Introduction of Die Casting Mould

Diecast is the brief name of pressure die casting. It is a method of pouring liquid or semi-liquid metal at high pressure, filling cavity at high speed and solidifying rapidly under pressure. The mould used is called diecast mould.

The commonly used pressure is from several mpa to dozens of Mpa within the original filling speed of (0.5 ~ 70) m/s. Therefore, high pressure and high speed are important characteristics of die casting. 

There are several important roles of diecast mould in die casting process.

1. It decides the shape and dimensional precision of die casting parts.

2. The fixed gate system (especially the gate position) determines the filling status of molten metal.

3. It affects the quality of raw casting parts when taken out from the mould.

4. The established drainage system affects the filling conditions of molten metal.

5. It affects the operation efficiency.

6. The strength of the diecast mold limits the maximum extent of the pressure injection ratio.

7. It controls and adjusts the heat balance of the die casting process.

8. The quality of the forming surface of the pressure diecast mold affects both the casting quality and the paint spray cycle, which can influence the ease of taking out the die casting castings.

A good diecast mould is very important for die casting process, it is composed of two units. One is fixed mould, fixed on die mounting plate, has direct runner with nozzle or pressure chamber connection. The other part is moving diecast mould fixed on the mounting plate of the mould. With the moving of die mounting plate as opening and closing the diecast mould, the closed cavity and casting system is formed and then is filled with liquid metal under high pressure. When the die is opened, the moving mould is separated from the fixed mould, and the die casting part is pushed out by the launch mechanism on the moving mould.

To make sure good quality of die casting parts, firstly you need a set of diecast mould with high quality. Sieg-Huao has rich experience in casting part mould design and fabrication. Welcome to contact us if any interesting!