sand casting vs die casting what is the difference between cast aluminum & die cast ...

by:Hanway     2019-08-16
Casting metal is to shape the metal by melting the metal and then pouring it into the mold.When the metal cools and sets, it takes the shape of the surrounding mold and can be taken out once it is completely cooled.When they want to produce aluminum casting products, manufacturers can choose between several methods.One of them is called die casting.
Casting is a broad term that describes a variety of different methods;Die Casting is just one of them, although it is one of the three most popular products in terms of aluminum.The other two important methods are permanent casting and sand casting.Although die casting has a high precision and a very consistent shape, sand casting is more versatile and superior for patterns and complex objects.
In die casting, the manufacturer melts the aluminum and then forces it into the steel mold under high pressure.The mold is called the mold, made of Alloy Tool Steel, divided into two or more parts.One of the parts is called the cover part and remains fixed;In contrast, once the aluminum is solidified, the top half is removed, and the final product is topped out at this time.The steel mold quickly takes the heat away from the aluminum, so the cooling process is very fast.
Sand casting uses molds made of sand and clay to close the aluminum when it cools.Sand is a bad conductor of heat, so the cooling process is very slow.The mold can be consumed.In permanent casting, by contrast, the mold is made of steel or other metals and is intended to be reused.The main difference from die casting is that the metal is just poured into the mold, not injected, although sometimes a vacuum is applied.
Each technology has its advantages.Die casting can be automated, so it is more suitable for mass production, although the initial expenditure of the equipment will usually be larger.Sand casting is more economical for products with smaller volume, larger volume or more complex.Permanent mold casting can provide a stronger and more durable finished product.Many aluminum objects, such as car parts or cookware, are made through one of these processes, and manufacturers often choose the method that best suits the type of object to reduce costs.
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