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2 Archives of Foundry Engineering

2 2012

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The influence of Glassex additive on properties of microwave-hardened and self-hardened moulding sands with water glass

Major-Gabryś K., Dobosz S. M., Jakubski J., Stachowicz M., Nowak D.

Archives of Foundry Engineering

2012

Vol. 12, iss. 1

130-134

The article takes into consideration the researches concerning inserting the Glassex additive to the microwaved-hardened and self-hardened moulding sands with water glass. In the research different types of ester hardeners to self-hardened moulding sands with water glass were used. The influence of Glassex additive on retained strength of moulding sands with different hardeners and prepared by different technologies of hardening were tested. The influence of different hardeners and the technology of hardening on retained strength of moulding sand with water glass and the Glassex additive were also estimated.

New look at the process of reclamation of moulding sands

Dobosz S. M., Major-Gabryś K., Hosadyna M.

Archives of Foundry Engineering

2012

Vol. 12, iss. 3

19-24

This paper presents a new perspective on the issue of reclamation of moulding and core sands. Taking as a premise that the reclamation process must remain on the surface of grains some not separated binding materials rests, it should be chosen the proper moulding sand's composition that will be least harmful for the reclaim quality. There are two different moulding and core sands taken into examinations. The researches prove that a small correction of their compositions (hardener type) improves the quality of the received reclaims. Carried out in this article studies have shown that such an approach to the problem of reclamation of the moulding and core sands is needed and reasonable.