(1)Welding time is shorter, about 1/2 of the ordinary friction welding, such as single-head drill Dagang Oilfield 127mmIEU pure welding time of about 30-50s, while inertia friction welding only 18-20s.
(2)Friction welding in general would lose braking function, inertial brake friction welding no loss of kinetic energy, and short welding time, total energy consumption is smaller.
(3)Since the counterweight on the spindle from the inertial mass storage effect, the power transmission device can be slightly less, while omitting a braking device, the equipment and its control system more streamlined.
(4)Only three main process parameters, namely the spindle speed n, flywheel moment of inertia J and the top forging force f, when the above three parameters selected, the entire welding process can be automated, the welding process, the welding section temperature, friction torque, friction welding and shorten the amount of time varies with the three main parameters, the welding process easy to control.
(5)Since the welding time, welding heat affected zone temperature gradient is steep, welding center section and solid body hardening risk of danger due to welding friction welding to be larger than normal. However, the drill pipe welding section is an annular cross-section, the center does not exist due to the danger of welding.
