Preparation method and application of heat-resistant titanium alloy bolt for aerospace

The invention provides a machining and manufacturing method and application of a heat-resistant titanium alloy Ti60 bolt for aerospace. The heat-resistant titanium alloy Ti60 bolt is prepared from Ti60 titanium alloy bars and wires. Firstly, one end of a bolt blank is made into a bolt head with the diameter being 8-16 mm through a three-time hot upsetting technology, and a first-stage semi-finished product of the Ti60 titanium alloy bolt is obtained; the Ti60 titanium alloy bolt is subjected to solution treatment at the temperature of 1000-1040 DEG C, and a second-stage semi-finished product of the Ti60 titanium alloy bolt is obtained; performing size processing on the Ti60 titanium alloy bolt secondary semi-finished product, performing warm rolling on the rod part of the Ti60 titanium alloy bolt secondary semi-finished product subjected to size processing to form a threaded section, and obtaining a Ti60 titanium alloy bolt tertiary semi-finished product; and the third-stage semi-finished product of the Ti60