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WAAM system with interpass temperature control and forced cooling for near-net-shape printing of small metal components
ID Kozamernik, Nejc (Avtor), ID Bračun, Drago (Avtor), ID Klobčar, Damjan (Avtor)

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Izvleček
In an attempt to find a solution similar to the FDM 3D printers which would allow cost-effective and reliable additive manufacturing of metal components, this paper proposes a three-axis WAAM system capable of reliably printing small, near-net-shape metal objects. The system consists of gas metal arc (GMA) process equipment, a three-axis CNC positioning system, the interpass temperature control and forced cooling of the base plate and the deposit. The main challenge addressed is the minimisation of shape distortions caused by excessive heat accumulation when printing small objects. The interpass temperature control uses an IR pyrometer to remotely measure the last deposited layer and a control system to keep the interpass temperature below the predefined value by stopping the deposition after each layer in order to allow the deposit to cool. This results in a stable and more repeatable shape of the deposit, even when the heat transfer conditions are changing during the build-up process. The combination of adaptive interlayer dwell time and forced cooling significantly improves system productivity. Open-source NC control and path generation software is used, which enables fast and easy creation of the control code. Different control methods are evaluated through the printing of simple walls, and the printing accuracy is evaluated by printing small shell objects. As the results show, the interpass temperature control allows small objects to be printed at near-net shape with a deviation of 2%, which means that successful printing of 3D shapes can be achieved without trial and error approach.

Jezik:Angleški jezik
Ključne besede:wire arc additive manufacturing, interpass temperature control, small objects, near-net shape, forced cooling
Vrsta gradiva:Članek v reviji (dk_c)
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Leto izida:2020
Status objave pri reviji:Objavljeno
Verzija članka:Založnikova različica članka
Št. strani:Str. 1955-1968
Številčenje:Vol. 110, iss. 7/8
PID:20.500.12556/RUL-119388 Povezava se odpre v novem oknu
UDK:004.92:621.791(045)
ISSN pri članku:0268-3768
DOI:10.1007/s00170-020-05958-8 Povezava se odpre v novem oknu
COBISS.SI-ID:27509507 Povezava se odpre v novem oknu
Datum objave v RUL:08.09.2020
Število ogledov:529
Število prenosov:279
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
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Gradivo je del revije

Naslov:International journal of advanced manufacturing technology
Skrajšan naslov:Int. j. adv. manuf. technol.
Založnik:Springer
ISSN:0268-3768
COBISS.SI-ID:25636352 Povezava se odpre v novem oknu

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:3D oblikovno obločno navarjanje z žico, krmiljenje medvarkovne temperature, majhni objekti, izdelava blizu končne oblike, prisilno hlajenje

Projekti

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P2-0270
Naslov:Proizvodni sistemi, laserske tehnologije in spajanje materialov

Financer:Drugi - Drug financer ali več financerjev
Naslov:Materiali in tehnologije za nove aplikacije
Akronim:MARTINA

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:L2-8181
Naslov:Selektivna plazemska oksidacija zlitin FeCrAl za podaljšanje obratovalne dobe žarilnih svečk za dizelske motorje

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