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Statements

Subject Item
n2:RIV%2F61989100%3A27360%2F11%3A86081657%21RIV12-MSM-27360___
rdf:type
skos:Concept n16:Vysledek
dcterms:description
Nowadays, it is important that foundries casting production will prove minimum production costs with ensuring the highest possible quality. Primarily this is related to elimination of products defects. One of the main causes of defects is the thermal dilatation of the sands in the molding mixtures. Usually used quartz sands demonstrated discontinuous (no-flowing) thermal expansion which is related to dimensional inaccuracies due to changes in modification of SiO2. Dilatation coefficient reports the dimensional changes after heat exposure. The high values of this coefficient define the utilization of this material for the production of thin-walled and very accurate castings. Thermal expansion of molding mixture is determined by dilatometric method, which records linear changes during analysis time. The result of this measurement is the dilatometric curve. Purity, shape, angularity, grain size, bulk density and micro-dilatation of individual grains influence dilatometric values of sands, which also affect higher value of macro dilatation [1]. Nowadays, it is important that foundries casting production will prove minimum production costs with ensuring the highest possible quality. Primarily this is related to elimination of products defects. One of the main causes of defects is the thermal dilatation of the sands in the molding mixtures. Usually used quartz sands demonstrated discontinuous (no-flowing) thermal expansion which is related to dimensional inaccuracies due to changes in modification of SiO2. Dilatation coefficient reports the dimensional changes after heat exposure. The high values of this coefficient define the utilization of this material for the production of thin-walled and very accurate castings. Thermal expansion of molding mixture is determined by dilatometric method, which records linear changes during analysis time. The result of this measurement is the dilatometric curve. Purity, shape, angularity, grain size, bulk density and micro-dilatation of individual grains influence dilatometric values of sands, which also affect higher value of macro dilatation [1].
dcterms:title
Influence of thermal expansion in the utilization of hybrid sands Influence of thermal expansion in the utilization of hybrid sands
skos:prefLabel
Influence of thermal expansion in the utilization of hybrid sands Influence of thermal expansion in the utilization of hybrid sands
skos:notation
RIV/61989100:27360/11:86081657!RIV12-MSM-27360___
n16:predkladatel
n17:orjk%3A27360
n3:aktivita
n5:S
n3:aktivity
S
n3:dodaniDat
n11:2012
n3:domaciTvurceVysledku
n14:3816699
n3:druhVysledku
n9:D
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n8:predkladatel
n3:idSjednocenehoVysledku
204667
n3:idVysledku
RIV/61989100:27360/11:86081657
n3:jazykVysledku
n7:eng
n3:klicovaSlova
thermal expansion; dilatometry analysis; Silica sand
n3:klicoveSlovo
n15:dilatometry%20analysis n15:thermal%20expansion n15:Silica%20sand
n3:kontrolniKodProRIV
[7346BDD10EBF]
n3:mistoKonaniAkce
Ostrava
n3:mistoVydani
Ostrava
n3:nazevZdroje
Den interních doktorandů 2011 : sborník semináře Fakulty metalurgie a materiálového inženýrství : Vysoká škola báňská - Technická univerzita Ostrava, 6.12.2011
n3:obor
n12:JG
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
1
n3:rokUplatneniVysledku
n11:2011
n3:tvurceVysledku
Břuska, Marek
n3:typAkce
n21:CST
n3:zahajeniAkce
2011-12-06+01:00
s:numberOfPages
4
n6:hasPublisher
Vysoká škola báňská - Technická univerzita Ostrava, Fakulta metalurgie a materiálového inženýrství
n19:isbn
978-80-248-2523-6
n20:organizacniJednotka
27360