A kind of third-generation enhanced heat-transfer component,namely 3D integral fin,was machined by the rolling-ploughing-extrusion composite machining,and the corresponding formation characteristics,machining conditions and formation mechanism were analyzed.

To fabricate high-performance stainless steel packings,a new fin-forming technology named plowing/extruding is proposed to machine three-dimension downy fins on the surfaces of stainless steel laminas that are used as packings.

Rolling and plowing/extruding method was used to machin integral serrated outside finned tube.

In this paper, the model for the formation of overlap in extrusion_ploughing for outside fin tube is developed.

Rolling-ploughing a King of 3D Outside A-finned Tube;