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Statements

Subject Item
n2:RIV%2F61989100%3A27230%2F03%3A00008196%21RIV13-MSM-27230___
rdf:type
skos:Concept n21:Vysledek
dcterms:description
The paper concerns evaluation of formability of strip from steel 11 305.21, which is used in Czech Republic for production of intricate deep stampings. The standardized properties of this steel are guaranteed 6 months after the date of production. With regard to the fact, that in finishing enterprises these sheets are sometimes stored even some months whereby their formability decreases as a rule, the evaluation of storage time influence upon formability of mentioned steel at normal temperature was carried out. The properties of strip were fully evaluated by tensile tests at test specimens machined parallel, perpendicular and diagonal to the rolling direction and by cupping tests according to Erichsen. The tests were carried out 2, 4, 6, 8, 10 and 12 months after the date of production. Nevertheless the solitary mechanical properties are not sufficient for correct choice of sheet-metal according to its formabiity, the planar anisotropy of mechanical properties, the directional and mean values of normal plastic anisotropy ratio and the strain-hardening exponents were evaluated. At strip from steel 11 305.21 owing to storage small modification of properties came about predominantly in direction to lower formability of sheet-metal. The paper concerns evaluation of formability of strip from steel 11 305.21, which is used in Czech Republic for production of intricate deep stampings. The standardized properties of this steel are guaranteed 6 months after the date of production. With regard to the fact, that in finishing enterprises these sheets are sometimes stored even some months whereby their formability decreases as a rule, the evaluation of storage time influence upon formability of mentioned steel at normal temperature was carried out. The properties of strip were fully evaluated by tensile tests at test specimens machined parallel, perpendicular and diagonal to the rolling direction and by cupping tests according to Erichsen. The tests were carried out 2, 4, 6, 8, 10 and 12 months after the date of production. Nevertheless the solitary mechanical properties are not sufficient for correct choice of sheet-metal according to its formabiity, the planar anisotropy of mechanical properties, the directional and mean values of normal plastic anisotropy ratio and the strain-hardening exponents were evaluated. At strip from steel 11 305.21 owing to storage small modification of properties came about predominantly in direction to lower formability of sheet-metal.
dcterms:title
Changes of properties of strip from steel 11305.21 during storage Changes of properties of strip from steel 11305.21 during storage
skos:prefLabel
Changes of properties of strip from steel 11305.21 during storage Changes of properties of strip from steel 11305.21 during storage
skos:notation
RIV/61989100:27230/03:00008196!RIV13-MSM-27230___
n4:aktivita
n6:Z
n4:aktivity
Z(MSM 272300010)
n4:dodaniDat
n8:2013
n4:domaciTvurceVysledku
n18:6120431
n4:druhVysledku
n11:D
n4:duvernostUdaju
n20:S
n4:entitaPredkladatele
n15:predkladatel
n4:idSjednocenehoVysledku
600863
n4:idVysledku
RIV/61989100:27230/03:00008196
n4:jazykVysledku
n9:eng
n4:klicovaSlova
mechanical properties; anisotropy; sheet-metal; formability
n4:klicoveSlovo
n12:sheet-metal n12:formability n12:anisotropy n12:mechanical%20properties
n4:kontrolniKodProRIV
[D48995BF09BC]
n4:mistoKonaniAkce
Ostrava
n4:mistoVydani
Ostrava
n4:nazevZdroje
Workshop 2003 Fakulty strojní : Ostrava, 11. února 2003
n4:obor
n17:JG
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
1
n4:rokUplatneniVysledku
n8:2003
n4:tvurceVysledku
Čada, Radek
n4:typAkce
n19:CST
n4:zahajeniAkce
2003-02-11+01:00
n4:zamer
n16:MSM%20272300010
s:numberOfPages
4
n5:hasPublisher
Vysoká škola báňská - Technická univerzita Ostrava
n10:isbn
80-248-0233-3
n14:organizacniJednotka
27230