Casting is a procedure for forming metals. Metal casting is needed to come up with a specified size, shape and thickness of the materials molded. These materials may include aluminum, iron, bronze, steel, brass, magnesium alloys.
Casting procedure is used when melted fluid is placed into mold and allowed them to cool in a specified shape as of the mold. Patterns, molds, cores and part are the major elements are the casting process. With the pattern used, a hallow space is created in the materials casted. The cores are essential for producing tunnels or for the purpose of creating holes in the final and finished products.
Casting is used in making aluminum, steel and copper parts. Besides, with casting finished products turned out to be quality products. Casting is very important in metal manufacturing industries for the purpose of making quality and efficient products.
Although there are four types of casting, the two most famous methods are permanent mold casting and die casting.
Permanent Mold Casting
In a permanent mold casting there are two molds used and these molds are joined together in which metals are molted when poured in these molds. Aluminum, lead, tin and zinc are the normal metals that are made for permanent mold casting. The molded materials are separated once the hot metals are cool. There are some products that can be removed either by hand or flash grind because these products have metal extrusion.
Permanent mold casting consists of non ferrous metals. In order to achieve a mold of five to fifty pieces in an hour, permanent mold casting must be set up for some weeks. Acetylene soot is coated and thereafter it is made applicable to steel cavities. This is for the purpose of promoting long life for tools. Besides, refinishing or replacement is so easy once the molds appear not be good.
Die casting is the process used to mold metals under high or even low pressure. In the past, die casting is done under low pressure. But this is no longer true in the recent times since die casting is already made under high pressure in order to give design to complex products as well as making these products more accurate and with smooth finishing. Since steel is considered to be with a higher melting point, die casting can be used times. The casting may differ depending on the desired results. If the desired result is a single component then casting can be made in a single cavity. But if the desired results involve multiple parts at one time then casting can be in a multiple cavity. Unit die is also available if the manufacturer desires to produce different parts. Combination die can be used if different parts are to be produced in one setting. The metals that can be used for die casting are aluminum, zinc, magnesium, and copper, lead, tin and pewter based alloys.
Using die casting process, metals appear to be pore free and strong because the machines used can either be hot chamber or cold chamber die casting machines.