公开(公告)号：EP4063679B1

公开(公告)日：2024-10-02

申请号：EP21164089.1

申请日：2021-03-22

IPC分类号： F16C33/34 ,  F16C33/58 ,  F16C33/62 ,  F16C33/64 ,  F16C33/30 ,  F16C19/26 ,  F16C19/36

CPC分类号： F16C19/26 ,  F16C19/364 ,  F16C33/34 ,  F16C33/585 ,  F16C33/62 ,  F16C33/64 ,  F16C2300/1220130101 ,  F16C33/306

公开(公告)号：EP4428261A1

公开(公告)日：2024-09-11

申请号：EP22901195.2

申请日：2022-11-25

申请人： NTN Corporation

发明人： YAMADA, Masahiro ,  SATO, Miyu ,  OHKI, Chikara

IPC分类号： C22C38/00 ,  C22C38/18 ,  C22C38/24 ,  F16C19/06 ,  F16C33/32 ,  F16C33/62 ,  C21D9/40

CPC分类号： F16C19/06 ,  F16C33/32 ,  F16C33/62 ,  C21D9/40 ,  C22C38/00 ,  C22C38/18 ,  C22C38/24

摘要： A rolling component (10) has a surface (10a, 10b, 10c, 10d) and is made of steel. The rolling component comprises a surface layer portion (50) that is a region up to 20 µm in depth from the surface. The rolling component is intended for use with hydrogen-utilizing equipment. The steel contains 0.70 mass percent or more and 1.10 mass percent or less of carbon, 0.15 mass percent or more and 0.35 mass percent or less of silicon, 0.30 mass percent or more and 0.60 mass percent or less of manganese, 1.30 mass percent or more and 1.60 mass percent or less of chromium, 0.01 mass percent or more and 0.50 mass percent or less of molybdenum, and 0.01 mass percent or more and 0.50 mass percent or less of vanadium, with a balance consisting of iron and unavoidable impurities. In the surface layer portion, the steel has a nitrogen concentration of 0.2 mass percent or more.

公开(公告)号：EP4375527A1

公开(公告)日：2024-05-29

申请号：EP21950980.9

申请日：2021-07-21

申请人： Harmonic Drive Systems Inc.

发明人： KIYOSAWA Yoshihide

IPC分类号： F16C33/34 ,  F16C33/62 ,  F16C33/64 ,  F16H1/32

CPC分类号： F16C33/34 ,  F16H1/32 ,  F16C33/64 ,  F16C33/62

摘要： A wave bearing (43) of a space strain wave gearing device (1) comprises an inner ring (45) formed from a bearing steel, an outer ring (44) formed from a martensitic stainless steel, and balls (46) formed from ceramics. On the inner ring (45) formed from a bearing steel, a ceramic coating (48) formed by an AD method is formed as a rust-preventive coating. In the space strain wave gearing device (1) that adopts solid lubrication (powder lubrication), it is possible to reliably prevent rust from developing on the inner ring (45) formed from a bearing steel of the wave bearing (43). In a space environment where the temperature greatly changes, appropriate setting of the linear expansion coefficients of the inner ring (45), the outer ring (44), and the balls (46) enables a change in the radial gap of the wave bearing (43) to be suppressed to a range that does not interfere with practical use.

公开(公告)号：EP3369953A1

公开(公告)日：2018-09-05

申请号：EP16859561.9

申请日：2016-10-12

申请人： NTN Corporation

发明人： HORI, Michio ,  TORISAWA, Hideto ,  YUKI, Hiroshi ,  OHKI, Chikara ,  YAGITA, Kazuhiro

IPC分类号： F16C33/64 ,  C21D1/10 ,  C21D1/28 ,  C21D9/40 ,  C22C38/00 ,  C22C38/22 ,  C22C38/44 ,  F16C19/38 ,  F16C33/62 ,  F16C43/04

