MODIFICATION OF THE NOZZLE ASSEMBLY IN A 3D PRINTER FOR PRINTING MATERIALS WITH HIGHER MELTING TEMPERATURES

Durna, A.; Fries, J.

Abstract:

This article deals with the modification of the nozzle and its entire assembly with a hot end, so that it was not necessary to use a tephlon insertion and it was possible to reach the maximum temperatures of the nozzle reaching 280°C and above. With the gradual development of 3D printing technology FDM (fused deposition modeling), i.e. the fritting of the thermoplastic in the shape of the fibres and putting it into the layers, more demands are placed on the materials used. Materials with a greater temperature of glass transition are more resistant to mechanical stress at a higher temperature. Commonly used materials have a temperature of melting, in accordance with the material used, ranging from 190°C to 250°C. Frequently used nozzles for 3D printers enable covering this temperature range, while this temperature is influenced by the tephlon insertion, which serves as insulation. At higher temperatures and during the long printing period, when the nozzle is gradually heated up thanks to its poor cooling, or thanks to its overall construction, there is the risk of melting the printing materials even in the cooler compartment, its gradual cooling and subsequent jams. This problem has then a decisive influence on the quality of the product. Thanks to such adjustments these 3D printers can produce good quality and more durable products, meeting the demands that are required in the case of simple components, e.g. for the aeronautical but also for the aerospace industry, where it is not possible to produce parts using any conventional technology.

SGEM Research areas:

• Space Technologies and Planetary Science

Year:

2017

Type of Publication:

In Proceedings

Keywords:

3D printing; nozzle; heating; hot end

Volume:

17

SGEM Book title:

17th International Multidisciplinary Scientific GeoConference SGEM 2017

Book number:

62

SGEM Series:

International Multidisciplinary Scientific GeoConference-SGEM

Pages:

923-930

Publisher address:

51 Alexander Malinov blvd, Sofia, 1712, Bulgaria

SGEM supporters:

Bulgarian Acad Sci; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Slovak Acad Sci; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; World Acad Sci; European Acad Sci, Arts & Letters; Ac

Period:

29 June - 5 July, 2017

ISBN:

978-619-7408-13-3

ISSN:

1314-2704

Conference:

17th International Multidisciplinary Scientific GeoConference SGEM 2017, 29 June - 5 July, 2017

DOI:

10.5593/sgem2017/62/S28.118