Mechanical property and microstructure of T91 steel pipe joint with TIG welding on different high-temperature test process was researched.

Aerogine has the features of high rev, heavy air flux and high exhaust temperature, fierceness of noise engenders environment pollution largely during aeroengine test.

This system can complete the engine rotational speed and torque high accuracy control and the test, also engine temperature, pressure, oil consumption parameters survey.