Abstract
Titanium alloy impeller is hard in material, with large curvature and complex shape, all these factors increase its manufacturing difficulty and machining cost. By formulating the corresponding process plan, the three-axis and five-axis NC machining are combined, and the phased processing mode is implemented. The cutting tools of different lengths are selected according to the needs, and the reasonable processing strategy and cutting parameters are selected. The experimental results show that the processing time of the titanium alloy impeller is reduced effectively, the cost of manufacturing is reduced, and the processing quality is improved.
Highlights
Aeroengine is the heart of aircraft, the main material used for integral impeller is usually titanium alloy with high hardness and strength
Because the thermal conductivity of titanium alloy is very small, the cutting heat generated during cutting is not easy to dissipate, and it is concentrated in a small range near the cutting area and cutting edge, so the cutting temperature is very high, which will cause burning of the workpiece, softening of the tool material and accelerating tool wear
Titanium alloys are difficult to be machined in mechanical processing[1]
Summary
Aeroengine is the heart of aircraft, the main material used for integral impeller is usually titanium alloy with high hardness and strength. Because the thermal conductivity of titanium alloy is very small (only 1/5 of iron and 1/14 of aluminium), the cutting heat generated during cutting is not easy to dissipate, and it is concentrated in a small range near the cutting area and cutting edge, so the cutting temperature is very high, which will cause burning of the workpiece, softening of the tool material and accelerating tool wear. Titanium alloys are difficult to be machined in mechanical processing[1]. Vibration and deformation are easy to occur in the process of machining, which makes the overall processing more difficult [3]. It is prone to bending deformation, causing vibration, increasing tool wear and affecting machining accuracy
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
