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Advantages and Disadvantages in Applications of Aluminum Alloy Die Castings

2024-05-24 00:00:00
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I. Advantages:
1, aluminum alloy has good thermal conductivity, electrical conductivity and cutting performance;
2, aluminum alloy line shrinkage is small, good filling performance;
3, aluminum alloy density is low, high strength, tensile strength and density ratio of 9-15. in high temperature or low temperature work can also maintain good mechanical properties;
4, aluminum alloy has good corrosion resistance and oxidation resistance. Most aluminum alloys have good corrosion resistance in fresh water, seawater, concentrated nitric acid, nitric acid, gasoline and various organic substances.
II.Disadvantages:
1, low hardness, while poor wear resistance;
2, volume shrinkage during solidification is large, about 6.6%;
3, the coefficient of linear expansion is relatively high;
4, the mold is easy to stick mold, iron content needs to be strictly controlled within the range of 0.8% -0.9%;
5, low melting point, limiting the use of high temperature.
III. Applications:
Aluminum alloy can be used instead of bronze for low, medium speed, medium temperature heavy-duty bearings, the price is 50% lower than bronze bearings.
Profiles can also be made by continuous casting or centrifugal casting to make axle tiles, bushings, etc..
Can also be used to make molds, widely used in the production of bearings, a variety of pipe fittings, pulleys and a variety of anti-impact wear-resistant castings.
Die-casting aluminum alloy has a wide range of uses, mainly used in automobiles, communication industry, engineering and construction, electric power, electronics, computers, household appliances, high-fidelity speakers, warships, aviation, aerospace and other military industries.