公开(公告)号：US07883588B2

公开(公告)日：2011-02-08

申请号：US11148186

申请日：2005-06-09

申请人： Hiromi Yokota ,  Daisuke Yoshitome ,  Hiroaki Hayakawa ,  Naruhiko Inayoshi ,  Youichi Murakami ,  Masashi Suzuki ,  Takahiro Nozu

发明人： Hiromi Yokota ,  Daisuke Yoshitome ,  Hiroaki Hayakawa ,  Naruhiko Inayoshi ,  Youichi Murakami ,  Masashi Suzuki ,  Takahiro Nozu

IPC分类号： C22C9/00 ,  F16C32/12

CPC分类号： C22C32/00 ,  C22C32/0073 ,  C22C32/0089 ,  F16C33/121 ,  F16C33/14 ,  F16C2220/20 ,  F16C2220/44 ,  F16C2220/82

摘要： In a Cu—Bi based sintered alloy, to which hard particles, such as Fe3P, are added, the main constituent components of the microstructure are a Cu matrix, Bi phase and the hard particles. In the sintering method of the present invention, the flow of the Bi phase is suppressed to as low level as possible. The novel structure is that the contact between the Bi phase and hard particles is kept to a low ratio. A lead-free bearing used for a fuel injection pump according to the present invention contains from 1 to 30 mass % of Bi and from 0.1 to 10 mass % of hard particles having from 10 to 50 μm of the average particle diameter, the balance being Cu and unavoidable impurities. The properties of the main component phases are utilized at a high level such that the sliding properties are equivalent to those of a Pb containing Cu-based sintered alloy.

摘要翻译： 在添加Fe 3 P等硬质粒子的Cu-Bi系烧结合金中，微观组织的主要成分为Cu基体，Bi相和硬质粒子。 在本发明的烧结方法中，Bi相的流动被抑制到尽可能低的水平。 新颖的结构是将Bi相与硬质颗粒之间的接触保持在较低的比例。 根据本发明的用于燃料喷射泵的无铅轴承包含1至30质量％的Bi和0.1至10质量％的平均粒径为10至50μm的硬颗粒，余量为 Cu和不可避免的杂质。 主要组分相的性质被利用在高水平，使得滑动性能等于含Pb的Cu基烧结合金的滑动性能。

公开(公告)号：US20060000527A1

公开(公告)日：2006-01-05

申请号：US11148186

申请日：2005-06-09

申请人： Hiromi Yokota ,  Daisuke Yoshitome ,  Hiroaki Hayakawa ,  Naruhiko Inayoshi ,  Youichi Murakami ,  Masashi Suzuki ,  Takahiro Nozu

发明人： Hiromi Yokota ,  Daisuke Yoshitome ,  Hiroaki Hayakawa ,  Naruhiko Inayoshi ,  Youichi Murakami ,  Masashi Suzuki ,  Takahiro Nozu

IPC分类号： C22C9/00

CPC分类号： C22C32/00 ,  C22C32/0073 ,  C22C32/0089 ,  F16C33/121 ,  F16C33/14 ,  F16C2220/20 ,  F16C2220/44 ,  F16C2220/82

摘要： In a Cu—Bi based sintered alloy, to which hard particles, such as Fe3P, are added, the main constituent components of the microstructure are a Cu matrix, Bi phase and the hard particles. In the sintering method of the present invention, the flow of the Bi phase is suppressed to as low level as possible. The novel structure is that the contact between the Bi phase and hard particles is kept to a low ratio. A lead-free bearing used for a fuel injection pump according to the present invention contains from 1 to 30 mass % of Bi and from 0.1 to 10 mass % of hard particles having from 10 to 50 μm of the average particle diameter, the balance being Cu and unavoidable impurities. The properties of the main component phases are utilized at a high level such that the sliding properties are equivalent to those of a Pb containing Cu-based sintered alloy.

摘要翻译： 在添加了Fe 3 P 3等硬质粒子的Cu-Bi系烧结合金中，微观结构的主要构成成分是Cu基体，Bi相和硬质粒子。 在本发明的烧结方法中，Bi相的流动被抑制到尽可能低的水平。 新颖的结构是将Bi相与硬质颗粒之间的接触保持在较低的比例。 根据本发明的用于燃料喷射泵的无铅轴承包含1至30质量％的Bi和0.1至10质量％的平均粒径为10至50微米的硬颗粒，余量为 Cu和不可避免的杂质。 主要组分相的性质被利用在高水平，使得滑动性能等于含Pb的Cu基烧结合金的滑动性能。