In the aerospace industry, titanium alloys are often chosen as the material for critical structures due to their excellent comprehensive properties.3D printing (additive manufacturing) technology is bringing revolutionary improvements to the processing of aerospace titanium alloys, and is driving the innovation of aircraft component manufacturing methods.
Additive manufacturing technology achieves process innovation through the principle of discrete-accumulation forming. When using the selective laser melting (SLM) process, the equipment melts and accumulates titanium alloy powder layer by layer in a protective atmosphere, with a forming accuracy of ±0.1mm. The advantages of this technology are reflected in three aspects:
1. Achieving topology optimization structure: It can integrate the engine fuel nozzle, which requires 30+ parts to be assembled in traditional manufacturing, into a single piece, with internal diameters of 0.3mm for irregular cooling flow channels;
2. The material utilization rate is increased to over 85%, significantly reducing the processing loss of high-priced alloys such as TC4;
3. The rapid prototyping cycle is shortened by 70%, supporting a 3-4 times increase in design iteration speed.
Currently, the Airbus A350XWB model has adopted 3D-printed titanium alloy brackets, achieving a weight reduction of 30% per unit; the fuel nozzle of the GE Aviation LEAP engine integrates 20 components into 1, with durability increased by 5 times. These engineering practices demonstrate that the combination of additive manufacturing and traditional processing technologies is building a new technical system in the aerospace manufacturing field.