The life of the dth rock bit generally refers to the total footage from the start of the drill bit to when it cannot be drilled. During the drilling process, the drill bit may encounter normal working wear and abnormal wear, and abnormal wear affects the life of the drill bit. Because the design, manufacture and use of impregnated diamond drill bits is a very complex system engineering, there is a complex relationship between the life of the drill bit and the diamond parameters, matrix composition performance, drilling process and the properties of the rock to be drilled. All links cooperate with each other to fully tap the potential of the drill bit and improve the life and efficiency of the drill bit. Therefore, the use process of diamond drill bits from design, molding, material selection, and firing has a great impact on its life. These links all affect the service life of the drill bit and the efficiency of drilling construction.

According to the process of design, manufacture and use of impregnated diamond drill bits, the factors affecting the life of diamond drill bits are: the nature of the rock being drilled, the quality of the drill bit itself, drilling process parameters and construction process management.

In the process of drilling into broken rock, the diamond bit itself is also gradually blunted by the wear of the rock until it is damaged. However, the wear during drilling is not necessarily a bad thing. In the impregnated diamond drilling, the necessary abrasive wear is very important. It can help the diamond drill bit to self-sharpen in time, so that the drill bit can work normally and improve rock breaking. efficiency and increase drill life.

The ability of the drilled rock to wear the diamond bit is called abrasiveness. The factors affecting the abrasiveness of rock mainly include the hardness and abrasiveness of rock particles, particle shape, size, porosity, mineral type and type of rock, cohesive strength of rock, rock medium, etc. The abrasiveness of the rock determines the efficiency and life of the rock crushing tool, and has a significant impact on the parameter selection of the drilling process and the design and use of the drill bit.

The life of the drill bit is not only affected by the rock it acts on, but also depends on the performance parameters such as the nature and structure of the drill bit itself, because the nature and composition of the rock are uncontrollable factors, and the quality of the drill bit itself can be reasonably designed. , advanced manufacturing process has been improved. For the diamond bit itself, among the factors affecting its life, the wear resistance of the bit plays a decisive role (under certain conditions, the wear resistance of the matrix is ​​consistent with the hardness and erosion resistance of the matrix, such as In the case of the same carcass formula, the higher the hardness of the carcass, the higher the wear resistance and erosion resistance). The wear resistance of the drill bit includes the wear resistance of the lip diamond and the wear of the carcass material. aspect. In the impregnated low pressure dth hammer, these two aspects must cooperate with each other to achieve good results, that is, the wear of the diamond is slightly slower than the wear of the matrix, which can ensure the continuous emergence of the diamond during the drilling process. Maintain the efficiency of the drill bit and improve the efficiency of drilling construction. On the contrary, it will cause the drill to fail without cutting edge.