Öntödei homokok granulometriai tulajdonságainak meghatározása képelemzéssel

Dargai, Viktória; Polzin, Hartmut; Varga, László; Dúl, Jenő

doi:10.26649/musci.2015.026

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2020

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“…In the case of sieve analysis, the source of error may be the clogging of the sieve holes, as well as the damage or rupture of the sieve mesh. During image analysis, the particles are measured in a random arrangement, which can cause differences in the results when measuring irregularly shaped particles [15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Archives of Foundry Engineering

Hudák,

Gyarmati,

Varga

2020

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Foundry sand is the main element of sand mixtures from which molds or sand cores are made. Due to the continuous development of coremaking technologies, the selection of the right type of base sand becomes more and more important. The major features of foundry sand are determined by the following factors: chemical and mineralogical composition, sand grain size, grain size distribution, sand grain shape, and surface quality. The main goal of our research was to develop a qualification method that can be used to predict the characteristics of sand cores made from different sand types. Samples made from different types of foundry sand were used during the research whose properties were examined with a new qualification system, and then its connection with the gas permeability of sand cores was analyzed.Based on the research results, a strong correlation could be established between the suggested quality indicators: CQi (Core Quality Index), CG (Coefficient of Granulometry), and permeability.

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Section: Introductionmentioning

confidence: 99%