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A new ester hardener for moulding sands with water glass having slower activity

Major-Gabryś K., Dobosz S. M.

Archives of Foundry Engineering

2009

Vol. 9, iss. 4

125-128

The article takes into consideration the researches concerning inputting the new hardener to moulding sands with water glass, carried out in ester technology. Investigations are continuation of works connected to hardener based on carbonic acid's esters, that significantly upgrades the ability of these moulding sands to mechanical reclamation. Its' nuisance is short vitality. This is why, new investigations were taken to elaborate another hardener keeping the positive characteristics of the previous one and allowing the wider usage of technologies of loose self-hardened moulding sands with water glass.