cast aluminum block

The cast aluminum block is filled with molten metal to obtain the aluminum alloy of various shapes of parts. It has the advantages of low density, high specific strength, good corrosion resistance and casting processability, and less restricted by the structural design of parts. It is divided into Al-Si and Al-Si-Mg-Cu-based medium-strength alloys; Al-Cu-based high-strength alloys; Al-Mg-based corrosion-resistant alloys; Al-Re-based thermal strength alloys. Most of them require heat treatment to strengthen the alloy, eliminate the internal stress of the casting, stabilize the structure and the size of the parts.
 
The casting process is adopted to directly obtain the cast aluminum block used for the required parts. It is required to have ideal castability: good fluidity, small shrinkage, hot cracking and cold cracking tendency, small segregation and gas absorption. The element content of cast aluminum alloy is generally higher than that of corresponding deformed aluminum alloy, and most alloys are close to eutectic composition.
From 1905 to 1925, European and American countries carried out research on industrial aluminum alloy based on the phase diagram of aluminum alloy. The aluminum-nickel alloy was initially studied, but its casting performance was poor, so nickel failed to become the main strengthening element. Later, he studied the addition of copper, magnesium, manganese, silicon and other elements to aluminum, and obtained relatively ideal properties. Therefore, some binary and multi-element cast aluminum alloys were developed. Among them, the famous silicon aluminum alloy was used around 1920. In industry.
 
cast aluminum block has good casting performance and can be made into parts with complex shapes; it does not require huge additional equipment; it has the advantages of saving metal, reducing costs, and reducing man-hours, and is widely used in the aviation and civil industries. cast aluminum block are used to manufacture beams, gas turbine blades, pump bodies, pylons, hubs, intake lip and engine casings. It is also used in the manufacture of automobile cylinder heads, gearboxes and pistons, instrument housings and turbocharger pump bodies.