3D prinditud ABS-detailide atsetooniga järeltöötlemise mõju nende mehaanilistele omadustele
Laen...
Kuupäev
2022
Kättesaadav alates
08.09.2022
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Eesti Maaülikool
Abstrakt
Eelnevate lõputööde raames on konstrueeritud järeltöötluskamber ning on uuritud, kuidas
mõjutab atsetooniga järeltöötlemine 3D prinditud ABS detailide pinnaviimistlust ja täpsust.
Käesoleva töö eesmärgiks oli uurida atsetooniga järeltöötlemise mõju 3D prinditud ABS
detailide mehaanilistele omadustele. 3D printimiseks kasutati EMÜ Tehnikamaja mõõtelaboris
asuvat Ultimaker 3 printerit. Kokku 3D prinditi 20 katsekeha. Atsetooniga järeltöötlemine
toimus eelnevate lõputööde raames konstrueeritud seadmega. Järeltöötlemine toimus
samasugustel tingimustel, mis on toodud Hans Eduard Säre lõputöös. Järeltöötlusajad olid 5,
15, 30, 45 ja 60 minutit. Katsekehad järeltöödeldi partiidena, kus ühes partiis oli kolm
katsekeha. Tõmbekatsetega määrati järeltöödeldud ja järeltöötlemata katsekehade mehaanilised
omadused.
Tulemused näitasid, et atsetooniga järeltöötlemine vähendas ABS materjali tõmbetugevust ja
voolepiiri. Kõige enam vähenesid tõmbetugevus ja voolepiir katsekehadel, mille järeltöötlusaeg
oli 30 minutit. Pikenemine voolepiiril ja pikenemine purunemisel suurenesid
järeltöötlusaegadel 30, 45 ja 60 minutit. Atsetooniga järeltöötlemine suurendas 3D prinditud
ABS materjali elastsusmoodulit ja katkevenivust järeltöötlusaegadel 15 ja 30 minutit.
As part of the previous dissertations, a post-processing chamber was designed and the effect of acetone post-treatment on the surface finish and accuracy of 3D printed ABS parts was investigated. The aim of this study was to investigate the effect of acetone finishing on the mechanical properties of 3D printed ABS parts. The Ultimaker 3 printer in the EEC laboratory was used for 3D printing. A total of 20 specimens were printed. The post-treatment with acetone took place in a post-treatment plant designed as part of the previous final work. The post-processing took place under the same conditions as in Hans Eduard Säre's thesis. Finishing times were: 5, 15, 30, 45 and 60 minutes. The test pieces were post-processed in batches, one batch containing three test pieces. During the tensile tests, the mechanical properties of the post-treated as well as untreated test pieces were observed. The results show that properties such as tensile strength and yield strength decrease after treatment with acetone, regardless of time. The greatest decrease occurred in test specimens that were post-treated for 30 minutes. Indices such as fracture at break and elongation at break improved when the specimens were post-treated for 30, 45 and 60 minutes. The effect of acetone treatment on modulus of elasticity and elongation at break was most effective at 15 min and 30 min. The results show that the longer the test bed is post-processed, the greater the decrease in tensile strength and yield strength.
As part of the previous dissertations, a post-processing chamber was designed and the effect of acetone post-treatment on the surface finish and accuracy of 3D printed ABS parts was investigated. The aim of this study was to investigate the effect of acetone finishing on the mechanical properties of 3D printed ABS parts. The Ultimaker 3 printer in the EEC laboratory was used for 3D printing. A total of 20 specimens were printed. The post-treatment with acetone took place in a post-treatment plant designed as part of the previous final work. The post-processing took place under the same conditions as in Hans Eduard Säre's thesis. Finishing times were: 5, 15, 30, 45 and 60 minutes. The test pieces were post-processed in batches, one batch containing three test pieces. During the tensile tests, the mechanical properties of the post-treated as well as untreated test pieces were observed. The results show that properties such as tensile strength and yield strength decrease after treatment with acetone, regardless of time. The greatest decrease occurred in test specimens that were post-treated for 30 minutes. Indices such as fracture at break and elongation at break improved when the specimens were post-treated for 30, 45 and 60 minutes. The effect of acetone treatment on modulus of elasticity and elongation at break was most effective at 15 min and 30 min. The results show that the longer the test bed is post-processed, the greater the decrease in tensile strength and yield strength.
Kirjeldus
Bakalaureusetöö
Tehnika ja tehnoloogia õppekaval
Märksõnad
bakalaureusetööd, ABS, 3D-printimine, FDM, FFF, atsetoon