Wire arc additive manufacturing (WAAM) is a manufacturing technology that uses an arc welding process to produce metal parts additively. The key attraction of WAAM for industries is the low cost per component and short production lead time, when components are required in small quantity for applications such as complex components of prototypes and parts for repairs/breakdown replacement. This paper presents the experience in the development of a cost-effective WAAM system on the basis of pulse spray gas metal arc welding; method of feasibility assessment for selection of applications; selection of welding variables; effect of different heat treatments on mechanical properties in the three spatial directions of test builds made additively; and manufacturing of near shape components by WAAM. Mechanical properties of test builds made by WAAM followed by heat treatment meet the requirements specified for the parts. This is an energy efficient way of making parts which are traditionally made through forging/casting route that can take months to manufacture.

电弧增材制造（WAAM）是一种使用电弧焊接工艺来增材制造金属零件的制造技术。WAAM在工业上的主要吸引力在于，当应用中需要少量组件时，例如原型的复杂组件和用于维修/故障更换的零件，则组件成本低且生产周期短。本文介绍了基于脉冲喷涂气体金属电弧焊开发具有成本效益的WAAM系统的经验。选择应用程序的可行性评估方法；选择焊接变量；不同热处理对三个相加结构的力学性能的影响；并通过WAAM制造近似形状的零件。WAAM制造并经过热处理的测试构件的机械性能符合零件规定的要求。这是一种传统上通过锻造/铸造路线制造零件的节能方式，该过程可能需要数月的制造时间。