Sand & Binders

Metal casters continually strive to produce the highest quality castings at the lowest competitive cost. Unfortunately, they have little control of the cost of the required materials. Molding materials such as chromite, zircon and mullite all exhibit low expansion, leading to few casting defects related to expansion and better dimensional […]

Using Specialty Sand Blends to Reduce Veining Defects

There is a sand reclamation plant to suit every metalcasting facility requirement and budget. Chris Wilding, Omega Foundry Machinery Ltd., Peterborough, U.K. Today’s chemically-bonded sand metalcasting facilities are under increasing pressure to reduce costs and their impact on the environment while improving and maintaining casting quality. One of the ways […]

Sand Reclamation for Chemically Bonded Sand Systems

from Dipl.-Ing. Rudolf Wintgens, Schopfheim Overview For about 10 years we are expieriencing a renaissance of inorganic core sand binders due to environmental issues and the actual advantages in the foundry process. Modern inorganic binder systems have compared to conventional CO2 hardening systems a different hardness reaction. The Hardness reaction […]

Adapted machine technology for core production using inorganic binder