2012 Volume 53 Issue 5 Pages 853-861
Manufacturing of thin tube with a large diameter could be a target of tube spinning. This kind of tube could be used as a casting mould for optical films and laminate films which protect IC cards. In the present research, a new machine has been developed in order to manufacture stainless steel tubes with a thin thickness of 0.2 mm and a very large diameter of 500 mm. Deformation in tube spinning for a small diameter of 30 mm was examined using a conventional spinning machine for thin tubes with small diameters. The examined characteristics of deformation include effect of initial thickness deviation and indentation on dimensional precision of formed tubes. Based on the examination in the conventional machine, a new tube-spinning machine was designed and the spinning conditions were determined, and the machine has successfully deformed parent tubes into thin tubes with a large diameter.