Metal micro-tube has the functions of micro-channel closure,directional guidance,steadying and guiding flow etc.,which is widely used in medicine,electrical and electronics,heat transfer,optics and other fields.The preparation of metal micro-tubes is very challenging due to the limitations of the miniaturization of tools and changes in material properties and friction be-havior due to size effect.The process principles,manufacturing characteristics,forming capabilities,advantages and disadvantages of the commonly used manufacturing technologies for metal micro-tubes are summarized,including hot extrusion forming,cold drawing forming,dieless drawing forming and electroforming forming.Finally,the future development trends and research focuses of metal micro-tube manufacturing technology are prospected.
关键词
微细金属管/制备方法/无模拉拔成形/电铸成形
Key words
metal micro-tube/manufacturing technologies/dieless drawing forming/electroforming forming