TECHNOLOGY

2. Core making

Cores giving the interior holes in castings we make via hot- a cold core box processes, that is with a rasin-bound sand mixture solidificating at hot or room temperature. For castings made in smaller series we use wooden core boxes, for those in larger numbers we take core boxes out of plastic or metal.

Cores of a few kg-s being made in series we produce with core shooting machines, with the help of metal core boxes.

For bigger cores continuous mixers ensure the mould mixture. For cores made this way we use caring hand work and special ironing.