本文件规定了航空航天工业中具有定向能量沉积的金属零件的增材制造要求。这些可以是添加生成的零件，也可以是对现有零件添加生成的。在本文件的应用范围内，线材被用作原料，电弧工艺（气体保护金属电弧工艺、钨惰性气体工艺、等离子弧工艺）是主要的能源。 如果工程主管部门要求，本文件将与工程文件一起使用。

This document specifies requirements for the additive manufacturing of metallic parts with directed energy deposition (DED) in the aerospace industry. Within the application scope of this document, wire is used as feedstock, and arc processes (gas-shielded metal arc processes (MIG/MAG/GMAW), tungsten inert gas processes (TIG/GTAW), plasma arc processes (PAW)) are used as the main energy source. This document is to be used in conjunction with the engineering documents, if required by the engineering authority. This document does not address health and safety issues.