Why is it necessary to slow down the drill speed when working with titanium?

Slowing down the drill speed when working with titanium is essential primarily to avoid galling. Galling is a form of wear caused by adhesive friction between the tool and the material being machined. Titanium has a tendency to deform easily under high temperatures and pressures, which can occur during fast machining processes. When the drill speed is too high, the heat generated can lead to the titanium sticking to the drill bit, resulting in galling.

By reducing the drill speed, operators can minimize heat generation, which in turn reduces the likelihood of galling. This approach enhances the overall machining operation by ensuring a smoother cut and prolonging the life of both the drill bit and the material being processed. Additionally, managing temperature and friction helps maintain the integrity of the titanium part, which is crucial in aerospace applications where material performance is critical.