CPC分类号： F16C19/385 ,  C21D1/10 ,  C21D1/28 ,  C21D1/42 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D9/40 ,  C21D2221/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/44 ,  F16C19/38 ,  F16C33/62 ,  F16C33/64 ,  F16C43/04 ,  Y02P10/253

摘要： A method for producing a bearing ring of a double row tapered roller bearing for providing a double row tapered roller bearing at a reduced cost includes the steps of: preparing a formed body; forming a heated region; retaining the formed body in a state in which heating is stopped; and cooing. In the step of preparing a formed body, there is prepared a formed body constituted of steel and having an outer circumferential surface having an annular groove (19) having a bottom surface to serve as a raceway surface (11) of the bearing ring. In the step of forming a heated region, the formed body is induction heated to form a heated region including the bottom surface of the groove (19) and heated to a temperature of at least an A 1 point. In the cooling step, the whole of the heated region is simultaneously cooled to a temperature of not more than an M s point. The step of retaining the formed body in a state in which heating is stopped is performed after the step of forming a heated region before the step of cooling. In the step of retaining, dispersion in temperature in the heated region in the circumferential direction is suppressed to not more than 20°C.

公开(公告)号：EP3093363A4

公开(公告)日：2017-11-22

申请号：EP15735602

申请日：2015-01-09

申请人： NIPPON STEEL & SUMITOMO METAL CORP

发明人： SAKAMOTO MASASHI ,  KODAMA JUNICHI ,  NEISHI YUTAKA

IPC分类号： C21D1/32 ,  B22D23/00 ,  C21D8/06 ,  C21D9/36 ,  C21D9/38 ,  C21D9/40 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C22C38/20 ,  C22C38/22 ,  C22C38/32 ,  C22C38/40 ,  C22C38/44 ,  C22C38/54 ,  F16C33/30 ,  F16C33/62 ,  F16C33/64

CPC分类号： C21D9/40 ,  B22D23/00 ,  C21D1/18 ,  C21D1/32 ,  C21D8/065 ,  C21D9/36 ,  C21D9/38 ,  C21D2211/001 ,  C21D2211/003 ,  C21D2211/004 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/18 ,  C22C38/20 ,  C22C38/22 ,  C22C38/32 ,  C22C38/44 ,  C22C38/54 ,  F16C33/30 ,  F16C33/62 ,  F16C33/64 ,  F16C2204/66 ,  F16C2204/70 ,  F16C2204/72 ,  F16C2220/44 ,  F16C2223/02 ,  F16C2223/10

摘要： A bearing part according the present invention includes, as the chemical composition, by mass%, C: 0.95% to 1.10%, Si: 0.10% to 0.70%, Mn: 0.20% to 1.20%, Cr: 0.90% to 1.60%, A1: 0.010% to 0.100%, N: 0.003% to 0.030%, P: 0.025% or less, S: 0.025% or less, O: 0.0010% or less, and optionally Mo: 0.25% or less, B: 0.0050% or less, Cu: 1.0% or less, Ni: 3.0% or less, and Ca: 0.0015% or less, and a remainder including Fe and impurities; metallographic structure includes a retained austenite, a spherical cementite and a martensite; an amount of the retained austenite is 15% to 25%, by volume%; an average grain size of prior-austenite is 8.0 µm or less; and a number density of a void having a circle equivalent diameter of 0.02 µm to 3.0 µm is 2000 mm -2 or less in the metallographic structure.

