As important geological drilling equipment, DTH drill bits are widely used in mining, geological exploration, road construction, groundwater extraction, and other fields. However, because of wear and damage during drilling, the service life of DTH drill bits will be affected to a certain extent. Therefore, it is significant to study ways to improve the service life of DTH drill bits.
Factors affecting the service life of DTH drill bit
To improve the service life of DTH drill bits, we need to understand the main factors that affect its service life. These factors include:
Rock properties
Parameters such as rock hardness, compressive strength, and tensile strength directly affect the wear degree of the drill bit. Hard rocks require higher hardness drill bit materials, while soft rocks require more wear-resistant bits.
Drill bit design
The geometry, material, and teeth arrangement of rock drill bits all affect their lifespan. Good design should minimize carbide button wear while increasing drilling speed.
Operating factors
Impact, twisting, and pressure during operation will accelerate the wear of rock drill bit. Correct operating methods and maintenance measures can extend the service life of the drill bit.
Cooling and lubrication
A good cooling and lubrication system can lower the temperature of the drill bit and reduce wear.
Methods to improve the service life of DTH drill bit
In response to the above-influencing factors, the following methods can help improve the service life of DTH drill bits:
Choose the right drill bit
Choose appropriate DTH drill bits for different rock properties and hole diameters. When selecting, we should pay attention to the material, geometry, and size of the drill bit to ensure that it matches the nature of the rock.
Optimizing the design of drill bits
The design of a DTH drill bit is a critical factor affecting its service life. Optimizing the drill bit design can increase the drill bit’s strength, wear resistance, and impact resistance. Specifically, improve the service life of the drill bit by changing the drill bit geometry, optimizing the arrangement of the carbide button, and choosing the appropriate materials.
Use high-strength materials
The material used to manufacture the drill bit also influences its service life. Using materials with high strength, wear resistance, and impact resistance can effectively improve the durability of the drill bit. For example, using materials such as carbide to make drill bits can enhance the wear resistance of the drill bit and reduce the number of replacements.
Correct operation method
The correct operation method is the key to ensuring the service life of DTH drill bits. In the process of using, we should choose the appropriate drill bit and operation method according to factors such as rock type, hole diameter, and geological conditions. At the same time, we should follow the operating procedures to avoid excessive impact and loading, which may cause damage to the drill bit.
Regular maintenance
Regularly check the wear of drill bits and replace worn drill bits in time. Extend the service life of drill bits by resharing the carbide button.
Use of cooling and lubricants
The use of cooling and lubricants during the drilling process helps reduce the temperature of the drill bit and reduce wear. Choosing the suitable lubricants can lubricate the contact surface between the drill bit and the rock and reduce friction and wear.
Keep equipment in good condition
Ensure that the equipment is in good working order to avoid mechanical failures that can affect the service life of the drill bit. Carry out regular maintenance and upkeep on the equipment to ensure it is in good working condition.
Optimize the operating environment of the drilling rig
Create a good working environment, ensure the storage and use of equipment in a dry and ventilated environment, and avoid the effects of moisture and corrosion on the drill bit.
Improving the service life of DTH drill bits is of great significance to fields such as mining, geological exploration, road construction, and groundwater extraction. Adopting the above methods, we can effectively improve the service life of DTH drill bits. In practical applications, we should flexibly utilize these methods according to the specific situation, combine them with the actual engineering needs and conditions, and formulate corresponding measures to meet different drilling needs. At the same time, we continue to explore and research new technical means and innovative solutions to lay the foundation for further improving the service life of DTH drill bits.
