金属3D打印综述文章

snow838

澳大利亚卧龙岗大学科研人员写的 金属增材制造综述文章
Wire-feed additive manufacturing of metal components:technologies, developments and future interests
       Wire-feed additive manufacturing (AM) is a promising alternative to traditional subtractive manufacturing for fabricating large expensive metal components with complex geometry. The current research focus on wire-feedAMis trying to produce complex-shaped functional metal components with
good geometry accuracy, surface finish andmaterial property to meet the demanding requirements from aerospace, automotive and rapid tooling  industry. Wire-feed AM processes generally involve high residual stresses and distortions due to the excessive heat input and high deposition rate. The influences of  process conditions, such as energy input, wire-feed rate, welding speed, deposition pattern and deposition sequences, etc., on thermal  history and resultant residual stresses of AMprocessed components needs to be further understood. In addition, poor accuracy and surface finish of the process limit the applications of wire-feed AMtechnology. In this paper, after an introduction of variouswire-feedAMtechnologies and its characteristics,
an in depth review of various process aspects of wire-feed AM, including quality and accuracy of wire-feed AM processed components, will be presented. The overall objective is to identify the current challenges for wire-feed AMas well as point out the future research direction.