Laser shot peening: Commercial aero engine large composite fan blade titanium alloy leading edge strengthening
Commercial aviation engine fan blades are variable thickness thin-walled structures with continuous curvature, long blade bodies, large twist angles, and thin walls (0.1mm at the leading and trailing edges), which are prone to deformation exceeding the tolerance during the surface hardening process.
Continued cooperation with China Aviation Industrial商发 company systematically carried out research on laser peening strengthening of titanium alloy blades, and solved the problem of strengthening deformation control of thin-walled blade tips. A set of fully automatic laser peening strengthening equipment was delivered by Shanghai Jiao Tong University, and it has been successfully used in the trial production of titanium alloy edge surface strengthening process for composite fan blades of CJ* aviation engines.
The residual compressive stress can reach -300MPa, the deformation deviation meets the design requirements, and the effective improvement of the blade tip anti-FOD fatigue strength.
Laser shot peening can also be widely used to improve the surface fatigue resistance of key components such as aircraft engine blades, integral blade discs, and edge parts, effectively extending the service life of key aircraft engine components.