Performance and application of aluminum castings | aluminum cast plate

Cast aluminum alloy has some advantages that other castings cannot match, such as beautiful appearance, light weight, corrosion resistance, etc., making it widely favored by users, especially since the lightweight of automobiles, cast aluminum alloy castings have been widely used in the automotive industry Applications.
The density of cast aluminum alloy is lower than that of cast iron and cast steel, but its specific strength is higher. Therefore, the use of aluminum alloy castings under the same load conditions can reduce the weight of the structure. Therefore, 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. They are used in heat exchange devices used in chemical production, and parts that require good thermal conductivity on power machinery, such as the cylinder heads and pistons of internal combustion engines. They are also suitable for aluminum alloys. manufacture.
Aluminum alloy has 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), casting methods such as metal mold and pressure casting can be widely used to improve the inherent quality, dimensional accuracy and surface of the casting Smoothness and production efficiency. Due to the large latent heat of solidification of aluminum alloy, under the same weight, the solidification process of molten aluminum lasts much longer than cast steel and cast iron, and has good liquidity, which is conducive to casting thin-walled and complex-structured castings.
Cast aluminum alloy castings have many advantages, making it the development direction of the foundry 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 own on a larger stage. Demeanor.
Analysis of urgent problems to be solved in the future development of domestic aluminum alloy casting industry
Reducing energy consumption, reducing environmental pollution and saving limited resources is a very important and urgent task facing all countries today. Driven by the general trend of lightweight products such as automobiles, it can be predicted that my country's light metal casting market will have a substantial development in the next 10 years. The proportion of aluminum and magnesium alloy castings in the major casting production countries is between 13% and 19%, and in some countries (such as Italy) it is as high as 30% to 40%. However, the proportion of aluminum and magnesium alloy castings in my country is not To 10%. More than 90% of aluminum castings in developed countries are used in the automobile parts manufacturing industry. In my country, there are many problems to be solved for aluminum alloy castings to form large-scale production and meet the requirements of automobile lightweight: first, the requirements of automobiles on aluminum castings Thin wall, complex shape, high strength, high quality development direction. In order to meet this requirement, the casting process should be further optimized and the development of new alloy materials should be carried out. Second, the production cost should be reduced from the perspective of design and process, such as the use of one-mold multi-part technology and automation technology to increase productivity, extend the service life of the mold, and use an integrated design to reduce the number of parts. Third, use computer simulation technology to shorten the development cycle of the process plan. Fourth, increase the recovery of aluminum. Recycled aluminum is the main raw material for aluminum casting. While developing the foundry industry, my country should pay attention to the utilization of recycled aluminum resources, develop technologies for effectively separating aluminum from composite and dissimilar materials, and establish a wide range of waste recycling systems.
aluminum cast plate

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