CNC-bearbejdning af titanlegeringer bør starte fra to aspekter: reducere skæretemperaturen og reducere vedhæftningen. Vælg værktøjsmaterialer med høj termisk hårdhed, høj bøjningsstyrke, god varmeledningsevne, og dårlig affinitet med titanlegeringer. YG hårdmetal er mere egnet. På grund af højhastighedsståls dårlige varmebestandighed, værktøj lavet af hårdmetal bør anvendes så meget som muligt. Almindeligt anvendte hårdmetalværktøjsmaterialer omfatter YG8, YG3, YG6X, YG6A, 813, 643, YS2T og YD15.
Coated blades and YT-type cemented carbide will have a violent affinity with titanium alloys, aggravating the bonding wear of the tool, and are not suitable for cutting titanium alloys; For complex and multi-edged tools, you can choose high-vanadium high-speed steel (such as W12Cr4V4Mo), high-cobalt high-speed steel (such as W2Mo9Cr4VCo8) or aluminum high-speed steel (such as W6Mo5Cr4V2Al, M10Mo4Cr4V3Al) and other tool materials. It is suitable for making drills, reamers, end mills, broaches, taps and other tools for cutting titanium alloys.
Using diamond and cubic boron nitride as tools for cutting titanium alloys can achieve significant results. If natural diamond tools are used under the condition of emulsion cooling, the cutting speed can reach 200 m/min; If cutting fluid is not used, the allowable cutting speed is only 100m/min at the same amount of wear.
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CNC machining of titanium alloy cutting tools