Die casting parts: The steps involved in the process of die casting. During the die casting process, these are the basic steps that are being followed.
The first part involves spraying the mold with lubricant. This enhances the removal of the casting later on, and at the same time helps control the temperature of the die. The mold is then closed and then molten metal is introduced into the die under high pressures ranging from 1,500 to 25,000 psi. The die is then filled completely, and the pressure is constantly checked and maintained until the casting has securely solidified. The die is then opened, and the shot are then ejected by the use of ejector pins. Shots differ from castings since there are a number of multiple cavities within a die, producing multiple castings in one shot. Ultimately, the scraps are separated from the casting. Scraps include the gates, sprues, runners and flash. The scraps are usually removed by the use of a special trim die located inside a hydraulic or power press.
A more conventional method is employed by separating the scraps by sawing or by hand. This often requires grinding in order to smoothen out the scrap marks. Scraps that come off from this process are usually recycled by re-melting and are then used up again in another die casting process.
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