Die Cast History:
The mid-1800's saw the development and use of pressure-injected die casting, but the technology was limited for the first 20 years to the production of printer's type and the use of tin and lead. By the end of the 1800's other shapes and parts, like phonographs, began to be produced using alloys like zinc, aluminum and magnesium. These, as well as magnesium and copper, remain popular die casting metals today.
Types of Die Cast Methods:
There are two predominant methods of commercial die casting. The hot chamber and cold chamber methods both utilize injection systems, but in different ways. The hot system is used for metals with low melting points such zinc, copper and lead. The injection system itself is immersed in a bath of molten metal where it then fills with the liquefied metal. The cold chamber method is used for metals with higher melting points like aluminum. A manual or automatic ladle pours the molten metal into a cylindrical sleeve and is then sealed under pressure to cool.
Die Cast Advantages:
The die casting technique is more useful than other production methods because it creates durable, identical materials and parts in more shapes and types than what is capable by other manufacturing processes. The accuracy of the die casting process, as well as the strength and easy assembly of its finished products, makes it an efficient commercial manufacturing method that is valuable in a wide range of industries.
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