公开(公告)号：EP3093361A4

公开(公告)日：2017-11-22

申请号：EP15735570

申请日：2015-01-09

申请人： NIPPON STEEL & SUMITOMO METAL CORP

发明人： SAKAMOTO MASASHI ,  KODAMA JUNICHI ,  NEISHI YUTAKA

IPC分类号： C21D1/32 ,  B22D23/00 ,  C21D9/36 ,  C21D9/38 ,  C21D9/40 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C22C38/20 ,  C22C38/22 ,  C22C38/32 ,  C22C38/40 ,  C22C38/44 ,  F16C33/62

CPC分类号： C21D9/40 ,  B22D23/00 ,  C21D1/18 ,  C21D1/32 ,  C21D8/065 ,  C21D9/36 ,  C21D9/38 ,  C21D2211/001 ,  C21D2211/003 ,  C21D2211/004 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/18 ,  C22C38/20 ,  C22C38/22 ,  C22C38/32 ,  C22C38/44 ,  C22C38/54 ,  F16C33/30 ,  F16C33/62 ,  F16C33/64 ,  F16C2204/66 ,  F16C2204/70 ,  F16C2204/72 ,  F16C2220/44 ,  F16C2223/02 ,  F16C2223/10

摘要： A bearing part according the present invention includes, as the chemical composition, by mass%, C: 0.95% to 1.10%, Si: 0.10% to 0.70%, Mn: 0.20% to 1.20%, Cr: 0.90% to 1.60%, A1: 0.010% to 0.100%, N: 0.003% to 0.030%, P: 0.025% or less, S: 0.025% or less, O: 0.0010% or less, and optionally Mo: 0.25% or less, B: 0.0050% or less, Cu: 1.0% or less, Ni: 3.0% or less, and Ca: 0.0015% or less, and a remainder including Fe and impurities; metallographic structure includes a retained austenite, a spherical cementite and a martensite; an amount of the retained austenite is 15% to 25%, by volume%; an average grain size of prior-austenite is 8.0 µm or less; and a number density of a void having a circle equivalent diameter of 0.02 µm to 3.0 µm is 2000 mm -2 or less in the metallographic structure.

公开(公告)号：EP1826286B1

公开(公告)日：2017-11-15

申请号：EP07003053.1

申请日：2007-02-13

申请人： JFE Steel Corporation ,  JTEKT Corporation

发明人： Iwamoto, Takashi ,  Tomita, Kunikazu ,  Kimura, Hideto ,  Toyooka, Takaaki ,  Nishisaka, Hisato ,  Goto, Masao ,  Harada, Hisashi

IPC分类号： C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/34 ,  C22C38/60 ,  C21D1/32 ,  C21D6/00 ,  F16C33/62 ,  C21D1/26 ,  C21D1/28 ,  F16C33/32 ,  F16C33/34 ,  F16C33/30 ,  F16H55/32

CPC分类号： C22C38/60 ,  C21D1/26 ,  C21D1/28 ,  C21D1/32 ,  C21D6/002 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/34 ,  F16C33/30 ,  F16C33/32 ,  F16C33/34 ,  F16C33/62 ,  F16H55/32 ,  Y10S148/906

公开(公告)号：EP2620661A3

公开(公告)日：2017-10-25

申请号：EP13151242.8

申请日：2013-01-15

申请人： Rolls-Royce plc

发明人： Gibbons, John

IPC分类号： F16C25/08 ,  F16C27/04 ,  F16C33/30 ,  F16C33/58 ,  F01D25/16 ,  F16C35/063 ,  F16C19/52 ,  F16C33/60 ,  F16C33/62

CPC分类号： F02C7/06 ,  F01D25/16 ,  F05D2240/60 ,  F16C19/52 ,  F16C25/06 ,  F16C25/08 ,  F16C27/04 ,  F16C33/303 ,  F16C33/58 ,  F16C33/60 ,  F16C33/62 ,  F16C35/063 ,  F16C2229/00 ,  F16C2240/46 ,  F16C2240/60 ,  F16C2240/70 ,  F16C2360/23

摘要： A bearing assembly that comprises a substantially circular bearing race with a raceway on one of its radially inner or outer surfaces and a plurality of spherical bearing elements disposed around the raceway, and wherein the bearing race is configured to, in use, bias the bearing elements towards a bearing region of a shaft.

