Application of microwaves for innovative hardening of environment-friendly water-glass moulding sands used in manufacture of cast-steel castings

The paper presents examination results on possible implementing an innovative microwave technology for manufacture of high-quality, economic cores of water-glass moulding sands. A special attention was paid to improving technological properties of the examined moulding sands and in particular of their strength and knocking-out properties by selecting proper parameters of the hardening process. In addition, some benefits are indicated, resulting from applying such an innovative and environment-friendly solution effectively replacing traditional and energy-consuming processes of preparing moulding cores.