Industry

Porosity refers to small cavities or gas pockets inside or on the surface of a casting.

Porosity may negatively impact:

• Mechanical strength
• Air tightness
• Surface finish
• Machining performance

Low Pressure Die Casting (LPDC) uses controlled low-pressure gas to push molten metal upward into a metal mold cavity from a holding furnace.

It is widely used for aluminum wheels, engine components, and structural parts.

Gravity casting, also known as permanent mold casting, is a process in which molten metal is poured into a metal mold and filled under gravity to form the casting.

Compared with high-pressure die casting, gravity casting requires simpler equipment and moderate investment, making it suitable for medium-volume production.

During casting production, emissions mainly come from:

• Metal fumes during melting
• High-temperature volatilization during pouring
• VOC gases released from sand molds and resins
• Dust generated during grinding and finishing

Without proper treatment, these emissions can affect both the environment and worker health.

The casting cooling process refers to the entire stage in which molten metal solidifies inside the mold and gradually cools to room temperature.