As in one end of 1st process and the aforementioned cylindrical metal element tube where the metal whose production manner of the ultrathin long shaku metal cylindrical body and this ultrathin long shaku metal cylindrical body

摘要

A step of a metal cylinder long is formed by welded rectangular metal plate which can be plastic working is formed into a cylindrical shape and protruding from the inner and outer flanges are projected to the outside ends of the metal cylinder a step of the flanged cylindrical metal tube having an inner flange being is formed, a process which is mounted with the cylindrical metal tube is in close contact with the mandrel, the tension with a cylindrical metal tube a step of the spinning process for rolling and by plastically deforming the wall by spinning the mandrel is rotated in the axial direction is given, both ends of with cylindrical metal tube after the plastic deformation is cut, Residual stress adjustment step, consists, it is configured that an intervening heat treatment step spinning process step. With this configuration, very thin long metal cylinder of high functions required for rolls used in the field of flat panel displays optical film forming roll or the like is provided.