Current Status and Outlook of Wire Arc Additive Manufacturing Shape-control Technology
Metal additive manufacturing is a key direction for promoting the transformation and upgrading of China's high-end equipment manufacturing industry under the strategy of becoming a manufacturing powerhouse,and arc additive manufacturing,with its advantages of high deposition efficiency,low cost and the ability to directly form complex structures,has attracted widespread attention.The physical processes involved in additive manufacturing,however,are complex,and the forming quality and precision face geeat challenges.This paper focusing on the manufacturing characteristics of short process and long cycle in arc additive manufacturing,discusses how to reduce forming deviations from the heat source,deminish manufacturing errors from the process and improve forming precision from the results.A series of innovative methods and strategies for heat source modulation,process control and result optimization are introduced,the existing problems and challenges faced by current technologies are summerized,and some cogitations on how to further enhance the forming control effect of the arc additive process are put forward.
wire arc additive manufacturingdecoupled heat sourcepath planninghybrid additive and subtractive manufacturingforming control
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