Bearing for copper-based heavy-load self-lubricating ship and preparation method thereof

Abstract

The invention relates to preparation of a sliding bearing, in particular to a bearing for a copper-based heavy-load self-lubricating ship and a preparation method of the bearing. According to the technical scheme, the bearing for the copper-based heavy-load self-lubricating ship comprises a steel back and an anti-abrasion structure integrally connected with the steel back, wherein the anti-abrasion structure is prepared from the following materials in parts by weight: 9 to 15 parts of nickel-plated graphite, 0.1 to 0.3 part of rare earth and 90.5 to 91.5 parts of aluminum-bronze alloy; and the aluminum-bronze alloy consists of 72 to 90 parts of copper, 12.8 to 13.6 parts of aluminum, 4.6 to 7.2 parts of iron, less than 0.10 part of manganese, 6.0 to 7.4 parts of nickel, less than 0.05 part of lead and less than 0.5 part of zinc. The bearing has relatively high tensile strength, relatively low friction coefficient and relatively low abrasion rate.

Description

technical field [0001] The invention relates to the preparation of a sliding bearing, in particular to a copper-based heavy-duty self-lubricating marine bearing and a preparation method thereof. Background technique [0002] The bearing bush is one of the important parts in the internal combustion engine. Its performance and structure not only affect the performance, working reliability and life of the internal combustion engine, but also affect the structural design of the internal combustion engine itself; , will produce a large centrifugal force and axial thrust; especially when the operating conditions change, it may also produce greater rotational torque and instantaneous axial thrust and reverse thrust. It can be seen that the bearing is under heavy load when it is working; At the same time, due to the heavy-duty rotation of the journal, there are high requirements for the wear resistance of the bearing. [0003] Sliding bearings in the prior art, such as a high-tempe...

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Problems solved by technology

[0003] Sliding bearings in the prior art, such as a high-temperature-resistant self-lubricating sliding bearing disclosed in the invention patent application with the publication number CN102278373A, belong to the technical field of sliding bearings whose sliding surface is mainly composed of nano-scale natural fish scale graphite, including the bearing body , the bearing main body is composed of natural fish scale graphite, copper and molybdenum dioxide; the purity of the natural fish scale graphite is 99.9%, and the proportion of natural fish scale graphite content in the bearing main body is 35-70%; the copper purity is 99% %, the proportion of copper content in the bearing main body is 25-60%; the purity of the molybdenum dioxide is 99%, and the proportion of molybdenum dioxide content in the bearing main body is 3-8%; and a high temperature resistant The preparation method of self-lubricating sliding bearing, which is made of nano-scale natural fish scale graphite powder, nano-sized copper powder and micron-sized molybdenum dioxide powder through mechanical mixing, pressing and molding, and then sintering in a sintering furnace; Poor tensile strength

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