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在转数额定不变的情况下，若达到较高的钻速，必须增大钻压。但是钻压过大，金刚石和胎体磨耗及损坏均较快。表1是武山矿区使用的17个钻头，其中时效0.5—2米/时的，平均回次磨耗量都比较小，时效为2—4米/时的，平均回次磨耗量都比较大（个别是记录错误，也有的是岩心堵塞后硬磨所致）。一般地说，在一定的范围内，钻头的磨耗与钻庄、磨耗与时效均为函数关系，图1、2是两个钻头实际的磨耗与时效的对应关系图。
In the case of constant speed rating, if you reach a higher penetration rate, you must increase the weight on bit. However, excessive weight-on-bit, diamond and carcass wear and damage are faster. Table 1 shows the 17 drill bits used in the Wushan mining area. The aging time is 0.5-2 m / h, the average back-wear amount is relatively small, the aging time is 2-4 m / h, and the average back-wear amount is relatively large Is the wrong record, but also due to the hard core after the blockage due to blockage). In general, within a certain range, the drill wear and drill Zhuang, wear and aging are functions, Figure 1, 2 is the actual two drill bit wear and aging of the corresponding relationship.