SOLITECTM HI

FAST-DRYING WATER-BASED SOLITECTM HI
SERIES FOR LARGE-SCALE CASTING
Alcohol-based coatings are used in many large foundries.
They offer the advantage that the cores and molds dry
faster, and the solvent can be burned off. This means highproductivity and a degree of short-term flexibility. Theseadvantages are offset by a number of disadvantages,
such as the high cost of some raw materials (e.g.,zirconium, alcohol) and the need for protective measures andcompliance with occupational exposure limits.
Sufficient spacing in the finishing area is necessary forfire protection. There must also be defined work areas forcoating and flashing off. Compliance with the workplace
limit values for ethanol or isopropanol is also necessary.
The SOLITECTM HI series was specially developed for large-scale casting. Thanks to their special formulation, thewater-based coatings in the series dry quickly and thus
guarantee safe compliance with workplace limit values. In
addition, the formulations are zircon-free.

TECHNOLOGICAL ADVANTAGES▪

Water-based and zircon-free▪

A highly refractory solid matrix with sulfur-stopcharacteristic▪

Improved flow & brush properties▪

Reduced drying time (in air)▪

Obvious color change to indicate the drying
progress▪

Reduced casting defects and improved
surface finish

SOLITECTM HI

Figure 1: Color change comparison from wet (left) to dry(right) coating

Fast-drying SOLITECTM HI series
Switching from an alcohol-based coating to water offers
several advantages. SOLITECTM HI water coatings are
particularly suitable for flooding large and complex coresand molds and offer the shortest possible drying times.
SOLITECTM coatings with a wet-dry indicator are a new,innovative solution that indicates the degree of drying to theuser via a color change (Figure 1). This property prevents
the use of incompletely dried coating and promotes safety
in the production process.
Efficient formulations such as zircon-free or sulfur-stopcoatings, improve the castings’ surface quality, significantly
reducing the cleaning and post-processing effort.
Finally, the exchange of alcohol leads to a reduction in theVOC emissions and an improvement in the workplace limit
values.

SOLITECTM HI 704 offers another improvement over theprevious version: during dehydration, the color changes
from dark gray to light gray, making it easier to evaluate
the drying progress.
The drying time of this version is further reduced compared to the previous version, SOLITECTM HI 703, andincreases productivity by approx.14% (Figure 2).

YOUR SUSTAINABILITYPLUS
Cost-effectiveness▪ Cost reduction▪ Price stability due to the zirconium-freeformula▪ Often lower specific weight than zirconiumcontaining variant▪ Water-based products are cheaper thanequivalent alcohol-based products▪ Replacement of alcohol for dilution with
inexpensive water (drinking quality)▪

Figure 2: Drying curve in comparison under laboratory
conditions
The latest coating innovation, SOLITECTM HI 704
SOLITEC HI 704 is the latest, quick-drying and zircon-freebrush, flood, and spray coating for chemically bonded
cores and molds. The high-solids coating is more flexible
in terms of thermal and physical expansion behavior than azirconium coating. The graphite content creates a particularly easy separation between the sand and the casting.
The binder used in the formulation keeps the water on
the coating surface and prevents water migration into thesand’s interior, promoting rapid air drying.

Productivity increase▪ Avoidance of casting errors, less cleaningand post-processing effort▪ Fast-drying in air▪ Higher quality through improved microstructure in nodular graphite casting due tosulfur stop

Environment & social▪ Water-based formulation▪ Lower VOC emissions▪ Easy compliance with occupational exposurelimits▪ No radioactivity, as it is zircon-free