A kind of high-strength, super wear-resistant copper alloy and preparation method thereof

Abstract

The invention discloses a high-strength super-wear-resisting copper alloy which consists of the following chemical components in percentage by mass: 55%-65% of Cu, 2%-6% of Al, 0.5%-5% of Fe, 0.2%-3% of Mn and the balance Zn. A preparation method for the high-strength super-wear-resisting copper alloy comprises the following steps of: separately weighing electrolytic copper, electrolytic aluminum, electrolytic iron, electrolytic manganese and electrolytic zinc according to chemical components; taking out part of the electrolytic copper and electrolytic zinc according to certain mass percent; melting residual electrolytic copper and electrolytic zinc as well as electrolytic aluminum, electrolytic iron and electrolytic manganese to smelt; after raw materials are completely molten, adding the taken-out electrolytic copper and electrolytic zinc into a furnace to carry out secondary smelting until all of the taken-out electrolytic copper and electrolytic zinc are molten again, thereby obtaining a molten copper alloy; and casting and molding the molten copper alloy in a centrifugal mould, thereby obtain the high-strength super-wear-resisting copper alloy. The high-strength super-wear-resisting copper alloy can solve the technical problems such as high product cost, poor product quality, short product service life and the like in the existing domestic nuclear power industry, the existing domestic aerospace industry and the existing domestic military industry very well to adapt to the technical requirements.

Description

technical field [0001] The invention relates to the technical field of metallurgy, and more specifically relates to a high-strength, super-wear-resistant copper alloy and a preparation method thereof. Background technique [0002] At present, the commonly used cast copper alloys can be divided into four categories according to their chemical composition: pure copper, bronze, brass and cupronickel. Its casting process can be divided into two categories: ordinary casting and special casting. Ordinary casting is a casting process in which the solution is cast in a mold by its own gravity; while special casting is divided into pressure casting, vacuum casting and centrifugal casting. [0003] At present, with the progress of society and the development of manufacturing industry, conventional cast copper alloys can no longer meet the requirements of mechanical equipment. For example, sliding bearings are widely used as frictional movable components due to their high precision a...

AI Technical Summary

Problems solved by technology

However, the use of beryllium copper has two major defects: one is that beryllium copper is expensive, which is not much better than imported products;

In the same way, the copper sleeve on the high-speed precision punching machine uses the existing traditional cast copper alloy, and there are also problems such as a short working life.

As we all know, once the main production equipment is shut down for maintenance, small molds and small equipment can cause the enterprise to lose about hundreds of thousands of yuan, while large molds and large equipment may bring millions or even tens of millions of economic losses.

This is a huge economic burden for the low-profit civilian industry, and there is still no good solution

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