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1 Archives of Foundry Engineering

1 2013

1 Zych J.

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Bench life (work time) of moulding and core sands with chemical binders – a new, ultrasound investigation method

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Zych J.

tom Vol. 13, iss. 4

117--122

The obtained results of the investigations of influences of the selected technological factors on the bench life (work time) of moulding and core sands with chemical binders are presented in the hereby paper. The bench life assessment is performed by the new, author’s method with the application of the ultrasound technique. This method was patented by the author. The influence of such factors as: matrix (surroundings) temperature, matrix water content, ratio of binding components hardener/binder (h/b) and the reclamation – on the bench life of furan moulding sands was determined. The empirical dependencies (regressions) were determined, which allowed forecasting the bench life (BL) of moulding sands as functions: BL = f(W%), BL = f(T) for the fresh and after the reclamation sands, BL = f(h/b). These dependencies should be treated as examples of the new method application for investigating the bench life of moulding sands with chemical binders.