| | SLO | ENG | Cookies and privacy

Bigger font | Smaller font

Show document Help

Title:Vpliv parametrov procesa brizganja na zaostale napetosti in nastanek razpok pri več-komponentnih prozornih izdelkih iz pmma : diplomsko delo
Authors:ID Jernejšek, Katja (Author)
ID Drstvenšek, Igor (Mentor) More about this mentor... New window
Files:.pdf UN_Jernejsek_Katja_2022.pdf (3,20 MB)
MD5: 0E9E35D592822803DDA5279D1555BC79
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FS - Faculty of Mechanical Engineering
Abstract:Pokrove za zadnje avtomobilske luči izdelamo z brizganjem plastičnih mas. Kakovost izdelkov nadzorujemo in zagotavljamo s spreminjanjem procesnih parametrov. Velik vpliv na spreminjanje kakovosti izdelkov med uporabo imajo zaostale napetosti, ki se pojavijo med njihovim ohlajanjem. Pomembno je, da visoke zaostale napetosti na izdelkih pravočasno odkrijemo, sicer se lahko zaradi njih, v času uporabe izdelka, na izdelkih pojavijo razpoke. Pri izvedbi eksperimenta nas je zanimalo, kako se s spreminjanjem procesnih parametrov spreminja nastanek razpok na izdelkih. Pokrove smo izpostavili tekočemu etanolu in pregledovali nastale razpoke. Nastanek razpok na pokrovih smo preprečili z brizganjem pri nižjem naknadnem tlaku in krajšem času delovanja naknadnega tlaka.
Keywords:PMMA, plastične mase, brizganje plastičnih mas, zaostale napetosti, nastanek razpok
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[K. Jernejšek]
Year of publishing:2022
Number of pages:1 spletni vir (1 datoteka PDF (XI, 48 f., [3] f. pril.))
PID:20.500.12556/DKUM-83054 New window
UDC:678.027.74.01(043.2)
COBISS.SI-ID:190160131 New window
Publication date in DKUM:05.03.2024
Views:318
Downloads:4
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FS
:
JERNEJŠEK, Katja, 2022, Vpliv parametrov procesa brizganja na zaostale napetosti in nastanek razpok pri več-komponentnih prozornih izdelkih iz pmma : diplomsko delo [online]. Bachelor’s thesis. Maribor : K. Jernejšek. [Accessed 21 January 2025]. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=83054
Copy citation
  
Average score:
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
(0 votes)
Your score:Voting is allowed only for logged in users.
Share:Bookmark and Share


Similar works from our repository:

No similar works found

Similar works from other repositories:

No similar works found

Hover the mouse pointer over a document title to show the abstract or click on the title to get all document metadata.

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:14.09.2022

Secondary language

Language:English
Title:Influence of injection molding process parameters on residual stresses and crack formation in transparent multicomponent pmma products
Abstract:The tail light covers for cars are injection molded from plastic. We control and ensure the product quality by changing the process parameters. Residual stresses that occur during cooling have a great impact on the quality of the products in use. It is important to detect excessive residual stresses on the products in time, otherwise cracks may appear on the product during use. In conducting the experiment, we were interested in how the cracking of the products changes when the process parameters are changed. The taillight covers were exposed to ethanol, and the resulting cracks were studied. Cracking of the covers was prevented by injection molding with a lower holding pressure and a shorter holding pressure time.
Keywords:PMMA, plastics, injection molding, residual stresses, crack formation


Comments

Leave comment

You must log in to leave a comment.

Comments (0)
0 - 0 / 0
 
There are no comments!

Back
Logos of partners University of Maribor University of Ljubljana University of Primorska University of Nova Gorica