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钛合金是一种比较准加工的材料,其弹性模数仅为钢的1/2。在切削加工TC_4钛合金时,刀具切削力增加将近一倍。钛合金的化学性能和耐热性能都对刀具不利。含钛的硬质合金刀头与钛合金工件材料还会起反应,只能采用不含钛的硬质合金刀具。钛合金导热系数小,传导慢,易产生粘附现象,而粘附现象随着切削温度的升高而增加。在切削TC_4钛合金时,切削热主要集中在切屑与刀具间极窄小的接触面上,其中80％传给了刀具,切削温度高达
Titanium alloy is a quasi-processing materials, the modulus of elasticity of steel is only 1/2. When cutting TC_4 titanium alloy, cutting force of cutting tool nearly doubled. Titanium alloy chemical properties and heat resistance are bad tools. Titanium carbide tip and titanium alloy workpiece material will react, only with non-titanium carbide tool. Titanium alloy thermal conductivity is small, slow conduction, easy to produce adhesion phenomenon, and the adhesion phenomenon increases with the increase of cutting temperature. In cutting TC_4 titanium alloy, the cutting heat is mainly concentrated in the very narrow contact surface between the chip and the tool, of which 80% passed to the tool, the cutting temperature up to