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公开(公告)号：EP0861907A3
公开(公告)日：1998-10-14
申请号：EP98107168.1
申请日：1992-12-02
申请人： KOYO SEIKO CO., LTD.
发明人： Toda, Kazutoshi
摘要： A process for producing a bearing component having a surface hardness of 63 to 67 in terms of Rockwell hardness C and a surface retained austenite content of at least 20 % to less than 25 % including a step of carburizing and quenching a bearing component workpiece prepared from a carburizing steel having a carbon content of 0.1 to 1.0 weight % carbon and machined to a predetermined shape, a step of subjecting the resulting workpiece to a preliminary tempering treatment by maintaining the workpiece at 110°C to 130°C for at least one hour, a step of subjecting the tempered workpiece to a sub-zero treatment by maintaining the workpiece at -50°C to -80°C for at least one hour, and a step of subjecting the treated workpiece to a main tempering treatment by maintaining the workpiece at 140°C to 175°C for at least two hours.
摘要翻译： 包括以下步骤的生产轴承部件的方法，该轴承部件具有洛氏硬度C表面硬度为63至67并且表面残余奥氏体含量为至少20％至小于25％的渗碳和淬火步骤： 将碳含量为0.1〜1.0重量％的碳的渗碳钢加工成规定的形状的工序;将工件保持在110℃〜130℃的温度下1小时以上的工件进行预备回火处理的工序 通过将工件保持在-50℃至-80℃至少1小时来对回火后的工件进行零度下处理的步骤以及通过将处理后的工件维持在主回火处理 工件在140°C至175°C下至少2小时。
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公开(公告)号：EP0718416A1
公开(公告)日：1996-06-26
申请号：EP95118566.9
申请日：1995-11-24
CPC分类号： F16C33/62 , C21D6/002 , C21D9/40 , C23C8/22 , Y10S148/906
摘要： There is disclosed herein a steel alloy bearing having an inner race, an outer race and rolling elements comprising: at least one of said elements being made of alloy steel which constitutes from 10.0 to 18.0 wt% chromium and 0.05 to 0.30 wt% carbon, 0.10% to 2.0 wt% molybdenum, 0.15 to 1.0 wt% silicon, 0.20 to 1.5 wt% manganese, 0.8 to 1.2 wt% tungsten, 0.20 to 0.30 wt% vanadium, 0.2 to 1.0 wt% of nickel, and the remainder of said steel alloy being iron; and said at least one element having been carburized in a carbon atmosphere containing from 0.25 to about 0.40 % carbon potential.
摘要翻译： 本文公开了具有内圈，外圈和滚动元件的钢合金轴承，其包括：至少一个所述元件由合金钢制成，其为10.0至18.0重量％的铬和0.05至0.30重量％的碳，0.10 ，2.0〜2.0重量％的钼，0.15〜1.0重量％的硅，0.20〜1.5重量％的锰，0.8〜1.2重量％的钨，0.20〜0.30重量％的钒，0.2〜1.0重量％的镍， 是铁的 并且所述至少一种元素在含有0.25至约0.40％碳势的碳气氛中渗碳。
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公开(公告)号：EP0543010A1
公开(公告)日：1993-05-26
申请号：EP91914220.8
申请日：1991-08-07
发明人： KOBAYASHI, Kazuya, Niigata Plant, , NAGAHARA, Shigeyoshi, Niigata Plant, , HOSONO, Hikaru, Niigata Plant,
CPC分类号： C22C33/0264 , B22F3/24 , B22F5/10 , B22F2998/00 , C21D1/10 , C21D9/40 , Y02P10/253 , B22F5/106
摘要： A process for producing an annular part excellent in abrasion resistance and mechanical strength, wherein the surface layer of which an abrasion resistance is required has a hardness of HRC (58 to 63) and the inside has a hardness of HRC (25 to 40), said process comprising subjecting a powdery raw material composed of 0.4 to 0.9 wt.% of carbon 1.5 to 4.0 wt.% of nickel, 0.2 to 0.6 wt.% of molybdenum, and the balance of iron and inevitable impurities to compression molding, sintering, forging, hardening at a temperature ranging from 800 to 950 °C, high-temperature tempering at a temperature ranging from 570 to 700 °C for 20 to 60 min, hardening of the surface layer(s) of the inner and/or outer periphery of the sinter, and if necessary low-temperature tempering at a temperature ranging from 160 to 220 °C.