摘要翻译： 一种轴承组件，其包括在其径向内或外表面之一上具有滚道的基本上为圆形的轴承座圈以及围绕滚道设置的多个球形轴承元件，并且其中轴承座圈构造成在使用时偏置轴承元件 朝向轴的轴承区域。

公开(公告)号：EP3067433A4

公开(公告)日：2017-08-09

申请号：EP14860823

申请日：2014-10-27

申请人： NIPPON STEEL & SUMITOMO METAL CORP

发明人： YANO TAKEFUMI ,  KASHIWAGI SHINICHIROU ,  UEKITA HIROKI ,  SAITOU TOSHIKAZU ,  HIRANO TETSUROU ,  NEISHI YUTAKA

IPC分类号： C21D8/00 ,  B21K1/04 ,  C21D1/32 ,  C21D7/13 ,  C21D9/40 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C22C38/40 ,  F16C19/36 ,  F16C33/62 ,  F16C33/64

CPC分类号： C21D9/40 ,  B21K1/04 ,  C21D1/32 ,  C21D7/13 ,  C21D8/00 ,  C21D2211/003 ,  C22C38/00 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C22C38/40 ,  F16C19/36 ,  F16C19/364 ,  F16C33/62 ,  F16C33/64 ,  F16C2204/66 ,  F16C2204/70

摘要： A roughly shaped material for a rolling bearing of the present invention is produced by forging a steel composed of a high-carbon chrome bearing steel containing 0.7 mass% to 1.2 mass% of a carbon, and 0.8 mass% to 1.8 mass% of a chromium to a predetermined shape while heating the steel to a forging temperature in a range of (Ae 1 point+25°C) to (Ae 1 point+105°C), cooling a forged article to a temperature of Ae 1 point or lower, and performing an annealing in which the forged article that is obtained is heated to a soaking temperature in a range of (Ae 1 point+25°C) to (Ae 1 point+85°C), the forged article is retained for 0.5 hours or longer, and the forged article is cooled down to 700°C or lower at a cooling rate of 0.30 °C/s or slower.

摘要翻译： 本发明的滚动轴承用粗加工材料是通过将含有0.7质量％〜1.2质量％的碳的高碳铬轴承钢和0.8质量％〜1.8质量％的铬 （Ae 1点+ 25℃）〜（Ae 1点+ 105℃）的范围内的温度加热至规定的形状，将锻造物冷却至Ae 1点以下的温度， 进行将所得到的锻造品加热至（Ae 1点+ 25℃）〜（Ae 1点+ 85℃）范围内的均热温度的退火，将锻造品保持0.5小时 或更长，并且锻造制品以0.30℃/ s或更低的冷却速率冷却到700℃或更低。

公开(公告)号：EP2198062A4

公开(公告)日：2017-07-26

申请号：EP08835895

申请日：2008-10-03

申请人： AB SKF

发明人： STRANDELL INGEMAR ,  NEUMAN PETER ,  SUNDQVIST MIKAEL BERNDT ,  LANE STEVEN

IPC分类号： C21D9/36 ,  C21D1/10 ,  C21D1/20 ,  C21D1/22 ,  C21D1/25 ,  C21D1/78 ,  C21D9/40

CPC分类号： C21D9/40 ,  C21D1/10 ,  C21D1/20 ,  C21D1/22 ,  C21D1/25 ,  C21D2211/002 ,  C21D2211/008 ,  F16C33/62 ,  Y02P10/253

摘要： A bearing component formed from a bearing steel, wherein the component has an outer surface and comprises through-hardened bainite and/or martensite and has a substantially homogeneous chemical composition, at least a part of the bearing component having a compressive residual stress profile comprising -25 to -1000 MPa at the near surface, wherein the near surface is defined as a region 500 microns or less below the outer surface.

摘要翻译： 由轴承钢形成的轴承部件，其中所述部件具有外表面并且包括贯穿硬化的贝氏体和/或马氏体并且具有基本均匀的化学组成，所述轴承部件的至少一部分具有压缩残余应力分布， 在近表面处为25至-1000MPa，其中近表面定义为低于外表面500微米或更小的区域。