公开(公告)号：US20210025451A1

公开(公告)日：2021-01-28

申请号：US16931704

申请日：2020-07-17

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Masahiro NAKAI

IPC: F16C33/12 ,  B32B15/01 ,  C22C9/00

Abstract: A sliding member includes a back-metal layer including an Fe alloy and a sliding layer including a copper alloy including 0.5 to 12 mass % of Sn and the balance of Cu and inevitable impurities. A cross-sectional structure of the sliding layer includes first copper alloy grains in contact with a bonding surface and second copper alloy grains not in contact with the bonding surface. The first and second grains have an average grain size D1 and D2 respectively. D1 is 30 to 80 μm; and D1/D2=0.1 to 0.3. In the cross-sectional structure, the second grains includes third grains that includes internal grains therein that are not in contact with a grain boundary of the third grains. A total area S1 of the third grains and a total area of the second copper alloy grains S2 satisfy: S0/S2=0.25 to 0.80.

公开(公告)号：US20230313835A1

公开(公告)日：2023-10-05

申请号：US18122550

申请日：2023-03-16

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Takashi MORIKAWA ,  Masahiro NAKAI

IPC: F16C33/12 ,  F16C33/14 ,  B22D13/02 ,  B22D19/08

CPC classification number: F16C33/121 ,  F16C33/14 ,  B22D13/02 ,  B22D19/08 ,  F16C2204/18

Abstract: A sliding member includes a base material and an alloy layer that includes Cu as a main component and Bi and having a sliding surface formed on a side opposite to the base material. The alloy layer has a first region and a second region. The first region is set to a region taking up 30% of the thickness of the alloy layer which is from an interface in contact with the base material toward the sliding surface. The second region is set to a region taking up 10% of the thickness of the alloy layer which is from the sliding surface toward the base material. A larger number of Bi phases having larger cross-sectional areas are distributed in an arbitrary observation cross section as Bi phases included in the second region compared to Bi phases included in the first region.

公开(公告)号：US20210025450A1

公开(公告)日：2021-01-28

申请号：US16931689

申请日：2020-07-17

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Masahiro NAKAI

IPC: F16C33/12 ,  B32B15/01 ,  C22C9/00

Abstract: A sliding member includes a back-metal layer including an Fe alloy and a sliding layer including a copper alloy including 0.5 to 12 mass % of Sn and the balance of Cu and inevitable impurities. The sliding layer has a cross-sectional structure perpendicular to a sliding surface of the sliding layer. The cross-sectional structure includes first copper alloy grains that are in contact with a bonding surface of the back-metal layer and second copper alloy grains that are not in contact with the bonding surface. The first copper alloy grains has an average grain size D1 and the second copper alloy grains has an average grain size D2. D1 and D2 satisfy the following relations: D1 is 30 to 80 μm; and D1/D2=0.1 to 0.3.

公开(公告)号：US20240401639A1

公开(公告)日：2024-12-05

申请号：US18698085

申请日：2023-03-28

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Ryo ASABA ,  Masahiro NAKAI

IPC: F16C29/02 ,  F03D15/00 ,  F16C33/12

Abstract: A sliding member includes a base material. A sliding layer is laminated on the base material and has a matrix and particle phases uniformly and finely dispersed in the matrix. An arbitrary observation cross section is set in the sliding layer, and area rates Sv of the particle phases in the plurality of arbitrary observation regions extracted from the observation cross section are 0.2%≤Sv≤5% in all of the observation regions. A maximum particle diameter Da of the particle phases is 0 μm

公开(公告)号：US20240117839A1

公开(公告)日：2024-04-11

申请号：US18377197

申请日：2023-10-05

Applicant: DAIDO METAL COMPANY LTD.

Inventor： Masahiro NAKAI ,  Ryo ASABA

IPC: F16C17/02 ,  B23K9/04

CPC classification number: F16C17/02 ,  B23K9/04 ,  F16C2204/10 ,  F16C2226/36

Abstract: 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.