Changing of Dimension and Microstructure of Flow Forming Cylinder Tube after Compress by Swaging Machine

Abstract

Cylinder tube is an important part of rocket motor. At the end of the cylinder tube we made surface thickness more than front and center of tube, because at the end of tube is an assembly area and need to machine later. Flow forming process is the cold forming process that fix inside diameter of cylinder tube. It’s mean outside diameter at end of tube was bigger than other area. Swaging Machine was required to reduce outside and inside diameter to follow the tube designed. We found direction of compress is effect to size obtained, compress inside to outside longitudinal direction result was different with compress outside to inside longitudinal direction.