Optimization of 3D Printed Patterns for the Hybrid Investment Casting Technology

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F24%3APU155914" target="_blank" >RIV/00216305:26210/24:PU155914 - isvavai.cz</a>

Výsledek na webu

<a href="https://journals.pan.pl/dlibra/publication/151311/edition/133702/content/archives-of-foundry-engineering-2024-accepted-articles-optimization-of-3d-printed-patterns-for-the-hybrid-investment-casting-technology-br-stepan-r-orcid-0009-0002-6712-2320-krutis-" target="_blank" >https://journals.pan.pl/dlibra/publication/151311/edition/133702/content/archives-of-foundry-engineering-2024-accepted-articles-optimization-of-3d-printed-patterns-for-the-hybrid-investment-casting-technology-br-stepan-r-orcid-0009-0002-6712-2320-krutis-</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.24425/afe.2024.151311" target="_blank" >10.24425/afe.2024.151311</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Optimization of 3D Printed Patterns for the Hybrid Investment Casting Technology

Popis výsledku v původním jazyce

Currently, great emphasis is placed on the production of castings with complex shapes. The hybrid investment casting technology using 3D printed models offers new possibilities in the production of such complex and thin-walled castings. The motivation for this paper was to find a solution to the problem with ceramic shells cracking during the 3D model firing stage. The main factors affecting the shell cracking are the thermal expansion of the model and the shell material, and the newly considered pressure of the gas closed in the ceramic shell cavity. First, thermal analyses were performed of a commercial material used for 3D printing- Polymaker PolyCastTM. The characteristics yielded by the measurements helped establish the glass transition temperature, the autoignition temperature and the behaviour of the gas produced by the model burning. Suitable experimental models in the shape of tetrahedrons were designed and used for a number of experiments. The tests confirmed that cracks only occur during shock firing in models printed by the FFF technology with 0% of infill. A solution suggested for further experiments is purposeful venting of the models. Practical testing of the optimization has also been performed. The last step was measurement of the heat transfer through the ceramic shell after being placed in the annealing furnace. There were temperature evolution profiles in the system model-ceramic shell obtained.

Název v anglickém jazyce

Optimization of 3D Printed Patterns for the Hybrid Investment Casting Technology

Popis výsledku anglicky

Currently, great emphasis is placed on the production of castings with complex shapes. The hybrid investment casting technology using 3D printed models offers new possibilities in the production of such complex and thin-walled castings. The motivation for this paper was to find a solution to the problem with ceramic shells cracking during the 3D model firing stage. The main factors affecting the shell cracking are the thermal expansion of the model and the shell material, and the newly considered pressure of the gas closed in the ceramic shell cavity. First, thermal analyses were performed of a commercial material used for 3D printing- Polymaker PolyCastTM. The characteristics yielded by the measurements helped establish the glass transition temperature, the autoignition temperature and the behaviour of the gas produced by the model burning. Suitable experimental models in the shape of tetrahedrons were designed and used for a number of experiments. The tests confirmed that cracks only occur during shock firing in models printed by the FFF technology with 0% of infill. A solution suggested for further experiments is purposeful venting of the models. Practical testing of the optimization has also been performed. The last step was measurement of the heat transfer through the ceramic shell after being placed in the annealing furnace. There were temperature evolution profiles in the system model-ceramic shell obtained.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20500 - Materials engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Archives of Foundry Engineering

ISSN

1897-3310

e-ISSN

2299-2944

Svazek periodika

24

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

6

Strana od-do

63-68

Kód UT WoS článku

001382226200001

EID výsledku v databázi Scopus

2-s2.0-85216197450