Research Progress and Application of Cold Spray Additive Manufacturing Technology
Cold spray additive manufacturing,as an emerging solid-state additive manufacturing technology with great potential,has attracted much attention in recent years.The process principle of cold spray additive manufacturing is based on aerodynamics.The raw material powder is subjected to high-speed collisions to achieve mechanical or metallurgical bonding for structural formation,which belongs to"solid-state additive"and can avoid the problems of oxidation,phase transformation,grain growth and residual thermal stress caused by the heat input in traditional additive manufacturing.International research in this field is actively progressing.At present,this technology has found widespread application in fields such as aerospace,weapons,energy and power,encompassing areas like surface repair,strengthening and functional coatings of equipment components.This paper reviewed the process principle,equipment status,and research progress of the cold spray additive properties of typical metal materials in cold spray additive manufacturing technology.Through typical application cases of cold spray in the repair and manufacturing of equipment components,the application of cold spray additive manufacturing technology was introduced.
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