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Die Casting Rapid Development In The Process
May 19, 2017

Automatic production is the only way for the development of die casting industry. With the rapid development of die-casting industry, labor costs continue to improve, Die Casting die-casting plant on the production efficiency and stability requirements more and more high, die-casting automation production is therefore rapidly popularized and promoted. For the die-casting host to provide ancillary equipment automation peripheral equipment Die Casting manufacturers, means that the rapid development of the industry has arrived.

Pressure casting is a kind of special casting method which has been developed rapidly in modern metal processing. It is the process of filling the molten metal at high pressure Die Casting and high speed and forming the castings under high pressure. High-pressure high speed is the main feature of pressure casting. The commonly used pressure is 10 MPa, filling speed (inside gate speed) is about 16 80 m/s, the metal liquid fills the mold cavity the time is extremely short, approximately is the 0.01 second. Because the production of products Die Casting with high efficiency, simple process, high tolerance grade castings, good surface roughness, mechanical strength, can save a large number of machining processes and equipment, saving raw materials and other advantages, Die Casting so now has become an important part of China's foundry industry.

II. Main parameters in die casting process

Pressure plays a leading role in the process of pressure casting. The molten metal not only fills the pouring system with pressure, but also solidifies under pressure. Die Casting In each stage of the injection process, with the movement of the head position, Die Casting the pressure also varies, which will have a significant impact on the quality of the castings. Therefore, we should have a perceptual knowledge of the effect and change of pressure in the process of die casting, which is also the theoretical basis of die-casting technology.

III. Die Casting Process

Die casting process is the process of combining the three main elements of die casting machine, diecasting die and alloy. And die-casting metal according to the process of filling cavity, is the pressure, speed, temperature and time process factors such as the process. Die Casting At the same time, these process factors interact with each other, restricting each other and complementing each other. The desired results can be achieved only if these factors are properly selected and adjusted to harmonize them. Therefore, Die Casting in the process of die casting not only to pay attention to the casting structure of the process, die-casting die, the performance and structure of good, die-casting alloy selection of adaptability and smelting process of standardization, but also pay attention to the pressure, temperature and time, and other technological parameters on the importance of casting quality. The effective control of these parameters should be emphasized in the process of die casting.

(a) pressure

The existence of pressure is the main feature of the casting process to distinguish other casting methods.

1. Press Force

The press force is the force that pushes the piston movement in the press mechanism of the die casting machine. It is a main parameter that reflects the function of die casting machine.

The size of the press force is determined by the cross-sectional area of the cylinder and the pressure of the working fluid.

2. Casting pressure (pressurization pressure)

The pressure on the unit Die Casting area of the molten metal in the chamber is called the compression. The proportional pressure is also the result of the ratio between the pressure and the sectional area of the pressure chamber.

Casting pressure is the main factor to obtain the density and contour of castings, and it is also the main feature of Die casting which differs from other casting methods. The size depends on the structure and power of the die-casting machine.