What are the common problems in the processing of titanium alloys?
Titanium alloy has the characteristics of high strength, small specific gravity, corrosion resistance, low-temperature resistance, and high-temperature resistance. According to its annealed structure, it can be divided into α-phase titanium alloy, β-phase titanium alloy, and α-β-phase titanium alloy. α-phase titanium alloy (TA type) cannot be strengthened by heat treatment, so the room temperature performance is not high, it has moderate plasticity, and its machinability is acceptable. β-phase titanium alloy can obtain higher room temperature performance through quenching and aging treatment. When the αβ phase titanium alloy (TC type) is processed, the contact length between the chip and the front is short, and the cutting force acts near the cutting edge. Due to the small thermal conductivity, the temperature of the cutting edge is high, which accelerates the wear of the drill bit, and due to work hardening The phenomenon is more serious and the elastic coefficient is small, so the shrinkage of the drill hole is large, which also affects the life of the drill bit.