Refractory coatings give the necessary protection to the sand moulds and cores, so that the resulting castings are free of defects, calcinations, veinings, etc.
A suitable choice of coating can minimize the use of special sands (chromites sand, zirconium sand, etc.), optimizing the cost of the moulds or cores
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There are available a wide range of coatings is available, both on water and solvent basis, either for spray, brush, dipping, flow-coating application. Coatings for cold-box or shell cores, no-bake moulds, for every kind of castings: grey iron, nodular iron, steel and non ferrous castings. Moreover, coatings for particular applications are available: automotive industry, lost-foam process, rolls and centrifugal cylinders, developed according to ...
Reactive refractories coatings for cores and moulds
Foundriess are increasingly facing the problem of metal/mould reaction, which can cause defects in castings. Traditional coatings - even with high refractoriness - may not be sufficient to block and neutralize substances originating from the moulds a...
High refractoriness coatings for cores and moulds for replacing zirconium based coatings
The new series of coatings FOUNDRYLAC ZBF and HYDROLAC AL has been developed by the laboratory R&D F.lli Mazzon SpA, as requested by some customers looking for alternatives to zirconium-based coatings, which maintaining high refractoriness. &nbs...