23 Aug How is die casting produced?
As you know, die casting is a manufacturing process that gives pressure on melted material to flow on the die casting mold, so as to obtain desired geometry. The die casting process involves the use of a furnace, metal, die casting machine, and die casting mold. The metal, we normally use aluminum or zinc, is melted in the furnace and then injected into the dies in the die casting machine. Molten metal is injected into the die cavity where it solidifies quickly. The die halves are drawn apart and the casting is ejected. Die casting dies can be simple or complex, having moveable slides, cores, or other sections depending on the complexity of the casting.
Talking about the die casting process, at present, it’s very common to see hot chamber machines that are used primarily for zinc, copper, magnesium, lead and other low melting point alloys that do not readily attack and erode metal pods, cylinders and plungers. Cold chamber machines are used for alloys such as aluminum and other alloys with high melting points. The molten metal is poured into a “cold chamber”, or cylindrical sleeve, manually by a hand ladle or by an automatic ladle. A hydraulically operated plunger seals the cold chamber port and forces metal into the locked die at high pressures.
A complete die casting cycle can vary from less than one second for small components weighing less than an ounce, to two-to-three minutes for a casting of several pounds, making die casting the fastest technique available for producing precise non-ferrous metal parts.
On the other hand, there are several variations on the basic process that can be used to produce casting for specific applications. One of which is squeeze casting. Squeeze casting is a method by which molten alloy is cast without turbulence and gas entrapment at high pressure to yield high quality, dense, heat treatable components.
The above mentioned is what we know about the die casting process, and please let us know if you have any query or die casting project to run.