一种刀具之是否能作为高速切削之用,首先要看制成这种刀具所用的原料,在红热的情况下是否仍能保持其原有的机械性质,而不失去其抗磨性。如果从这样一个角度来看的话,那么某些矿物制的刀具,特别是陶瓷类矿物制的,便具有优异的红热性质,即使在高温下仍能保持忧良的切削作用。其中有些甚至能在钢的熔点时保持原有的切削性能。此外陶瓷矿料所制刀具尚有其他优点;例如,陶瓷刀具具有比一般金属对于钢的较小的黏附力,因此在同样情况下。陶瓷刀具在切削时就不致像其 Whether a tool can be used as a high-speed cutting, we must first look at the material used to make such a tool, in the case of red hot still can maintain its original mechanical properties, without losing its abrasion resistance. If viewed from this perspective, then some of the mineral-based knives, especially those made of ceramic minerals, have excellent red-hot properties and maintain a good cutting action even at high temperatures. Some of them even maintain the original cutting performance at the melting point of the steel. In addition, the tool made of ceramic ore has other advantages; for example, ceramic tools have less adhesion to steel than the average metal, so under the same circumstances. Ceramic cutting tools do not look like it