The invention discloses a method for manufacturing a high-accuracy pure
titanium rod. The method includes the steps of blank preparation, blanking, cogging-down
forging, deformation
processing, annealing, thermal straightening, lathe
machining, piece finishing and finished product packaging inspection. During lathe
machining of a rod,
diameter of the rod can be directly machined to be in the size of a finished product rod, and waste chips generated during turning of the rod can be recycled, so that economic value is increased;
heating temperature is low during finishing, so that influence on metallographic structure of the rod is small, service life of the rod is prolonged, and
mechanical strength of the rod is improved; due to low
heating temperature, oxidation scale on the surface of the rod is extremely thin, total indentation of the rod is small during straightening,
grinding is not needed after straightening, and requirements, on coarseness of 1.6 micrometers and size tolerance, of the finished product rod can be met by directly
polishing for two times.