Die Casting Part
Die casting is a specialized casting method in modern metal processing technology that utilizes three main elements: machinery, molds, and alloys.
It involves a unified process of pressure, speed, and time. It is a non-cutting method of casting that has developed rapidly in recent times.
This method involves filling the mold cavity with molten metal under high pressure and speed, and the metal solidifies and crystallizes into the desired shape under high pressure.
Die casting equipment converts electrical energy from a motor into hydraulic energy through a pump, enabling actions such as opening and closing molds and injecting molten metal into the mold cavity.
Advantages of die casting:
- High productivity, easy mechanization, and automation, capable of producing complex thin-walled castings.
High dimensional accuracy of castings with small surface roughness values.
Dimensional tolerances of die castings can reach CT3 to CT6, with surface roughness typically ranging from Ra 0.8 to 3.2μm.
Embedded parts can be cast within die castings, saving valuable materials and machining time, and eliminating assembly processes, thereby simplifying manufacturing processes.
Disadvantages of die casting:
High filling speed during die casting makes it difficult to completely eliminate gas from the mold cavity, leading to defects such as porosity, cracks, and oxidation.
Die castings typically cannot undergo heat treatment.
- Complex structure and long manufacturing cycles of die casting molds lead to high costs, making it unsuitable for small-batch production of castings.
- High cost and large investment of die casting machines, limited by the locking force and mold size, making them unsuitable for producing large die castings.
- Limited range of alloy types, primarily non-ferrous alloys such as zinc, magnesium, and copper.
