摘要:
[Task] Seizure resistance of sliding material based on graphite-added resin is improved. [Means for Solution] A sliding material based on graphite-added resin has composition (1); graphite: average particle diameter of from 5 to 50 µm, a degree of graphitization of 0.6 or more, the number of graphite particles having a minimum diameter/maximum diameter ratio of 0.5 or more amounts to 50% or more of the total number of the graphite particles observed in a photograph of an optional cross section, content 5 to 60% by weight, as well as composition (2). balance of polyimide resin and/or polyamide-imide resin.
摘要:
[Task] In the provided Cu-based sliding material, the properties equivalent to those of a Pb-containing material is attained even free of Pb, and material has stable friction coefficient. [Solution Means] A Pb-free copper-alloy sliding material contains 1.0 to 15.0% of Sn, 0.5 to 15.0% of Bi and 0.05 to 5.0% of Ag, and Ag and Bi from an Ag-Bi eutectic. If necessary, at least one of 0.1 to 5.0% of Ni, 0.02 to 0.2% P, and 0.5 to 30.0% of Zn is contained. Further, if necessary, 1.0 to 10.0 mass % of at least one of a group consisting of Fe 3 P, Fe 2 P, FeB, NiB and AlN, having an average particle diameter of 1.5 to 70 µm is contained.
摘要:
In order to make the wear-resistance and machinability of the copper-based sliding material, in which such particles as AlN, Al 2 O 3 , NiB, Fe 2 B, SiC, TiC, WC, Si 3 N 4 , Fe 3 P, Fe 2 P and/or Fe 3 B are dispersed in the matrix consisting of sintered Cu or Cu alloy, the dispersion is performed such that the weight proportion and the average particle diameter of the medium-hardness particles of Hv 500 or more and 1000 or less are greater than those of the high-hardness particles having Hv 1100 or more.
摘要:
A copper-base sliding material comprising a matrix made from sintered copper or alloy thereof and, dispersed therein, particles of A1N, Al2O3, NiB, Fe2B, SiC, TiC, WC, Si3N4, Fe3P, Fe2P and/or Fe3B, wherein the particles are dispersed after being regulated with respect to the hardness and quantity in such a manner that the weight percentage and average diameter of medium-hardness particles with Hv500 to 1000 are greater than those of higher-hardness particles with Hv1100 or above in order that the slipperiness and the machinability are both satisfactory.
摘要:
The present invention relates to sliding material provided by sintering a lead-free copper or copper alloy and contains at least one mineral selected from the group consisting of talc, mica, kaolinite mineral and Montmorillonite mineral. Pb has conventionally been included in sliding materials for the purpose of obtaining conformability and seizure resistance. Despite the absence of Pb, the Pb-free copper-based sliding material and sliding parts according to the present invention have improved sliding properties.
摘要:
Sliding parts are made of Pb-free Cu-Bi based sintered material. The side in contact with a shaft is machined to a predetermined roughness. A number of Bi phases are present on the finished surface. Stable performance of Bi is to be exhibited. Machined sintered material covers a portion of the Bi phases. The ratio of the exposed surface area of the Bi phases is 0.5% or more relative to the area of the finished surface.