Page 49 - Glass Machinery Plants & Accessories no. 1/2018

Fig. B
insulation layers and melting
tank insulation.
All these parts are manu-
factured through the vibro-
cast technology that is one of
the key processes mastered by
Fusiontec.
The high quality level of
the refractories was achieved
through an accurate control of
every step of the process, start- check at any time the status of
ing from the raw materials, all
Fusiontec art GM1.indd 47
selected among the best and Dimensional accuracy
certified European producers, Dimensional accuracy is one
being the high purity and stabil- of the most important aspects of
ity of the chemical composition quality supply.
of the raw materials a basic For this reason, the supply
requirements for the quality of of a furnace bottom paving,
refractory blocks. forehearth glass contact chan-
nel blocks and super-structures,
Special care in design like those supplied to Vetri
and construction Speciali, have been scrupulously
For this project, special atten- pre-assembled and machined
tion and care was dedicated to the in order to obtain very strict
patterns design and construction, tolerances.
which is developed in-house by In fact, the automatic grind-
Fusiontec specialists. The design ing machines with numerical
was focused in forming a final control permit to achieve a high
piece, which has the best features dimensional precision so as to
and characteristics (density, poros- give the joints a narrow toler-
ity, etc.) depending on its working ance up to ±0,5 millimetres.
conditions during operation. The The quality control depart-
selection of the materials for the ment is focused on the dimen-
patterns is made in order to use sional check, density and poros-
those materials that transmit the ity control; for the certification
vibration in the most efficient way. of materials and non-routine
Process automation has checks Fusiontec is assisted by
played the most important role SSV (Stazione Sperimentale del
in achieving high levels of qual- Vetro) on the basis of a regular
ity of Fusiontec production, cooperation agreement.
mainly during the mixing and Thanks to the accurate
casting stages. control of the whole process
In order to assure a full pro- Fusiontec is able to produce
cess treacebility, after the cast- very large blocks (up to 2.3
ing phase, every piece was asso- tons, with overall main dimen-
ciated to a code number which sions of 1,800 x 1,800 millime-
follows the block during all the tres), including glass contact
process through a bar code. channels, with the advantage
Consequently, it is possible to reduce the number of joints,
to associate the complete his- that will greatly help to speed up
tory to the relevant refractory the installation process. �
block (batches of raw materials
which have been used, mixing
and cast process parameters, fir-
ing process temperatures, etc.)
and store it as computer data;
by input of the code number all
the block history can be recalled
at any time, if needed.
The automation is extended
to the firing process, and it is Fusiontec a
assisted by the continuous mon- Revimac company
itoring of the furnace param-
eters, which is achieved thanks Via Mario Carraro, 9/11
to the remote control so that 36075 Montecchio Maggiore (VI) - Italy
Tel.: +39-344-0468762
Fusiontec operators are able to E-mail: fusiontec@fusiontec.eu
www.fusiontec.eu
the firing process.
glass machinery plants & accessories 1/2018 47
08/01/18 11.10