Lead-free bimetallic sliding bearing

Abstract

The invention discloses a lead-free bimetallic sliding bearing, aiming to provide another bimetallic sliding bearing which has the technical performance index equal to that of lead-bearing bimetallic sliding bearings, contains no lead or bismuth and is prepared by lead-free copper alloy bearing materials. The technical scheme is as follows: the bimetallic sliding bearing is prepared by conventionally rolling and molding the bimetallic sliding bearing sheets; the bimetallic sliding bearing sheets take steel as the base material; and a layer of alloy copper powder is sintered on one surface of the base material to prepare the bimetallic sliding bearing sheets which are characterized in that the alloy copper powder comprises the following components in percentage by mass: 5-12% of Sn, 1-2% of Ni, 0.05-0.20% of In and the balance Cu and inevitable impurities. The invention provides another broad way for manufacturing the lead-free bimetallic sliding bearing and has positive effects on environmental protection and human health.

Description

technical field

[0001] The invention relates to a sliding bearing, in particular to another lead-free bimetallic sliding bearing. Background technique

[0002] With high-quality carbon steel as the matrix and sintered bronze powder on the surface, it is suitable for swinging and rotating motions under heavy loads and low speeds. It has the characteristics of low friction coefficient, good wear resistance, long service life, and good anti-seizure performance. Various types of oil grooves, oil storage pits, oil pockets, etc. can be processed on the surface of the copper alloy metal layer according to the needs of the working conditions, so as to be suitable for occasions where it is impossible or difficult to refuel. Widely used in mining machinery, automobiles, construction machinery, agricultural machinery, steel rolling machinery, etc. Traditional bimetallic sliding bearings are made by directly sintering bronze powder on a flat steel plate to form a bimetallic bearing mat...