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采用氮化钛涂层,使高速钢麻花钻的耐用度或寿命得到显著提高。这里介绍的是物理气相沉积方法(PVD).按照这种物理气相沉积方法,麻花钻在其回火温度(约550℃以下进行涂复而与涂层材料的气化温度无关.只要涂层温度在回火温度以下,便能保持其硬度,不会产生热应力,因此涂后无需进行其它处理.在物理气相沉积方法中,离子镀复法的特点是涂层的结合强度好、涂层厚度均匀以及有纯原子的表面,这些是由于采用离子轰击方法使表面净化所致。
The use of titanium nitride coating, high-speed steel twist drill durability or life has been significantly improved. Here is the physical vapor deposition method (PVD) .According to this method of physical vapor deposition, twist drills at its tempering temperature (about 550 ℃ below the coating and the coating material has nothing to do with the gasification temperature as long as the coating temperature In the tempering temperature below, will be able to maintain its hardness, will not produce thermal stress, so after coating without the need for other treatment in the physical vapor deposition method, the ion plating method is characterized by the combination of good coating strength, coating thickness Uniform and pure atomic surface, these are due to the ion bombardment method to make the surface purification.