In general, surface of additively manufactured (AMed) metal products has large roughness due to arrangement of bead shapes, and surface irregularities such as spatter and cavity. Furthermore, surface elemental composition of AMed products may be changed from that of metal powder. In this study, efficient surface smoothing and repairing of AMed metal products by large-area electron beam irradiation were experimentally investigated. Experimental results show that spatter and cavity can be completely removed and surface roughness significantly reduces. Elemental composition of AMed surface can be also changed to that of original metal powder due to the removal of oxidized surface.

通常，增材制造 (AMed) 金属产品的表面由于焊道形状的排列而具有较大的粗糙度，以及飞溅和空腔等表面不规则性。此外，AMed 产品的表面元素组成可能与金属粉末的表面元素组成不同。在这项研究中，通过实验研究了大面积电子束照射对 AMed 金属产品的有效表面平滑和修复。实验结果表明，飞溅和空腔可以完全去除，表面粗糙度显着降低。由于氧化表面的去除，AMed表面的元素组成也可以改变为原始金属粉末的元素组成。