Aluminum alloy casting is to fill the mold with molten metal to obtain various shapes of aluminum alloy parts. Aluminum alloy casting has the advantages of low density, high specific strength, good corrosion resistance and casting technology, and limited by the structural design of parts. It is divided into medium strength alloy based on aluminum silicon and aluminum silicon magnesium copper; aluminum copper base high strength alloy; aluminum magnesium base corrosion resistant alloy: Aluminum rare earth base heat strength alloy. Most of them need heat treatment to strengthen the alloy, eliminate the internal stress of the casting, and stabilize the structure and size of the parts. Aluminum alloy casting can be used to manufacture crossbeam, turbine blade, pump body, hanger, hub, air inlet, engine shell, etc. It is also used to manufacture automobile cylinder head, gearbox, piston, instrument shell, supercharger pump body and other parts.
Aluminum alloy has good casting properties and can be used to manufacture parts with complex shapes. Aluminum alloy casting is widely used in aviation industry and civil industry because of its advantages of saving metal, reducing cost and working hours. It is used to manufacture crossbeam, turbine blade, pump body, hanger, hub, air inlet, engine shell, etc. It is also used to manufacture automobile cylinder head, gearbox, piston, instrument shell, supercharger pump body and other parts.
In the process of casting, aluminum alloy will produce coarse grain structure. Compared with forging and rolling materials, it needs a long time of solution treatment and practical effect. Because the melting temperature is close to the melting point of eutectic with low melting point, a heating furnace with convenient temperature control and a standard temperature control instrument are needed. The chemical composition of aluminum in aluminum alloy casting is different. Different alloys have different heat treatment characteristics and different strengthening phases. Aluminum alloy castings have been widely used in some casting production in all walks of life. Its production efficiency is high, casting quality is good, and it is convenient for mechanized production. In order to ensure that aluminum alloy castings can better meet the needs of use, there are certain requirements.
Aluminum alloy casting can ensure the correctness of pouring system and riser, and ensure that the casting process meets the corresponding requirements. It can also ensure that the appearance, size and quality of castings meet the technical requirements. The aluminum alloy casting has good exhaust performance, and the metal mold should be easy to take out, maintain and install. The aluminum alloy casting has the advantages of simple structure, convenient processing and manufacturing, low cost, convenient mechanization and automation, improved production efficiency and improved working conditions. When used, it can guarantee the working temperature for a long time without warping.
Aluminum alloy castings have many advantages that other castings can't compare, such as beautiful appearance, light weight, corrosion resistance, etc. Especially since automobile lightweight, cast aluminum alloy castings have been widely used in automobile industry. Aluminum alloy has good surface luster and corrosion resistance in atmosphere and fresh water, so it is widely used in the manufacture of civil utensils. Pure aluminum has good corrosion resistance in acid oxidizing medium such as nitric acid and acetic acid, so aluminum alloy casting has certain application in chemical industry. Pure aluminum and aluminum alloy have good thermal conductivity. The heat exchange device used in chemical production and parts requiring good thermal conductivity in power machinery, such as cylinder head and piston of internal combustion engine, are also suitable for aluminum alloy manufacturing.