Plain bearing alloy consisting of a tin-based white metal

Abstract

The plain bearing alloy consists of white alloy on tin basis, antimony as main alloy element and copper (1-10 wt.%). Cadmium-, lead-, arsenic- and chromium free white alloy consists of 4-30 wt.% of antimony, an element group containing the element of cobalt, manganese, scandium and germanium in a total concentration of 0.2-2.6 wt.% related to the used elements of the group and / or an element group containing an element of magnesium, nickel, zirconium and titanium in the total concentration of 0.05-1.7 wt.% related to the used elements of the group. The plain bearing alloy consists of white alloy on tin basis, antimony as main alloy element and copper (1-10 wt.%). Cadmium-, lead-, arsenic- and chromium free white alloy consists of 4-30 wt.% of antimony, an element group containing the element of cobalt, manganese, scandium and germanium in a total concentration of 0.2-2.6 wt.% related to the used elements of the group and / or an element group containing an element of magnesium, nickel, zirconium and titanium in the total concentration of 0.05-1.7 wt.% related to the used elements of the group. The total part of antimony and copper is 35 wt.% corresponding to the triple copper content. The white alloy consists of 13-18 wt.% of antimony, 3.5-5.5 wt.% of copper and 0.7-0.9 wt.% of zinc, and an element of silver, gold, vanadium and iron. The single portion of the alloy element is 4 wt.% and the total portion of the alloy element is 8 wt.%. The white alloy consists of aluminum content of 0.05-2.5 wt.% and possesses a silicon portion. The aluminum and silicon exist as heterogeneous phase mixture and the aluminum content corresponds to the 7-45 times of the silicon portion. The white alloy consists of lithium content of 0.05-1.6 wt.% and consists of rare earth metals in a total concentration of 1.3 wt.%.

Description

technical field [0001] The invention relates to plain bearing alloys made of tin-based white metals (Weiβ metall) which contain antimony as the main alloying element and 1 to 10% by weight of copper. Background technique [0002] Tin-based plain bearing alloys are known (GB 2 146 354 A) which may have 2-15% by weight of antimony, 1-10% by weight of copper, up to 15% by weight of lead and other alloying elements, Such as cadmium, nickel, silver, tellurium, cobalt, magnesium, manganese and arsenic, the titanium content of 0.005 to 0.5% by weight refines the microstructure of the bearing workpiece and thus improves the allowable load of the sliding bearing . In order to improve environmental friendliness The load-carrying capacity (Belastbarkeit) of the white metal alloy (Weiβmetallegierungen) has been proposed (DE 101 45 389 C2) to use, in addition to 6-15% by weight of antimony and 3-10% by weight of copper, a content of 0.1-18 % by weight bismuth. Despite this measure,...

AI Technical Summary

Problems solved by technology

Despite this measure, the known plain bearing alloys, which do not contain environmentally harmful alloy components, do not meet the higher strength requirements and thus the higher demands on load-carrying capacity and wear and tear resistance Aluminum-based bearing metals are often chosen in the case of aluminum-based bearing metals, although the excellent emergency start characteristics of tin-based bearing metal alloys must be sacrificed when using this bearing metal (Notlaufeigenschaft)