切削实验表明，涂层刀具的切削寿命是未涂层刀具的2 4倍左右，在国内处于领先的水平。
The cutting test shows that the cutting life of diamond-coated tool is about 24 times than that of uncoated one.
切削性能试验表明，激光硬化的刀具寿命可以大大提高。
Test of cutting performance shows that its lifetime can be increased greatly.
由于同一时间只有部分切削刃切削工件，因此可以在对刀具寿命没有不利影响的情况下承担重型切削。
Since only a few of the cutting edges are engaged with the workpiece at a time, heavy cuts can be taken without adversely affecting the tool life.
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