EXACTCASTTM OPTIMA PLUS

CLEAN SURFACE AND PRECISE BREAKING
EDGE WITH INNOVATIVE
EXACTCASTTM OPTIMA PLUS
A common difficulty in using risers is proper placementin the mold and compaction. Mold breakages may occur
during compaction. In addition, small riser particles can
get into the mold, resulting in unclean casting surfaces.
Out-of-round or irregular riser necks can cause material tobreak unintentionally from the casting during knock-off.
EXACTCASTTM OPTIMA PluS offers a comprehensive
solution to these foundry challenges. The modular
OPTIMA system has been refined and expanded withfurther technical advantages.

TECHNOLOGICAL ADVANTAGES▪

Prevents the metal neck from falling back into theriser body▪

Increases mold stability▪ Stable riser neck mold edge▪

Clean and defined breaking edge
▪ Low friction pre-assembled metal neck▪

Easy application with rigid pins or spring pins▪

Variable riser volume▪

No casting defects due to riser particles in themold▪

Available fluorine-freeEXACTCASTTM OPTIMA PLUS

ForceRiser behavior during mold compaction
Original shape

Original shapeShape during
compaction

Shape duringcompaction

Shape after
compaction

Shape after
compaction

Figure 1: Comparison of the behavior of EXACTCASTTM OPTIMA standard tube and EXACTCASTTM OPTIMA PluS
during mold compaction
EXCACTCASTTM OPTIMA
EXACTCASTTM OPTIMA is a modular system withnumerous innovative components that can be flexibly
combined to create individual solutions.
With the OPTIMA mini riser family, efficiency and flexibility
can be increased. EXACTCASTTM OPTIMA enables the useof risers in the smallest possible space with maximum yield.
Thanks to their small contact surface, OPTIMA mini risersolutions can be easily arranged, even with complicatedcasting geometries. The integrated riser cover lid prevents
the detachment of particles during the compaction
process.

By better withstanding compaction forces, the metal neckprevents molding sand from breaking out below the riser.
Thanks to the special metal neck shape, the risers
achieve a precisely defined breaking edge. This clean
breaking edge minimizes the risk of errors duringknocking off, thus reducing fettling, scrap and production
costs.
Another advantage is increased safety when handling therisers due to fewer sharp edges.

Innovative components from OPTIMA are the exothermic
or insulating riser cover lids with a rigid pin guide made ofplastic that does not crumble when penetrating. They help
to avoid contamination in the mold and associated casting
defects, and to shorten the cycle times of molding plants.
The reinforced riser cover lid with integrated rib structurewithstands high pressure in the mold.

YOUR SUSTAINABILITYPLUS

For users who want to reduce landfill costs and avoid
fluorine-related casting defects, a fluorine-free OPTIMA
variant is recommended. Foundries that prefer an inorganic
feeding solution can also obtain all compounds andvariants from ASK Chemicals as water glass-bondedvariants.
EXCACTCASTTM OPTIMA PluS
The latest development of the EXACTCASTTM OPTIMA PluS
metal neck expands the portfolio of Optima risers. The
specially shaped metal neck avoids deformation of the riser
neck during the compaction process of the mold (Figure 1).

Profitability▪ Less cleaning effort thanks to cleaner
surfaces▪

Increased efficiency due to no risk of mold sandbreaking during compaction

Environment & Social▪ Increased worker safety▪ Less risk of injury due to nosharp edges▪

Available in fluorine-free formulation