Die casting techniques are the manufacturing process in which liquid metal is injected into a mold cavity under high pressure.
This die casting techniques often use to produce small, thin-walled, precision parts from non-ferrous metals, such as those in the automotive and aerospace industries.
The die casting process involves using two mold halves (a movable mold and a fixed mold), injecting liquid metal into the mold through a hydraulic or pneumatic system. And then opening the mold to remove the casting after the metal cools and solidifies. There are two main types of die casting techniques: hot chamber die casting and cold chamber die casting.
1. Hot chamber die casting techniques
Hot chamber die casting mainly uses for low melting point metals such as zinc, tin, and lead, because these metals have low melting points and can be kept in the mold cavity.
In hot chamber die casting, molten metal is poured directly from a heated container into the mold cavity.
2. Cold chamber die casting techniques
Cold chamber die casting is suitable for high melting point alloys such as aluminum, magnesium, and copper. Because these metals have high melting points and need to be operated at lower temperatures to avoid damage to the mold.
In cold chamber die casting requires the transfer of molten metal from the furnace to the injection system.
3. key parameters
In addition, in order to improve the service life of the mold and the quality of the casting, the mold usually cools and heates by a water cooling or oil heating system.
The key parameters in the die casting process include injection speed, pressure, mold temperature, and molten metal temperature. Optimization of these parameters can significantly improve the surface quality and dimensional accuracy of castings and reduce the need for subsequent processing.
Haichen die casting machine
Haichen is one Chinese die casting machine manufacturer for more than 10years. We produce both high pressure cold chamber die casting machine and hot chamber die casting machine.They have durable and highly precise features. Haichen also produce die casting machine auxiliary equipment. Such as conveyor, vacuum machine, mold temperature controller, industrial robot, sprayer and so on.
Die casting techniques have two basic types: cold chamber die casting and hot chamber die casting, each type has its specific applications and advantages.
They have the advantages of high production efficiency, good dimensional accuracy, and high surface finish. But it also has problems such as high mold cost and limited applicable material range. Therefore, these techniques are mainly suitable for complex shape parts in large production quantities.
