涂层刀具高速车削损伤容限型钛合金的试验研究

The Experimental Research of Coated Cutting Tool in High Speed Turning Damage-tolerant Titanium Alloy

针对TC21这种我国自主研制的高强高韧损伤容限型钛合金,采用Ti Al N涂层刀具进行了高速车削试验研究。通过单因素法试验,分析了车削参数对切削力、切削温度和刀具耐用度的影响规律。采用扫描电镜(SEM)和能谱分析(EDS)的观察手段,研究了Ti Al N涂层刀具高速车削钛合金TC21的刀具磨损机理。研究成果为Ti Al N涂层刀具高速车削损伤容限型钛合金的推广提供了理论参考依据。

In order to achieve the goal of high speed turning for damage-tolerant titanium alloy,the Ti Al Ncoated tool w as adopted for high speed turning of TC21. TC21 is a first self-developed high strength and damage-tolerant titanium alloy in China. By means of mono-factorial experiments,the influence rules w ere analyzed that turning parameters effect on cutting force,cutting temperature,and tool life. By analyses of scanning electron microscope( SEM) and electron energy spectrum( EDS),the tool w ear mechanism w ere studied. These researches provide references for high speed turning TC21.