Laser rapid forming TA15 titanium alloy cutting application

Titanium alloy with low density, high specific strength, corrosion resistance and other outstanding advantages, widely used in aerospace and engine structure, titanium alloy structural parts of the level has become a measure of modern aircraft, high thrust-to-weight ratio of aircraft engine technology advanced one of the important signs.

Titanium alloy component laser rapid forming technology, titanium alloy powder as raw materials, through laser melting layer by layer deposition (" growth manufacturing "), directly from the part CAD model to complete the high-performance titanium alloy component "near net forming", is a transformational short cycle, low-cost, no mold, digital, advanced manufacturing technology. Compared with the traditional manufacturing technology of titanium alloy such as integral forging, laser rapid forming technology of titanium alloy components has the advantages of fine and uniform organization, excellent comprehensive mechanical properties, no need for forging processing and forging mold, high material utilization rate, small machining allowance, short CNC processing time, flexible and efficient. Through nearly 10 years of research, China has taken the lead in realizing the installed application of laser rapid forming large titanium alloy main bearing components.

The surface morphology, microstructure, mechanical properties and size allowance of laser rapid prototyping titanium alloy parts are obviously different from those of traditional casting and forging titanium alloys, and the machine cutting process is also different from that of traditional forging titanium alloys. At present, there is no research report on the cutting technology of laser rapid prototyping titanium alloy. In this paper, the surface morphology and hardness distribution uniformity of TA15 titanium alloy parts are analyzed, and the cutting process performance such as milling, boring and drilling, cutting tool material selection and milling process parameter optimization of TA15 titanium alloy parts are studied.