A Strategy For Success In Cutting Ti.docx

A strategy for success in cutting Ti

• Use positive cutting geometries to minimize cutting forces, heat generation and part deflection. • Use constant feed to prevent work hardening of the workpiece. Never stop feeding while the tool is in the cut. • Use large volumes of coolant to preserve thermal stability and to prevent temperature build-up that can lead to subsurface irregularities and possible tool failure. •Keep tools sharp. Dull tools accentuate heat build-up, and cause galling and seizing that lead to tool failure. • Machine titanium alloys in the softest state possible. Because many alloys are age hardenable – they get harder when heat is applied – they become stronger and more abrasive as second- phase particles form. • Use a large tool nose radius or round inserts whenever possible to put more of the tool into the cut. This decreases the cutting force at any one point and prevents localized damage.