Rock drilling and blasting is a key process in mining and other mining basic industries, and its efficiency and cost play a vital role in the progress and benefits of the entire mine production and engineering construction. The level of rock drilling efficiency is not only directly related to the selection of rock drilling equipment, rock drill bit manufacturing quality, and structural form but also inseparable from rock properties. Especially the service life of a rock drill bit is generally low in hard and abrasive rock drilling, and how to improve its service life in the difficult geological conditions of rock drilling has always been an important issue in mining.

Improve the shape design of rock drill bit, optimize the structural parameters, and improve the effective utilization rate of carbide

Rock drill bit is in direct contact with the ore rock, the structure is complex and sensitive, and the carbide used is very different. The internal quality of carbide and the shape of button directly determine the service life of rock drill bit. At the same time, the shape of rock drill bit body is also an important factor in determining the service life of rock drill bit.

Optimization of the rock drill bit body by using a series of parameters has a significant effect on improving the service life of rock drill bit, such as convex surface structure, conical button, increasing the clearance angle, and increasing the powder discharge groove. To improve the shape design of rock drill bit and the optimization of structural parameters, it is necessary to consider that rock drill bit is beneficial to the improvement of the rock breaking efficiency and the effective utilization of carbide during the rock drilling, as well as the stability of rock drill bit body and the carbide column under complex stress conditions.

Promote the scientific and correct method of using to improve the service life of rock drill bits

During rock drilling, there are two methods to use the cemented carbide button bit: one is for one-time use, and the other is for timely grinding. The latter is a more scientific use method, which can be promoted through the following three points.

① Formulate the use standard for button bit grinding.

② Correctly select grinding equipment and grinding tools.

③ Strengthen management and carry out the grinding work of the button bit.

Implementing the scientific and correct methods of rock drill bit use is also to substantially increase the effective utilization rate of carbide and improve the service life of rock drill bit. Grinding can substantially improve the efficiency of rock drilling, reduce the cost of rock drilling tools consumption, and effectively solve the effective method in the difficult geological conditions of rock drilling.