A CPP system is an automatic preparation unit of coatings for cores and moulds.
It is based on continuous measurement of density and automatic batch measurements of viscosity (using Ford cup or cup according to DIN 53211), assisted by optical sensors. Based on the measurements, the ratio of dense coating paste (from silos, drums or bulk storage tanks)
and solvent (water or alcohol) is managed in a preparation tank independently of operators.
By controlling the density of the coating, inconsistency of the layer thickness on cores and moulds can be minimized. The coating is being prepared inside a closed system that improves the surrounding working environment, but also reduces the consumption and maintenance.
The coating is continuously passing minimum one filter unit, allowing removal of sand, dried coating and broken pieces of cores from the system. Additional filter units can also be fitted. One single CPP system is often enough to supply multiple consumers (dipping tanks, robotic coating cells or flow coating/spraying stations).
Advantages of CPP
Consistency in coating layer thickness
Efficiency in drying process
Control the coating features with high precision
Density, Viscosity and temperature controls
Operator free (measurements are repeatable and independent by operator capabilities)
© 2018 Metafer Alloys