Rock Drilling Tools Chisel Drilling Bits

The chisel drill bits is a widely used rock drill bit in China. Its connection form is mainly conical connection. It is used in conjunction with a tapered drill rod (commonly known as a finished drill).

In order to correctly use the chisel drill bits and ensure normal service life, the following points must be noted:

1. Ensure good cooperation with the conical drill rod (consistent taper, the depth of the drill rod inserted into the drill bit cone hole must be greater than 25mm, and the drill rod head should not be fully covered at the bottom of the drill bit hole), otherwise the drill bit is easily lost; Note: It is best to use a drill bit product from the same manufacturer as the conical drill rod to ensure that their tapers are consistent and have a good fit.
2. When drilling holes, the rock drill should lower the air volume to reduce the damage to the drill bit caused by the high stress on the local carbide sheet. Use normal air volume after the drill bit is completely drilled into the rock;
3. When the platform width of the drill bit blade is ≥3mm, it should be replaced or sharpened in time to avoid reducing the rock drilling speed, causing drill bit fragments and cracks, and reducing the service life; when the drill bit has an inverted cone, the drill bit should be replaced or sharpened in time, otherwise it will seriously wear the drill bit, reduce the rock drilling speed, and even get stuck;
4. When using the drill bit, if foreign objects such as steel bars are encountered, the drilling position should be adjusted to prevent the drill bit from being damaged;
5. When drilling is prone to getting stuck, the chisel drill bitsshould be replaced with a cross drill bit or a ball-tooth drill bit;
6. For rocks that cause serious wear of the chisel drill bits, slow rock drilling footage, and serious fragments, consider replacing other alloy grades of drill bits or using cross drill bits and ball-tooth drill bits, and notify our company in writing in time for timely processing. The content of the notice mainly includes: 1) the model, wind pressure and air volume of the rock drill used; 2) the rock type and hardness, the construction site (open-air, underground, other), the drilling construction method (downward, horizontal, mixed, other); 3) the type, quantity, life and damage form of the damaged drill bit; 4) the average life of the normal drill bit; 5) the planned service life; 6) the average service life of other manufacturers. 7) the product model of our company.
7. When the rock is soft and easy to drill, the use of an integral drill (the drill bit is made directly on the drill rod) can greatly increase the drilling speed;
8. For vertical drilling, the use of an integral drill can avoid the loss of the drill bit, and the powder discharge must be normal, otherwise the drill bit will be severely worn;
9. The drill bit should try to ensure the water supply during the drilling process to prevent the drill from getting stuck and improve the service life and drilling efficiency of the drill bit;
10. Yantai Gaea can provide a one-shaped drill bit with various specifications and models of alloy sheets.