Method for connecting Ti-Al alloy turbine rotor with structure steel shaft

A method of connecting a titanium alloy turbine rotor shaft with the structure of a metal belonging to the field of welding. It is characterized by the titanium alloy is achieved between the rotor and the turbine shaft via steel nickel-based superalloy combined organic intermediate transition, firstly with the nickel-based superalloy hot forged titanium alloy interference fit assembly, and then a nickel-based assembly superalloys titanium alloy and steel shaft of a conventional friction welding process by welding nickel-base superalloy, the method is simple, practical, can be large differences in the properties of titanium alloy and the steel rotor shaft firmly connected.