Yes. Titanium is classified as a combustible metal because it is easy to ignite. When metal-to-metal contact(for example, the blade tip touching the inner casing), the oxide layer on the surface of Titanium peels off, resulting in rapid oxidation of the metal surface, resulting in a catastrophe.
Most of the titanium alloys are used in the Aviation Industry. For example, in the gas turbines, titanium alloys are used in the compressor section but avoided in the turbine section where the temperatures are very high(around 1300 degrees C).
Therefore, although pure Titanium has a melting point of 1670 degrees C, its application remains below a temperature of 600 degrees C. (https://www.youtube.com/watch?v=BXmollY-cr0)
Fires may happen in Titanium machining
As with all metals, fine dust-like particles of Titanium will ignite more readily than solid blocks. And many accidents are caused by not following appropriate procedures when making CNC machining for a long time.
It always happened in lathe and CNC machining, so that requires some special drills.
Fires cannot be put out with water or carbon dioxide. We do a lot of titanium machining products and have class D fire extinguishers in every corner. But still so many people don’t want to machine titanium in plants. Too dangerous, workers must often check machines if it’s safe.
High-speed steel drills can work for titanium alloys, but carbide-tipped drills still provide the best results when drilling commercially pure Titanium and deep hole drilling.
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