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Advantages and disadvantages of die-cast aluminum alloy and its application 2020-03-20

Advantages:

1. Good thermal conductivity, electrical conductivity and cutting performance of aluminum alloy;

2. The aluminum alloy wire has small shrinkage, so it has good filling performance;

3. Aluminum alloy has small density and high strength, and its ratio of tensile strength to density is 9 ~ 15. It also maintains good mechanical properties when working at high or low temperature;

4. Aluminum alloy has good corrosion resistance and oxidation resistance. Most aluminum alloys have good corrosion resistance in fresh water, sea water, concentrated nitric acid, nitric acid, gasoline, and various organic substances.

 

Disadvantages:

1. low hardness, at the same time wear resistance is also relatively poor;

2. The volume shrinkage is relatively large during solidification, approximately 6.6%;

3. The linear expansion coefficient is relatively high;

4. Easy-to-stick mold, it is necessary to strictly control the iron content in the range of 0.8% -0.9%;

5, low melting point, high temperature use is limited.

 

Application:

Aluminum alloy can replace bronze for low-, medium-speed and medium-temperature heavy-duty bearings, and the price is 50% lower than bronze bearings.

Profiles can also be produced by continuous casting or centrifugal casting to make bearings, bushings, etc.

It can also be used to make molds, widely used to make bearings, various pipe joints, pulleys, and various impacted and worn castings.

Die-cast aluminum alloy has a wide range of applications, mainly used in military, automotive, engineering construction, power, electronics, computers, household appliances, high-fidelity speakers, military ships, aviation, aerospace and other military industries.

 

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