Analysis of Favorable Process Conditions for the Manufacturing of Thin-Wall Pieces of Mild Steel Obtained by Wire and Arc Additive Manufacturing (WAAM).
作者： José Prado-Cerqueira , Ana Camacho , José Diéguez , Álvaro Rodríguez-Prieto , Ana Aragón
DOI: 10.3390/MA11081449
关键词:
摘要: One of the challenges in additive manufacturing (AM) metallic materials is to obtain workpieces free defects with excellent physical, mechanical, and metallurgical properties. In wire arc (WAAM) influences process conditions on thermal history, microstructure resultant mechanical surface properties parts must be analyzed. this work, 3D mild steel (American Welding Society-AWS ER70S-6) are built a WAAM by depositing layers material substrate S235 JR sheet 3 mm thickness under different conditions, using as welding gas metal (GMAW) cold transfer (CMT) technology, combined positioning system such computer numerical controlled (CNC) milling machine. Considering hardness profiles, estimated ultimate tensile strengths (UTS) derived from measurements findings, it can concluded that most favorable ones provided CMT, homogeneous good accordance defined standard, without formation decohesionated external layer; CMT Continuous optimal option better than single CMT.
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