Aluminum bronze bushing

Overview

The copper-based alloy with aluminum as the main alloying element is aluminum bronze containing iron and manganese, which is a high-strength heat-resistant bronze. The aluminum content generally does not exceed 11.5%, and sometimes an appropriate amount of iron, nickel, manganese and other elements are added to further improve the performance. Aluminum bronze can be strengthened by heat treatment, its strength is higher than tin bronze, and its high temperature oxidation resistance is also better.
It has high strength and good wear resistance. It is used for high-strength screws, nuts, copper sleeves, sealing rings, etc., and wear-resistant parts. The most prominent feature is its good wear resistance. Because aluminum bronze containing iron and manganese elements has high strength and wear resistance, it can increase the hardness after quenching and tempering, and has good high temperature corrosion resistance and oxidation resistance. Corrosion resistance in the atmosphere, fresh water and sea water Very good, machinability is acceptable, welding is not easy to brazing, good pressure processing in hot state.

Performance

Aluminum bronze has many excellent properties. Aluminum bronze has high strength, hardness and wear resistance, and is often used to make gear blanks, threads and other parts. Aluminum bronze has good corrosion resistance, so it can be used to manufacture corrosion-resistant parts such as propellers and valves. Aluminum bronze does not produce sparks under impact, and can be used to make non-sparking tool materials. It has excellent thermal conductivity and stable rigidity. As a mold material, it has the advantages of not sticking to the mold and scratching the workpiece when stretching and calendering the stainless steel plate heat exchanger. It has become a new mold material. Aluminum bronze has a shape memory effect and has been developed as a shape memory alloy. Aluminum bronze alloys are relatively cheap and have become a partial substitute for some expensive metal materials, such as replacing tin bronze, stainless steel, and nickel-based alloys. It is precisely because of its excellent characteristics that aluminum bronze has become more and more popular and plays an important role in civil and military industries.

Commonly used China domestic brands

QAL7: It has high strength and elasticity, high corrosion resistance in the atmosphere, fresh water, sea water and certain acids. It can be processed under hot and cold pressure, and can be welded by electric welding and gas welding, but not easy to braze.

Purpose: Other elastic components that require corrosion resistance for the spring box.

QAL9-4: It has high strength, good friction reduction and good corrosion resistance. It can be hot-processed and welded, but it is not easy to braze.

Uses: high-strength, wear-resistant parts, such as bearings, bushings, gears, turbines, etc.; it can also manufacture nozzles, flanges, flat rocker arms, brackets, etc.

QAL10-4-4: It has stable mechanical properties below 400°C, good anti-friction properties, good corrosion resistance in the atmosphere, fresh water, and sea water. It can be hot processed and welded, but it is not easy to braze.

Purpose: High-strength wear-resistant parts box for parts that work below 400°C, such as bearings, shaft sleeves, gears, spherical seats, nuts, flanges, etc.