摘要翻译： 一种制造耐磨性和机械强度优异的环形部件的方法，其中需要耐磨性的表面层具有HRC（58-63）的硬度，并且内部具有HRC（25-40）的硬度， 所述方法包括将由0.4-0.9重量％的碳组成的粉末原料，1.5至4.0重量％的镍，0.2-0.6重量％的钼，余量的铁和不可避免的杂质经受压缩成型，烧结， 在800〜950℃的温度下进行锻造，硬化，在570〜700℃的温度下进行20〜60分钟的高温回火，硬化内外表面层 的烧结物，如果需要，在160-220℃的温度下进行低温回火
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公开(公告)号：EP4434744A1
公开(公告)日：2024-09-25
申请号：EP24159913.3
申请日：2024-02-27
发明人： HASEGAWA, Shin , ITO, Kosuke , ASABA, Ryo
IPC分类号： B32B15/01 , B23K25/00 , B23K26/00 , B23K26/342 , B23K26/354 , C21D9/40 , C22C13/00 , C22C13/02 , C22C38/00 , F16C33/00 , B22D19/16
CPC分类号： F16C33/00 , B32B15/013 , C22C38/00 , C21D9/40 , C22C13/00 , C22C13/02 , B23K25/005 , B23K26/342 , B22D19/0009 , B22D19/08 , B22D19/085 , B22D21/027
摘要： A sliding member (10) of the present embodiment includes a Sn alloy layer (11) and an Fe-based back metal layer (12). In any observation cross-section (20) at an interface (21) between the Sn alloy layer (11) and the back metal layer (12), an entire length in which a Sn alloy matrix (13) included in the Sn alloy layer (11) and the back metal layer (12) are in contact with each other is 30% or more of an entire length of the interface (21). In the observation cross-section (20), a sum of areas of the intermetallic compound (14) is 40% or more and 70% or less of a total area of the Sn alloy layer (11). When a plurality of viewing fields having the same area are freely extracted from a cross section of the Sn alloy layer (11), a difference D=A-B between an area percentage A% in a first viewing field having the maximum area percentage of the intermetallic compound (14) among the plurality of viewing fields and an area percentage B% in a second viewing field having the minimum area percentage of the intermetallic compound (14) among the plurality of viewing fields is equal to or smaller than 20%.
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公开(公告)号：EP3630387B1
公开(公告)日：2024-08-28
申请号：EP18810167.9
申请日：2018-05-31
IPC分类号： C21D9/40 , F16C33/14 , F16C33/10 , F16C17/06 , B21D53/10 , C22C38/44 , C22C38/04 , C22C38/02 , C21D8/02 , C21D6/00 , C21D1/42 , C21D1/30 , C21D1/26 , C21D1/18 , F16C33/00 , B21J5/00 , B21J1/06 , B21J5/02 , B21K1/04 , B24D11/00 , F16C17/04
CPC分类号： F16C2220/4620130101 , F16C2220/7020130101 , C21D9/40 , F16C17/04 , F16C33/14 , C21D2261/0020130101 , F16C2223/1020130101 , C21D1/18 , C21D1/30 , C21D1/26 , C21D1/42 , C21D6/002 , C21D8/0205 , C22C38/04 , C22C38/02 , C22C38/44 , F16C17/06 , F16C33/108 , B21J1/06 , B21J5/022 , B21J5/025 , B21K1/04 , B24D11/001 , Y02P10/25
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公开(公告)号：EP4415481A1
公开(公告)日：2024-08-14
申请号：EP23869288.3
申请日：2023-09-28
申请人： NSK Ltd.
发明人： KAWAKAMI Kinya , IZUMI Shinji , KIKUCHI Tokumasa , KOYAMA Hiroshi
摘要： An induction heating method includes a step of supplying a ring-shaped member (Mr) to a predetermined section serving as a heating target section using an induction coil, and a step of moving the ring-shaped member (Mr) along a reference axis so as to pass through the predetermined section. The moving step includes controlling contact between the ring-shaped member (Mr) and a different member by a contact control portion (54).
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公开(公告)号：EP4400612A1
公开(公告)日：2024-07-17
申请号：EP22878388.2
申请日：2022-09-28
申请人： NTN Corporation
发明人： YAMADA, Masahiro , SATO, Miyu , MIWA, Noriaki , MIZUTA, Kohei , OHKI, Chikara
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 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.
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公开(公告)号：EP4394058A1
公开(公告)日：2024-07-03
申请号：EP22860917.8
申请日：2022-05-27
申请人： NSK Ltd.
发明人： NATORI, Masahide , KOMATA, Hiroki
摘要： There is provided a rolling bearing capable of suppressing the occurrence of white structure spalling. A rolling bearing contains a structure having a solid solution carbon amount in a martensitic structure after heat treatment of 0.35 mass% or more and 0.65 mass% or less and a volume ratio of spheroidized carbides having a diameter of 200 nm or more of 4.5% or less.
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119.发明公开
公开(公告)号：EP4373978A1
公开(公告)日：2024-05-29
申请号：EP21749160.4
申请日：2021-07-23
申请人： Aktiebolaget SKF
发明人： SHERIF, Mohamed
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