Casting aluminum alloy has some advantages that other castings cannot match, such as beautiful appearance, light weight, corrosion resistance, etc., which makes it widely favored by users. Especially since the lightweighting of automobiles, cast aluminum alloy castings have been widely used in the automotive industry.
The density of cast aluminum alloy is smaller than that of cast iron and cast steel, but the specific strength is higher. Therefore, the use of aluminum alloy castings under the same load conditions can reduce the weight of the structure, so aluminum alloy castings are widely used in the aviation industry and the manufacture of power machinery and transportation machinery. Aluminum alloy has good surface gloss and good corrosion resistance in the atmosphere and fresh water, so it has a wide range of uses in the manufacture of civil utensils. Pure aluminum has good corrosion resistance in oxidizing acid media such as nitric acid and acetic acid, so aluminum castings also have certain uses in the chemical industry. Pure aluminum and aluminum alloys have good thermal conductivity. Heat exchange devices used in chemical production and parts in power machinery that require good thermal conductivity, such as cylinder heads and pistons of internal combustion engines, are also suitable for manufacturing with aluminum alloys.
Aluminum alloys have good casting properties. Due to the low melting point (the melting point of pure aluminum is 660.230C, and the pouring temperature of aluminum alloy is generally about 730-750oC), metal mold and pressure casting and other casting methods can be widely used to improve the intrinsic quality, dimensional accuracy, surface finish and production efficiency of castings. Due to the large solidification latent heat of aluminum alloy, under the same weight conditions, the solidification process of aluminum liquid lasts much longer than cast steel and cast iron, and the release fluidity is good, which is conducive to casting thin-walled and complex structure castings.
Casting aluminum alloy castings have many advantages, making it the development direction of the casting industry and one of the most popular casting products for purchasing customers. In the future, with the advancement of aluminum alloy casting technology, it will show its style on a larger stage.
