Sand Casting

Sand casting of aluminium alloys

THERE ARE TWO TECHNOLOGICAL METHODS FOR GRAVITY CASTING

Capacity: 15 t

Manual casting 

(Suitable solution for smaller number of castings in order)
A mould must be created, serving as a temporary tool, imitating the final product and the casting is possible only 1 piece by 1.

The disadvantages of manual sand casting:

• time consuming process
• short lifetime of the mould

The advantages of manual sand casting:

• manual forming is suitable for castings of larger dimensions
• for higher weights
• for more complex castings in general

STROJNÍ FORMOVÁNÍ 

(Suitable solution for higher number of castings in order)

A mash plate must be created, serving as a casting tool. The desired shape of product is imprinted into the mash plate, usually in quantity of 2 – 8 pcs. The size of board is different. The complete mash plate is composed of upper plate, bottom plate and flow-system. The molten metal is poured into the complete mash plate. After the material has cooled and the products is formed inside, all parts are pulled out and may be further modified;

The disadvantages of mechanical sand casting:

• more expansive process

The advantages of mechanical sand casting:

• greater work productivity
• higher casting precision
• stable production conditions