- Tytuł:
- Influence green sand system by core sand additions
- Autorzy:
-
Špirutová, N.
Beňo, J.
Bednářová, V.
Kříž, J.
Kandrnál, M. - Powiązania:
- https://bibliotekanauki.pl/articles/382483.pdf
- Data publikacji:
- 2012
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
ochrona środowiska
innowacyjne technologie odlewnicze
innowacyjne materiały odlewnicze
masa formierska
spoiwo organiczne
environment protection
innovative foundry technologies
innovative foundry material
green sand system
organic binders
active bentonite - Opis:
- Today, about two thirds of iron alloys casting (especially for graphitizing alloys of iron) are produced into green sand systems with usually organically bonded cores. Separation of core sands from the green sand mixture is very difficult, after pouring. The core sand concentration increase due to circulation of green sand mixture in a closed circulation system. Furthermore in some foundries, core sands have been adding to green sand systems as a replacement for new sands. The goal of this contribution is: 'How the green sand systems are influenced by core sands?" This effect is considered by determination of selected technological properties and degree of green sand system re-bonding. From the studies, which have been published yet, there is not consistent opinion on influence of core sand dilution on green sand system properties. In order to simulation of the effect of core sands on the technological properties of green sands, there were applied the most common used technologies of cores production, which are based on bonding with phenolic resin. Core sand concentration added to green sand system, was up to 50%. Influence of core sand dilution on basic properties of green sand systems was determined by evaluation of basic industrial properties: moisture, green compression strength and splitting strength, wet tensile strength, mixture stability against staling and physical-chemistry properties (pH, conductivity, and loss of ignition). Ratio of active betonite by Methylene blue test was also determined.
- Źródło:
-
Archives of Foundry Engineering; 2012, 12, 1; 105-110
1897-3310
2299-2944 - Pojawia się w:
- Archives of Foundry Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł