Analysis of the Wall Geometry with Different Strategies for High Deposition Wire Arc Additive Manufacturing of Mild Steel

Metals

Jon Bilbao¹  Aitzol Lamikiz²  Fernando Veiga³  Eider Aldalur³  Alfredo Suárez³ 

[1] ADDILAN Fabricación Aditiva S.L., Eguzkitza 1, 48200 Durango, Spain;Department of Mechanical Engineering, University of the Basque Country (UPV/EHU), E48013 Bilbao, Spain;TECNALIA, Basque Research and Technology Alliance (BRTA), Parque Científico y Tecnológico de Gipuzkoa, E20009 Donostia-San Sebastián, Spain;

关键词: additive Manufacturing;    WAAM;    GMAW;    high deposition rate;    mild steel;    low carbon steel;   

DOI  :  10.3390/met10070892

来源: DOAJ

【 摘 要 】

Additive manufacturing has gained relevance in recent decades as an alternative to the manufacture of metal parts. Among the additive technologies, those that are classified as Directed Energy Deposition (DED) are characterized by their high deposition rate, noticeably, Wire Arc Additive Manufacturing (WAAM). However, having the inability to produce parts with acceptable final surface quality and high geometric precision is to be considered an important disadvantage in this process. In this paper, different torch trajectory strategies (oscillatory motion and overlap) in the fabrication of low carbon steel walls will be compared using Gas Metal Arc Welding (GMAW)-based WAAM technology. The comparison is done with a study of the mechanical and microstructural characteristics of the produced walls and finally, addressing the productivity obtained utilizing each strategy. The oscillation strategy shows better results, regarding the utilization rate of deposited material and the flatness of the upper surface, this being advantageous for subsequent machining steps.

【 授权许可】

Unknown