： B22F3/02 ,  C22C33/02 ,  C22C38/00 ,  C22C38/08

CPC分类号： F16H55/06 ,  B22F1/0003 ,  B22F3/16 ,  B22F5/08 ,  B22F2003/242 ,  B22F2003/248 ,  B22F2201/02 ,  B22F2201/30 ,  B22F2302/40 ,  B22F2302/45 ,  B22F2998/10 ,  C21D9/32 ,  C22C33/02 ,  C22C38/00 ,  C22C38/08 ,  C22C38/12 ,  C23C8/32 ,  F16H55/17

摘要： A sintered machine part is formed of an iron-based sintered body obtained by molding and sintering raw material powder containing iron-based partially diffusion-alloyed steel powder. The iron-based sintered body has a ratio of carbon of 0.35 wt% or less. The iron-based sintered body has a density of 7.55 g/cm 3 or more. The iron-based sintered body has a square root ˆšarea max of an estimated maximum pore envelope area of 200 µm or less in an estimation target region set in a surface layer from a surface to a predetermined depth.