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过去二十年金属加工工业所经历的生产率革命,在很大程度上应归功于镀层刀具。鉴于镀层可稳定地提高刀具寿命300～500％(或更多),同时大大提高切削速度。因此,这项技术为工业生产所利用,乃在意料之中。高速机械加工尽管镀层刀具的份格比较昂贵,但其高的机械加工速度可降低成本。图1举例说明了采用各种镀层刀具和无镀层刀具所可能达到的金属切削速率(MRRS)。由图可见, 用硬质合金镀层刀具取代无镀层的硬质合金刀具,可使机加工时间缩短4/5,相当于加工速度由350ft/min提高到1200ft/min。高速钢(HSS)镀层刀具通常不能如此惊人地提高切削速度。充其量只能提高10～20％,因为HSS基体没有足以承受由更高的切削速度所导致之应力的刚性。
The productivity revolution that the metalworking industry has experienced over the past two decades owes much to the coated tools. In view of the coating can be a steady increase in tool life 300 ~ 500% (or more), while greatly increasing the cutting speed. Therefore, it is not surprising that this technology is used for industrial production. High-Speed Machining Although coated tools are more expensive, their high machining speeds reduce costs. Figure 1 illustrates the metal cutting rate (MRRS) possible with a variety of coated and uncoated tools. It can be seen from the figure that replacing the uncoated cemented carbide tool with a carbide coated tool can shorten the machining time by 4/5, which is equivalent to increasing the processing speed from 350 to 1200 ft / min. High Speed Steel (HSS) coated tools typically do not increase the cutting speed so dramatically. At best it can only be increased by 10 to 20% because the HSS substrate does not have enough rigidity to withstand the stresses caused by higher cutting speeds.