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基于尺寸和三维表面粗糙度测量的直接能量沉积制造钢倾斜壁的实验研究

Experimental Study on the Manufacturing of Steel Inclined Walls by Directed Energy Deposition Based on Dimensional and 3D Surface Roughness Measurements.

作者信息

Pereira Alejandro, Carou Diego, Fenollera María, Prado Teresa, Gapiński Bartosz, Wieczorowski Michal

机构信息

Faculty of Industrial Engineering, Campus Lagoas Marcosende, Universidade de Vigo, 36310 Vigo, Spain.

Faculty of Aeronautical and Space Engineering, Universidade de Vigo, 32004 Ourense, Spain.

出版信息

Materials (Basel). 2022 Jul 18;15(14):4994. doi: 10.3390/ma15144994.

DOI:10.3390/ma15144994
PMID:35888461
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9317309/
Abstract

Robotic-directed energy deposition has attracted the attention of the research community and industry as a process capable of producing large metallic parts. The selection of the manufacturing conditions is a critical step in improving the process efficiency and quality of the produced parts. The present work aims at analyzing the geometry and surface topography of walls built using several conditions and inclination angles, without additional supports except for the substrate. The walls were made of AWS A5.18. ER70S-6 steel using the Wire Arc Additive Manufacturing process. The study used both dimensional and 3D topography measurements to analyze the results. As findings, the travel speed played an important role in the size of the cross-section due to the heat input to the welding zone. Heat accumulation was a critical factor in the size and accuracy of the beads. Moreover, intermediate cooling provided structures with more uniform dimensions, smaller width, and higher layer growth. The inclination of the pieces influenced the width and uniformity of the beads, generating minor imperfections on the downside of the pieces because of gravity.

摘要

机器人定向能量沉积作为一种能够制造大型金属部件的工艺，已引起了研究界和工业界的关注。制造条件的选择是提高工艺效率和所生产部件质量的关键步骤。目前的工作旨在分析在除基板外无额外支撑的情况下，使用多种条件和倾斜角度构建的壁的几何形状和表面形貌。这些壁采用电弧增材制造工艺，由AWS A5.18. ER70S-6钢制成。该研究使用尺寸测量和三维形貌测量来分析结果。研究结果表明，由于焊接区的热输入，行进速度对横截面尺寸起着重要作用。热量积累是焊道尺寸和精度的关键因素。此外，中间冷却为结构提供了更均匀的尺寸、更小的宽度和更高的层生长。部件的倾斜影响了焊道的宽度和均匀性，由于重力作用，在部件的下方产生了一些小瑕疵。

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