Tips for using rock drill threaded button bits
In order to use the button bit correctly and ensure that the button bit is worn and discarded normally, the following points must be paid attention to:
1. According to rock conditions (hardness, corrosivity), drilling methods (open air, underground, tunnel drilling, production drilling, anchor hole drilling), powder discharge media (compressed air, high pressure water), rock drills (heavy, light, pneumatic, (Hydraulic) Select drill button bit. Different ways of distributing teeth and discharging powder are suitable for different construction sites. See the attachment for typical button bit and recommended range of use. Choosing the correct drill bit is the prerequisite for obtaining the maximum drilling speed!
2. It is necessary to be stable when opening the hole, and the working parameters of the rock drill must be lowered to prevent the single tooth from being overloaded, causing broken teeth and tooth loss;
3. According to the rock drilling conditions, adjust the working parameters of the rock drill in time, and adjust the impact, propulsion, and rotation parameters based on the standards of no sticking, fast drilling speed, and no bending of the drill rod. It can also be judged by measuring the temperature of the connecting sleeve between the shank tail and the drill rod: the normal temperature in the case of water discharge and powder discharge is ≤40℃, and the normal temperature in the case of compressed air discharge and powder discharge is ≤70℃;
Note: Do not stop the water or gas during the use of the drill bit, otherwise it is very easy to cause the drill bit to heat up and cause the drill bit to break and lose teeth and cause failure.
4. After a certain period of operation of the button bit, the alloy teeth and shell wear of the drill bit should be checked regularly. When the alloy teeth or the shell are found to be worn, the relevant tools should be used for grinding in time to avoid affecting the drilling speed and preventing the inverted cone of the drill bit from causing the sticking. If the alloy teeth and the shell are severely worn, in order to avoid waste holes caused by tooth loss and breakage of the bit body, a new drill bit should be replaced in time.
5. Please notify our company in time for the button bit that has been abnormally scrapped in the early stage. The main contents of the notice include:
1) The model and actual working parameters of the rock drill used (impact pressure, impact power, impact frequency, propulsion force, rotation speed);
2) The model of the trolley used;
3) The manufacturer, specifications and usage conditions of the supporting shank adapter, drill rod and connecting sleeve;
4) Rock type and hardness, construction location (open air, underground, tunneling, production, anchor hole, other), drilling construction method (downward, horizontal, fan, other), drilling depth;
5) Statistics on the failure of drill bit:
A. Failure mode (broken tooth, tooth loss, wear), life, quantity;
B. Button wear (residual height);
C. Planned service life;
D. Normal average service life;
E. Average service life of other manufacturers.
6. When the drill bit is drilling rock, ensure that there is sufficient water pressure or wind pressure to prevent excessive wear and sticking of the drill bit due to poor powder discharge, so as to increase the drilling speed.
7. When ordering a button bit, you should specify the shape of the bit (E), the shape of the button (hemisphere, bullet), the number of teeth, the connecting thread or provide physical samples.
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