HIGH-PRESSURE DIE CASTS GATING SYSTEM NUMERICAL DESIGN METHODOLOGY ASSESSMENT WITH REGARD TO HYDRODYNAMIC CONDITIONS IN THE MELT FLOW

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F75081431%3A_____%2F25%3A00002802" target="_blank" >RIV/75081431:_____/25:00002802 - isvavai.cz</a>

Výsledek na webu

<a href="https://www-mmscience-eu.ezproxy.techlib.cz/journal/issues/march-2025/articles/high-pressure-die-casts-gating-system-numerical-design-methodology-assessment-with-regard-to-hydrodynamic-conditions-in-the-melt-flow" target="_blank" >https://www-mmscience-eu.ezproxy.techlib.cz/journal/issues/march-2025/articles/high-pressure-die-casts-gating-system-numerical-design-methodology-assessment-with-regard-to-hydrodynamic-conditions-in-the-melt-flow</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

HIGH-PRESSURE DIE CASTS GATING SYSTEM NUMERICAL DESIGN METHODOLOGY ASSESSMENT WITH REGARD TO HYDRODYNAMIC CONDITIONS IN THE MELT FLOW

Popis výsledku v původním jazyce

High-pressure die casts exhibit a certain amount of porosity, which can reduce their mechanical properties. One of the options for maintaining the porosity of casts at a low value is the correct gat-ing system design. Presented contribution is based on the conclusions of the “Methodology assess-ment of the gating system numerical design of high pressure die casting with regard to the material applicability” contribution. Individual numerical design methods gave different dimensions and cross-sections for the gating channels. Based on the assumption of a Reynolds number Re modifica-tion when altering the hydraulic cross-sections of the gating channels, it is possible to conclude that the nature of the melt flow in the channels is also shifting. The presented contribution aims to analyt-ically determine the hydrodynamic conditions in the melt with different designs of the gating sys-tems, determine the filling mode of the mold cavity and subsequently, using a simulation program, to determine the share of gas entrapment in the casts volume. At the end of the contribution, assump-tions are deduced about the mechanism of gas entrapment in the casts volume.

Název v anglickém jazyce

HIGH-PRESSURE DIE CASTS GATING SYSTEM NUMERICAL DESIGN METHODOLOGY ASSESSMENT WITH REGARD TO HYDRODYNAMIC CONDITIONS IN THE MELT FLOW

Popis výsledku anglicky

High-pressure die casts exhibit a certain amount of porosity, which can reduce their mechanical properties. One of the options for maintaining the porosity of casts at a low value is the correct gat-ing system design. Presented contribution is based on the conclusions of the “Methodology assess-ment of the gating system numerical design of high pressure die casting with regard to the material applicability” contribution. Individual numerical design methods gave different dimensions and cross-sections for the gating channels. Based on the assumption of a Reynolds number Re modifica-tion when altering the hydraulic cross-sections of the gating channels, it is possible to conclude that the nature of the melt flow in the channels is also shifting. The presented contribution aims to analyt-ically determine the hydrodynamic conditions in the melt with different designs of the gating sys-tems, determine the filling mode of the mold cavity and subsequently, using a simulation program, to determine the share of gas entrapment in the casts volume. At the end of the contribution, assump-tions are deduced about the mechanism of gas entrapment in the casts volume.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20301 - Mechanical engineering

Projekt

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Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

MM SCIENCE JOURNAL

ISSN

1803-1269

e-ISSN

1805-0476

Svazek periodika

2025

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

11

Strana od-do

8136-8146

Kód UT WoS článku

001435395900001

EID výsledku v databázi Scopus

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