Advantages, Disadvantages and Applications of Die-cast Aluminum Alloy
Advantages of Aluminum die casting:
- Aluminum alloy has better thermal conductivity, electrical conductivity and cutting performance;
- Aluminum alloy wire shrinks less, so it has good filling performance;
- Aluminum alloy has low density and high strength, and its tensile strength to density ratio is 9-15. It also maintains good mechanical properties when working at high or low temperatures;
- 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 of die-cast aluminum alloy:
- Low hardness and poor wear resistance at the same time;
- The volume shrinkage during solidification is relatively large, about 6.6%;
- The coefficient of linear expansion is relatively high;
- Easy to stick molds, and iron content needs to be strictly controlled within the range of 0.8%-0.9%;
- The melting point is low and the use of high temperature is restricted.
Die-cast aluminum alloy can replace bronze as low, medium speed and medium temperature heavy-duty bearings, and the price is 50% lower than that of bronze bearings. Profiles can also be produced by continuous casting or centrifugal casting to manufacture bearings, bushings, etc. It can also be used to make molds, which are widely used to make bearings, various pipe joints, pulleys, and various impact and wear castings. Die-casting aluminum alloy has a wide range of applications, mainly used in military industries such as automobiles, engineering construction, electric power, electronics, computers, household appliances, high-fidelity speakers, military ships, aviation, aerospace,Power tools die casting part etc.