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Aluminum Castings Corrosion Resistance And Other Advantages

Wuxi Hoohi Engineering Co.,Ltd | Updated: Sep 21, 2017

Aluminum casting refers to the use of casting processing methods and get pure aluminum or aluminum alloy device devices. Generally, sand or molds are used to melt the liquid aluminum or aluminum alloy into the mold cavity, and the various shapes and sizes of aluminum parts or aluminum parts are usually referred to as aluminum die castings.

Cast aluminum alloy has some other casting can not match the advantages, such as beautiful, light weight, corrosion resistance and other advantages, it is widely favored by the user, especially in the car since the weight of cast aluminum casting in the automotive industry has been widely Applications.

Cast aluminum alloy density than cast iron and cast steel is small, and the specific strength is higher. Therefore, under the same load conditions using aluminum alloy castings, can reduce the weight of the structure, so in the aviation industry and power machinery and transport machinery manufacturing, aluminum alloy castings are widely used. Aluminum alloy has a good surface gloss, in the atmosphere and fresh water has good corrosion resistance, it is in the manufacture of civilian utensils, with a wide range of uses. Pure aluminum in nitric acid and acetic acid and other oxidizing acid medium has good corrosion resistance, so aluminum casting in the chemical industry also has a certain use. Aluminum and aluminum alloys have good thermal conductivity, heat exchange devices used in chemical production, and parts requiring good thermal performance on powertrain, such as cylinder heads and pistons for internal combustion engines. They are also suitable for use with aluminum alloys manufacture.

Aluminum alloy has good casting performance. As the melting point is low (pure aluminum melting point of 660.230C, aluminum alloy pouring temperature is generally about 730 ~ 750oC or so), it can be widely used metal and pressure casting casting methods to improve the casting of the inherent quality, dimensional accuracy and surface Smoothness and productivity. Aluminum alloy due to solidification latent heat, under the same weight conditions, the solidification process of aluminum liquid longer than cast steel and cast iron much longer, put the flow of good, is conducive to casting thin and complex structure of the casting.

Cast aluminum alloy castings have many advantages, making it the direction of the development of the casting industry and the procurement of customers one of the most popular casting products, the future with the aluminum alloy casting technology progress, it will show their larger stage Style.

Analysis on the Problems to be Solved in the Future Development of Domestic Aluminum Alloy Casting Industry

Reducing energy consumption, reducing environmental pollution and conserving limited resources are a very important and urgent task facing today's countries. In the automotive and other products under the impetus of the general trend of lightweight, can be expected over the next 10 years, China's light metal casting market will have a substantial development. The proportion of aluminum and magnesium alloy castings in the major castings is between 13% and 19%. In some countries (such as Italy), the proportion of aluminum and magnesium alloy castings is as high as 30% to 40% To 10%. More than 90% of the developed countries for aluminum auto parts manufacturing, in China, aluminum alloy castings to form a large-scale production and meet the requirements of automotive lightweight to solve the problem is still a lot: First, the requirements of aluminum to the car Thin-walled, complex shape, high strength, high-quality 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 cost of production should be reduced from the point of view of design and process, such as the use of multiple molds and automation techniques to increase productivity, extend mold life, and reduce the number of parts with an integrated design. Third, the use of computer simulation technology to shorten the development process of the program cycle. Fourth, increase the recovery of aluminum. Recycled aluminum is the main raw material for aluminum casting. At the same time, China should pay attention to the utilization of recycled aluminum resources, develop the technology of effective separation of aluminum from composite materials and composite materials.

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