In aerospace manufacturing, the aero-engine is the “heart” of the aircraft, and its hot-section components operate under extreme high-temperature, high-pressure, and high-speed rotation. Critical parts such as turbine blades must function stably in gas temperatures that exceed the alloy melting point. Their machining precision and reliability directly determine overall engine performance and service life.

Traditional machining processes face major limitations when manufacturing precision structures such as film-cooling holes and micro fuel-spray orifices. Mechanical drilling can cause tool breakage and hole-wall damage, while EDM suffers from electrode wear and low efficiency. Poor thermal-effect control can lead to micro-cracks, excessive recast layers, and other defects, significantly reducing fatigue strength and jeopardizing operational safety.

As thrust-to-weight ratio and thermal efficiency requirements continue to rise, cooling-air precision becomes increasingly critical, and traditional methods cannot ensure the quality and productivity required for dense micro-hole arrays. Therefore, the development of a high-precision, low-damage, high-efficiency micro-drilling technology has become essential to meet the demanding cooling-structure requirements of next-generation aero-engines.