Aiming at the problems existing in hot riveting of titanium alloy rivets

such as insufficient forming of rivet upsetting head

surface burns of rivet upsetting head and rivet head oxidation

the main reason was found to be inaccurate control of riveting heating time and electriferous riveting process. An optimization method of hot riveting system for titanium alloy rivets was proposed. The function of heating time parametric control and automatic power cut-off before riveting was realized based on PLC. Data of rivet temperature and corresponding heating time were obtained by rivet heating test. Heating time required for rivet to reach target temperature was obtained through Newton interpolation method. A set of hot riveting process parameters for rivets of different lengths and diameters was formed. Finally

the qualified rate of hot riveting of titanium alloy rivets was greatly improved through the hot riveting test.