How does the gravity casting process work?
Gravity die casting is one of the first metal and light alloy die casting processes invented. In this process, which can be fully automated, molten metal is poured directly from a ladle into semi-permanent or permanent molds.
The goal is to fill the mold with minimal turbulence through one or more channels to reduce oxidation and foaming. This minimizes porosity and inclusions, providing optimum metallic properties in the final casting.
Gravity die casting equipment can have a vertical or horizontal mold opening, or tilting technology with a 0/90° or 0/120° tilt offers an option. In tilt die casting, the metal flow at the die entrance is controlled by the tilt angle and speed of the die.
Advantages of Gravity Die Casting Process
One of the advantages of gravity die casting is that it produces dense, high-quality castings with excellent mechanical properties such as strength and stiffness. This makes it ideal for demanding automotive applications such as braking systems and suspension components.
Key advantages of gravity die casting technology include:
Suitable for high-volume, automated production
Minimum investment required for small to medium batch production
Produces parts with excellent mechanical properties, also suitable for heat treatment
Since the sand core can be placed inside the mold, gravity casting can also produce parts with complex shapes.
Gravity Die Casting Applications
Gravity die casting technology is very suitable for the production of various complex aluminum castings for automotive parts, such as: turbines, brake calipers, steering knuckles, engine cylinder heads, engine blocks and pistons. It is also suitable for many other industries, from lighting components to kitchen tools.