发明名称 |
Sliding part and method of manufacturing the same |
摘要 |
There is provided a sliding part in which a surface coverage ratio of copper in the sliding part increases. A bearing which is the sliding part is formed by filling the raw powder into the filling portion of the forming mold, compacting the raw powder to form a powder compact, which is sintered. A copper-based raw powder is composed of a copper-based flat raw powder whose diameter is smaller than that of an iron-based raw powder and an aspect ratio larger than that of the iron-based raw powder, and a copper-based small-sized raw powder whose diameter is smaller than that of the copper-based flat raw powder. The copper is allowed to segregate at the surface of the sliding part. The surface of the bearing is covered with the copper-based small-sized raw powder and the copper-based flat raw powder, thereby the surface coverage ratio of copper can be increased. |
申请公布号 |
US9017599(B2) |
申请公布日期 |
2015.04.28 |
申请号 |
US201213486708 |
申请日期 |
2012.06.01 |
申请人 |
Diamet Corporation |
发明人 |
Shimizu Teruo;Maruyama Tsuneo |
分类号 |
B22F3/12;F16C33/14;B22F5/10;F16C33/12 |
主分类号 |
B22F3/12 |
代理机构 |
Leason Ellis LLP. |
代理人 |
Leason Ellis LLP. |
主权项 |
1. A method of manufacturing a sliding part comprising:
filling an iron-based raw powder and a copper-based raw powder into a filling portion of a forming mold; vibrating the filling portion of the forming mold at the accelerating speed of between 0.01 to 3G, wherein the powders filing the forming mold are uncompressed; compacting the raw powders to form a powder compact; and sintering the powder compact, wherein the copper-based raw powder is comprised of a copper-based flat raw powder having an average diameter smaller than that of the iron-based raw powder and an aspect ratio larger than that of the iron-based raw powder; and a copper-based small-sized raw powder having an average diameter smaller than that of the copper-based flat raw powder, and wherein part of the copper-based flat raw powders is segregated on the outer side within the filling portion by applying the vibration, and the grains of the copper-based small raw powder intrude into spaces formed between the grains of the iron-based raw powder to surround the grains of the iron-based raw powder by applying the vibration. |
地址 |
Niigata-Shi JP |