Original scientific paper

Influencing of foundry bentonite mixtures by binder activation

J. Beňo ; VSB-TU Ostrava, FMME, Ostrava, Czech Republic
P. Lichý ; VSB-TU Ostrava, FMME, Ostrava, Czech Republic
I. Kroupová ; VSB-TU Ostrava, FMME, Ostrava, Czech Republic
F. Radkovský ; VSB-TU Ostrava, FMME, Ostrava, Czech Republic

Abstract

Although new moulding processes for manufacture of high quality castings have been developed and introduced into foundry practice in recent years, the green-sand moulding in bentonite mixture still remains the most widely used technology. Higher utility properties of bentonite binders are achieved through their activation. This contribution is aimed at finding a suitable activating agent. A number of sodium salts and MgO based agents has been chosen. In the framework of the experiment the swelling volume of chosen agents was tested and technological parameters of a bentonite mixture with a binder activated with the studied agents were determined.

Keywords

foundry; bentonite; green sand; activation; swelling volume

Hrčak ID:

141821

URI

https://hrcak.srce.hr/141821

Publication date:

1.1.2016.

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