Diamond drill I believe that many people also know what it is used for, like this engineering equipment will generally wear more serious, then of course there are abnormal phenomena. Today, let's talk about the abnormal wear performance of diamond compound bit.
Abnormal wear of diamond bit is often manifested as:
1) Drill burning. In the process of drilling, if the weight on bit is too high and the speed is too fast, the strong friction between the bit face and the rock will generate a lot of heat. Water break, dry drilling or formation leakage and false circulation of washing fluid will bring insufficient washing fluid, or water hole plugging, which can not take away the cuttings and heat in time. These are often easy to cause drilling burning accidents. Because the connection between the composite cutter and the bit body is welded at low temperature, the high temperature leads to the failure of the bit due to the drop of the bit, the bit body turns blue or brown, or even sintered together with the rock, which often causes serious accidents. In order to prevent the burning accident, the reasonable drilling speed should be controlled to ensure the smooth circulation of washing fluid.
2) Pull groove. When the weight on bit is too large, poor cooling results in micro-drilling, foreign matter at the bottom of the hole, reaming drilling or cleaning, and the outer edge falls off or breaks, these will cause the bit crown pulling slot. The loss of composite diamond layer or incomplete cover of composite piece can also easily cause the bit crown pulling groove.
3) Drill body damage. If there are steps, probe stones or collapse blocks, reduced diameter holes, the drill is strongly squeezed, will cause damage to the drill head body, hole bottom rock powder too much will seriously wear the drill body.
4) The cutting gear is damaged. The main manifestations are serious wear, broken tooth, tooth loss, welding failure and thermal crack.
5) Serious erosion of water mouth tank. The drilling rock is highly abrasive, or the washing fluid has high sand content and high velocity, which will cause serious erosion of the bit water trough and affect the strength of the bit.
6) Premature wear of outer diameter of diamond bit. If the bit diameter is too weak or the rock hardness is too high, the outer diameter will wear prematurely.
