A high wear-resistant shaft-free aluminum-based alloy and its preparation method

Abstract

The invention discloses an aluminum base alloy which comprises the following components in percent by weight: 38-40% of zinc, 0.5-5% of silicon, 3.0-5% of copper, 0.5-1% of manganese, 0.3-0.5% of chromium, 1.2-1.8% of rhenium, 1-1.5% of boron, 0.038-0.048% of magnesium, 0.015-0.02% of titanium and the balance of aluminum. The invention further discloses a preparation method thereof. The aluminum base alloy disclosed by the invention has the advantages of high wear resistance, no axle-hang, low expansion rate, self-lubrication, anti-occluding function and high work temperature, and the low expansion rate of the alloy is realized, so that the aluminum base alloy is suitable for manufacturing various precise friction pair parts of mechanical equipment.

Description

technical field

[0001] The invention relates to a light alloy and a preparation method thereof, in particular to a high wear-resistant shaft-free aluminum base alloy and a preparation method thereof. Background technique

[0002] Copper, oil and gas are the strategic resources of a country and the guarantee of national security. my country's copper resource reserves are relatively scarce and of low quality, but its annual consumption is second only to the United States. It needs to spend a lot of foreign exchange to import copper materials every year. It is rich in highly toxic and harmful elements such as lead, phosphorus, arsenic, beryllium, and cadmium. The casting process causes serious pollution to the surrounding environment. However, my country's aluminum resources are relatively rich, and there is a certain amount of aluminum ingots exported in exchange for foreign exchange every year. Upgrading of traditional industries to achieve sustainable scientific development....

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