Multijetfusion Manufacturing Parameters for Watertightness, Strength and Tolerances

Abstract

The aim of this paper is to explore the watertightness behaviour for high pressure applications using Multijetfusion technology and polyamide 12 as a material. It reports an efficient solution for manufacturing functional prototypes and final parts for water pressure applications. It provides manufacturing rules to engineers in the pressurized product development process up to 10 MPa of nominal pressure. The research findings show manufacturers the possibility of using additive manufacturing as an alternative to traditional manufacturing. Water leakage was studied using different printing orientations and wall thickness for a range of pressure values. An industrial ball valve was printed and validated with the ISO 9393 standard also meeting tolerance requirements. This paper is a pioneering approach to the additive manufacturing of high performance fluid handling components. This approach solves the problem of leakage caused by porosity in additive manufacturing technologies. Keywords: keyword 1; keyword 2; keyword 3 (List three to ten pertinent keywords specific to the article; yet reasonably common within the subject discipline.) Preprints (www.preprints.org) | NOT PEER-REVIEWED |

Additive manufacturing of PA12 carbon nanotube composites with a novel laser polymer deposition process

“…Because of these properties and the favorable behavior in the LPBF laser sintering process, it is the most commonly used polymer in PBF processes with a market share of over 90% 13 . The high state of development of the PA‐12 powder based additive manufacturing processes (PBF, 14 Multijet modeling 15 ) gives access to parts with mechanical properties comparable to injection molded specimens. Tensile strengths and elastic moduli up to 90%–100% of injection molded specimens can be reached while elongations at break are at 1.5%–5% of injection molded specimens.…”