All About The Overview Of Die Casting

By Author: Ryan
Total Articles: 8
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The metal die casting process forces molten metal into a mold. It results in dimensionally accurate precision metal parts that have a flawlessly smooth finish. For the mass production of products, it is the best choice as it can produce detailed parts. Die castings are made from non-ferrous metals such as lead, copper, aluminum, zinc, magnesium, pewter, and tin.


Hot or cold chambered are the two main methods of die casting even if it is aluminum die casting. The type of process that will be used will rely on the type of metal and the part.


The process of die casting gives you a broad range of shapes and components and is quite efficient and economical. Parts that are produced have a long life and can be visually appealing giving designers significant benefits.


Different Types of Metals Utilized in Die Casting


Which type of metal will be used in die casting will depend on its final use. For automobile and truck parts there is the use of aluminum because it is light in weight and corrosion resistance, whereas from stainless steel medical instruments are prepared.
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Advantages


The aluminum die casting part is quite cost-effective as to melt it takes very little energy. It is light in weight and corrosion-free. It accepts surface finishes also provides rust resistance with dimensional stability, strength at high temperatures, and conductivity as well as long-lasting and durability.


Hot Chamber


Hot chamber die casting makes use of alloys with a low melting temperature. There are two sections of dies– movable and fixed. The fixed half is referred to as a covered die and on a stationary platen aligned with the gooseneck, it is mounted which then ultimately connects to the chamber for inserting the molten metal. The movable die is said to be the ejector die.


In an open holding pot, molten metal is held which is then connected to the combustion area or furnace from which the molten metal enters the holding pot. With the help of a plunger, that drives the molten metal up the gooseneck into the mold, in the up position the molten metal flows into the shot chamber. Once the presence of metal is found, the plunger moves down which forces the molten metal up the gooseneck into the die.


Under great pressure, the two halves of the mold are forced together to close mold. Until the molten metal in the die cools the plunger remains down. An ejection system pushes the casting out from the two die halves after the completion of solidification.


Cold Chamber


A cold chamber signifies the temperature of the chamber when there is an introduction of molten metal. With the help of hot chamber casting, the chamber is filled with molten metal that too before beginning the casting process. In the cold chamber process, before the molten metal is poured the chamber remains at room temperature.


For cold chambered die casting there is the use of high melting temperature metal alloys. In a separate furnace, the molten metal is heated and with the help of a pouring hole, it is ladled or poured into the shot chamber that encloses a ram for pushing the molten metal into the die during aluminum die casting. With movable and fixed sections the parts of the die are the same. The molten metal is forced vertically by the cold chambered method forces.