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Browsing by Subject "green sand system"

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    Item type:Article, Access status: Open Access ,
    Analysis of selected technological properties of green sands with starch-based additives
    (2015) Drożyński, Dariusz; Kurleto, Żaneta; Kaczmarska, Karolina; Grabowska, Beata
    This paper presents the results of determining the effect of the addition of native starch and mineral-starch mixes on selected technological properties of sands. The study was carried out on the permeability, compressive strength, and wear resistance of molding. Green sand with bentonite and silica sand was compared to green sand with the addition of Superior Standard native starch or the addition of a mineral-starch composition in the form of binder Albertine F/1. The main difference in applied starch materials is the characteristic property of native starch which is insoluble in cold water. Therefore, it was difficult to bond water added to molding sand during mixing of the ingredients in this case. However, the Albertine F/1 starch-based binder is a mixture of starch and aluminosilicates, whereas the bonding of water added into molding sand during ingredient mixing is more efficient.