Vertical moulding for green sand casting explained

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How does vertical moulding work?

Vertical moulding produces hard, accurate moulds at outstanding speeds. DISA introduced vertical moulding to the market with the DISAMATIC® in 1964. For decades, it has offered the lowest cost-per-casting for medium-to high-volume production.

Benefits of utilizing the vertical moulding process

DISAMATIC vertical moulding lines can achieve impressive moulding rates, reaching up to 555 moulds per hour without cores and up to 485 moulds per hour with cores.

Fast pattern-changing equipment makes vertical moulding flexible and economical for shorter series production at speeds down to 120 moulds per hour with cores. With DISA’s Automatic Pattern Changer (APC), changing pattern plates only halts the moulding line for one minute. Changes with the manually operated Quick Pattern Changer (QPC) can be as short as three minutes.

A simple and proven core-setting process makes creating hollow parts straightforward. DISAMATIC vertical machines are compact and offer a modern, safe working environment.

These are the six operations of the vertical moulding process:


The moulding chamber is filled with sand from above. One pattern plate is mounted on the pressure plate (left) and the other plate is mounted on the swing plate (right).	The pressure plate and the swing plate move towards each other to compress the sand and form the mould. The pattern plates create impressions on each side of the mould.	The swing plate moves out and then swings up, allowing the mould to be pushed out of the chamber.


The pressure plate extends further, gently pushing the new mould into contact with the line of previous moulds (“mould string”) which then moves one position closer to the pouring zone. Each new mould’s leading edge meets the previous mould’s trailing edge to create a cavity that will be filled with molten metal.	The pressure plate starts to return to its original position.	The swing plate returns to its original position, closing the chamber. Any cores required are inserted in the trailing edge of the new mould. The cycle begins again.