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    SLIDING MEMBER AND METHOD FOR PRODUCING THE SAME
    3.
    发明公开
    SLIDING MEMBER AND METHOD FOR PRODUCING THE SAME 审中-公开

    公开(公告)号：US20240117839A1

    公开(公告)日：2024-04-11

    申请号：US18377197

    申请日：2023-10-05

    申请人： DAIDO METAL COMPANY LTD.

    发明人： Masahiro NAKAI ,  Ryo ASABA

    IPC分类号： F16C17/02 ,  B23K9/04

    CPC分类号： F16C17/02 ,  B23K9/04 ,  F16C2204/10 ,  F16C2226/36

    摘要： A sliding member includes a substrate containing Fe as a main component and an alloy layer overlaid on the substrate and composed of a Cu-base alloy containing 6 to 12% by mass of Ni and 3 to 9% by mass of Sn. The alloy layer has a body layer and an intermediate layer. The body layer is formed of the Cu-base alloy, while the intermediate layer is composed of an alloy containing Ni, Sn, and Cu which are derived from the Cu-base alloy and Fe derived from the substrate. Taking side close to the substrate as a lower region and the other side as an upper region, a ratio of the total area of hard phases to the observation section of the upper region is 1.2 to 3.0, where the ratio of the total area of the hard phases to the observation section of the lower region is set at 1.

    SLIDE MEMBER
    6.
    发明公开
    SLIDE MEMBER 审中-公开

    公开(公告)号：US20230228296A1

    公开(公告)日：2023-07-20

    申请号：US18153393

    申请日：2023-01-12

    申请人： DAIDO METAL COMPANY LTD.

    发明人： Tomoyasu SHIROYA ,  Akira ANDO

    IPC分类号： F16C33/12

    CPC分类号： F16C33/125 ,  F16C33/124 ,  F16C2204/36

    摘要： A sliding member includes a bearing alloy layer and an overlay. The overlay includes a diffusion prevention layer on the bearing alloy layer, and a corrosion prevention layer on the diffusion prevention layer. A surface of the corrosion prevention layer is a sliding surface. The corrosion prevention layer constitutes 50% to 90% of an entire volume of the overlay. The corrosion prevention layer and the diffusion prevention layer each include a corrosion inhibitor and the balance of Bi and inevitable impurities. The corrosion inhibitor is defined as one or more elements that have a higher oxygen affinity than Bi and that form an alloy, a solid solution or an intermetallic compound with Bi. An average concentration of the corrosion inhibitor included in the diffusion prevention layer is lower than an average concentration of the corrosion inhibitor included in the corrosion prevention layer.

    Half thrust bearing and bearing device for crankshaft of internal combustion engine
    8.
    发明授权
    Half thrust bearing and bearing device for crankshaft of internal combustion engine 有权

    公开(公告)号：US11619256B2

    公开(公告)日：2023-04-04

    申请号：US17696128

    申请日：2022-03-16

    申请人： DAIDO METAL COMPANY LTD.

    发明人： Tomohiro Yamada

    IPC分类号： F16C9/02 ,  F01M11/02

    摘要： A half thrust bearing for a crankshaft of an internal combustion engine is formed of a back metal layer and a bearing alloy layer to have a slide surface and two thrust reliefs. Each thrust relieve includes a first region, where the back metal layer is exposed, on a circumferential end surface side, and a second region, where the bearing alloy layer is exposed, on the slide surface side while the slide surface includes two third regions adjacent to the second region, and a fourth region between the two third regions. A circumferential end region consists of the first, second and third regions. In the second region and the third regions, the bearing alloy layer includes a uniform thickness portion at a radial center, and a decreased thickness portion adjacent to an inner-diameter-side end surface.

    Half bearing and sliding bearing
    9.
    发明授权
    Half bearing and sliding bearing 有权

    公开(公告)号：US11566658B2

    公开(公告)日：2023-01-31

    申请号：US17587305

    申请日：2022-01-28

    申请人： DAIDO METAL COMPANY LTD.

    发明人： Daiki Iida ,  Yasushi Saito

    IPC分类号： F16C9/02 ,  F16C9/04 ,  F16C3/14 ,  F01M11/02

    摘要： Provided is a half bearing constituting a sliding bearing for a shaft member of an internal combustion engine that is unlikely to cause seizure in a sliding surface even if deflection or whirling of the shaft member occurs during an operation of the internal combustion engine. In a half bearing that constitutes a sliding bearing, a plurality of circumferential-direction grooves are formed to be adjacent to each other in a sliding surface including first and second curved surfaces with different curvatures, the sliding surface includes a plane portion that is parallel to an axial line direction and an inclined surface portion that is adjacent to the plane portion, the inclined surface portion is displaced from the plane portion toward an end portion of the sliding surface in the axial line direction such that the sliding surface successively comes close to a back surface, positions of maximum groove depths of the circumferential-direction grooves are located on groove center lines, the groove center lines in the inclined surface portion of the sliding surface are inclined relative to a vertical line toward the end portion of the sliding surface in the axial line direction, a groove inclination angle of the circumferential-direction grooves that are closest to the plane portion is a minimum angle, and the groove inclination angle successively increases toward the end portion of the sliding surface in the axial line direction.

    HALF BEARING AND SLIDING BEARING
    10.
    发明申请
    HALF BEARING AND SLIDING BEARING 有权

    公开(公告)号：US20220260110A1

    公开(公告)日：2022-08-18

    申请号：US17587305

    申请日：2022-01-28

    申请人： DAIDO METAL COMPANY LTD.

    发明人： Daiki IIDA ,  Yasushi SAITO

    IPC分类号： F16C9/02

    摘要： Provided is a half bearing constituting a sliding bearing for a shaft member of an internal combustion engine that is unlikely to cause seizure in a sliding surface even if deflection or whirling of the shaft member occurs during an operation of the internal combustion engine. In a half bearing that constitutes a sliding bearing, a plurality of circumferential-direction grooves are formed to be adjacent to each other in a sliding surface including first and second curved surfaces with different curvatures, the sliding surface includes a plane portion that is parallel to an axial line direction and an inclined surface portion that is adjacent to the plane portion, the inclined surface portion is displaced from the plane portion toward an end portion of the sliding surface in the axial line direction such that the sliding surface successively comes close to a back surface, positions of maximum groove depths of the circumferential-direction grooves are located on groove center lines, the groove center lines in the inclined surface portion of the sliding surface are inclined relative to a vertical line toward the end portion of the sliding surface in the axial line direction, a groove inclination angle of the circumferential-direction grooves that are closest to the plane portion is a minimum angle, and the groove inclination angle successively increases toward the end portion of the sliding surface in the axial line direction.